Positioning welding device and welding process for large stainless steel lithium salt storage barrels

Abstract

The present invention discloses a large-scale stainless steel lithium salt storage barrel positioning welding device and process, the welding device comprises a base frame, a rotatable first clamp is fixed on the left side of the base frame, a rotatable second clamp is slidably provided on the right side of the base frame, a vertical frame is provided on the rear side of the base frame, a welding device is provided on the vertical frame, the welding device has a swingable swing frame, a lifting screw and a translation screw are provided on the swing frame, a connecting rod mechanism for rotation is provided at the output end of the screw, and a welding head is located at the output end of the connecting mechanism. In the present application, the first clamp and the second clamp are used to clamp the barrel body unit, the barrel body is rotated by the first clamp and the second clamp during welding, and then welding is achieved by the swing of the swing frame. During the welding process, the radial height, axial position and inclination angle of the welding head are adjusted by the first screw mechanism, the second screw mechanism and the connecting rod mechanism to achieve the first welding from the root of the spot welding point, and the angle is gradually adjusted until the root of the next spot welding point. After the welding is completed, the welding head is adjusted to radially perform a repair welding, which maximizes the welding quality, especially the welding quality at the roots on both sides of the spot welding point.

Description

Technical Field

[0001] The invention relates to the field of barrel welding, and in particular to a positioning welding device and a welding process for a large stainless steel lithium salt storage barrel. Background Art

[0002] Stainless steel lithium salt storage barrels are used to store lithium salts. The barrel body is a stainless steel barrel body. During the manufacturing process, each section of the hollow barrel body unit needs to be welded.

[0003] The patent with application number CN202010707431.7 discloses a cylinder outer ring seam welding production line, which belongs to the technical field of cylinder outer ring seam welding. It includes a trolley with lifting rails, a manual adjustment positioner, a welding positioner, a manual positioner sub-control cabinet, a wire barrel maintenance platform, a robot control cabinet, a main control cabinet, a water tank, a welding power supply, a dual-axis cantilever gantry, a wire barrel, a dust collector, a wire feeder, a welding robot and a dual-wire laser tracking component. The manual adjustment positioner or welding positioner supports the workpiece; the beneficial effects of the present invention are: dual robot welding is adopted to reasonably divide the welds on the cylinder, which is completed by the dual robots in collaboration to improve production efficiency; the outer ring seam position can be tracked in real time without manual correction; the welding positioner adopts five-axis full position adjustment, which can automatically adjust to the position required by the current workpiece, and has high repeat positioning accuracy.

[0004] The above patent uses dual robot welding, and can only identify the lateral position of the weld and adjust the position of the welder during welding. However, in the actual welding process, the barrel unit is generally fixed by spot welding first, and then the circumferential seam is welded. During the welding process, the width of the weld and the raised structure of the spot welding will have a certain impact on the welding. The above patent performs circumferential seam welding by rotating the fixture. During the welding process, the position and angle of the welding head cannot be adjusted according to the width of the weld and the raised structure of the welding point, which will seriously affect the welding quality at the local position. Summary of the invention

[0005] Based on the deficiency in the prior art that the position and angle of the welding head cannot be adjusted according to the width of the weld and the raised structure of the welding point, which will seriously affect the welding quality at a local position, the present invention provides a positioning welding device and a welding process for a large stainless steel lithium salt storage barrel.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a large stainless steel lithium salt storage barrel positioning welding device, which can be used for spot welding and ring welding, and includes a base frame, a rotatable first clamp is fixed on the left side of the base frame, a rotatable second clamp is slidably provided on the right side of the base frame, a stand is provided on the rear side of the base frame, and a welding device is provided on the stand, and the center line of the lithium salt storage barrel to be welded is defined as the rotation center line, and the welding device includes:

[0007] A mounting frame, which is arranged on the vertical frame, and a first driving motor is arranged on the mounting frame, and a driving gear is arranged at an output end of the first driving motor;

[0008] A first fixed seat, on which a first arc-shaped slide rail is provided;

[0009] A swing frame, with a first arc-shaped slider and a second arc-shaped slider respectively disposed on both sides thereof, the first arc-shaped slider extends into the first slide rail and slides with the first slide rail, and the swing frame is provided with an arc-shaped rack meshing with the driving gear;

[0010] A first fixed frame, on which a circular arc-shaped second slide rail is provided, the second slider extends into the second slide rail and slides with the second slide rail, and a locking member is provided on the first fixed frame to be locked with the swing frame, the locking member is a locking bolt and a nut, and a circular arc-shaped locking hole is provided on the swing frame, the locking bolt extends into the adjustment hole and is locked by the locking bolt and the nut;

[0011] A first screw mechanism, which is arranged on the first fixed frame and has a lifting slider for achieving lifting;

[0012] A second screw mechanism is arranged on the lifting slider of the first screw mechanism for horizontal sliding, and has a translation slider for horizontal sliding;

[0013] A connecting rod mechanism, which is arranged on the translation slider and can slide along with the translation slider, and comprises a first connecting rod fixed on the translation slider, two parallel second connecting rods hinged on the first connecting rod, and a third connecting rod hinged at two places with the second connecting rods, the third connecting rod is parallel to the first connecting rod and the first connecting rod is provided with a connecting rod driving motor for driving one of the second connecting rods to rotate, a linkage structure connected to one of the second connecting rods in a transmission manner is provided in the third connecting rod, the linkage structure in the third connecting rod extends out of the third connecting rod and is connected to a welding seat, and an infrared sensor and a welding head are provided on the welding seat;

[0014] A controller is disposed on the stand and is electrically connected to the first drive motor, the first screw mechanism, the second screw mechanism, the connecting rod drive motor, the infrared sensor and the welding head;

[0015] Among them, the first arc-shaped slider, the second arc-shaped slider and the rack share a common center and the center is located on the rotation center line. In this solution, the first clamp and the second clamp are used to clamp the barrel unit. During welding, the barrel body is rotated by the first clamp and the second clamp, and then welding is achieved by swinging the swing frame. During the welding process, the radial height, axial position and tilt angle of the welding head are adjusted by the first screw mechanism, the second screw mechanism and the connecting rod mechanism to achieve the first welding from the root of the spot welding point, and gradually adjust the angle until the root of the next spot welding point. After the welding is completed, the welding head is adjusted to the radial direction for a repair welding, which maximizes the welding quality, especially the welding quality at the roots on both sides of the spot welding point.

[0016] Preferably, the third connecting rod is a hollow box-shaped structure, and the linkage structure includes a first rotating seat and a second rotating seat rotatably arranged at the top and bottom of the third connecting rod, the first rotating seat extends out of the third connecting rod and is connected to the end of one of the second connecting rods, the second rotating seat extends out of the third connecting rod and is connected to the welding seat, the first rotating seat has two hinge points symmetrical about its rotation center point and a linkage rod is respectively connected to the two hinge points, and the second rotating seat has two hinge points symmetrical about its rotation center point and the two hinge points are respectively used to hinge the bottoms of the two linkage rods. This solution provides that the angle of the welding seat is adjusted by the linkage rod.

[0017] Preferably, the front and back sides of the swing frame are provided with arc-shaped bosses for limiting, the arc-shaped bosses are provided with arc-shaped wheel grooves, the first fixed seat and the first fixed frame are provided with limiting wheels extending into the wheel grooves, and the limiting wheels abut against the bottom of the wheel grooves to form limiting supports. The limiting wheels support the swing frame and the first fixed frame, ensure the stability and position of the swing frame and the first fixed frame, and ensure that the center of the circle remains unchanged during the rotation process.

[0018] Preferably, the first slide rail and one of the arc-shaped bosses are arranged at the relative positions of the front and back of the swing frame and are located at the inner circumference of the swing frame, the second slide rail and the other arc-shaped boss are arranged at the back and front of the swing frame and are located between the inner circumference and the outer circumference of the swing frame, and the rack is located at the outer circumference of the front of the swing frame. This solution reduces the radial space of the swing frame and ensures the strength of the structure.

[0019] Preferably, the first screw mechanism includes a first slide seat slidably arranged on the first fixed frame, a lifting slider slidably connected to the first slide seat, and a first motor screw arranged on the first slide seat, and the screw of the first motor screw passes through the lifting slider and cooperates with the lifting slider thread.

[0020] Preferably, the second screw mechanism includes a second slide slidably set on the lifting slider, a translation slider slidably connected to the second slide, and a second motor screw set on the second slide, the screw of the second motor screw passes through the translation slider and is threadedly engaged with the translation slider, and the connecting rod mechanism is set on the translation slider.

[0021] Preferably, the base frame is a rectangular structure, with an extension hole in the middle, a rotating motor connected to the controller is provided on the left side of the base frame, a rotating shaft is connected to the output end of the rotating motor, a first gear for driving the first fixture to rotate is provided on the left side of the rotating shaft, the rotating shaft extends along the extension hole and an axial spur tooth is provided on the right side of the rotating shaft, a sleeve with tooth grooves is provided on the right side sliding sleeve of the rotating shaft, a second gear for driving the second fixture to rotate is provided on the sleeve, a driving cylinder connected to the controller is provided on the right side of the base frame, and the output end of the driving cylinder is connected to the second fixture to drive the second fixture to slide along the base frame. There are several groups of spur teeth and tooth grooves, and they are all distributed in a circular array. This solution realizes that the rotating motor uniformly drives the rotation of the fixtures on both sides, ensures that the fixtures on both sides can rotate synchronously, reduces the difficulty of control, and ensures the uniformity of rotation.

[0022] Preferably, the first clamp includes a first transmission box fixed to the left side of the base frame, and the second clamp includes a second transmission box slidably arranged on the right side of the base frame, a group of transmission gear groups are provided in the first transmission box and the second transmission box, and each of the two transmission gear groups has a transmission gear provided with a rotating shaft, and the outer ends of the two rotating shafts are respectively provided with a first turntable and a second turntable, and the first turntable and the second turntable are both provided with sliding grooves distributed in a circular array, and the sliding grooves are respectively provided with a first sliding clamping platform and a second sliding clamping platform, wherein the bushing is located in the second transmission box, and the two groups of transmission gear groups are respectively meshed with the first gear and the second gear.

[0023] Preferably, two sets of supporting mechanisms are provided on the base frame, the supporting mechanisms include a base plate provided on the base frame, a third motor screw provided on the base plate, a guide column provided on the base plate, and a lifting seat slidably sleeved on the guide column, the third motor screw penetrates the lifting seat and cooperates with the lifting seat thread to drive the lifting seat to rise and fall, the lifting seat is provided with two supporting rollers, a distance meter is also provided in the middle of the base plate, and the distance meter and the third motor screw are both connected to the controller. The supporting mechanism is used to support the barrel body and measure the distance between the barrel body and the base plate to avoid the barrel body from tilting at the docking section, and in addition, when tilting occurs, the lifting seat is driven to rise by the third motor screw to support the barrel body to a horizontal posture.

[0024] The large stainless steel lithium salt storage barrel positioning welding process uses the above-mentioned large stainless steel lithium salt storage barrel positioning welding device for welding, including the following steps:

[0025] S1, divide the circumferential seam of the barrel body after spot welding into four 90-degree welds, start the rotating motor to rotate and scan the welds in sections through the infrared sensor, obtain the position of the spot welding points and obtain the corresponding angle values ​​K1-Kn from the initial position to the first spot welding point and each adjacent spot welding point, and the position where the scanning starts is the initial position;

[0026] S2, rotate to the initial position through the rotation motor drive, the first clamp and the second clamp are rotationally locked, and then the swing frame is driven by the first drive motor to swing from the initial position to an angle of K1, then to an angle of K2, until the swing angle Kn is swung to complete the welding of each section; when welding between any two spot welding points A and B, at the A position, the welding head is swung to a direction with an angle of 45° with the tangent direction of point A on the barrel body through the connecting rod mechanism, and the welding head is swung evenly during the welding process so that when it reaches point B, the tangent direction of the welding head and the barrel body at point B is 135°;

[0027] S3, when the first section of the weld is completed, the swing frame is rotated 90 degrees by the rotating motor, and then the second section of the weld is welded. After the welding is completed, the third section of the weld and the fourth section of the weld are welded in sequence;

[0028] S4, after the completion of step S3, the angle of the welding head is adjusted to a direction perpendicular to the tangent of the welding point of the cylinder through the connecting rod mechanism, and then the position of the welding head is fixed, and the first clamp and the second clamp are driven by the rotating motor to rotate 360° to perform repair welding at the original welding position; wherein, during welding, the distance from the welding head to the center of the barrel body is adjusted by the first screw mechanism, the position of the welding head in the direction of the weld width is adjusted by the second screw mechanism, and the angle between the welding head and the tangent of the welding position is adjusted by the connecting rod mechanism.

[0029] Compared with the prior art, the advantages of the present invention are as follows: the present application arranges a swing frame on the vertical frame to rotate around the barrel body, and during rotation, the distance between the welding head and the barrel body is adjusted by the first screw mechanism, and the position of the welding head in the length direction of the barrel body is adjusted by the second screw mechanism. At the same time, the angle of the welding head is adjusted by arranging a connecting rod mechanism, so that during welding, the angle is adjusted while welding between each spot welding point, thereby improving the welding quality at the root of the spot welding point. After the first welding, the angle of the welding head is adjusted to the radial direction of the barrel body and then a repair welding is performed, which greatly improves the uniformity of welding and avoids welding defects at the root of the spot welding point. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0031] Figure 1 It is a front view of the present invention;

[0032] Figure 2 is a perspective view of the present invention (left side);

[0033] Figure 3 is a perspective view of the present invention (right side);

[0034] Figure 4 for Figure 3 Enlarged view of the middle Q;

[0035] Figure 5 It is a three-dimensional diagram of the welded structure;

[0036] Figure 6 It is a three-dimensional diagram of the welded structure;

[0037] Figure 7 It is a structural schematic diagram of the connecting rod mechanism;

[0038] Figure 8 It is a schematic diagram of the structure of the two fixture driving parts;

[0039] Fig. 9 It is a structural diagram of the supporting mechanism;

[0040] Fig.10 It is a schematic diagram of the trajectory of the welding head moving at the root of two spot welding points;

[0041] In the figure: 101, base frame; 1011, stand; 102, extension hole; 103, first fixture; 1031, first transmission box; 104, second fixture; 1041, second transmission box; 105, rotating motor; 106, first gear; 107, rotating shaft; 1071, spur gear; 108, second gear; 109, sleeve; 110, first turntable; 1101, first sliding clamp; 111, second turntable; 1111, second sliding clamp; 20, welding device; 201, mounting frame; 2011, first driving motor; 202, first fixed seat; 203, swing frame; 2031, first arc-shaped slider; 2032, second arc-shaped slider; 2033, rack; 204, first fixed frame; 205, first screw mechanism; 206, second screw mechanism; 30, connecting rod mechanism; 301, first connecting rod; 302, second connecting rod; 303, third connecting rod; 304, first rotating seat; 305, second rotating seat; 306, linkage rod; 307, welding seat; 308, welding head; 309, infrared sensor; 310, connecting rod drive motor; 311, pressure sensor; 401, first motor screw; 402, second motor screw; 50, supporting mechanism; 501, base plate; 502, supporting roller; 503, lifting seat; 504, third motor screw; 505, rangefinder; 506, guide column; 60, controller; 70, driving cylinder. DETAILED DESCRIPTION

[0042] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are only illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention. Example

[0043] Large stainless steel lithium salt storage barrel positioning welding device, such as Figure 1-9 As shown, it includes a base frame 101, a rotatable first clamp 103 is fixed on the left side of the base frame 101, a rotatable second clamp 104 is slidably provided on the right side of the base frame 101, a stand 1011 is provided on the rear side of the base frame 101, and a welding device 20 is provided on the stand 1011, and the center line of the lithium salt storage barrel to be welded is defined as the rotation center line, and the welding device 20 includes:

[0044] The mounting frame 201 is arranged on the stand 1011, and a first driving motor 2011 is arranged on the mounting frame 201. A driving gear is arranged at the output end of the first driving motor 2011, wherein the mounting frame 201 is slidably matched or fixedly connected with the stand 1011;

[0045] A first fixed seat 202, on which a first arc-shaped slide rail is provided;

[0046] The swing frame 203 has a first arc-shaped slider 2031 and a second arc-shaped slider 2032 on both sides thereof. The first arc-shaped slider 2031 extends into the first slide rail and slides with the first slide rail. The swing frame 203 is provided with an arc-shaped rack 2033 meshing with the driving gear.

[0047] The first fixed frame 204 is provided with a second arc-shaped slide rail, the second slider extends into the second slide rail and slides with the second slide rail, and a locking member is provided on the first fixed frame 204 to lock with the swing frame 203;

[0048] A first screw mechanism 205, which is disposed on the first fixed frame 204 and has a lifting slider for achieving lifting;

[0049] The second screw mechanism 206 is arranged on the lifting slider of the first screw mechanism 205 for horizontal sliding, and has a horizontally sliding translation slider;

[0050] The connecting rod mechanism 30 is arranged on the translation slider and can slide along with the translation slider, and includes a first connecting rod 301 fixed on the translation slider, two parallel second connecting rods 302 hinged on the first connecting rod 301, and a third connecting rod 303 hinged at two places with the second connecting rod 302, the third connecting rod 303 is parallel to the first connecting rod 301, and the first connecting rod 301 is provided with a connecting rod driving motor 310 for driving one of the second connecting rods 302 to rotate, the third connecting rod 303 is provided with a linkage structure that is transmission-connected with one of the second connecting rods 302, the linkage structure in the third connecting rod 303 extends out of the third connecting rod 303 and is connected with a welding seat, and the welding seat 307 is provided with an infrared sensor 309 and a welding head 308;

[0051] The controller 60 is disposed on the stand 1011 and is electrically connected to the first drive motor 2011, the first screw mechanism 205, the second screw mechanism 206, the connecting rod drive motor 310, the infrared sensor 309 and the welding head 308;

[0052] The first arc-shaped slider 2031 , the second arc-shaped slider 2032 and the rack 2033 share a common center, and the center is located on the rotation center line.

[0053] like Figure 7 As shown, the third connecting rod 303 is a hollow box-shaped structure, and the linkage structure includes a first rotating seat 304 and a second rotating seat 305 which are rotatably arranged at the top and bottom of the third connecting rod 303. The first rotating seat 304 extends out of the third connecting rod 303 and is connected to the end of one of the second connecting rods 302. The second rotating seat 305 extends out of the third connecting rod 303 and is connected to the welding seat 307. The first rotating seat 304 has two hinge points symmetrical about its rotation center point, and a linkage rod 306 is respectively connected to the two hinge points. The second rotating seat 305 has two hinge points symmetrical about its rotation center point, and the two hinge points are respectively used to hinge the bottoms of the two linkage rods 306. The welding seat 307 is also provided with a pressure sensor 311, which is against the side wall of the barrel body and is used to float and follow the welding surface.

[0054] like Figure 5-6 As shown, the front and back sides of the swing frame 203 are provided with arc-shaped bosses for limiting, and the arc-shaped bosses are provided with arc-shaped wheel grooves. The first fixed seat 202 and the first fixed frame 204 are provided with limiting wheels extending into the wheel grooves, and the limiting wheels abut against the bottom of the wheel grooves to form limiting supports.

[0055] like Figure 5-6As shown, the first slide rail and one of the arc-shaped bosses are arranged at relative positions on the front and back sides of the swing frame 203 and are located at the inner circumference of the swing frame 203, the second slide rail and another arc-shaped boss are arranged on the back and front sides of the swing frame 203 and are located between the inner circumference and outer circumference of the swing frame 203, and the rack 2033 is located at the outer circumference of the front side of the swing frame 203.

[0056] like Figure 5-6 As shown, the first screw mechanism includes a first slide seat slidably set on the first fixed frame 204, a lifting slider slidably connected to the first slide seat, and a first motor screw 401 set on the first slide seat. The screw of the first motor screw 401 passes through the lifting slider and is threadedly engaged with the lifting slider.

[0057] like Figure 5-6 As shown, the second screw mechanism includes a second slide seat slidably set on the lifting slider, a translation slider slidably connected to the second slide seat, and a second motor screw 402 set on the second slide seat. The screw of the second motor screw 402 passes through the translation slider and is threadedly engaged with the translation slider. The connecting rod mechanism 30 is set on the translation slider.

[0058] like Figure 2 and 8 As shown, the base frame 101 is a rectangular structure, with an extension hole 102 in the middle thereof, a rotating motor 105 connected to the controller 60 is provided on the left side of the base frame 101, a rotating shaft 107 is connected to the output end of the rotating motor 105, a first gear 106 for driving the first clamp 103 to rotate is provided on the left side of the rotating shaft 107, the rotating shaft 107 extends along the extension hole 102 and an axial straight tooth 1071 is provided on the right side thereof, a sleeve 109 with a tooth groove is provided on the right side sliding sleeve of the rotating shaft 107, a second gear 108 for driving the second clamp 104 to rotate is provided on the sleeve 109, a driving cylinder 70 connected to the controller 60 is provided on the right side of the base frame 101, and the output end of the driving cylinder 70 is connected to the second clamp 104 for driving the second clamp 104 to slide along the base frame 101.

[0059] like Figure 1 and 2As shown, the first clamp 103 includes a first transmission box 1031 fixed to the left side of the base frame 101, and the second clamp 104 includes a second transmission box 1041 slidably set on the right side of the base frame 101, and a group of transmission gear groups are provided in the first transmission box 1031 and the second transmission box 1041, and each of the two transmission gear groups has a transmission gear provided on a rotating shaft, and the outer ends of the two rotating shafts are respectively provided with a first turntable 110 and a second turntable 111, and the first turntable 110 and the second turntable 111 are both provided with sliding grooves distributed in a ring array, and the first sliding clamp 1101 and the second sliding clamp 1111 are respectively provided in the sliding grooves, wherein the shaft sleeve 109 is located in the second transmission box 1041, and the two groups of transmission gear groups are respectively meshed with the first gear 106 and the second gear 108.

[0060] like Figure 1 , 2 As shown in FIG. 9 , two sets of supporting mechanisms 50 are provided on the base frame 101, and the supporting mechanisms include a base plate 501 provided on the base plate 501, a third motor screw 504 provided on the base plate 501, a guide column 506 provided on the base plate 501, and a lifting seat 503 slidably sleeved on the guide column 506. The third motor screw 504 penetrates the lifting seat 503 and cooperates with the lifting seat 503 thread to drive the lifting seat 503 to move up and down. Two supporting rollers 502 are provided on the lifting seat 503. A rangefinder 505 is also provided in the middle of the base plate 501. The rangefinder 505 and the third motor screw 504 are both connected to the controller 60. Example

[0061] Positioning welding process of large stainless steel lithium salt storage barrels, such as Fig.10 As shown, the large stainless steel lithium salt storage barrel positioning welding device in Example 1 is used for welding, including the following steps:

[0062] S1, divide the circumferential seam of the barrel body after spot welding into four 90-degree welds, start the rotating motor 105 to rotate, and scan the welds in sections through the infrared sensor 309 to obtain the positions of the spot welding points and the corresponding angle values ​​K1-Kn from the initial position to the first spot welding point and each adjacent spot welding point, and the position where the scanning starts is the initial position;

[0063] S2, driven by the rotary motor 105 to rotate to the initial position, the first fixture 103 and the second fixture 104 are rotationally locked, and then the first drive motor 2011 drives the swing frame 203 to swing from the initial position to an angle of K1, then to an angle of K2, until the swing angle Kn is swung to complete the welding of each section; when welding between any two spot welding points A and B, at position A, the welding head 308 is swung to a direction with an angle of 45° with the tangent direction of point A on the barrel body through the connecting rod mechanism 30, and the welding head 308 is evenly swung during the welding process so that when it reaches point B, the tangent direction of the barrel body at point B is 135°;

[0064] S3, when the first weld is completed, the rotating motor 105 is driven to rotate 90 degrees, and the swing frame 203 rotates back to its original position, and then the second weld is welded. After the welding is completed, the third and fourth welds are welded in sequence;

[0065] S4, after the completion of step S3, the angle of the welding head 308 is adjusted to a direction perpendicular to the tangent of the welding point of the cylinder through the connecting rod mechanism 30, and then the position of the welding head 308 is fixed, and the first clamp 103 and the second clamp 104 are driven by the rotating motor 105 to rotate 360° to repair the welding at the original welding position; wherein, during welding, the distance from the welding head 308 to the center of the barrel body is adjusted by the first screw mechanism 205, the position of the welding head 308 in the direction of the weld width is adjusted by the second screw mechanism 206, and the angle between the welding head 308 and the tangent of the welding position is adjusted by the connecting rod mechanism 30.

[0066] The above is an introduction to the large stainless steel lithium salt storage barrel positioning welding device and welding process provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the present invention and its core ideas. It should be pointed out that for ordinary technicians in this technical field, the present invention can also be improved and modified without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A large stainless steel lithium salt storage barrel positioning welding device comprises a base frame, a rotatable first clamp is fixed on the left side of the base frame, a rotatable second clamp is slidably provided on the right side of the base frame, a stand is provided on the rear side of the base frame, and a welding device is provided on the stand, and the center line of the lithium salt storage barrel to be welded is defined as the rotation center line, and the characteristics are as follows: The welding device includes: A mounting frame, which is arranged on the vertical frame, and a first driving motor is arranged on the mounting frame, and a driving gear is arranged at an output end of the first driving motor; A first fixed seat, on which a first arc-shaped slide rail is provided; A swing frame, with a first arc-shaped slider and a second arc-shaped slider respectively disposed on both sides thereof, the first arc-shaped slider extends into the first slide rail and slides with the first slide rail, and the swing frame is provided with an arc-shaped rack meshing with the driving gear; A first fixed frame, on which a second arc-shaped slide rail is provided, a second sliding block extends into the second slide rail and slidably cooperates with the second slide rail, and a locking member is provided on the first fixed frame to lock with the swing frame; A first screw mechanism, which is arranged on the first fixed frame and has a lifting slider for achieving lifting; A second screw mechanism is arranged on the lifting slider of the first screw mechanism for horizontal sliding, and has a translation slider for horizontal sliding; A connecting rod mechanism, which is arranged on the translation slider and can slide along with the translation slider, and comprises a first connecting rod fixed on the translation slider, two parallel second connecting rods hinged on the first connecting rod, and a third connecting rod hinged at two places with the second connecting rods, the third connecting rod is parallel to the first connecting rod and the first connecting rod is provided with a connecting rod driving motor for driving one of the second connecting rods to rotate, a linkage structure connected to one of the second connecting rods in a transmission manner is provided in the third connecting rod, the linkage structure in the third connecting rod extends out of the third connecting rod and is connected to a welding seat, and an infrared sensor and a welding head are provided on the welding seat; A controller is arranged on the stand and is electrically connected to the first drive motor, the first screw mechanism, the second screw mechanism, the connecting rod drive motor, the infrared sensor and the welding head; Among them, the first arc-shaped slider, the second arc-shaped slider and the rack are co-centered and the center of the circle is located on the rotation center line; the third connecting rod is a hollow box-shaped structure, and the linkage structure includes a first rotating seat and a second rotating seat rotatably arranged at the top and bottom of the third connecting rod, the first rotating seat extends out of the third connecting rod and is connected to the end of one of the second connecting rods, the second rotating seat extends out of the third connecting rod and is connected to the welding seat, the first rotating seat has two hinge points symmetrical about its rotation center point and a linkage rod is respectively connected to the two hinge points, and the second rotating seat has two hinge points symmetrical about its rotation center point Symmetrical hinge points and two hinge points are respectively used to hinge the bottoms of the two linkage rods; arc-shaped bosses for limiting are provided on the front and back sides of the swing frame, and arc-shaped wheel grooves are provided on the arc-shaped bosses; limiting wheels extending into the wheel grooves are provided on the first fixed seat and the first fixed frame, and the limiting wheels abut against the bottom of the wheel groove to form limiting supports; the first slide rail and one of the arc-shaped bosses are arranged at relative positions on the front and back sides of the swing frame and are located at the inner circumference of the swing frame, and the second slide rail and the other arc-shaped boss are arranged on the back and front sides of the swing frame and are located between the inner circumference and the outer circumference of the swing frame. The rack is located at the outer circumference of the front face of the swing frame; the base frame is a rectangular structure, an extension hole is provided in the middle thereof, a rotating motor connected to the controller is provided on the left side of the base frame, a rotating shaft is connected to the output end of the rotating motor, a first gear for driving the first fixture to rotate is provided on the left side of the rotating shaft, the rotating shaft extends along the extension hole and an axial spur tooth is provided on the right side of the rotating shaft, a sleeve with a tooth groove is provided on the sliding sleeve on the right side of the rotating shaft, a second gear for driving the second fixture to rotate is provided on the sleeve, a driving cylinder connected to the controller is provided on the right side of the base frame, and the output end of the driving cylinder is connected to the second fixture for driving the second fixture to rotate along the bottom The frame slides; the first clamp includes a first transmission box fixed to the left side of the base frame, and the second clamp includes a second transmission box slidably arranged on the right side of the base frame, a group of transmission gear sets are each provided in the first transmission box and the second transmission box, and a transmission gear in each of the two transmission gear sets is provided with a rotating shaft, and the outer ends of the two rotating shafts are respectively provided with a first turntable and a second turntable, and the first turntable and the second turntable are both provided with sliding grooves distributed in a ring array, and the first sliding clamping platform and the second sliding clamping platform are respectively provided in the sliding groove, wherein the shaft sleeve is located in the second transmission box, and the two transmission gear sets are respectively meshed with the first gear and the second gear.

2. The large stainless steel lithium salt storage barrel positioning welding device according to claim 1 is characterized in that: The first screw mechanism includes a first slide seat slidably arranged on the first fixed frame, a lifting slider slidably connected to the first slide seat, and a first motor screw rod arranged on the first slide seat. The screw rod of the first motor screw rod passes through the lifting slider and is threadedly matched with the lifting slider.

3. The large stainless steel lithium salt storage barrel positioning welding device according to claim 1 is characterized in that: The second screw mechanism includes a second slide seat slidably set on the lifting slider, a translation slider slidably connected to the second slide seat, and a second motor screw rod set on the second slide seat. The screw rod of the second motor screw rod passes through the translation slider and is threadedly engaged with the translation slider. The connecting rod mechanism is set on the translation slider.

4. The large stainless steel lithium salt storage barrel positioning welding device according to claim 1 is characterized in that: Two groups of supporting mechanisms are arranged on the base frame, and the supporting mechanisms include a base plate arranged on the base frame, a third motor screw arranged on the base plate, a guide column arranged on the base plate and a lifting seat slidably sleeved on the guide column. The third motor screw penetrates the lifting seat and cooperates with the lifting seat thread to drive the lifting seat to rise and fall. Two supporting rollers are arranged on the lifting seat. A rangefinder is also arranged in the middle of the base plate. The rangefinder and the third motor screw are both connected to the controller.

5. Positioning welding process for large stainless steel lithium salt storage barrels, characterized in that: The large stainless steel lithium salt storage barrel positioning welding device according to any one of claims 1 to 4 is used for welding, comprising the following steps: S1, divide the circumferential seam of the barrel body after spot welding into four 90-degree welds, start the rotating motor to rotate and scan the welds in sections through the infrared sensor, obtain the position of the spot welding points and obtain the corresponding angle values ​​K1-Kn from the initial position to the first spot welding point and each adjacent spot welding point, and the position where the scanning starts is the initial position; S2, rotate to the initial position through the rotation motor drive, the first clamp and the second clamp are rotationally locked, and then the swing frame is driven by the first drive motor to swing from the initial position to an angle of K1, then to an angle of K2, until the swing angle Kn is swung to complete the welding of each section; when welding between any two spot welding points A and B, at the A position, the welding head is swung to a direction with an angle of 45° with the tangent direction of point A on the barrel body through the connecting rod mechanism, and the welding head is swung evenly during the welding process so that when it reaches point B, the tangent direction of the welding head and the barrel body at point B is 135°; S3, when the first section of the weld is completed, the swing frame is rotated 90 degrees by the rotating motor, and then the second section of the weld is welded. After the welding is completed, the third section of the weld and the fourth section of the weld are welded in sequence; S4, after the completion of step S3, the angle of the welding head is adjusted to a direction perpendicular to the tangent of the welding point of the cylinder through the connecting rod mechanism, and then the position of the welding head is fixed, and the first clamp and the second clamp are driven by the rotating motor to rotate 360° to perform repair welding at the original welding position; wherein, during welding, the distance from the welding head to the center of the barrel body is adjusted by the first screw mechanism, the position of the welding head in the direction of the weld width is adjusted by the second screw mechanism, and the angle between the welding head and the tangent of the welding position is adjusted by the connecting rod mechanism.

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