Stainless steel lithium salt packaging container cylinder longitudinal seam welding machine with deviation correction function

Abstract

The present invention discloses a cylindrical longitudinal seam welding machine for stainless steel lithium salt packaging containers with a deviation correction function, which includes a walking support mechanism for supporting an annular barrel body, a clamping mechanism for clamping both sides of the weld of the annular barrel body, a longitudinal walking mechanism for driving the welding mechanism to move, a welding mechanism for welding, a detection mechanism for detecting whether the weld is standard, and a controller for unified control, wherein the welding structure includes two gear racks that can rotate forward and reverse to drive the welding gun to swing. The present application sets two gear racks that rotate to opposite angles, so that the two gear racks swing different angles in two opposite directions at the same time, and the angle difference between the two swings is the required swing angle, so that the rotation angle of the two motor gears is increased, which is convenient for angle control, thereby ensuring that a stable welding gun can swing within a small angle range, and at the same time, the swing angle can be adjusted to adapt to different weld widths when the weld changes, ensuring that the width of the longitudinal seam welding area meets the requirements, and ensuring that the welding will not deviate from the side walls on both sides of the weld and cause leakage problems.

Description

Technical Field

[0001] The invention relates to a welding device, in particular to a cylindrical longitudinal seam welding machine for stainless steel lithium salt packaging containers with a deviation correction function. Background Art

[0002] Lithium salt packaging containers have the advantages of being hygienic, pressure-resistant, corrosion-resistant, pressure-discharging, and convenient for long-distance transportation. They are mainly used as containers for lithium battery chemical raw materials.

[0003] During the manufacturing process of lithium salt barrels, the barrel body is generally divided into two cylindrical structures for welding. Each section of the cylinder is rolled with a stainless steel plate, and the end is spot welded to shape, and then the weld is welded by a welding machine. Application No. CN201610776689.6 discloses a barrel longitudinal seam welding device. The invention includes a barrel body fixing unit and a longitudinal seam welding unit; the barrel body fixing unit includes a base, the middle part of the base is provided with an arc groove for placing the barrel body, the upper part of the base is provided with an arc convex block matching the arc groove, and the upper part of the arc convex block is provided with a long strip inner support plate along the axial direction of the arc groove; the bottom of the base is provided with a hydraulic cylinder for driving the base to move up and down; the longitudinal seam welding unit includes a frame, a screw is horizontally installed on the frame, the screw is driven by a motor, a base is provided on the screw, a vertical slide rail is provided on the base, a welding gun mounting seat is provided on the vertical slide rail, and a welding gun is installed on the welding gun mounting seat.

[0004] The above-mentioned patent welds the longitudinal seam by moving the welding gun in a straight line during welding. However, since the weld width may be inconsistent during spot welding, the structure and method of longitudinal movement of the welding gun may result in uneven welding or even welding spots deviating from the weld edge in areas with wider weld widths, resulting in leaks. Some welding machines use swing welding to increase the welding width, but existing swing welding machines swing back and forth at the same height and cannot achieve arc swing. In addition, due to the small swing amplitude during circular arc swing, it is difficult to control the swing accuracy using a motor. When an arc rack is used, swinging one tooth may cause the swing angle to be too large. Summary of the invention

[0005] Based on the shortcomings of the prior art that it is unable to adapt to changes in weld width for arc-shaped swing welding and is difficult to achieve small-angle swing welding, the present invention provides a stainless steel lithium salt packaging container cylinder longitudinal seam welding machine with a correction function.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a stainless steel lithium salt packaging container cylinder longitudinal seam welding machine with a deviation correction function, which is used to weld the longitudinal seam of the annular barrel body, and defines the center line of the annular barrel body as the standard axis, including:

[0007] A walking support mechanism, which is used to support the annular barrel body to be welded;

[0008] A clamping mechanism is arranged above the walking support mechanism, and is used to clamp the two sides of the longitudinal seam to be welded on the annular barrel body, and has an opening for exposing the longitudinal seam and the two sides of the longitudinal seam for welding;

[0009] A longitudinal walking mechanism, which is arranged above the clamping mechanism and can walk in the longitudinal direction;

[0010] A welding mechanism, comprising a first mounting seat arranged at the output end of a longitudinal walking mechanism and following the longitudinal walking mechanism in longitudinal movement, a first gear rack being rotatably provided on the first mounting seat, a first arc-shaped side wall being provided at the edge of the first gear rack and a plurality of first meshing teeth being uniformly distributed in an arc shape being provided along the first side wall, a first motor gear being meshed with the first meshing teeth being provided on the first gear rack, a second mounting seat being provided on the first gear rack, a second gear rack being rotatably provided on the second mounting seat, a welding machine assembly being provided on the second gear rack, a second arc-shaped side wall being provided at the edge of the second gear rack and a plurality of second meshing teeth being uniformly distributed in an arc shape being provided along the second side wall, a second motor gear being provided on the second gear rack meshing with the second meshing teeth, wherein the rotation centers of the first gear rack and the second gear rack are located on a standard axis, the centers of the first side wall and the second side wall are located on the standard axis, and the first gear rack and the second gear rack are both rotated around the standard axis under the drive of the two motor gears;

[0011] The detection mechanism comprises an arc-shaped mounting plate and three rangefinders arranged on a first mounting seat, the center of the arc-shaped mounting plate is located on the standard axis, the three rangefinders are evenly distributed in an annular array on the arc-shaped mounting plate, the rangefinder in the middle vertically illuminates the middle of the longitudinal seam, the rangefinders on both sides are symmetrical about the vertical plane where the central axis is located, and the two rangefinders illuminate the outer side walls on both sides of the longitudinal seam of the annular barrel body along the radial direction of the arc-shaped mounting plate;

[0012] A controller connected to the walking support mechanism, the clamping mechanism, the longitudinal walking mechanism, the welding mechanism and the detection mechanism to control the actions of each mechanism;

[0013] Among them, the first motor gear and the second motor gear both have angle sensors for controlling their rotation angles, and the rotation angle A corresponding to the rotation of the first meshing tooth by M1 teeth is not equal to the rotation angle B corresponding to the rotation of the second meshing tooth by M2 teeth.

[0014] Preferably, the distance from the first gear rack to the central axis is smaller than the distance from the second gear rack to the central axis.

[0015] Preferably, the first gear rack and the second gear rack both include an arc-shaped frame body and a driving platform arranged on one side of the frame body. The driving platform is an arc-shaped structure with its center located on the central axis. The first meshing teeth and the second meshing teeth are respectively provided on the outer side walls of the driving platforms of the two gear racks.

[0016] Preferably, the first gear rack and the second gear rack both include a sliding limit platform arranged on one side of the frame body, the sliding limit platform is an arc-shaped structure and its center is located on the central axis, the first mounting seat and the second mounting seat are both provided with arc-shaped slide rails, and the two sliding limit platforms are respectively inserted from the ends of the two slide rails and slideably cooperate with the two slide rails respectively.

[0017] Preferably, the first gear rack and the second gear rack both include an arc-shaped clamping table arranged on one side of the frame body, a clamping groove or a clamping tooth groove is provided on the inner side wall of the clamping table, the center of the clamping table is located on the central axis, and a clamping wheel or a clamping gear is rotatably provided on the first mounting seat and the second mounting seat, and the clamping wheel or the clamping gear abuts against the clamping groove or the clamping tooth groove. When the first gear rack and the second gear rack rotate, the clamping wheel or the clamping gear rotates.

[0018] Preferably, the walking support mechanism includes a positioning track arranged on the ground and a scissors-type lifting mechanism arranged above the positioning track, the positioning track has two left and right tracks, and the outer sides of the two tracks are provided with limiting bosses, the bottom of the scissors-type lifting mechanism is provided with left and right groups of walking wheels, and the maximum spacing of the walking wheels in the left and right directions is the same as the spacing of the limiting bosses so that the walking wheels can walk close to the limiting bosses, and the top of the scissors-type lifting mechanism is provided with a shelf frame, the shelf frame includes a shelf seat at the bottom and inclined frame tubes symmetrically arranged on the left and right sides of the shelf seat, a plurality of limiting bosses are provided on the inclined frame tube in the longitudinal direction, the annular barrel body is placed on the inclined frame tube and is fixed in position by the limiting bosses against the end portions, and the contact surface between the inclined frame tube and the annular barrel body is an arc surface.

[0019] Preferably, the clamping mechanism includes a frame, two upper fixed seats arranged on the frame, and a lower fixed seat arranged on the frame, a gap is provided between the upper fixed seat and the lower fixed seat, a V-shaped opening for welding is provided in the middle of the two upper fixed seats, and arc-shaped upper clamping surfaces are provided on the bottom surfaces of both of them, and two groups of clamping cylinders are provided on the lower fixed seat, and the output ends of the two groups of clamping cylinders are connected to a clamping block, and the top of the clamping block is provided with a lower clamping surface that is in contact with the upper clamping surface, the extension and retraction directions of the two groups of clamping cylinders are consistent with the radial direction of the annular barrel body, and after the two groups of clamping cylinders are extended, the two lower clamping surfaces respectively cooperate with the upper clamping surface to clamp the annular barrel body at the gap and make the longitudinal seam located at the V-shaped opening.

[0020] Preferably, the longitudinal walking mechanism includes a vertical frame, a mounting seat plate arranged on the vertical frame, a longitudinal slide rail arranged on the mounting seat plate and a sliding seat slidably arranged on the longitudinal slide rail, a gear rack driving mechanism driven by a servo motor is arranged between the mounting seat plates, or a screw mechanism driven by a servo motor is arranged between the mounting seat plate and the sliding seat, and the first mounting seat is arranged on the sliding seat.

[0021] Preferably, the welding machine assembly includes a first flat-bottom U-shaped seat opening backward, a second flat-bottom U-shaped seat vertically slidably arranged on the first flat-bottom U-shaped seat and opening upward, a welding seat slidably arranged on the second flat-bottom U-shaped seat, and a welding gun arranged on the welding seat, a lead screw structure is provided in the opening of the first flat-bottom U-shaped seat and its nut seat is connected to the second flat-bottom U-shaped seat, a lead screw structure is provided in the opening of the second flat-bottom U-shaped seat and its nut seat is connected to the welding seat, the top part of the welding seat is located in the opening of the second flat-bottom U-shaped seat and fits with the opening side wall of the second flat-bottom U-shaped seat so that the welding seat can slide back and forth in the opening of the second flat-bottom U-shaped seat, wherein two vertical slide rails and vertical sliders are provided on both sides of the first flat-bottom U-shaped seat, and the vertical slider is connected to the second flat-bottom U-shaped seat while vertically sliding with the vertical slide rails.

[0022] The above-mentioned stainless steel lithium salt packaging container cylinder longitudinal seam welder with a deviation correction function is used for welding, which includes the following steps:

[0023] S1, material transfer: move the walking support mechanism to the standard annular barrel storage place, then place the standard annular barrel on the walking support mechanism, and then move the walking support mechanism to the clamping mechanism;

[0024] S2, clamping: clamping the two sides of the longitudinal seam of the standard annular barrel body through the clamping mechanism;

[0025] S3, standard value acquisition: the welding mechanism is driven to move longitudinally at a constant speed of v through the longitudinal walking mechanism, and three distance meters are turned on for distance measurement to obtain the corresponding relationship between the distance values ​​at different positions and the longitudinal coordinates. The longitudinal distance value is calculated by vt, where t is the time for the longitudinal walking mechanism to move at a constant speed;

[0026] S4, obtaining a comparison value: changing the standard annular barrel body to the annular barrel body to be welded, and repeating S1-S3;

[0027] S5, welding: the welding mechanism is driven to move longitudinally at a constant speed of v through the longitudinal walking mechanism, and the welding assembly is opened at the same time. While walking longitudinally, the first motor gear is controlled by the controller to drive the first meshing tooth to rotate NxM1 teeth, and the second motor gear is controlled by the controller to drive the second meshing tooth to rotate NxM2 teeth in the opposite direction. Both rotate at a constant speed and the time for both to rotate NxM1 and NxM2 teeth is the same, where M1, M2 and N are positive integers, and the angle of rotation is Nx (AB);

[0028] In step S5, when walking longitudinally to the spot welding point, the rotation speed of the first motor gear and the second motor gear increases to reduce the welding time of the spot welding area. In addition, at the same position, the distance values ​​of the distance meters on both sides are compared with the two distance values ​​measured on both sides of the standard annular barrel body. When the distance value measured by the annular barrel body to be welded is less than the distance value of the standard annular barrel body, it means that the width of the longitudinal seam is greater than the standard value. At this time, the N value in step S5 is increased and the rotation speeds of the first motor gear and the second motor gear are increased to increase the swing angle at the same time. Conversely, when the distance value measured by the annular barrel body to be welded is greater than the distance value of the standard annular barrel body, it means that the width of the longitudinal seam is less than the standard value. At this time, the N value in step S5 is reduced and the rotation speeds of the first motor gear and the second motor gear are reduced to reduce the swing angle at the same time. Before and after the adjustment, the time for the welding gun to swing from the leftmost side to the rightmost side remains unchanged.

[0029] Compared with the prior art, the advantages of the present invention are as follows: the present application sets up two gear racks rotating at opposite angles, so that the two gear racks swing at different angles in two opposite directions at the same time, and the angle difference between the two swings is the required swing angle, thereby increasing the rotation angle of the two motor gears, facilitating angle control, thereby ensuring that a stable welding gun can swing within a small angle range, and at the same time, the swing angle can be adjusted to adapt to different weld widths when the weld changes, ensuring that the width of the longitudinal seam welding area meets the requirements, and ensuring that the welding will not deviate from the side walls on both sides of the weld and cause welding leaks. 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 A perspective view of the present application;

[0032] Figure 2 It is a left view of this application;

[0033] Figure 3 This is the main view of this application;

[0034] Figure 4 It is a three-dimensional diagram of the welding mechanism;

[0035] Figure 5 It is the main view of the welding mechanism;

[0036] Figure 6 It is the left view of the welding mechanism;

[0037] Figure 7 and Figure 8 This is an exploded view of the welding mechanism;

[0038] Fig. 9 and 10 It is a three-dimensional diagram of the walking support mechanism;

[0039] Fig.11 is a structural schematic diagram of the clamping mechanism;

[0040] In the figure: 01, annular barrel; 10, walking support mechanism; 101, scissor-type lifting mechanism; 102, positioning track; 1021, limiting boss; 103, shelf; 1031, shelf seat; 1032, tilting frame tube; 1033, limiting boss; 104, walking wheel; 20, clamping mechanism; 201, upper fixed seat; 202, lower fixed seat; 203, pressing block; 204, clamping cylinder; 30, longitudinal walking mechanism; 301, longitudinal slide rail; 302, sliding seat; 303, gear rack driving mechanism; 40, welding mechanism; 400, welding machine assembly; 4001, first flat bottom U-shaped seat; 4002, second flat bottom U-shaped seat; 4003, welding gun; 401, first gear rack; 4011, driving platform; 4012, first meshing tooth; 4013, sliding limit table; 4014, clamping table; 40141, clamping groove; 4015, clamping wheel; 402, second gear rack; 4022, second meshing tooth; 403, first mounting seat; 404, second mounting seat; 405, first motor gear; 406, second motor gear; 501, locking cylinder; 502, locking frame; 60, detection mechanism; 601, arc-shaped mounting plate; 602, rangefinder. DETAILED DESCRIPTION

[0041] 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

[0042] Stainless steel lithium salt packaging container cylinder longitudinal seam welding machine with deviation correction function, reference Figure 1-Figure 11 , which is used to weld the longitudinal seam of the annular barrel body 01, and defines the center line of the annular barrel body 01 as the standard axis, including:

[0043] A walking support mechanism 10, which is used to support the annular barrel body 01 to be welded;

[0044] A clamping mechanism 20 is disposed above the walking support mechanism 10 and is used to clamp the two sides of the longitudinal seam to be welded on the annular barrel body 01 and has an opening for exposing the longitudinal seam and the two sides of the longitudinal seam for welding;

[0045] A longitudinal walking mechanism 30, which is disposed above the clamping mechanism 20 and can walk in the longitudinal direction;

[0046] The welding mechanism 40 includes a first mounting seat 403 arranged at the output end of the longitudinal walking mechanism 30 and following the longitudinal walking mechanism 30 to move longitudinally, a first gear rack 401 is rotatably provided on the first mounting seat 403, an edge of the first gear rack 401 is provided with a first arc-shaped side wall and a plurality of first meshing teeth 4012 are uniformly distributed along the first side wall, a first motor gear 405 meshing with the first meshing teeth 4012 is provided on the first gear rack 401, a second mounting seat 404 is rotatably provided on the second mounting seat 404, 02, a welding machine assembly 400 is provided on the second gear rack 402, an arc-shaped second side wall is provided on the edge of the second gear rack 402, and a plurality of arc-shaped uniformly distributed second meshing teeth 4022 are provided along the second side wall, and a second motor gear 406 meshing with the second meshing teeth 4022 is provided on the second gear rack 402, wherein the rotation centers of the first gear rack 401 and the second gear rack 402 are located on the standard axis, and the centers of the first side wall and the second side wall are located on the standard axis, and the first gear rack 401 and the second gear rack 402 are driven by the two motor gears to rotate around the standard axis;

[0047] The detection mechanism 60 includes an arc-shaped mounting plate 601 and three rangefinders 602 arranged on the first mounting seat 403. The center of the arc-shaped mounting plate 601 is located on the standard axis. The three rangefinders 602 are evenly distributed in a circular array on the arc-shaped mounting plate 601. The rangefinder 602 in the middle vertically illuminates the middle of the longitudinal seam. The rangefinders 602 on both sides are symmetrical about the vertical plane where the central axis is located and the two rangefinders 602 illuminate the outer side walls on both sides of the longitudinal seam of the annular barrel body 01 along the radial direction of the arc-shaped mounting plate 601.

[0048] A controller connected to the walking support mechanism 10, the clamping mechanism 20, the longitudinal walking mechanism 30, the welding mechanism 40 and the detection mechanism 60 for controlling the actions of each mechanism;

[0049] Wherein, the first motor gear 405 and the second motor gear 406 both have an angle sensor for controlling their rotation angles, and the angle A corresponding to the rotation of the first meshing tooth 4012 by one pitch is not equal to the angle B corresponding to the rotation of the second meshing tooth 4022 by one pitch. Wherein, the first motor gear 405 and the second motor gear 406 both have angle sensors and both motors are bidirectional motors. This solution sets two gear racks that rotate to opposite angles, so that the two gear racks swing to different angles in two opposite directions at the same time, and the angle difference between the two swings is the required swing angle, so that the rotation angle of the two motor gears is increased, which is convenient for angle control, thereby ensuring that the stable welding gun 4003 can swing within a small angle range, and the swing angle can be adjusted to adapt to different weld widths when the weld changes, ensuring that the width of the longitudinal seam welding area meets the requirements, and ensuring that the welding will not have a leak problem caused by deviation from the side walls on both sides of the weld. For example, when the first gear rack 401 swings, the corresponding angle of rotation of one tooth is 1.6°, when the second gear rack 402 swings, the corresponding angle of rotation of one tooth is 1.3°, when the first gear rack 401 rotates 4 teeth, the corresponding angle of rotation is 6.4°, and when the second gear rack 402 rotates 5 teeth, the corresponding angle of rotation is 6.5°. 6.4°-6.5°=-0.1° means that the welding gun 4003 rotates -0.1°. If it is necessary to rotate -0.5°, multiply the number of rotated teeth of the first gear rack 401 and the second gear rack 402 by 6 times.

[0050] like Figure 5-6 As shown, the distance from the first gear rack 401 to the central axis is smaller than the distance from the second gear rack 402 to the central axis. Since the rotation angle A corresponding to the rotation of the first meshing tooth 4012 on the first gear rack 401 by one tooth is larger than the rotation angle B corresponding to the rotation of the second meshing tooth 4022 by one tooth pitch, the radius of the second gear rack 402 is larger than the radius of the first gear rack 401, which is beneficial to arrange more teeth on the second gear rack 402 and reduce the rotation angle corresponding to one tooth.

[0051] like Figure 4-8 As shown, the first gear rack 401 and the second gear rack 402 both include an arc-shaped frame body and a driving platform 4011 arranged on one side of the frame body. The driving platform 4011 is an arc-shaped structure and its center is located on the central axis. The first meshing teeth 4012 and the second meshing teeth 4022 are respectively provided on the outer side walls of the driving platforms 4011 of the two gear racks.

[0052] like Figure 4-8As shown, the first gear rack 401 and the second gear rack 402 both include a sliding stopper 4013 disposed on one side of the rack body, the sliding stopper 4013 is an arc-shaped structure and its center is located on the central axis, the first mounting seat 403 and the second mounting seat 404 are both provided with arc-shaped slide rails, and the two sliding stopper 4013 are respectively inserted from the ends of the two slide rails and slide with the two slide rails respectively. In this solution, by providing the sliding stopper 4013 and the slide rails for cooperation, it can be ensured that the first gear rack 401 and the second gear rack 402 both rotate around the central axis.

[0053] like Figure 4-8 As shown, the first gear rack 401 and the second gear rack 402 both include an arc-shaped clamping platform 4014 arranged on one side of the frame body, and a clamping groove 40141 or a clamping tooth groove is provided on the inner side wall of the clamping platform 4014. The center of the clamping platform 4014 is located on the central axis. A clamping wheel 4015 or a clamping gear is rotatably provided on the first mounting seat 403 and the second mounting seat 404. The clamping wheel 4015 or the clamping gear abuts against the clamping groove 40141 or the clamping tooth groove. When the first gear rack 401 and the second gear rack 402 rotate, the clamping wheel 4015 or the clamping gear rotates. Since the sliding limit platform 4013 and the slide rail will wear, their limiting function will fail when they are worn to a certain extent. Therefore, this solution realizes limiting by setting a clamping wheel 4015 or a clamping gear and a clamping groove 40141 or a clamping tooth groove to ensure that the first gear rack 401 and the second gear rack 402 both rotate around the central axis. Since the clamping wheel 4015 or the clamping gear can rotate on its own, it can greatly reduce the wear between the clamping groove 40141 or the clamping tooth groove and increase the positioning accuracy.

[0054] like Figure 1 , 2As shown in , 9 and 10, the walking support mechanism 10 includes a positioning track 102 arranged on the ground and a scissor lift mechanism arranged above the positioning track 102. The positioning track 102 has two left and right rails, and the outer sides of the two rails are provided with limiting bosses 1021. The bottom of the scissor lift mechanism is provided with two left and right groups of walking wheels 104, and the maximum spacing of the walking wheels 104 in the left and right directions is the same as the spacing of the limiting bosses 1021, so that the walking wheels 104 are close to the limiting bosses 1021 for walking. The scissor lift mechanism A shelf 103 is provided on the top of the lifting mechanism 101. The shelf 103 includes a shelf seat 1031 at the bottom and an inclined frame tube 1032 symmetrically arranged on the left and right sides of the shelf seat 1031. The inclined frame tube 1032 is provided with a plurality of limiting protrusions 1033 along the longitudinal direction. The annular barrel body 01 is placed on the inclined frame tube 1032 and is fixed by the limiting protrusions 1033 against the ends of both ends. The contact surface between the inclined frame tube 1032 and the annular barrel body 01 is an arc surface. The walking wheel 104 can be equipped with a motor drive. In addition, the scissor-type lifting mechanism 101 is driven by a cylinder to lift. The positioning track 102 includes a horizontal section and an inclined section. The inclined section is connected to the ground for the walking wheel 104 to walk to the ground so as to move to the storage place of the annular barrel body 01.

[0055] like Fig.11 As shown, the clamping mechanism 20 includes a frame, two upper fixed seats 201 arranged on the frame, and a lower fixed seat 202 arranged on the frame. A gap is provided between the upper fixed seat 201 and the lower fixed seat 202, a V-shaped opening for welding is provided in the middle of the two upper fixed seats 201, and arc-shaped upper clamping surfaces are provided on the bottom surfaces of both of them, and two groups of clamping cylinders 204 are provided on the lower fixed seat 202, and the output ends of the two groups of clamping cylinders 204 are connected to a clamping block 203, and the top of the clamping block 203 is provided with a lower clamping surface that fits with the upper clamping surface, the extension and retraction directions of the two groups of clamping cylinders 204 are consistent with the radial direction of the annular barrel body 01, and after the two groups of clamping cylinders 204 are extended, the two lower clamping surfaces respectively cooperate with the upper clamping surfaces to clamp the annular barrel body 01 at the gap and make the longitudinal seam located at the V-shaped opening. When clamping, adjust the height of the walking support mechanism 10 and push the walking support mechanism 10 so that the top of the annular barrel body 01 is inserted into the gap from the end of the gap. Then, after adjusting the position of the annular barrel body 01, push the two clamping blocks through the cylinder to press the annular barrel body 01 to the bottom of the upper fixed seat 201. After pressing, the longitudinal seam is located in the middle of the V-shaped opening, and the welding end of the welding assembly extends into the V-shaped opening to perform swing welding on the longitudinal seam.

[0056] like Figure 1As shown, the longitudinal walking mechanism 30 includes a stand, a mounting seat plate arranged on the stand, a longitudinal slide rail 301 arranged on the mounting seat plate, and a sliding seat 302 slidably arranged on the longitudinal slide rail 301, a gear rack driving mechanism 303 driven by a servo motor is arranged between the mounting seat plates, or a lead screw mechanism driven by a servo motor is arranged between the mounting seat plate and the sliding seat 302, and the first mounting seat 403 is arranged on the sliding seat 302. The longitudinal walking mechanism 30 in this solution is used to drive the entire welding mechanism 40 to perform longitudinal walking.

[0057] like Figure 4-8 As shown, the welding machine assembly 400 includes a first flat bottom U-shaped seat 4001 with an opening facing backward, a second flat bottom U-shaped seat 4002 vertically slidably disposed on the first flat bottom U-shaped seat 4001 and with an opening facing upward, a welding seat slidably disposed on the second flat bottom U-shaped seat 4002, and a welding gun 4003 disposed on the welding seat, a lead screw structure is disposed in the opening of the first flat bottom U-shaped seat 4001, and a nut seat thereof is connected to the second flat bottom U-shaped seat 4002, and the second flat bottom U-shaped seat 4002 is connected to the second flat bottom U-shaped seat 4002. The opening of the first flat bottom U-shaped seat 4001 is provided with a lead screw structure and its nut seat is connected to the welding seat. The top part of the welding seat is located in the opening of the second flat bottom U-shaped seat 4002 and fits with the opening side wall of the second flat bottom U-shaped seat 4002 so that the welding seat can slide back and forth in the opening of the second flat bottom U-shaped seat 4002. Two vertical slide rails and a vertical slider are provided on both sides of the first flat bottom U-shaped seat 4001. The vertical slider is connected to the second flat bottom U-shaped seat 4002 while vertically sliding with the vertical slide rail. The welding machine assembly 400 in this scheme can adjust the height of the welding gun 4003 vertically, wherein the height adjustment can be used for welding the annular barrel body 01 with a varying caliber. In addition, the welding gun 4003 can also be adjusted in the longitudinal position, which is used to adjust the distance between the distance meter 602 and the distance meter 602 after the distance meter 602 is installed, to ensure that the distance is the same as the preset distance, thereby ensuring that the time when the welding gun 4003 reaches the initial position of the distance measurement is the same as the preset arrival time.

[0058] When welding, the following steps are used:

[0059] S1, material transfer: move the walking support mechanism 10 to the standard annular barrel storage place, then place the standard annular barrel on the walking support mechanism 10, and then move the walking support mechanism 10 to the clamping mechanism 20;

[0060] S2, clamping: clamping the two sides of the longitudinal seam of the standard annular barrel body by the clamping mechanism 20;

[0061] S3, standard value acquisition: the welding mechanism 40 is driven to move longitudinally at a constant speed v by the longitudinal walking mechanism 30, and the three distance meters 602 are turned on for distance measurement to obtain the corresponding relationship between the distance values ​​at different positions and the longitudinal coordinates. The longitudinal distance value is calculated by vt, where t is the time for the longitudinal walking mechanism 30 to move at a constant speed;

[0062] S4, obtaining comparison values: changing the standard annular barrel body 01 to the annular barrel body 01 to be welded, and repeating S1-S3;

[0063] S5, welding: the longitudinal walking mechanism 30 drives the welding mechanism 40 to move longitudinally at a constant speed of v, and the welding assembly is opened at the same time. While walking longitudinally, the controller controls the first motor gear 405 to drive the first meshing tooth 4012 to rotate NxM1 teeth, and the controller controls the second motor gear 406 to drive the second meshing tooth 4022 to rotate NxM2 teeth in the opposite direction. Both rotate at a constant speed and the time for both to rotate NxM1 and NxM2 teeth is the same, where M1, M2 and N are positive integers, and the angle of rotation is Nx (AB);

[0064] In step S5, when walking longitudinally to the spot welding point, the rotation speed of the first motor gear 405 and the second motor gear 406 is increased to reduce the welding time of the spot welding area. In addition, at the same position, the distance values ​​of the rangefinders 602 on both sides are compared with the two distance values ​​measured on both sides of the standard annular barrel body 01. When the distance value measured by the annular barrel body 01 to be welded is less than the distance value of the standard annular barrel body 01, it means that the width of the longitudinal seam is greater than the standard value. At this time, the N value in step S5 is increased and the rotation speeds of the first motor gear 405 and the second motor gear 406 are increased to increase the swing angle at the same time. Conversely, when the distance value measured by the annular barrel body 01 to be welded is greater than the distance value of the standard annular barrel body 01, it means that the width of the longitudinal seam is less than the standard value. At this time, the N value in step S5 is reduced and the rotation speeds of the first motor gear 405 and the second motor gear 406 are reduced to reduce the swing angle at the same time. Before and after the adjustment, the time for the welding gun 4003 to swing from the leftmost side to the rightmost side remains unchanged.

[0065] like Figure 1-2 As shown, a locking cylinder 501 is hinged on the mounting seat plate, a locking frame 502 is hinged on the upper fixed seat 201, the locking cylinder is hinged to the locking frame 502, and the locking cylinder 501 is used to drive the locking frame 502 to rotate to close the opening at the end of the gap between the upper and lower fixed seats 201 and 202.

[0066] The above is an introduction to the cylindrical longitudinal seam welding machine for stainless steel lithium salt packaging containers with a deviation correction function 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 stainless steel lithium salt packaging container cylinder longitudinal seam welding machine with a deviation correction function, which is used to weld the longitudinal seam of an annular barrel body, and defines the center line of the annular barrel body as the standard axis, characterized in that: include: A walking support mechanism, which is used to support the annular barrel body to be welded; A clamping mechanism is arranged above the walking support mechanism, and is used to clamp two sides of the longitudinal seam to be welded on the annular barrel body, and has an opening for exposing the longitudinal seam and two sides of the longitudinal seam for welding; A longitudinal walking mechanism, which is arranged above the clamping mechanism and can walk in the longitudinal direction; A welding mechanism, comprising a first mounting seat arranged at the output end of a longitudinal walking mechanism and following the longitudinal walking mechanism in longitudinal movement, a first gear rack being rotatably provided on the first mounting seat, a first arc-shaped side wall being provided at the edge of the first gear rack and a plurality of first meshing teeth being uniformly distributed in an arc shape being provided along the first side wall, a first motor gear being meshed with the first meshing teeth being provided on the first gear rack, a second mounting seat being provided on the first gear rack, a second gear rack being rotatably provided on the second mounting seat, a welding machine assembly being provided on the second gear rack, a second arc-shaped side wall being provided at the edge of the second gear rack and a plurality of second meshing teeth being uniformly distributed in an arc shape being provided along the second side wall, a second motor gear being provided on the second gear rack meshing with the second meshing teeth, wherein the rotation centers of the first gear rack and the second gear rack are located on a standard axis, the centers of the first side wall and the second side wall are located on the standard axis, and the first gear rack and the second gear rack are both rotated around the standard axis under the drive of the two motor gears; The detection mechanism comprises an arc-shaped mounting plate and three rangefinders arranged on a first mounting seat, the center of the arc-shaped mounting plate is located on the standard axis, the three rangefinders are evenly distributed in an annular array on the arc-shaped mounting plate, the rangefinder in the middle vertically illuminates the middle of the longitudinal seam, the rangefinders on both sides are symmetrical about the vertical plane where the central axis is located, and the two rangefinders illuminate the outer side walls on both sides of the longitudinal seam of the annular barrel body along the radial direction of the arc-shaped mounting plate; A controller connected to the walking support mechanism, the clamping mechanism, the longitudinal walking mechanism, the welding mechanism and the detection mechanism to control the actions of each mechanism; Wherein, both the first motor gear and the second motor gear have angle sensors for controlling their rotation angles, and the rotation angle A corresponding to the rotation of the first meshing tooth by M1 teeth is not equal to the rotation angle B corresponding to the rotation of the second meshing tooth by M2 teeth.

2. The stainless steel lithium salt packaging container cylinder longitudinal seam welding machine with deviation correction function according to claim 1 is characterized in that: The distance from the first gear rack to the central axis is smaller than the distance from the second gear rack to the central axis.

3. The stainless steel lithium salt packaging container cylinder longitudinal seam welding machine with deviation correction function according to claim 1 is characterized in that: The first gear rack and the second gear rack both include an arc-shaped frame body and a driving platform arranged on one side of the frame body. The driving platform is an arc-shaped structure with its center located on the central axis. The first meshing teeth and the second meshing teeth are respectively arranged on the outer side walls of the driving platforms of the two gear racks.

4. The stainless steel lithium salt packaging container cylinder longitudinal seam welding machine with deviation correction function according to claim 3 is characterized in that: The first gear rack and the second gear rack both include a sliding limit platform arranged on one side of the frame body, the sliding limit platform is an arc-shaped structure and its center is located on the central axis, the first mounting seat and the second mounting seat are both provided with arc-shaped slide rails, and the two sliding limit platforms are respectively inserted from the ends of the two slide rails and slideably cooperate with the two slide rails respectively.

5. The stainless steel lithium salt packaging container cylinder longitudinal seam welding machine with deviation correction function according to claim 3 or 4, characterized in that: The first gear rack and the second gear rack both include an arc-shaped clamping platform arranged on one side of the frame body, a clamping groove or a clamping tooth groove is provided on the inner side wall of the clamping platform, the center of the clamping platform is located on the central axis, and a clamping wheel or a clamping gear is rotatably provided on the first mounting seat and the second mounting seat, and the clamping wheel or the clamping gear is abutted against the clamping groove or the clamping tooth groove. When the first gear rack and the second gear rack rotate, the clamping wheel or the clamping gear rotates.

6. The stainless steel lithium salt packaging container cylinder longitudinal seam welding machine with deviation correction function according to claim 1 is characterized in that: The walking support mechanism includes a positioning track arranged on the ground and a scissor lift mechanism arranged above the positioning track, the positioning track has two left and right tracks, and the outer sides of the two tracks are provided with limiting bosses, the bottom of the scissor lift mechanism is provided with left and right groups of walking wheels, and the maximum spacing of the walking wheels in the left and right directions is the same as the spacing of the limiting bosses, so that the walking wheels walk close to the limiting bosses, and the top of the scissor lift mechanism is provided with a shelf frame, the shelf frame includes a shelf seat at the bottom and inclined frame tubes symmetrically arranged on the left and right sides of the shelf seat, a plurality of limiting bosses are provided on the inclined frame tube in the longitudinal direction, the annular barrel body is placed on the inclined frame tube and is fixed by abutting against the end portions at both ends through the limiting bosses, and the contact surface between the inclined frame tube and the annular barrel body is an arc surface.

7. The stainless steel lithium salt packaging container cylinder longitudinal seam welding machine with deviation correction function according to claim 1 is characterized in that: The clamping mechanism includes a frame, two upper fixing seats arranged on the frame, and a lower fixing seat arranged on the frame. A gap is provided between the upper fixing seat and the lower fixing seat, a V-shaped opening for welding is provided in the middle of the two upper fixing seats, and arc-shaped upper clamping surfaces are provided on the bottom surfaces of both of them, and two groups of clamping cylinders are provided on the lower fixing seat, and the output ends of the two groups of clamping cylinders are connected to a clamping block, and the top of the clamping block is provided with a lower clamping surface that is in contact with the upper clamping surface. The extension and retraction directions of the two groups of clamping cylinders are consistent with the radial direction of the annular barrel body, and after the two groups of clamping cylinders are extended, the two lower clamping surfaces respectively cooperate with the upper clamping surface to clamp the annular barrel body at the gap and make the longitudinal seam located at the V-shaped opening.

8. The stainless steel lithium salt packaging container cylinder longitudinal seam welding machine with deviation correction function according to claim 1 is characterized in that: The longitudinal walking mechanism includes a vertical frame, a mounting seat plate arranged on the vertical frame, a longitudinal slide rail arranged on the mounting seat plate and a sliding seat slidably arranged on the longitudinal slide rail. A gear rack driving mechanism driven by a servo motor is arranged between the mounting seat plates, or a screw mechanism driven by a servo motor is arranged between the mounting seat plate and the sliding seat, and the first mounting seat is arranged on the sliding seat.

9. The stainless steel lithium salt packaging container cylinder longitudinal seam welding machine with deviation correction function according to claim 1 is characterized in that: The welding machine assembly includes a first flat-bottom U-shaped seat opening backward, a second flat-bottom U-shaped seat vertically slidably arranged on the first flat-bottom U-shaped seat and opening upward, a welding seat slidably arranged on the second flat-bottom U-shaped seat, and a welding gun arranged on the welding seat, a lead screw structure is provided in the opening of the first flat-bottom U-shaped seat and its nut seat is connected to the second flat-bottom U-shaped seat, a lead screw structure is provided in the opening of the second flat-bottom U-shaped seat and its nut seat is connected to the welding seat, the top part of the welding seat is located in the opening of the second flat-bottom U-shaped seat and fits with the opening side wall of the second flat-bottom U-shaped seat so that the welding seat can slide back and forth in the opening of the second flat-bottom U-shaped seat, wherein two vertical slide rails and vertical sliders are provided on both sides of the first flat-bottom U-shaped seat, and the vertical slider is connected to the second flat-bottom U-shaped seat while vertically sliding with the vertical slide rails.

10. The stainless steel lithium salt packaging container cylinder longitudinal seam welding machine with deviation correction function according to claim 1, characterized in that: The following steps are used during welding: S1, material transfer: move the walking support mechanism to the standard annular barrel storage place, then place the standard annular barrel on the walking support mechanism, and then move the walking support mechanism to the clamping mechanism; S2, clamping: clamping the two sides of the longitudinal seam of the standard annular barrel body through the clamping mechanism; S3, standard value acquisition: the welding mechanism is driven to move longitudinally at a constant speed of v through the longitudinal walking mechanism, and three distance meters are turned on for distance measurement to obtain the corresponding relationship between the distance values ​​at different positions and the longitudinal coordinates. The longitudinal distance value is calculated by vt, where t is the time for the longitudinal walking mechanism to move at a constant speed; S4, obtaining a comparison value: changing the standard annular barrel body to the annular barrel body to be welded, and repeating S1-S3; S5, welding: the welding mechanism is driven to move longitudinally at a constant speed of v through the longitudinal walking mechanism, and the welding assembly is opened at the same time. While walking longitudinally, the first motor gear is controlled by the controller to drive the first meshing tooth to rotate NxM1 teeth, and the second motor gear is controlled by the controller to drive the second meshing tooth to rotate NxM2 teeth in the opposite direction. Both rotate at a constant speed and the time for both to rotate NxM1 and NxM2 teeth is the same, where M1, M2 and N are positive integers, and the angle of rotation is Nx (AB); In step S5, when walking longitudinally to the spot welding point, the rotation speed of the first motor gear and the second motor gear increases to reduce the welding time of the spot welding area. In addition, at the same position, the distance values ​​of the distance meters on both sides are compared with the two distance values ​​measured on both sides of the standard annular barrel body. When the distance value measured by the annular barrel body to be welded is less than the distance value of the standard annular barrel body, it means that the width of the longitudinal seam is greater than the standard value. At this time, the N value in step S5 is increased and the rotation speeds of the first motor gear and the second motor gear are increased to increase the swing angle at the same time. Conversely, when the distance value measured by the annular barrel body to be welded is greater than the distance value of the standard annular barrel body, it means that the width of the longitudinal seam is less than the standard value. At this time, the N value in step S5 is reduced and the rotation speeds of the first motor gear and the second motor gear are reduced to reduce the swing angle at the same time. Before and after the adjustment, the time for the welding gun to swing from the leftmost side to the rightmost side remains unchanged.

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