An electric power iron accessory aligning and welding device

Abstract

The present application relates to the technical fields of electric power iron accessory welding, in particular to a kind of electric power iron accessory alignment welding device, including cabinet, workbench fixedly installed on the upper end of cabinet, carousel is rotatably installed on workbench by rotating assembly, still including fixedly installed in the inner support seat of the upper end center of carousel, the inner support component of being arranged on inner support seat, two positioning seats of being slidably arranged on the upper end both sides of carousel, adjusting assembly being arranged in the inside of carousel, lifting frame fixedly installed on the upper end side of carousel;The present application is supported by the inner support roller of inner support component and meets the outer limiting roller of outer limiting component from the outside clamping, forms the constraint fixation of inside and outside cooperation, realizes the clamping fixation of vertical direction, avoids the elastic or plastic deformation of arc thin-walled part in clamping stage, guarantees the roundness and size precision of workpiece, while cooperating with the limiting of the two ends of hoop by two side positioning seats, forms three-point support, so that hoop is automatically concentrated on carousel, guarantees the accuracy of alignment.

Description

Technical Field

[0001] This invention relates to the field of welding technology for electric railway accessories, specifically to a device for aligning and welding electric railway accessories. Background Technology

[0002] Electric power iron fittings are indispensable connecting and supporting components in the structure of transmission line towers and poles. They come in many varieties, including C-type clamps, U-type clamps, and crossarm connecting plates, and are widely used in scenarios such as conductor fixing, insulator suspension, and tower assembly. In the manufacturing process of electric power iron fittings, the components are usually formed as a whole by stamping or forging, and then assembled into finished components by welding. Taking a conventional C-type clamp as an example, the connecting wing plate needs to be precisely welded to the outer wall of the clamp body, and the reinforcing plate needs to be butt-welded to both ends of the clamp. The butt-welding accuracy of the connecting wing plate directly determines the symmetry and stress uniformity of the two paired iron fittings after assembly, while the end butt-welding quality of the reinforcing plate affects the bending load-bearing capacity of the overall structure. Therefore, stringent requirements are placed on the positioning accuracy, clamping stability, and operational accessibility of the welding fixture.

[0003] For example, Chinese patent (CN118768840B) discloses a welding and docking device for electric iron accessories. It achieves pre-fixation of the main body of the electric iron accessory by inserting a fixing pin into the screw hole of the connecting block and pressing the upper and lower inner walls of the screw hole with the pre-fixing component. At the same time, a telescopic fixing pin structure is designed. When the thickness of the connecting block is less than the length of the fixing pin, the fixing pin can be pushed back to avoid interference when the clamp moves to dock the reinforcing rib. Conventional docking welding devices often use a horizontal positioning method when fixing electric iron accessories. The workpiece lies flat on the base, and the clamping force direction is perpendicular to the gravity direction. The bottom of the thin-walled arc-shaped part lacks effective support, and the clamping bending moment is borne entirely by the arc surface. It is very easy to cause elastic or plastic deformation during the clamping stage. In addition, the weld between the wing plate and the outer wall of the clamp is in the vertical or overhead welding position in the horizontal posture. The circumferential weld at the end of the reinforcing plate requires the welding torch to make a complex spatial curve movement around the workpiece, which makes the welding posture difficult and the movement path of the welding torch very complex. This not only affects the welding efficiency, but also increases the difficulty of equipment operation and programming complexity. Existing welding fixtures for electric railway accessories are prone to deformation of thin-walled workpieces such as C-type clamps when using conventional clamping and fixing methods, which affects welding accuracy. At the same time, the poor posture of circumferential welding leads to low welding efficiency. Based on this, we propose an alignment welding device for electric railway accessories to solve the above problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a power iron accessory alignment and welding device. Through internal and external clamping and limiting, it achieves vertical alignment and fixation of power iron accessories, facilitating welding operations. This solves the problem that conventional clamping and fixing methods for existing power iron accessory welding fixtures easily cause deformation of thin-walled workpieces such as C-shaped clamps, affecting welding accuracy. At the same time, the poor posture of circumferential welding leads to low welding efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a welding device for aligning electric iron accessories, comprising a chassis, a workbench fixedly installed on the upper end of the chassis, a turntable rotatably installed on the workbench via a rotating component, and further comprising an inner support fixedly installed at the center of the upper end of the turntable, an inner support component disposed on the inner support, two positioning seats slidably disposed on both sides of the upper end of the turntable, an adjustment component disposed inside the turntable, and a lifting frame fixedly installed on the upper side of the turntable. The positioning seats are used to abut the ends of the clamping parts, the output ends of the adjustment component are respectively connected to the two positioning seats, and the adjustment component is used to synchronously adjust the distance between the two positioning seats. The lifting frame is provided with a lifting component, the output end of the lifting component is connected to the docking component, and is used to drive the docking component to move up and down. The inner support assembly includes inner support arms symmetrically arranged on both sides of the inner support base and telescopic cylinders that drive the inner support arms to expand or retract synchronously. An inner support roller is rotatably installed at the end of the inner support arm away from the inner support base. The inner support roller is used to abut against the inner wall of the clamp to fix the clamp in a vertical direction. The docking assembly includes an extension seat, a mounting seat fixedly installed at the end of the extension seat, and a gripper cylinder set on the mounting seat. The gripper cylinder is used to clamp the connecting wing plate. External limiting components are also provided on both sides of the mounting seat. The external limiting components cooperate with the internal support components to form internal and external clamping and limiting of the clamping member.

[0006] Furthermore, the rotating assembly includes a servo motor fixedly installed in the chassis and a rotating shaft fixedly installed at the lower end of the turntable. The lower end of the rotating shaft extends into the chassis and is fixedly connected to an external gear. The output end of the servo motor is fixedly connected to a meshing gear. The external gear and the meshing gear mesh together. When the servo motor drives the meshing gear to rotate, the rotating shaft drives the turntable to rotate through the transmission of the external gear.

[0007] Furthermore, an array of wheels is rotatably mounted on the lower edge of the turntable, and a ring-shaped slide rail is fixedly mounted on the upper end of the worktable. The wheel set consists of two symmetrically distributed guide wheels, which are respectively attached to the inner and outer walls of the ring-shaped slide rail to provide radial limit and axial support for the rotation of the turntable. The guide wheel surface is provided with a concave groove, which is adapted to the convex structure at the end of the ring-shaped slide rail to form a meshing limit and prevent the guide wheel from disengaging. At the same time, the bottom surface of the concave groove is an arc surface, which closely matches the arc contour of the convex structure. While ensuring the anti-disengagement limit, it reduces rolling friction resistance and avoids vibration caused by jamming when the turntable rotates at high speed, thus ensuring the stability of the circumferential welding process.

[0008] Furthermore, the adjustment assembly includes a mounting cavity inside the turntable, a double-ended lead screw rotatably mounted in the mounting cavity, movable blocks threaded onto both ends of the double-ended lead screw, and a drive motor fixedly mounted on the outer wall of the turntable. The output end of the drive motor is connected to one end of the double-ended lead screw, which drives the two movable blocks to move closer or further apart, thereby changing the position of the positioning seat and adapting to clamps of different sizes. The threads at both ends of the double-ended lead screw have opposite directions and equal pitch, ensuring that the displacement of the movable blocks on both sides is strictly symmetrical, so that the central axis of the clamp is always coincident with the rotation axis of the turntable, avoiding rotational vibration and welding trajectory deviation caused by eccentricity.

[0009] Furthermore, connecting grooves are provided on both sides of the upper surface of the turntable. A slider is slidably installed in the connecting groove. The lower end of the slider is fixedly connected to the moving block, and the upper end of the slider is fixedly connected to the bottom of the positioning seat. The positioning seat has an L-shaped structure. A clamping component is provided on the top of the positioning seat. The clamping component is used to clamp and fix the end of the clamp to the positioning seat from top to bottom. A soft protective cover (such as an accordion-style isolation cover) is provided in the connecting groove to form protection.

[0010] Furthermore, the clamping assembly includes a pressing rod installed on the top of the positioning seat and an electric push rod fixedly installed on the outer wall of the positioning seat. The middle part of the pressing rod is rotatably connected to the top of the positioning seat through a rotating shaft. One end of the pressing rod is provided with a clamping end, and the other end of the pressing rod is connected to the output end of the electric push rod through a hinge plate. The hinge plate has an arc-shaped structure to facilitate clearance with the side wall of the positioning seat and avoid movement interference. The electric push rod drives one end of the hinge plate to move up and down. Through the transmission of the hinge plate, it drives one end of the pressing rod to move synchronously. The rotational connection of the pressing rod forms a seesaw structure, which causes the clamping end to move down and abut against the end of the clamping member to form a clamping fixation.

[0011] It should be noted that a polyurethane buffer pad is embedded on the bottom surface of the clamping end. The hardness of the polyurethane buffer pad is Shore a70-a85, which ensures sufficient clamping force to prevent the workpiece from slipping, and avoids direct contact between hard metal and the thin-walled clamping end, which may cause indentation or local plastic deformation.

[0012] Furthermore, the inner support assembly also includes a lifting cylinder fixedly installed on the upper end of the inner support base and a support mechanism set at the output end of the lifting cylinder. The support mechanism includes a connecting plate fixedly installed on the output end of the lifting cylinder, a telescopic rod vertically installed on the upper end of the connecting plate, a U-shaped frame fixedly installed on the telescopic end of the telescopic rod, and a roller rotatably installed in the U-shaped frame. A compression spring is fitted on the outer side of the telescopic rod, and the upper and lower ends of the compression spring abut against the U-shaped frame and the connecting plate, respectively. The outer circumference of the roller is covered with a high-temperature resistant silicone layer with a thickness of 3-5mm. The high-temperature resistant silicone layer can maintain elasticity in the high-temperature welding environment, providing a flexible backing to avoid scratching the inner wall of the workpiece, and absorbing the slight displacement caused by the thermal expansion of welding. Combined with the buffering effect of the compression spring, it realizes dynamic follow-up support for the weld.

[0013] Furthermore, the lifting assembly includes a threaded rod rotatably mounted in the lifting frame, a servo motor II fixedly mounted on the top of the lifting frame, a lifting block threaded onto the threaded rod, and a lifting seat fixedly mounted on the surface of the lifting block. The bottom of the lifting seat and the extension seat are fixedly connected. The output end of the servo motor II is connected to the upper end of the threaded rod. The servo motor II is used to drive the threaded rod to rotate. When the threaded rod rotates, the lifting block drives the extension seat to move up or down.

[0014] Furthermore, the outer limiting assembly includes outer limiting arms hinged to both ends of the mounting base, a double-headed cylinder fixedly mounted on the top of the mounting base, and hinge plates hinged to the two output ends of the double-headed cylinder. An outer limiting roller is provided at the end of the outer limiting arm away from the mounting base, and the end of the hinge plate away from the double-headed cylinder is rotatably connected to the outer wall of the outer limiting arm. The double-headed cylinder is used to synchronously drive the two outer limiting arms to retract towards each other or unfold away from each other.

[0015] Furthermore, it also includes a welding module, which includes a welding gun and a three-axis drive assembly. The welding gun is mounted on the upper end of the worktable via the three-axis drive assembly, which is used to drive the welding gun to move along the X, Y and Z axes to perform welding operations on the connecting wing plates and reinforcing plates on the clamping component.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects: 1. This invention uses the inner support roller of the inner support component to abut against the inner wall of the clamp, and the outer limit roller of the outer limit component to clamp from the outside, forming a constraint fixation with internal and external coordination, forming a vertical clamping fixation, avoiding elastic or plastic deformation of the arc-shaped thin-walled part during the clamping stage, ensuring the roundness and dimensional accuracy of the workpiece. At the same time, with the positioning seats on both sides limiting the two ends of the clamp, a three-point support is formed, so that the clamp is automatically concentrated on the turntable, ensuring the accuracy of the alignment; 2. This invention uses a lifting component to drive the docking component to move vertically downward, so that the connecting wing plate held by the gripper cylinder can be accurately attached to the top outer wall of the clamp. At the same time, the vertical alignment linkage of multiple points forms a centering constraint, which facilitates the automatic centering and alignment of the wing plate and the clamp center, ensuring the symmetry and uniform force of the two paired iron accessories after assembly, and ensuring the welding assembly accuracy. 3. This invention can quickly adapt to clamps with different opening sizes and radii by adjusting the synchronous drive of the two positioning seats on both sides. The symmetrical distribution of the two positioning seats ensures that the center of the workpiece always coincides with the rotation axis of the turntable, which facilitates the alignment of accessories and clamps and improves convenience. 4. This invention drives the turntable to rotate at a constant speed through a rotating component, thereby causing the clamp to rotate and transforming the spatial circumferential seam at the end of the reinforcing plate into a planar circular trajectory. The welding torch only needs to maintain a fixed posture to complete the full circumference welding, avoiding complex spatial curve programming and multi-axis linkage, reducing the difficulty of equipment operation. At the same time, the meshing and limiting structure of the wheel set and the annular slide rail eliminates the radial movement and axial runout when the turntable rotates, ensuring the stability of the welding process and the quality of weld formation. 5. The present invention provides follow-up support for the weld joint through a support mechanism. The elasticity of the compressed spring allows multiple rollers to float and support, which facilitates stable support for the weld joint, ensures the stability of the weld joint, prevents burn-through defects caused by support detachment, and improves the strength of the weld. Attached Figure Description

[0017] Figure 1 The diagram shown is a schematic representation of the overall structure of the present invention. Figure 2 The diagram shown is a side view of the present invention. Figure 3 The diagram shown is a schematic representation of the workbench structure of this invention. Figure 4 The diagram shown is a schematic representation of the internal structure of the rotating component of the present invention. Figure 5 The diagram shown is a schematic representation of the turntable and positioning base structure of the present invention. Figure 6 This invention is shown. Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 The diagram shown is a schematic of the internal support component structure of the present invention; Figure 8 The diagram shown is a schematic representation of the external limiting component structure of the present invention. Figure 9 The diagram shown is a schematic of the lifting frame structure of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 1. Chassis; 2. Worktable; 3. Turntable; 301. Servo motor 1; 302. Rotating shaft; 303. External gear; 304. Meshing gear; 305. Wheel set; 306. Circular slide rail; 4. Inner support seat; 401. Lifting cylinder; 402. Inner support arm; 403. Inner support roller; 404. Telescopic cylinder; 4011. Connecting plate; 4012. Telescopic rod; 4013. U-shaped frame; 4014. Support roller; 4015. Compression spring 5. Positioning seat; 501. Mounting cavity; 502. Double-ended lead screw; 503. Moving block; 504. Drive motor; 505. Pressing rod; 506. Electric push rod; 6. Welding gun; 7. Extension seat; 8. Mounting seat; 801. Outer limit arm; 802. Double-ended cylinder; 803. Hinge plate; 804. Outer limit roller; 9. Gripper cylinder; 10. Lifting frame; 101. Threaded rod; 102. Servo motor II; 103. Lifting block; 104. Lifting seat. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 Please see Figures 1-9 This embodiment of a power iron accessory alignment welding device includes a housing 1, a workbench 2 fixedly installed on the upper end of the housing 1, a turntable 3 rotatably installed on the workbench 2 via a rotating component, and also includes an inner support seat 4 fixedly installed at the center of the upper end of the turntable 3, an inner support component disposed on the inner support seat 4, two positioning seats 5 slidably disposed on both sides of the upper end of the turntable 3, an adjustment component disposed inside the turntable 3, and a lifting frame 10 fixedly installed on the upper side of the turntable 3. The positioning seats 5 are used to abut the ends of the clamping parts, the output end of the adjustment component is connected to the two positioning seats 5 respectively, and the adjustment component is used to synchronously adjust the distance between the two positioning seats 5. The lifting frame 10 is provided with a lifting component, the output end of the lifting component is connected to the docking component, and is used to drive the docking component to move up and down. The inner support assembly includes inner support arms 402 symmetrically arranged on both sides of the inner support base 4 and telescopic cylinders 404 that drive the inner support arms 402 to expand or retract synchronously. An inner support roller 403 is rotatably installed at the end of the inner support arm 402 away from the inner support base 4. The inner support roller 403 is used to abut against the inner wall of the clamp to fix the clamp vertically. The docking assembly includes an extension seat 7, a mounting seat 8 fixedly installed at the end of the extension seat 7, and a gripper cylinder 9 set on the mounting seat 8. The gripper cylinder 9 is used to clamp the connecting wing plate. The mounting seat 8 is also provided with external limiting components on both sides. The external limiting components cooperate with the internal support components to form an internal and external clamping and limiting of the clamping member. It also includes a welding module, which includes a welding gun 6 and a three-axis drive assembly. The welding gun 6 is mounted on the upper end of the worktable 2 via the three-axis drive assembly. The three-axis drive assembly is used to drive the welding gun 6 to move along the X-axis, Y-axis and Z-axis directions to perform welding operations on the connecting wing plate and reinforcing plate on the clamp.

[0021] It should be noted that the outer circumference of the inner support roller 403 is covered with a high-temperature resistant silicone layer with a thickness of 3-5mm. This provides flexible contact to avoid scratching the inner wall of the clamping part and absorbs minor vibrations during the clamping process. In conjunction with the synchronous unfolding action of the inner support arm 402, the clamping force is evenly distributed along the arc length of the clamping part. At the same time, a vertical guide groove is provided inside the inner support base 4. The root of the inner support arm 402 is slidably embedded in the guide groove. The guide groove constrains the movement trajectory of the inner support arm 402, ensuring that the inner support roller 403 always moves along the radial direction of the clamping part, avoiding workpiece slippage or twisting due to tangential force generated by movement deviation.

[0022] Please see Figure 1 , Figure 4 and Figure 5 In this embodiment, the rotating assembly includes a servo motor 301 fixedly installed in the housing 1 and a rotating shaft 302 fixedly installed at the lower end of the turntable 3. The lower end of the rotating shaft 302 extends into the housing 1 and is fixedly connected to an external gear 303. The output end of the servo motor 301 is fixedly connected to a meshing gear 304. The external gear 303 and the meshing gear 304 are meshed together. When the servo motor 301 drives the meshing gear 304 to rotate, the external gear 303 drives the rotating shaft 302 to rotate the turntable 3. An array of wheel sets 305 is rotatably installed at the lower edge of the turntable 3. An annular slide rail 306 is fixedly installed at the upper end of the worktable 2. The wheel set 305 consists of two symmetrically distributed guide wheels. The two guide wheels are respectively attached to the inner and outer walls of the annular slide rail 306 to provide radial limit and axial support for the rotation of the turntable 3.

[0023] It should be noted that the guide wheel surface is provided with a concave groove, and the end of the annular slide rail 306 is provided with an outward protruding structure that matches the groove. The two form a meshing limit, which effectively prevents the guide wheel from disengaging from the slide rail when rotating at high speed or bearing welding reaction force. While ensuring the anti-disengagement limit, it also reduces rolling friction resistance and avoids vibration caused by jamming when the turntable 3 rotates. In addition, a tapered roller bearing is provided between the rotating shaft 302 and the housing 1. The tapered roller bearing can bear both radial and axial loads at the same time, offsetting the axial pressure generated by the weight of the turntable 3 and the workpiece, preventing axial movement of the rotating shaft 302 after long-term operation, and ensuring the rotational accuracy and long-term stability of the turntable 3.

[0024] Please see Figure 3 , Figure 4 and Figure 5 In this embodiment, the adjustment assembly includes a mounting cavity 501 inside the turntable 3, a double-ended lead screw 502 rotatably mounted in the mounting cavity 501, moving blocks 503 threaded onto both ends of the double-ended lead screw 502, and a drive motor 504 fixedly mounted on the outer wall of the turntable 3. The output end of the drive motor 504 is connected to one end of the double-ended lead screw 502 and is used to drive the two moving blocks 503 to move closer or further apart from each other.

[0025] It should be noted that the threads at both ends of the double-ended lead screw 502 have opposite directions and equal pitch, ensuring that the displacement of the moving blocks 503 on both sides and the positioning seat 5 is strictly symmetrical, so that the central axis of the clamping part always coincides with the rotation axis of the turntable 3. The drive motor 504 is a servo motor with an encoder, which can provide real-time feedback on the rotation angle of the double-ended lead screw 502, realize closed-loop control of the spacing of the positioning seat 5, and calibrate when adapting to clamping parts of different specifications.

[0026] Please see Figure 4 , Figure 5 and Figure 6 In this embodiment, connecting grooves are provided on both sides of the upper surface of the turntable 3. A slider is slidably installed in the connecting groove. The lower end of the slider is fixedly connected to the moving block 503, and the upper end of the slider is fixedly connected to the bottom of the positioning seat 5. The positioning seat 5 has an L-shaped structure. A clamping assembly is provided on the top of the positioning seat 5. The clamping assembly is used to clamp and fix the end of the clamp to the positioning seat 5 from top to bottom. The clamping assembly includes a pressing rod 505 installed on the top of the positioning seat 5 and an electric push rod 506 fixedly installed on the outer wall of the positioning seat 5. The middle part of the pressing rod 505 is rotatably connected to the top of the positioning seat 5 through a rotating shaft. One end of the pressing rod 505 is provided with a clamping end. The other end of the pressing rod 505 is connected to the output end of the electric push rod 506 through a hinge plate 803.

[0027] It should be noted that the hinge plate 803 has an arc-shaped structure, and its curvature matches the contour of the side wall of the positioning seat 5. When the electric push rod 506 drives the pressure rod 505 to rotate, it can avoid the side wall of the positioning seat 5 and avoid motion interference. The bottom surface of the pressing end is embedded with a polyurethane buffer pad to ensure sufficient pressing force to prevent the workpiece from slipping, and to avoid the hard metal directly contacting the end of the thin-walled clamp to avoid indentation or local plastic deformation.

[0028] In this embodiment, another implementation of the electric push rod 506 adopts a spring structure. One end of the lowering rod 505 is connected to the outer wall of the positioning seat 5 through the spring. When the operator manually pulls the lowering rod 505, the end of the clamp abuts against the positioning seat 5. After releasing the operator, the elasticity of the spring causes the lowering rod 505 to return to its original position, thereby pressing the end against the end of the clamp to form a pressing limit. The whole structure is a mechanical structure, which does not require a power supply and simplifies the overall structure of the positioning seat 5.

[0029] Please see Figure 1 , Figure 3 , Figure 8 and Figure 9 In this embodiment, the lifting assembly includes a threaded rod 101 rotatably mounted in the lifting frame 10, a servo motor 102 fixedly mounted on the top of the lifting frame 10, a lifting block 103 threaded onto the threaded rod 101, and a lifting seat 104 fixedly mounted on the surface of the lifting block 103. The lifting seat 104 and the bottom of the extension seat 7 are fixedly connected. The output end of the servo motor 102 is connected to the upper end of the threaded rod 101. The servo motor 102 is used to drive the threaded rod 101 to rotate. When the threaded rod 101 rotates, the lifting block 103 drives the extension seat 7 to move up or down.

[0030] It should be noted that a vertical guide rail is also fixedly installed on the inner wall of the lifting frame 10. The side of the lifting block 103 is slidably embedded in the vertical guide rail. The vertical guide rail guides the movement of the lifting block 103 and eliminates radial sway during the transmission of the threaded rod 101. A limit switch is also provided at the top of the threaded rod 101. The limit switch is electrically connected to the servo motor 102. When the lifting block 103 moves to the limit position, the limit switch is triggered, and the servo motor 102 stops running immediately to avoid damage to the equipment due to overtravel of the docking components. The lifting seat 104 and the extension seat 7 are detachably connected by bolts, which facilitates the subsequent replacement of docking components of different specifications to adapt to various types of electric iron accessories.

[0031] Please see Figure 1 , Figure 3 , Figure 8 , Figure 9In this embodiment, the outer limiting assembly includes outer limiting arms 801 hinged to both ends of the mounting base 8, a double-headed cylinder 802 fixedly mounted on the top of the mounting base 8, and hinge plates 803 hinged to the two output ends of the double-headed cylinder 802. An outer limiting roller 804 is provided at the end of the outer limiting arm 801 away from the mounting base 8. The end of the hinge plate 803 away from the double-headed cylinder 802 is rotatably connected to the outer wall of the outer limiting arm 801. The double-headed cylinder 802 is used to synchronously drive the two outer limiting arms 801 to retract towards each other or unfold away from each other.

[0032] It should be noted that the two outer limit arms 801 and the inner support arm 402 are set in a corresponding manner. The double-headed cylinder 802 can drive the two outer limit arms 801 to move, so as to achieve the adaptation with the inner support arm 402. During alignment, the cooperation of the outer limit arms 801 and the inner support arm 402 can form an inner and outer clamp on the clamp.

[0033] Example 2 Please see Figure 3 , Figure 5 and Figure 7 Based on Embodiment 1, this embodiment further optimizes the inner support assembly by adding a dynamic backing function during the welding process. The inner support assembly also includes a lifting cylinder 401 fixedly installed on the upper end of the inner support base 4 and a support mechanism set at the output end of the lifting cylinder 401. The support mechanism includes a connecting plate 4011 fixedly installed on the output end of the lifting cylinder 401, a telescopic rod 4012 vertically installed on the upper end of the connecting plate 4011, a U-shaped frame 4013 fixedly installed on the telescopic end of the telescopic rod 4012, and a roller 4014 rotatably installed in the U-shaped frame 4013. A compression spring 4015 is fitted on the outer side of the telescopic rod 4012, and the upper and lower ends of the compression spring 4015 abut against the U-shaped frame 4013 and the connecting plate 4011, respectively.

[0034] It should be noted that during welding operations, the lifting cylinder 401 drives the support mechanism to rise, causing the roller 4014 to elastically abut against the back of the weld seam of the clamp. When the welding heat input causes the workpiece to expand locally, the compression spring 4015 is compressed, the telescopic rod 4012 shortens, and the roller 4014 retracts slightly with the thermal expansion of the workpiece, always maintaining a close fit with the inner wall of the workpiece. During the cooling stage, the spring rebounds and pushes the roller 4014 to continue to fit, providing a slow cooling effect. The outer circumference of the roller 4014 is also covered with a high-temperature resistant silicone layer, the same material as the high-temperature resistant silicone layer of the inner support roller 403, which can maintain elasticity in the high-temperature welding environment and avoid scratching the inner wall of the workpiece. The lifting cylinder 401 is a cylinder with a locking function, which can be mechanically locked after the support mechanism reaches the preset position.

[0035] The working principle of the above embodiments is as follows: During operation, the drive motor 504 is first started according to the specifications of the clamp. The double-headed lead screw 502 rotates, driving the moving blocks 503 at both ends and the positioning seat 5 to move synchronously to the target distance. Then, the clamp is placed vertically on the turntable 3, with its two ends abutting against the positioning seat 5. The electric push rod 506 drives the pressing rod 505 to rotate, and the polyurethane buffer pad presses the end of the clamp, completing the end fixation. Next, the telescopic cylinder 404 drives the inner support arms 402 on both sides to unfold synchronously. The inner support roller 403 abuts against the inner wall of the clamp, and the high-temperature resistant silicone layer provides flexible contact. The guide groove constrains the movement trajectory, achieving vertical stability. The lifting component drives the docking component to descend, and the vertical guide rail ensures the straightness of the lifting. The gripper cylinder 9 clamps the connecting wing plate and attaches it to the top outer wall of the clamp. The double-headed cylinder 802 drives... The moving outer limit arm 801 retracts, and the outer limit roller 804 and the inner support roller 403 form an inner and outer normal clamp. During welding, the lifting cylinder 401 drives the support mechanism to rise and lock. The support roller 4014 elastically abuts against the back of the weld. When the welding heat input causes the workpiece to expand, the compression spring 4015 is compressed. The support roller 4014 moves backward and always stays in contact. During the cooling stage, the spring rebound provides a slow cooling effect. Pure mechanical elasticity realizes the adaptive control of thermal cycle. The rotating component drives the turntable 3 to rotate at a uniform speed. The tapered roller bearing bears the axial load. The wheel set 305 meshes with the annular slide rail 306 to limit and prevent disengagement. The welding gun 6 completes high-quality circumferential welding with the cooperation of the three-axis drive component. After welding is completed, each component resets in sequence, the finished workpiece is taken out, and the next work cycle can begin.

[0036] It should be noted that the control method of the present invention is controlled by a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming. The power supply is also common knowledge in the art. Furthermore, the present invention is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding device for aligning electric iron accessories, comprising a housing (1), a worktable (2) fixedly mounted on the upper end of the housing (1), and a turntable (3) rotatably mounted on the worktable (2) via a rotating assembly, characterized in that: It also includes an inner support seat (4) fixedly installed at the center of the upper end of the turntable (3), an inner support component set on the inner support seat (4), two positioning seats (5) slidably set on both sides of the upper end of the turntable (3), an adjustment component set inside the turntable (3), and a lifting frame (10) fixedly installed on the upper side of the turntable (3). The positioning seats (5) are used to abut the end of the clamping parts. The output end of the adjustment component is connected to the two positioning seats (5) respectively. The adjustment component is used to synchronously adjust the distance between the two positioning seats (5). The lifting frame (10) is provided with a lifting component. The output end of the lifting component is connected to the docking component and is used to drive the docking component to move up and down. The inner support assembly includes inner support arms (402) symmetrically arranged on both sides of the inner support base (4) and telescopic cylinders (404) that drive the inner support arms (402) to expand or retract synchronously. An inner support roller (403) is rotatably installed at the end of the inner support arm (402) away from the inner support base (4). The inner support roller (403) is used to abut against the inner wall of the clamp to fix the clamp in a vertical direction. The docking assembly includes an extension seat (7), a mounting seat (8) fixedly installed at the end of the extension seat (7), and a gripper cylinder (9) set on the mounting seat (8). The gripper cylinder (9) is used to clamp the connecting wing plate. The mounting seat (8) is also provided with external limiting components on both sides. The external limiting components cooperate with the internal support components to form internal and external clamping and limiting of the clamping member.

2. The electric arc furnace accessory alignment welding device according to claim 1, characterized in that: The rotating assembly includes a servo motor (301) fixedly installed in the chassis (1) and a rotating shaft (302) fixedly installed at the lower end of the turntable (3). The lower end of the rotating shaft (302) extends into the chassis (1) and is fixedly connected to an external gear (303). The output end of the servo motor (301) is fixedly connected to a meshing gear (304). The external gear (303) and the meshing gear (304) are meshed. When the servo motor (301) drives the meshing gear (304) to rotate, the rotating shaft (302) drives the turntable (3) to rotate through the transmission of the external gear (303).

3. The electric arc furnace accessory alignment welding device according to claim 2, characterized in that: The lower edge of the turntable (3) is rotatably mounted with an array of wheels (305), and the upper end of the worktable (2) is fixedly mounted with a ring slide rail (306). The wheel assembly (305) consists of two symmetrically distributed guide wheels, which are respectively attached to the inner and outer walls of the annular slide rail (306) to provide radial limit and axial support for the rotation of the turntable (3).

4. The electric arc furnace accessory alignment welding device according to claim 1, characterized in that: The adjustment assembly includes an installation cavity (501) inside the turntable (3), a double-ended lead screw (502) rotatably installed in the installation cavity (501), moving blocks (503) threaded onto both ends of the double-ended lead screw (502), and a drive motor (504) fixedly installed on the outer wall of the turntable (3). The output end of the drive motor (504) is connected to one end of the double-ended lead screw (502) to drive the two moving blocks (503) to move closer or further apart.

5. The electric arc furnace accessory alignment welding device according to claim 4, characterized in that: Connecting grooves are provided on both sides of the upper surface of the turntable (3). A slider is slidably installed in the connecting groove. The lower end of the slider is fixedly connected to the moving block (503). The upper end of the slider is fixedly connected to the bottom of the positioning seat (5). The positioning seat (5) has an L-shaped structure. A pressing component is provided on the top of the positioning seat (5). The pressing component is used to press and fix the end of the clamp onto the positioning seat (5) from top to bottom.

6. The electric arc furnace accessory alignment welding device according to claim 1, characterized in that: The clamping assembly includes a pressing rod (505) mounted on the top of the positioning seat (5) and an electric push rod (506) fixedly mounted on the outer wall of the positioning seat (5). The middle part of the pressing rod (505) is rotatably connected to the top of the positioning seat (5) through a rotating shaft. One end of the pressing rod (505) is provided with a clamping end, and the other end of the pressing rod (505) is connected to the output end of the electric push rod (506) through a hinge plate.

7. The electric arc furnace accessory alignment welding device according to claim 1, characterized in that: The inner support assembly also includes a lifting cylinder (401) fixedly installed on the upper end of the inner support seat (4) and a support mechanism provided at the output end of the lifting cylinder (401); The support mechanism includes a connecting plate (4011) fixedly installed at the output end of the lifting cylinder (401), a telescopic rod (4012) vertically installed at the upper end of the connecting plate (4011), a U-shaped frame (4013) fixedly installed at the telescopic end of the telescopic rod (4012), and a roller (4014) rotatably installed in the U-shaped frame (4013). A compression spring (4015) is fitted on the outside of the telescopic rod (4012), and the upper and lower ends of the compression spring (4015) abut against the U-shaped frame (4013) and the connecting plate (4011) respectively.

8. The electric railway accessory alignment welding device according to claim 1, characterized in that: The lifting assembly includes a threaded rod (101) rotatably mounted in the lifting frame (10), a second servo motor (102) fixedly mounted on the top of the lifting frame (10), a lifting block (103) threaded onto the threaded rod (101), and a lifting seat (104) fixedly mounted on the surface of the lifting block (103). The bottom of the lifting seat (104) and the extension seat (7) are fixedly connected. The output end of the second servo motor (102) is connected to the upper end of the threaded rod (101). The second servo motor (102) is used to drive the threaded rod (101) to rotate. When the threaded rod (101) rotates, the lifting block (103) drives the extension seat (7) to move up or down.

9. The electric arc furnace accessory alignment welding device according to claim 1, characterized in that: The outer limiting assembly includes an outer limiting arm (801) hinged to both ends of the mounting base (8), a double-headed cylinder (802) fixedly mounted on the top of the mounting base (8), and a hinge plate (803) hinged to the two output ends of the double-headed cylinder (802). An outer limiting roller (804) is provided at the end of the outer limiting arm (801) away from the mounting base (8). The end of the hinge plate (803) away from the double-headed cylinder (802) is rotatably connected to the outer wall of the outer limiting arm (801). The double-headed cylinder (802) is used to synchronously drive the two outer limiting arms (801) to retract towards each other or unfold away from each other.

10. A welding device for aligning electrical iron accessories according to claim 1, characterized in that: It also includes a welding module, which includes a welding gun (6) and a three-axis drive assembly. The welding gun (6) is mounted on the upper end of the worktable (2) via the three-axis drive assembly. The three-axis drive assembly is used to drive the welding gun (6) to move along the X-axis, Y-axis and Z-axis directions to perform welding operations on the connecting wing plate and reinforcing plate on the clamp.

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