An automatic welding platform for a new energy transformer corrugated oil tank

Abstract

The application discloses a kind of automatic welding platform of new energy transformer corrugated oil tank, including mouth-shaped architecture, bearing plate, lifting drive mechanism, mounting seat, multiple telescopic mechanisms and laser welding mechanism.Bearing plate separates the upper space and the lower space in mouth-shaped architecture, and the left and right inner walls of upper space are gradually narrowed from top to bottom in the form of slope;Multiple strip openings corresponding to the outer convex corrugated part of the workpiece to be processed are formed on the bearing plate, and rollers connected by elastic return members are arranged on both sides of the strip openings.When the workpiece to be processed moves downward, it is gradually tightened as a whole under the action of the slope inner wall, the outer convex corrugated part passes through the strip opening and is elastically pressed and guided by the rollers.After the telescopic mechanism extends into the corresponding outer convex corrugated part, the mounting seat is further lowered to drive the workpiece to move downward.The application can realize automatic seam closing before welding, stable guidance and multi-point synchronous downward pulling of corrugated oil tank, and improve the consistency of weld joint and welding quality.

Description

Technical Field

[0001] This invention relates to the field of transformer tank welding equipment technology, specifically to an automated welding platform for a new energy transformer corrugated tank. Background Technology

[0002] Corrugated oil tanks for new energy transformers typically use corrugated plates as components of the tank body to meet the requirements of volume compensation, heat dissipation, and structural layout. These corrugated plates are generally obtained through pressing and molding, with multiple outwardly convex corrugated sections formed along their length, and weld seams formed between adjacent sections. During subsequent assembly, these components need to be positioned, tightened, and welded to form a corrugated oil tank structure that meets sealing requirements.

[0003] In the existing corrugated fuel tank welding process, the workpiece to be processed has multiple convex corrugated parts and an overall corrugated and undulating shape. The following issues are prone to occur during placement, positioning, and pre-welding treatment: First, the overall width of the workpiece is large, while the actual spacing between the various parts to be welded varies, making it difficult to achieve a good fit in one go before welding; second, if only external pressure is applied to the workpiece, localized high and low stresses can occur, leading to inconsistent weld seam convergence; third, if there is a lack of a guiding structure adapted to the shape of the corrugated parts during pressing, guiding, or moving, frictional resistance, localized displacement, and unstable posture can easily occur; fourth, if only single-point or few-point traction is used to move the workpiece, uneven downward movement of the entire workpiece can easily occur, affecting subsequent weld seam fit and welding quality.

[0004] For workpieces with multiple convex corrugated sections, such as the corrugated oil tank of new energy transformers, a welding platform is needed that can take into account overall tightening, local guidance, uniform pulling down, and welding implementation. This platform can gradually complete the tightening and stable positioning of each weld seam before the workpiece enters the welding position, so that the subsequent laser welding mechanism can perform welding. Summary of the Invention

[0005] The purpose of this invention is to provide an automated welding platform for corrugated oil tanks of new energy transformers, which solves the problems of difficulty in closing the seam, unstable guidance, uneven downward movement, and poor weld fit consistency of corrugated workpieces before welding.

[0006] The above-mentioned technical objective of this invention is achieved through the following technical solution: an automated welding platform for a corrugated oil tank of a new energy transformer, comprising:

[0007] A square-shaped structure; A support plate is disposed inside the U-shaped structure and divides the interior of the U-shaped structure into an upper space and a lower space. The inner walls on the left and right sides of the upper space are sloping and gradually narrow from top to bottom, so that the workpiece to be processed placed therein is subjected to a gradually enhanced lateral tightening effect when it moves downward. The support plate has multiple strip-shaped openings, each corresponding to a different convex corrugated portion of the workpiece to be processed. Each strip-shaped opening has an elastic reset member and a roller connected to both symmetrical sides of its inner wall. The roller is connected to the inner wall of the strip-shaped opening through the elastic reset member, so as to maintain rolling contact with the surface of the convex corrugated portion when it passes through the strip-shaped opening, and to apply elastic pressure to the convex corrugated portion toward the center of the strip-shaped opening under the action of the elastic reset member. A lifting drive mechanism is disposed within the lower space; The mounting base is connected to the power output end of the lifting drive mechanism and moves up and down within the lower space; Multiple telescopic mechanisms are disposed on the mounting base and correspond one-to-one with multiple protruding corrugated parts of the workpiece to be processed. The telescopic movable end of each telescopic mechanism can extend into the interior of the corresponding protruding corrugated part and form a support cooperation with the corresponding protruding corrugated part so as to drive the workpiece to be processed to move downward when the mounting base moves down. A laser welding mechanism is positioned above the U-shaped structure and is used to weld the weld seam of the workpiece to be processed.

[0008] Furthermore, the elastic reset element is a nickel-titanium shape memory spring.

[0009] Furthermore, the roller is made of a high-temperature resistant material.

[0010] Furthermore, the telescopic mechanisms are symmetrically arranged along the front and rear sides of the mounting base, and the telescopic movable ends of each telescopic mechanism can extend into the interior of the workpiece from the corrugated end openings on the front and rear sides of the workpiece along the extension direction of the corresponding corrugated portion.

[0011] Furthermore, the lifting drive mechanism is provided with at least two sets symmetrically arranged front and rear, which synchronously drive the mounting base to maintain horizontal lifting.

[0012] Furthermore, two sets of lifting drive mechanisms are provided on the front inner wall of the lower space, and two sets of lifting drive mechanisms are provided on the rear inner wall of the lower space; the two sets of lifting drive mechanisms on the same side are respectively arranged close to the left and right ends of the mounting base.

[0013] Furthermore, the laser welding mechanism is equipped with an XYZ three-axis drive assembly, which can move along the X-axis, Y-axis and Z-axis directions.

[0014] Furthermore, friction-reducing components are provided on the inner walls of the left and right sides of the upper space.

[0015] Furthermore, the friction-reducing component is at least one of a universal ball bearing or a high-temperature resistant, low-friction slide rail.

[0016] Furthermore, the roller elastically yields along the width direction of the strip opening when the convex corrugated portion passes through the strip opening.

[0017] Furthermore, the mounting base is configured to first rise to a height corresponding to the end of the convex corrugated portion under the drive of the lifting drive mechanism, and then move downward under the drive of the lifting drive mechanism after the telescopic mechanism extends into the corresponding convex corrugated portion.

[0018] The beneficial effects of this invention are as follows: By setting a support plate inside the U-shaped structure and dividing the internal space into upper and lower spaces, the workpiece introduction, overall tightening, internal support pull-down, and welding can be completed on the same platform, which helps to reduce positioning errors caused by the transfer of workpieces between different workstations.

[0019] By designing the inner walls of the upper space on both sides as a sloping structure that gradually narrows from top to bottom, the workpiece to be processed can be gradually subjected to lateral tightening during its downward movement, thereby causing the welds to gradually come together as they descend. This method does not achieve one-time pressing through a single external pressure point, but rather gradually achieves overall tightening as the workpiece continues to move downward, which is beneficial for the welds at each location to approach a more uniform closed state.

[0020] By setting multiple strip openings on the support plate that correspond one-to-one with the convex corrugated parts, the multiple convex corrugated parts of the workpiece to be processed can pass through the corresponding positions during the downward movement, thus providing a mating basis for subsequent corrugated part guidance and elastic pressing. The correspondence between the multiple strip openings and the multiple convex corrugated parts helps to ensure the posture stability of the workpiece during the overall downward movement.

[0021] By symmetrically placing rollers connected by elastic reset elements on both sides of the inner wall of each strip opening, the rollers can maintain rolling contact with the surface of the corrugated part as it passes through the strip opening, and elastic pressure is applied towards the center under the action of the elastic reset elements. Rolling contact reduces the frictional resistance between the corrugated part and the guide structure, lowering the possibility of surface scratches and jamming; elastic pressure ensures that the corrugated parts at different positions maintain a relatively stable guiding state during downward movement, which is beneficial for improving the consistency of movement when the workpiece is tightened as a whole.

[0022] By setting the elastic reset element as a nickel-titanium shape memory spring, the roller can have better elastic clearance and reset capabilities during the insertion of the corrugated section, thus adapting to local dimensional and positional changes as the corrugated section passes through. This design helps to maintain continuous pressure between the roller and the corrugated section, while avoiding insufficient reset capability in the guide position due to repeated pressure.

[0023] By making the rollers from high-temperature resistant materials, the rollers can maintain good structural stability when working near the welding area, reducing the impact of heat deformation on guiding and pressing effects. For rollers near the welding station, the use of high-temperature resistant materials helps to adapt to the welding heat radiation environment.

[0024] By incorporating a lifting drive mechanism, a mounting base, and multiple telescopic mechanisms within the lower space, a support fit can be formed within the multiple protruding corrugated sections of the workpiece after its initial insertion. The workpiece then continues to move downwards via the downward movement of the mounting base. This internal support and downward pulling method distributes the downward movement of the workpiece across multiple corrugated sections, eliminating reliance on a single point of external force and improving the stability and uniformity of the overall downward movement of the workpiece.

[0025] By aligning multiple telescopic mechanisms with multiple protruding corrugated sections one-to-one and symmetrically arranging them along the front and rear sides of the mounting base, the multiple corrugated sections of the workpiece to be processed can be supported on both the front and rear sides. This arrangement helps reduce local skewing during the pull-down process, allowing the workpiece to maintain a relatively stable posture as it further enters the narrower upper space.

[0026] By having at least two sets of lifting drive mechanisms symmetrically arranged front and rear, and synchronously driving the mounting base to maintain horizontal lifting, the force on the mounting base can be made more even during the lifting process. Furthermore, by setting two sets of lifting drive mechanisms on the front and rear sides and arranging them close to the left and right ends of the mounting base, it is beneficial to improve the stability of the mounting base during lifting and reduce tilting and swaying caused by insufficient local support.

[0027] By positioning the laser welding mechanism above the U-shaped structure and using the XYZ three-axis drive assembly, welding operations can be performed on each weld seam at its corresponding position after the workpiece has been tightened and positioned. Adjustment of movement in the XYZ directions can accommodate welding requirements at different weld seam positions.

[0028] By installing friction-reducing components on the inner walls of the left and right sides of the upper space, frictional resistance can be reduced when the workpiece moves downward and contacts the inner wall of the slope, which helps the workpiece move more smoothly during the gradual tightening process. By using at least one of universal ball bearings or high-temperature resistant low-friction slide rails as friction-reducing components, the appropriate structural form can be selected according to the actual working conditions.

[0029] By allowing the roller to elastically move along the width of the strip opening as it passes through the corrugated section, the roller can automatically avoid the corrugated section when it enters. After the corrugated section is in place, the roller can return to the pressing state with the help of the elastic reset component, thus balancing both passage and pressing performance.

[0030] By first raising the mounting base to a height corresponding to the end of the protruding corrugated portion, then extending the telescopic mechanism into the corresponding corrugated portion before moving downwards, the workpiece to be processed can be internally supported before further downward pulling. This avoids the telescopic mechanism moving blindly if it is not aligned with the corresponding corrugated portion, thus improving the stability of the coordinated action.

[0031] In summary, the overall structure is gradually tightened through the gradually narrowing ramp structure in the upper space. The corrugated parts are guided and elastically pressed together through the strip opening, elastic reset parts, and rollers. The workpiece is supported and pulled down from the inside through the lifting drive mechanism, mounting base, and multiple telescopic mechanisms. Combined with the laser welding mechanism, the workpiece to be processed in the corrugated oil tank of the new energy transformer has a good weld fit before welding, which helps to improve the stability of the welding process and the weld quality. Attached Figure Description

[0032] Figure 1 This is a schematic cross-sectional view of the overall structure of an automated welding platform for a new energy transformer corrugated oil tank according to the present invention. Figure 2 for Figure 1 A magnified view of a portion of point A in the middle; Figure 3 This is a schematic cross-sectional view of the overall structure of the workpiece to be processed in this invention after it has been placed in and extended through the telescopic mechanism. Figure 4 for Figure 3 A magnified view of a portion of point B in the middle; Figure 5 This is a three-dimensional structural diagram of the U-shaped frame and the supporting plate in this invention; Figure 6 This is a three-dimensional structural diagram of the U-shaped frame, the support plate, the mounting base, and the telescopic mechanism in this invention; Figure 7 This is a schematic diagram of the arrangement of the inner roller with the strip opening and the nickel-titanium shape memory spring in this invention.

[0033] In the diagram: 1. U-shaped structure; 2. Support plate; 3. Upper space; 4. Lower space; 5. Lifting drive mechanism; 6. Mounting base; 7. Telescopic mechanism; 8. Laser welding mechanism; 100. Workpiece to be processed; 201. Strip opening; 202. Nickel-titanium shape memory spring; 203. Roller. Detailed Implementation

[0034] The following is combined Figures 1 to 7 The technical solution of the present invention will be further described below.

[0035] This embodiment provides an automated welding platform for a corrugated oil tank of a new energy transformer, including a U-shaped structure 1, a support plate 2, a lifting drive mechanism 5, a mounting base 6, multiple telescopic mechanisms 7, and a laser welding mechanism 8. The U-shaped structure 1 constitutes the main support frame of the automated welding platform. The support plate 2 is horizontally arranged inside the U-shaped structure 1, dividing the interior of the U-shaped structure 1 into an upper space 3 and a lower space 4. The workpiece 100 to be processed is a pressed corrugated plate with multiple outwardly protruding corrugated parts formed on its surface along its length, and weld seams to be welded are formed between adjacent structures. This automated welding platform is used for guiding, tightening, clamping and guiding, internally supporting and pulling down the workpiece 100 to be processed, and welding.

[0036] The upper space 3 is used to accommodate and guide the workpiece 100 to be processed. The inner walls on both sides of the upper space 3 are sloping and gradually narrow from top to bottom, forming a tapered structure in the height direction. After the workpiece 100 is placed into the upper space 3 from top to bottom, its outer edges on both sides make contact with the inner walls on both sides of the upper space 3 under its own weight and subsequent downward pull. As the workpiece 100 continues to move downward, the lateral width of the upper space 3 gradually decreases in the lower region, and the workpiece 100 as a whole is subjected to a gradually increasing lateral tightening effect, causing the welds distributed on it to gradually move closer together as the workpiece moves downward. Friction-reducing components are provided on the inner walls on both sides of the upper space 3. The friction-reducing components can be at least one of universal ball bearings or high-temperature resistant low-friction slide rails. The friction-reducing components are distributed on the surface of the sloping inner wall to reduce the frictional resistance between the edges of the workpiece 100 and the inner wall when moving downward, reduce jamming, and reduce the possibility of friction damage to the workpiece surface. With the cooperation of the aforementioned tapered inner wall and friction-reducing components, the workpiece 100 to be processed can gradually tighten and maintain a relatively stable downward movement during the downward introduction and continued downward movement.

[0037] Multiple strip-shaped openings 201 are provided on the support plate 2, and each strip-shaped opening 201 corresponds one-to-one with a number of outwardly protruding corrugated parts of the workpiece 100 to be processed in terms of quantity and position. After the workpiece 100 to be processed enters the upper space 3 downwards, each outwardly protruding corrugated part sequentially passes into the corresponding strip-shaped opening 201. Each strip-shaped opening 201 has an elastic reset component and a roller 203 connected to both symmetrical sides of its inner wall. The elastic reset component is a nickel-titanium shape memory spring 202, and the roller 203 is made of a high-temperature resistant material. The roller 203 is connected to the inner wall of the strip-shaped opening 201 through the nickel-titanium shape memory spring 202, allowing the roller 203 to elastically yield relative to the width direction of the strip-shaped opening 201, and to be pushed back towards the center of the strip-shaped opening 201 under the restoring action of the nickel-titanium shape memory spring 202.

[0038] When the corrugated portion of the workpiece 100 passes through the corresponding strip opening 201 from top to bottom, it first contacts the rollers 203 located on both sides of the strip opening 201. Under the pressure of the corrugated portion, the rollers 203 elastically yield outward along the width direction of the strip opening 201, allowing the corrugated portion to smoothly enter the strip opening 201. Simultaneously, the nickel-titanium shape memory spring 202 undergoes elastic deformation after being compressed and, under the effect of its recovery tendency, applies elastic pressure to the corrugated portion towards the middle of the width of the strip opening 201. Because the rollers 203 and the surface of the corrugated portion are in rolling contact, during the continuous downward movement of the workpiece 100, the rollers 203 can provide rolling guidance and elastic pressure to the corrugated portion, ensuring the stability of the workpiece 100's posture during the overall tightening and downward movement. The rollers 203 are made of high-temperature resistant material, maintaining good structural stability when working near the welding area to adapt to the welding heat radiation environment.

[0039] In this embodiment, the nickel-titanium shape memory spring 202, in addition to providing basic elastic clearance and basic pressure for the roller 203 during the introduction of the workpiece 100, also undertakes the thermal response function that changes with the movement of the weld point during the welding process. When the laser welding mechanism 8 moves along the weld seam to perform welding, a heat-affected zone is formed in the area near the weld point, moving along the welding path. After being subjected to welding heat, the nickel-titanium shape memory spring 202 located in or near this heat-affected zone exhibits enhanced recovery tendency, thereby enhancing the pressure exerted by the corresponding roller 203 on the corresponding convex corrugated portion. Since the laser welding mechanism 8 moves continuously along the weld seam, the nickel-titanium shape memory springs 202 at different positions do not simultaneously enter the above-mentioned thermal response state, but are heated sequentially along the weld seam direction and sequentially generate enhanced recovery effects, thereby forming a locally enhanced pressure area that migrates along the weld seam. This locally enhanced pressure area corresponds to the weld point position, and during the welding process, it can continuously apply additional pressure to the welded part in the area near the weld point, so that the weld position near the weld point still maintains a good fit even when welding heat input is present. In other words, at room temperature, the nickel-titanium shape memory spring 202 provides basic pressing force, while during welding, the nickel-titanium shape memory spring 202 near the weld point provides a relatively enhanced pressing force after being heated. This enhanced state does not simultaneously cover the entire strip opening 201, but gradually migrates along the weld direction as the weld point moves. By adopting this method, the additional pressing force can be mainly concentrated in the adjacent areas before and after the weld point, thereby reducing unnecessary excessive pressing in areas far from the weld point.

[0040] The lower space 4 is equipped with at least two sets of symmetrically arranged lifting drive mechanisms 5. In this embodiment, two sets of lifting drive mechanisms 5 are arranged on the front inner wall of the lower space 4, and two sets of lifting drive mechanisms 5 are arranged on the rear inner wall of the lower space 4. The two sets of lifting drive mechanisms 5 on the same side are arranged close to the left and right ends of the mounting base 6, respectively. The mounting base 6 is horizontally connected to the power output ends of the four sets of lifting drive mechanisms 5. The four sets of lifting drive mechanisms 5 operate synchronously, driving the mounting base 6 to move up and down within the lower space 4 to maintain the stability of the mounting base 6 during the lifting process. By adopting a symmetrical front-to-back and laterally distributed lifting arrangement, the mounting base 6 can be subjected to more even force during the lifting process, reducing tilting caused by unilateral force or single-point drive.

[0041] Multiple telescopic mechanisms 7 are mounted on the mounting base 6, symmetrically distributed along the front and rear sides of the mounting base 6, and corresponding one-to-one with multiple protruding corrugated portions of the workpiece 100 to be processed. The telescopic movable end of the telescopic mechanism 7 can be rod-shaped, column-shaped, or other structures suitable for extending into the internal cavity of the corrugated portion, and its outer surface can form a supporting fit with the inner wall of the protruding corrugated portion of the workpiece 100 to be processed. During the welding preparation process, the workpiece 100 to be processed is first placed into the upper space 3 from above, and each of its protruding corrugated portions passes through the corresponding strip opening 201. During this process, the rollers 203 guide and elastically press against each protruding corrugated portion, and the workpiece 100 to be processed has already undergone preliminary tightening under the action of the gradually narrowing inner wall of the upper space 3. Subsequently, the mounting base 6 moves upward under the drive of the lifting drive mechanism 5, reaching a height corresponding to the end opening of the protruding corrugated portion of the workpiece 100 to be processed. After the height is aligned, each telescopic mechanism 7 is activated, and its telescopic movable end extends horizontally into the internal cavity of the corrugated part from the openings at the corrugated ends on both the front and rear sides of the workpiece 100, along the extension direction of the corresponding corrugated part. After extension, the movable end of each telescopic mechanism 7 forms a supporting fit with the inner wall of the corresponding corrugated part.

[0042] After all telescopic mechanisms 7 have extended, the mounting base 6 moves downward under the synchronous drive of the lifting drive mechanism 5. Since the movable ends of each telescopic mechanism 7 form a supporting fit with the protruding corrugated portions of the workpiece 100 to be processed from the inside, the downward movement of the mounting base 6 will cause the workpiece 100 to be processed to move downward as a whole. This downward movement is not caused by a single position pulling the workpiece 100, but rather by multiple telescopic mechanisms 7, each corresponding to a protruding corrugated portion, acting simultaneously on multiple corrugated portions, distributing the downward force to each corrugated portion position, thus allowing the workpiece 100 to be processed to enter the narrower area of ​​the upper space 3 more smoothly. As the workpiece 100 further moves downward into the narrower area of ​​the upper space 3, its overall lateral tightening degree further increases, and the welds continue to close and tend to fit together. At the same time, the rollers 203 on both sides of the strip opening 201 continuously roll and elastically press against each protruding corrugated portion, preventing the workpiece 100 from locally swaying, deviating, or individual corrugated portions from becoming unstable during the downward movement.

[0043] After the workpiece 100 has completed the above-mentioned introduction, initial tightening, internal support, and further pull-down, the gaps and misalignments of each weld are controlled within a suitable range for welding. The laser welding mechanism 8 is positioned above the U-shaped structure 1 and is equipped with an XYZ three-axis drive assembly, enabling it to move along the X, Y, and Z axes to spatially position and adjust the welding trajectory for different weld locations. During welding, the laser welding mechanism 8 first moves to the weld start position and performs continuous welding along the corresponding weld direction. As the welding mechanism moves, the heat-affected zone near the weld point moves synchronously along the weld direction. The nickel-titanium shape memory springs 202 located within this moving heat-affected zone are sequentially heated and enter a recovery enhancement state, causing the corresponding rollers 203 to apply enhanced pressure to the convex corrugated portion near the weld point. Thus, during the movement of the laser welding mechanism 8 along the weld, there is always a local enhanced pressure area corresponding to the weld point near the area to be welded, providing continuous pressure fit for the workpiece parts in front of, at, and a short distance behind the weld point. In this embodiment, the nickel-titanium shape memory springs 202 do not simultaneously enter the recovery and reinforcement state along the entire weld seam. Instead, as the weld point of the laser welding mechanism 8 moves along the weld seam, the nickel-titanium shape memory springs 202 at different positions are heated sequentially and generate recovery and reinforcement effects sequentially, thereby causing the locally reinforced pressing area to migrate synchronously with the weld point along the weld seam direction. Compared with all the nickel-titanium shape memory springs 202 being heated and entering the reinforced pressing state simultaneously, this method concentrates the reinforcing pressing effect mainly in the area near the weld point, rather than applying it simultaneously to the corresponding area of ​​the entire weld seam. In this way, the part to be welded in front of the weld point can continue to remain closed and fitted before welding is reached, the area where the weld point is located can remain relatively stable during the heating and fusion process, and the welded part within a short distance behind the weld point can continue to receive support in the initial stage after welding. Since the positions far from the weld point do not simultaneously enter the reinforced pressing state, there is no additional constraint on the entire workpiece 100 to be processed synchronously, which helps to reduce the situation of limited thermal elongation, local stress accumulation, and post-weld springback, bulging, or amplified local deformation caused by excessive overall pressing.

[0044] Meanwhile, the workpiece 100 to be processed has a corrugated thin-walled structure, and there may be local gap differences, corrugation size errors, and posture fluctuations along the weld direction. By adopting a phase-change method that moves sequentially with the weld point, the local reinforcing pressure only works within a small area near the weld point, making the fit compensation in that area more timely; that is, wherever the weld point moves, the reinforcing pressure follows, thus providing real-time compensation for local opening, misalignment, or instability near the molten pool that is prone to occur after heating. Compared to the method of synchronous reinforcing pressure across the entire row, this method does not apply unnecessary additional pressure to non-critical welding areas, and the errors in local position are mainly absorbed within the local area, making it less likely to be transmitted and accumulated along the entire weld.

[0045] Furthermore, the width and dwell time of the heat-affected zone near the weld point vary depending on the welding speed and heat input conditions of the laser welding mechanism 8. The heating response of the nickel-titanium shape memory spring 202 originates directly from the heat in the vicinity of the weld point; therefore, the range and duration of the locally reinforced pressing area also vary with the actual thermal state of the welding process. At higher welding speeds, the locally reinforced pressing area migrates faster along the weld direction; at lower welding speeds, the duration of the locally reinforced pressing area at the corresponding position is relatively longer. In this way, the timing and position of the reinforcing pressing action can correspond to the actual working state of the moving weld point, thus making the pressing action during the welding process more closely match the working characteristics of the moving molten pool.

[0046] Based on the above-mentioned mechanism, in this embodiment, the localized reinforcing pressure area formed by the nickel-titanium shape memory spring 202 after heating does not apply uniform reinforcing pressure to the entire weld at the same time. Instead, it forms a bonding and holding effect in front of the weld point, a welding stabilizing effect at the weld point, and a short-term shaping effect behind the weld point. This forms a continuous process of front bonding, middle stabilizing and melting, and rear shaping along the welding direction, so that the reinforcing pressure effect matches the welding position.

[0047] In practical use, the workpiece 100 to be processed can be hoisted or manually placed above the U-shaped structure 1 and guided downwards along the opening direction of the upper space 3. As the workpiece 100 continues to move downwards, its convex corrugated portion passes through the strip opening 201 and enters the corresponding position. At the same time, it completes initial guidance and elastic pressing under the action of the roller 203 and the nickel-titanium shape memory spring 202. After the workpiece descends to the predetermined height, the mounting base 6 rises, and each telescopic mechanism 7 extends into the corrugated end openings on the front and rear sides of the workpiece 100, forming a support fit with the inner wall of each corrugated portion. Then, the mounting base 6 moves downwards under the drive of the lifting mechanism 5, allowing the workpiece 100 to further enter the narrower area of ​​the upper space 3 to achieve further tightening and weld seam fitting. Afterwards, the laser welding mechanism 8 performs welding along the predetermined weld seam trajectory, and during the movement of the weld point, it cooperates with the nickel-titanium shape memory spring 202 to form a local enhanced pressing area that moves with the weld point after being heated, maintaining additional pressing on the area adjacent to the weld point. After all welds are completed, the laser welding mechanism 8 is reset, the mounting base 6 is raised or reset, the telescopic mechanism 7 is withdrawn from the corrugated part, and finally the welded workpiece is moved out of the platform.

[0048] In this embodiment, the friction-reducing component can be selected as a universal ball bearing, a high-temperature resistant low-friction slide rail, or a combination of both, depending on the specific working conditions; the telescopic mechanism 7 can be selected with appropriate rod diameter and extension length according to the size of the corrugated part; the lifting drive mechanism 5 can be an electric cylinder, hydraulic cylinder, pneumatic cylinder, or other actuator capable of synchronous lifting drive; the XYZ three-axis drive assembly can be implemented using linear guide rails in conjunction with lead screws, racks, or servo modules. The specific forms described above can be adjusted according to the size, weight, and welding conditions of the workpiece 100 to be processed, but their working methods are all based on the overall technical concept of gradually narrowing and tightening the upper space 3, rolling guide pressing at the strip opening 201, multi-point internal support pulling down at the lower part, and local reinforcement pressing cooperation during the welding stage to achieve automated welding of the workpiece 100 to be processed.

[0049] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An automated welding platform for a corrugated oil tank of a new energy transformer, characterized in that, include: The square-shaped structure (1); The support plate (2) is set inside the U-shaped structure (1) and divides the interior of the U-shaped structure (1) into an upper space (3) and a lower space (4). The inner walls of the left and right sides of the upper space (3) are sloping and gradually narrow from top to bottom. The support plate (2) has multiple strip openings (201), and each of the multiple strip openings (201) corresponds to a multiple outwardly protruding corrugated part of the workpiece (100) to be processed. Each of the inner walls of the strip openings (201) is connected to an elastic reset member and a roller (203). The roller (203) is connected to the inner wall of the strip opening (201) through the elastic reset member. A lifting drive mechanism (5) is disposed in the lower space (4); Mounting base (6) is connected to the power output end of the lifting drive mechanism (5) and moves up and down in the lower space (4); Multiple telescopic mechanisms (7) are provided on the mounting base (6) and correspond one-to-one with multiple convex corrugated parts of the workpiece (100) to be processed. The telescopic movable end of each telescopic mechanism (7) can extend into the corresponding convex corrugated part and form a support cooperation with the corresponding convex corrugated part. The laser welding mechanism (8) is located above the U-shaped structure (1).

2. The automated welding platform for a new energy transformer corrugated oil tank according to claim 1, characterized in that: The elastic reset component is a nickel-titanium shape memory spring (202).

3. The automated welding platform for a new energy transformer corrugated oil tank according to claim 1, characterized in that: The telescopic mechanism (7) is symmetrically arranged on the front and rear sides of the mounting base (6), and the telescopic movable end of each telescopic mechanism (7) can extend into the interior of the workpiece (100) from the corrugated end opening on the front and rear sides along the extension direction of the corresponding corrugated part.

4. The automated welding platform for a new energy transformer corrugated oil tank according to claim 1, characterized in that: The lifting drive mechanism (5) is provided with at least two sets of symmetrical front and rear, and synchronously drives the mounting base (6) to maintain horizontal lifting.

5. The automated welding platform for a new energy transformer corrugated oil tank according to claim 4, characterized in that: The lower space (4) has two sets of lifting drive mechanisms (5) on the front inner wall and two sets of lifting drive mechanisms (5) on the rear inner wall; the two sets of lifting drive mechanisms (5) on the same side are arranged close to the left and right ends of the mounting base (6).

6. The automated welding platform for a new energy transformer corrugated oil tank according to claim 1, characterized in that: The laser welding mechanism (8) is equipped with an XYZ three-axis drive assembly, which can move along the X-axis, Y-axis and Z-axis directions.

7. The automated welding platform for a new energy transformer corrugated oil tank according to claim 1, characterized in that: Friction-reducing components are provided on the inner walls of the left and right sides of the upper space (3).

8. The automated welding platform for a new energy transformer corrugated oil tank according to claim 7, characterized in that: The friction-reducing component is at least one of universal ball bearings or high-temperature resistant, low-friction slide rails.

9. The automated welding platform for a new energy transformer corrugated oil tank according to claim 1, characterized in that: The roller (203) elastically yields along the width direction of the strip opening (201) when the convex corrugated part passes through the strip opening (201).

10. The automated welding platform for a new energy transformer corrugated oil tank according to claim 1, characterized in that: The mounting base (6) is configured to first rise to the height corresponding to the end of the convex corrugated part under the drive of the lifting drive mechanism (5), and then move downward under the drive of the lifting drive mechanism (5) after the telescopic mechanism (7) extends into the corresponding convex corrugated part.

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