Automatic welding equipment for end faces of spiral plates

Abstract

The utility model discloses automatic welding equipment for the end face of a spiral plate, which relates to the technical field of welding, aims to solve the technical problem that the welding path of a spiral plate heat exchanger is single, and comprises a base, a rotating mechanism, a control operation cabinet, a cross module mechanism, a laser tracking sensor and a composite welding holder. The composite welding holder is composed of a bearing table, an indexing assembly and an execution assembly, the indexing assembly can provide two working modes of continuous rotation and intermittent rotation, and the execution assembly drives the welding gun to be overlapped on a reference spiral track to form a wavy spiral welding track and a bevel spiral welding track. Automatic welding of two kinds of high-performance welding seams is achieved through one set of equipment, the anti-fatigue advantage of a wave-shaped track and the high-strength characteristic of a bevel-shaped track are both achieved, stress distribution of the welding seams is effectively improved, and welding quality, efficiency and equipment universality are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, and more specifically, to an automatic welding device for the end face of a spiral plate. Background Technology

[0002] A spiral plate heat exchanger is a high-efficiency heat exchange device made of two parallel metal plates rolled together to form two adjacent spiral channels. It features a compact structure and high heat transfer efficiency, and is widely used in various industrial fields such as chemical, environmental protection, and energy. In particular, the Type I non-removable spiral plate heat exchanger requires welding seals at the end faces of the spiral channels to achieve a strict seal between the channels and prevent fluid cross-flow. This weld extends along the entire spiral channel, and its quality directly determines the pressure-bearing capacity, sealing reliability, and service life of the heat exchanger.

[0003] Currently, the main methods for welding the end faces of spiral plate heat exchangers include traditional manual welding and conventional automated welding. Traditional manual welding relies entirely on the individual skills and experience of the welder, which is not only labor-intensive and inefficient, but also results in large fluctuations in weld quality, making it difficult to ensure overall uniformity and reliability of the weld. This leads to low product qualification rates and high production costs.

[0004] To address the drawbacks of manual welding, existing technologies have developed solutions that replace manual labor with conventional automated welding equipment. These devices can weld along a fixed helical trajectory, improving welding efficiency to some extent. However, this single, uniform helical trajectory welding method typically results in a continuous, straight weld bead. This weld bead suffers from relatively concentrated stress distribution and insufficient bond strength with the base material, making its fatigue resistance and overall strength less than ideal when subjected to alternating thermal stress or mechanical vibration. Therefore, we propose an automated welding device for the end faces of helical plates. Utility Model Content

[0005] The purpose of this invention is to provide an automatic welding device for the end face of spiral plates to solve the technical problem of a single welding path in spiral plate heat exchangers.

[0006] To solve the above technical problems, this utility model provides the following technical solution: an automatic welding equipment for the end face of a spiral plate, including a base, a rotating mechanism on the base, a control cabinet on the back of the base, and symmetrical cross module mechanisms on the base away from the rotating mechanism. One set of the cross module mechanisms is equipped with a laser tracking sensor, and the other set of the cross module mechanisms is equipped with a composite welding gimbal. The moving end of the composite welding gimbal is equipped with a welding torch.

[0007] The composite welding gimbal includes a support platform, an indexing component, and an execution component. The support platform is fixedly mounted on the cross module mechanism, the indexing component is fixedly mounted on the top of the support platform, the execution component is fixedly mounted on the bottom of the support platform, and the welding torch is fixedly mounted on the moving end of the execution component.

[0008] The indexing component is configured to provide two working modes: continuous rotation and intermittent rotation, and is converted into two composite motion trajectories of the welding torch by the execution component:

[0009] When in continuous rotation mode, the welding torch superimposes a wavy spiral welding trajectory on the reference spiral trajectory generated by the rotation mechanism and the cross module mechanism.

[0010] When in intermittent rotation mode, the welding torch superimposes on the reference spiral trajectory generated by the rotation mechanism and the cross module mechanism to form a bend-shaped spiral welding trajectory.

[0011] Preferably, the reference spiral trajectory is generated by the coordinated motion of the rotating mechanism and the cross module mechanism;

[0012] The rotating mechanism is used to drive the workpiece to rotate at a constant speed around its central axis, and the cross module mechanism is used to drive the composite welding gimbal and the welding torch to move at a constant speed in a straight line along the radial direction of the workpiece.

[0013] The uniform rotary motion and the uniform linear motion combine to make the trajectory of the welding torch relative to the end face of the workpiece a uniform spiral.

[0014] Preferably, the top of the support platform is provided with a top frame and a top plate, one end of the indexing component is provided on the top frame, and the other end of the indexing component is provided on the top plate.

[0015] Preferably, the support platform is further provided with a rotating hole, and one end of the indexing component is rotatably inserted into the rotating hole.

[0016] Preferably, the indexing assembly includes a motor, an indexing plate, a drive shaft, toothed spurs A, a driven plate, a meshing column, a switching unit, a turntable, and a rotating rod. The motor is fixedly mounted on the top plate, the drive shaft is rotatably inserted into the top plate and fixedly connected to the motor output end, a plurality of toothed spurs A are fixedly mounted on the indexing plate at equal intervals along a semicircle, the driven plate is rotatably mounted on the top frame, the meshing columns are fixedly mounted on the driven plate at equal intervals in a ring, the switching unit is fixedly mounted on the indexing plate, the turntable is rotatably mounted on the rotating hole, one end of the rotating rod is fixedly connected to the driven plate, and the other end of the rotating rod is fixedly connected to the turntable.

[0017] Preferably, the switching unit includes an electric push rod, a semicircular frame, and toothed columns B. The electric push rod is fixedly disposed at the end of the indexing plate away from the toothed column A. The semicircular frame is fixedly connected to the output end of the electric push rod. A plurality of toothed columns B are fixedly disposed at equal intervals along the semicircle on the semicircular frame. The end of the toothed column B away from the semicircular frame is movably inserted into the indexing plate.

[0018] Preferably, the turntable is provided with a sliding shaft at the end away from the rotating rod, and the sliding shaft is slidably inserted into the actuating component.

[0019] Preferably, the bottom end of the support platform is symmetrically fixed with a slide, the execution component is slidably mounted on the slide, the bottom end of the slide has a through hole, a motor is provided on the outer side of the bottom end of the slide, a convex ball is rotatably provided in the through hole, the convex ball is rotatably connected to the inner wall of the through hole, and the output end of the motor is fixedly connected to the convex ball.

[0020] Preferably, the execution component includes a conversion block, an elongated hole, and a slide bar. The slide bar is slidably inserted into the slide frame, the conversion block is fixedly connected between two slide bars, the elongated hole is formed on the conversion block, the slide shaft is slidably inserted into the elongated hole, and the welding torch is fixedly connected to the bottom end of the conversion block.

[0021] Preferably, the slide bar includes a bottom block, a top block, a spring cavity, an insert block, and a magnetic strip. The top block is slidably disposed on the upper part of the slide frame, the bottom block is movably disposed on the lower part of the slide frame, the spring cavity is opened at the bottom end of the top block, the insert block is disposed at the top end of the bottom block, and the insert block is slidably inserted into the spring cavity. One of the magnetic strips is fixedly disposed at the top end of the insert block, and the other magnetic strip is fixedly disposed at the top end of the spring cavity. The two magnetic strips are arranged with their same magnetic poles facing each other.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. This utility model integrates a rotating mechanism, a cross module, and a composite welding gimbal, enabling automated welding of two high-performance spiral welds on a single device. This breaks through the technical limitations of traditional welding equipment with its single function and significantly improves the equipment's versatility, integration, and intelligence.

[0024] 2. This utility model also drives the welding torch to form a smooth and continuous wave-shaped trajectory through a continuous rotation mode, which effectively improves the stress distribution in the weld area, significantly enhances the fatigue resistance and load uniformity of the weld, and maintains high welding efficiency and low process cost, providing the best cost-effective solution for the needs of the mid-range market.

[0025] 3. This utility model also uses intermittent indexing control to form a beveled trajectory with mechanical interlocking effect, which greatly enhances the shear resistance and static structural strength of the weld, making it suitable for harsh working conditions such as high pressure and strong vibration, and providing reliable welding quality assurance for high-end application scenarios.

[0026] 4. This utility model also adopts a micro-vibration mechanism that combines convex ball jacking and magnetic floating to form larger and fuller reinforced weld points on the angled weld, effectively increasing the penetration depth and bonding area, and further improving the mechanical properties and sealing reliability of the weld without significantly increasing costs. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure and spiral plate heat exchanger of this utility model;

[0028] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 3 This is a top view of the structure of this utility model;

[0030] Figure 4 This is a schematic diagram of the composite welding gimbal and welding torch structure of this utility model;

[0031] Figure 5 This is a front view structural diagram of the composite welding gimbal and welding torch of this utility model.

[0032] Figure 6 This is a schematic diagram of the support platform and indexing component structure of this utility model;

[0033] Figure 7 This is a schematic diagram of the disassembled structure of the indexing component and switching unit of this utility model;

[0034] Figure 8 This is a schematic diagram of the support platform, execution components, and bottom structure of the welding torch of this utility model;

[0035] Figure 9 This is a schematic diagram of the bottom structure of the support platform and execution component of this utility model;

[0036] Figure 10 This is a schematic diagram of the conversion block, elongated hole, and slider structure of this utility model;

[0037] Figure 11 This is a schematic diagram showing the disassembled slider and internal structure of this utility model;

[0038] Figure 12 This is a schematic diagram of the cross-sectional structure of the carriage of this utility model;

[0039] Figure 13This is a schematic diagram of the reference spiral weld trajectory (dashed line) and the wavy spiral welding trajectory (solid line) of this utility model;

[0040] Figure 14 This is a schematic diagram of the reference spiral weld trajectory (dashed line) and the angled spiral weld trajectory (solid line) of this utility model.

[0041] Explanation of the labels in the diagram:

[0042] 1. Base; 2. Rotation mechanism; 3. Control cabinet; 4. Cross module mechanism; 5. Laser tracking sensor; 6. Composite welding gimbal; 7. Welding torch;

[0043] 601, support platform; 6011, top frame; 6012, top plate; 6013, rotating hole; 6014, carriage; 6015, through hole; 6016, motor; 6017, convex ball;

[0044] 602, Indexing assembly; 6021, Motor; 6022, Indexing plate; 6023, Drive shaft; 6024, Gear pin A; 6025, Driven plate; 6026, Engaging pin; 6027, Switching unit; 6028, Turntable; 6029, Rotary rod;

[0045] 603, Execution component; 6031, Conversion block; 6032, Elongated hole; 6033, Slider; 6034, Bottom block; 6035, Top block; 6036, Spring cavity; 6037, Insertion block; 6038, Magnetic strip;

[0046] 6041, Electric linear actuator; 6042, Semicircular frame; 6043, Gear column B; 6044, Sliding shaft. Detailed Implementation

[0047] like Figures 1 to 14 As shown, the present invention relates to an automatic welding equipment for the end face of a spiral plate, including a base 1, a rotating mechanism 2 on the base 1, a control cabinet 3 on the back of the base 1, and a cross module mechanism 4 symmetrically arranged on the base 1 away from the rotating mechanism 2. One set of cross module mechanisms 4 is equipped with a laser tracking sensor 5, and the other set of cross module mechanisms 4 is equipped with a composite welding gimbal 6. The moving end of the composite welding gimbal 6 is equipped with a welding torch 7.

[0048] In this invention, the laser tracking sensor 5 is a laser displacement sensor based on the triangulation principle. It is configured to monitor the working distance between the welding torch 7 and the end face of the spiral plate in real time during the welding process, and feed the distance signal back to the control system in the control cabinet 3.

[0049] The composite welding gimbal 6 includes a support platform 601, an indexing component 602, and an execution component 603. The support platform 601 is fixedly mounted on the cross module mechanism 4, the indexing component 602 is fixedly mounted on the top of the support platform 601, the execution component 603 is fixedly mounted on the bottom of the support platform 601, and the welding torch 7 is fixedly mounted on the moving end of the execution component 603.

[0050] The indexing component 602 is configured to provide two working modes: continuous rotation and intermittent rotation, and is converted into two composite motion trajectories of the welding torch 7 by the execution component 603:

[0051] When in continuous rotation mode, the welding torch 7 superimposes a wavy spiral welding trajectory onto the reference spiral trajectory generated by the rotation mechanism 2 and the cross module mechanism 4. (See [link]) Figure 13 ;

[0052] When in intermittent rotation mode, the welding torch 7 superimposes a bend-shaped spiral welding trajectory onto the reference spiral trajectory generated by the rotating mechanism 2 and the cross module mechanism 4. (See [link]). Figure 14 .

[0053] When this utility model is working, the rotating mechanism 2 drives the spiral plate workpiece to rotate at a constant speed, while the two sets of cross module mechanisms 4 respectively drive the composite welding gimbal 6 and the welding torch 7 to move at a constant speed along the radial direction of the workpiece. The two combine to make the welding torch 7 form a reference spiral trajectory relative to the end face of the workpiece.

[0054] Based on this, the indexing component 602 switches its working mode according to welding process requirements: when in continuous rotation mode, the drive actuator 603 causes the welding torch 7 to produce continuous reciprocating motion. This motion is superimposed on the reference spiral trajectory, thus forming a wavy spiral welding trajectory. This mode provides a smooth, uninterrupted welding process with high efficiency and controllable costs. The resulting wavy weld effectively disperses stress. (See [reference]). Figure 13 This significantly improves fatigue resistance, and its strength, sealing performance, and reliability are significantly superior to traditional single straight spiral welds. This makes this method particularly suitable for cost-sensitive mid-range markets and applications that demand higher reliability than traditional processes, offering a superior solution that achieves the best balance between efficiency, cost, and performance.

[0055] When in intermittent rotation mode, the drive actuator 603 causes the welding torch 7 to produce a reciprocating motion with pauses. This motion is superimposed on the reference helical trajectory, thus forming a bend-shaped helical welding trajectory. See [link to documentation]. Figure 14This design utilizes a folded structure to create a powerful mechanical interlocking effect, providing the weld with extremely high static strength and anti-peeling capability. Although its longer welding path and frequent start-stop cycles result in relatively lower efficiency and higher cost, it solves the problem of potential failure of traditional welds under extreme conditions. This makes this design specifically suited for high-end markets and critical equipment with extreme requirements for structural strength and safety, such as applications subjected to high pressure, strong vibration, or large shear forces.

[0056] This invention enables automated welding of two different types of reinforced welds using a single device, effectively improving the stress distribution of the weld and enhancing the strength, sealing performance, and fatigue resistance of the welded structure.

[0057] In the embodiments of this utility model, the reference spiral trajectory is generated by the coordinated motion of the rotating mechanism 2 and the cross module mechanism 4; the rotating mechanism 2 is used to drive the workpiece to rotate at a constant speed around its central axis, and the cross module mechanism 4 is used to drive the composite welding gimbal 6 and the welding torch 7 to move at a constant speed in a straight line along the radial direction of the workpiece; the combination of the constant speed rotational motion and the constant speed linear motion makes the motion trajectory of the welding torch 7 relative to the end face of the workpiece a constant speed spiral.

[0058] In this invention, the rotating mechanism 2 is used to clamp and drive the spiral plate workpiece to rotate at a constant speed around its own central axis, i.e., circular motion. At the same time, one of the cross module mechanisms 4 is used to drive the composite welding gimbal 6 and welding torch 7 on it to move at a constant speed in a straight line along the radial direction of the workpiece, i.e., in the direction pointing towards or away from the center of the workpiece.

[0059] The above-mentioned uniform rotational motion and uniform linear motion are superimposed and combined, and the trajectory of the welding torch 7 is a precise, uniform spiral line with equal pitch. This uniform spiral line constitutes the reference path for the subsequent composite weld.

[0060] In an embodiment of this utility model, the top of the support platform 601 is provided with a top frame 6011 and a top plate 6012, one end of the indexing component 602 is provided on the top frame 6011, and the other end of the indexing component 602 is provided on the top plate 6012.

[0061] In another embodiment of this utility model, a rotating hole 6013 is also provided on the support platform 601, and one end of the indexing component 602 is rotatably inserted into the rotating hole 6013.

[0062] In another embodiment of this utility model, the indexing assembly 602 includes a motor 6021, an indexing plate 6022, a drive shaft 6023, toothed columns A6024, a driven plate 6025, a meshing column 6026, a switching unit 6027, a turntable 6028, and a rotating rod 6029. The motor 6021 is fixedly mounted on the top plate 6012, and the drive shaft 6023 is rotatably inserted into the top plate 6012 and fixedly connected to the output end of the motor 6021. A plurality of toothed columns A6024... 024 is fixedly mounted on the indexing plate 6022 at equal intervals along the semicircle, the driven plate 6025 is rotatably mounted on the top frame 6011, the meshing column 6026 is fixedly mounted on the driven plate 6025 at equal intervals in a ring, the switching unit 6027 is fixedly mounted on the indexing plate 6022, the turntable 6028 is rotatably mounted on the rotating hole 6013, one end of the rotating rod 6029 is fixedly connected to the driven plate 6025, and the other end of the rotating rod 6029 is fixedly connected to the turntable 6028.

[0063] In this invention, the motor 6021 starts, driving the drive shaft 6023 and the indexing plate 6022 to rotate together. The eight toothed spurs A6024 fixed on the indexing plate 6022 move accordingly. These toothed spurs A6024 periodically mesh with the sixteen meshing pins 6026 fixed on the driven plate 6025. This meshing action drives the driven plate 6025 to perform intermittent indexing rotations; that is, for every one revolution of the indexing plate 6022 driven by the motor 6021, the driven plate 6025 rotates half a revolution, followed by an intermittent half-revolution. The rotation of the driven plate 6025 is transmitted to the turntable 6028 via the rotating rod 6029, ultimately outputting the intermittent indexing rotation motion, providing the core power for the subsequent generation of the angled spiral welding trajectory.

[0064] In an embodiment of this utility model, the switching unit 6027 includes an electric push rod 6041, a semicircular frame 6042, and toothed columns B6043. The electric push rod 6041 is fixedly mounted on the indexing plate 6022 at the end away from the toothed column A6024. The semicircular frame 6042 is fixedly connected to the output end of the electric push rod 6041. Several toothed columns B6043 are fixedly mounted on the semicircular frame 6042 at equal intervals along the semicircle. The end of the toothed column B6043 away from the semicircular frame 6042 is movably inserted into the indexing plate 6022.

[0065] In an embodiment of this utility model, a sliding shaft 6044 is provided at the end of the turntable 6028 away from the rotating rod 6029, and the sliding shaft 6044 is slidably inserted into the execution component 603.

[0066] In this invention, the electric push rod 6041 serves as a power source, and its output end drives the fixed semicircular frame 6042 to perform linear motion, causing the several toothed columns B6043 fixed on the semicircular frame to move synchronously. When the electric push rod pushes the toothed columns B6043 forward to engage with the meshing column 6026 on the driven plate 6025, the continuous rotational motion generated by the motor 6021 driving the indexing plate 6022 can be transmitted to the driven plate 6025 through the continuous meshing of the toothed columns B6043 and the meshing column 6026, thereby driving the rotating rod 6029 and the turntable 6028 to achieve continuous rotation. The continuous rotation of the turntable 6028 drives its eccentrically set sliding shaft 6044 to perform circumferential motion. During the process of sliding and inserting the sliding shaft 6044 into the actuator 603, the continuous rotation of the turntable 6028 is converted into the continuous reciprocating motion of the actuator 603, thereby providing the core power for generating the wavy spiral welding trajectory.

[0067] In another embodiment of this utility model, a slide 6014 is symmetrically fixed at the bottom end of the support platform 601, and the execution component 603 is slidably disposed on the slide 6014. A through hole 6015 is opened at the bottom end of the slide 6014, and a motor 6016 is provided on the outer side of the bottom end of the slide 6014. A convex ball 6017 is rotatably disposed in the through hole 6015, and the convex ball 6017 is rotatably connected to the inner wall of the through hole 6015. The output end of the motor 6016 is fixedly connected to the convex ball 6017.

[0068] In this utility model, the motor 6016 drives the convex ball 6017 to rotate in the through hole 6015, according to... Figure 12 It can be seen that when the protruding end of the convex ball 6017 rotates to the opening end of the slide 6014, the protruding end of the convex ball 6017 is higher than the end face of the through hole 6015. At this time, the convex ball 6017 pushes the actuator 603, causing the actuator 603 to drive the welding torch 7 to produce intermittent vertical vibration. This movement is for the angled spiral welding trajectory with high welding quality. Due to the slight change in the height of the welding torch 7, larger and fuller weld points are eventually formed on the weld. Under the condition of effectively controlling costs, the weld penetration and bonding area are increased, and the welding quality and structural strength of the angled spiral weld are significantly improved.

[0069] In another embodiment of this utility model, the execution component 603 includes a conversion block 6031, an elongated hole 6032, and a slide bar 6033. The slide bar 6033 is slidably inserted into the slide frame 6014. The conversion block 6031 is fixedly connected between the two slide bars 6033. The elongated hole 6032 is opened on the conversion block 6031. The sliding shaft 6044 is slidably inserted into the elongated hole 6032. The welding torch 7 is fixedly connected to the bottom end of the conversion block 6031.

[0070] In an embodiment of this utility model, the slide bar 6033 includes a bottom block 6034, a top block 6035, a spring cavity 6036, an insert block 6037, and a magnetic strip 6038. The top block 6035 is slidably disposed on the upper part of the slide frame 6014, the bottom block 6034 is movably disposed on the lower part of the slide frame 6014, the spring cavity 6036 is opened at the bottom end of the top block 6035, the insert block 6037 is disposed at the top end of the bottom block 6034, and the insert block 6037 is slidably inserted into the spring cavity 6036. One magnetic strip 6038 is fixedly disposed at the top end of the insert block 6037, and the other magnetic strip 6038 is fixedly disposed at the top end of the spring cavity 6036. The two magnetic strips 6038 are arranged with their same magnetic poles facing each other.

[0071] In this utility model, the sliding shaft 6044 serves as the power input end. Its circular motion acts on the elongated hole 6032 on the conversion block 6031. Through the constraint of the inner wall of the elongated hole 6032 on the sliding shaft 6044, the rotational motion of the sliding shaft 6044 is converted into the linear reciprocating motion of the conversion block 6031 along the direction of the slide 6014, and finally drives the welding torch 7 fixed at the bottom of the conversion block 6031 to move.

[0072] Meanwhile, the magnetic strip 6038 fixed to the top of the spring cavity 6036 of the top block 6035 and another magnetic strip 6038 fixed to the top of the insert block 6037 are arranged with their corresponding magnetic poles facing each other. The continuous repulsive force generated between the two magnetic strips 6038, while ensuring that the sliding fit between the top block 6035 and the slide 6014 remains unchanged, creates a floating state in which the entire lower sliding pair, namely the bottom block, the insert block, the conversion block and the welding torch, can move slightly in the vertical direction.

[0073] When the convex ball 6017 pushes up the bottom block 6034, it pushes the conversion block 6031 to drive the welding torch 7 to produce the required vertical vibration; and when the convex ball 6017 rotates away, the magnetic force can immediately reset it.

[0074] Working Principle: This embodiment provides an automatic welding device for the end face of a spiral plate. During operation, the rotating mechanism 2 drives the workpiece to rotate at a constant speed, while the cross module mechanism 4 drives the welding torch 7 to move radially at a constant speed, forming a reference spiral trajectory. Based on this, the indexing component 602 selects the working mode through the switching unit 6027: when switched to continuous rotation mode, the motor 6021 drives the turntable 6028 to rotate continuously through the gear column B6043, driving the sliding shaft 6044 to convert the circular motion into a rotational motion via the conversion block 6031. The continuous radial reciprocating motion of the welding torch 7, superimposed with the reference trajectory, forms a wavy spiral weld. When switching to intermittent rotation mode, the motor 6021 drives the turntable 6028 to rotate intermittently through the toothed column A6024, causing the welding torch 7 to produce a radial stepping motion with pauses, forming a bend-shaped spiral weld. At the same time, the motor 6016 can drive the convex ball 6017 to push the bottom block 6034, and use the magnetic floating structure to make the welding torch 7 produce vertical vibration, forming a reinforced weld point at the bend, ultimately achieving precise and efficient welding of two high-performance welds with a single device.

[0075] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. An automatic welding device for the end faces of spiral plates, characterized in that, Includes a base (1), on which a rotating mechanism (2) is provided, and a control cabinet (3) is provided on the back of the base (1). A cross module mechanism (4) is symmetrically provided on the base (1) away from the rotating mechanism (2). One set of the cross module mechanism (4) is equipped with a laser tracking sensor (5), and the other set of the cross module mechanism (4) is equipped with a composite welding gimbal (6). The moving end of the composite welding gimbal (6) is equipped with a welding gun (7). The composite welding gimbal (6) includes a support platform (601), an indexing component (602), and an execution component (603). The support platform (601) is fixedly mounted on the cross module mechanism (4), the indexing component (602) is fixedly mounted on the top of the support platform (601), the execution component (603) is fixedly mounted on the bottom of the support platform (601), and the welding torch (7) is fixedly mounted on the moving end of the execution component (603). The indexing component (602) is configured to provide two working modes: continuous rotation and intermittent rotation, and is converted into two composite motion trajectories of the welding torch (7) by the execution component (603): When in continuous rotation mode, the welding torch (7) superimposes on the reference spiral trajectory generated by the rotation mechanism (2) and the cross module mechanism (4) to form a wavy spiral welding trajectory; When in intermittent rotation mode, the welding torch (7) superimposes on the reference spiral trajectory generated by the rotation mechanism (2) and the cross module mechanism (4) to form a beveled spiral welding trajectory.

2. The automatic welding equipment for the end face of a spiral plate according to claim 1, characterized in that, The reference spiral trajectory is generated by the coordinated motion of the rotating mechanism (2) and the cross module mechanism (4); The rotating mechanism (2) is used to drive the workpiece to rotate at a constant speed around its central axis, and the cross module mechanism (4) is used to drive the composite welding gimbal (6) and the welding torch (7) to move at a constant speed in a straight line along the radial direction of the workpiece. The uniform rotary motion and the uniform linear motion combine to make the trajectory of the welding torch (7) relative to the end face of the workpiece a uniform spiral.

3. The automatic welding equipment for the end faces of spiral plates according to claim 1, characterized in that, The top of the support platform (601) is provided with a top frame (6011) and a top plate (6012). One end of the indexing component (602) is provided on the top frame (6011), and the other end of the indexing component (602) is provided on the top plate (6012).

4. The automatic welding equipment for the end faces of spiral plates according to claim 3, characterized in that, The support platform (601) is also provided with a rotating hole (6013), and one end of the indexing component (602) is rotatably inserted into the rotating hole (6013).

5. The automatic welding equipment for the end faces of spiral plates according to claim 4, characterized in that, The indexing assembly (602) includes a motor (6021), an indexing plate (6022), a drive shaft (6023), gear spurs A (6024), a driven plate (6025), a meshing column (6026), a switching unit (6027), a turntable (6028), and a rotating rod (6029). The motor (6021) is fixedly mounted on the top plate (6012). The drive shaft (6023) is rotatably inserted into the top plate (6012) and fixedly connected to the output end of the motor (6021). A plurality of gear spurs A (6024) are evenly spaced along a semicircle. The driven plate (6025) is rotatably mounted on the top frame (6011), the meshing column (6026) is fixedly mounted on the driven plate (6025) in a ring at equal intervals, the switching unit (6027) is fixedly mounted on the indexing plate (6022), the turntable (6028) is rotatably mounted on the rotating hole (6013), one end of the rotating rod (6029) is fixedly connected to the driven plate (6025), and the other end of the rotating rod (6029) is fixedly connected to the turntable (6028).

6. The automatic welding equipment for the end faces of spiral plates according to claim 5, characterized in that, The switching unit (6027) includes an electric push rod (6041), a semicircular frame (6042), and toothed columns B (6043). The electric push rod (6041) is fixedly mounted on the indexing plate (6022) at the end away from the toothed column A (6024). The semicircular frame (6042) is fixedly connected to the output end of the electric push rod (6041). A plurality of toothed columns B (6043) are fixedly mounted on the semicircular frame (6042) at equal intervals along the semicircle. The end of the toothed column B (6043) away from the semicircular frame (6042) is movably inserted into the indexing plate (6022).

7. The automatic welding equipment for the end face of a spiral plate according to claim 5, characterized in that, The turntable (6028) is eccentrically mounted with a sliding shaft (6044) at the end away from the rotating rod (6029), and the sliding shaft (6044) is slidably inserted into the actuating component (603).

8. The automatic welding equipment for the end faces of spiral plates according to claim 7, characterized in that, The support platform (601) is symmetrically fixed with a slide (6014) at its bottom end. The execution component (603) is slidably mounted on the slide (6014). The slide (6014) has a through hole (6015) at its bottom end. A motor (6016) is provided on the outer side of the bottom end of the slide (6014). A convex ball (6017) is rotatably provided inside the through hole (6015). The convex ball (6017) is rotatably connected to the inner wall of the through hole (6015). The output end of the motor (6016) is fixedly connected to the convex ball (6017).

9. The automatic welding equipment for the end faces of spiral plates according to claim 8, characterized in that, The execution component (603) includes a conversion block (6031), an elongated hole (6032), and a slide bar (6033). The slide bar (6033) is slidably inserted into the slide frame (6014). The conversion block (6031) is fixedly connected between the two slide bars (6033). The elongated hole (6032) is opened on the conversion block (6031). The sliding shaft (6044) is slidably inserted into the elongated hole (6032). The welding torch (7) is fixedly connected to the bottom end of the conversion block (6031).

10. An automatic welding device for the end face of a spiral plate according to claim 9, characterized in that, The slide bar (6033) includes a bottom block (6034), a top block (6035), a spring cavity (6036), an insert block (6037), and a magnetic strip (6038). The top block (6035) is slidably disposed on the upper part of the slide (6014), the bottom block (6034) is movably disposed on the lower part of the slide (6014), the spring cavity (6036) is opened at the bottom end of the top block (6035), the insert block (6037) is disposed at the top end of the bottom block (6034), and the insert block (6037) is slidably inserted into the spring cavity (6036). One of the magnetic strips (6038) is fixedly disposed at the top end of the insert block (6037), and the other magnetic strip (6038) is fixedly disposed at the top end of the spring cavity (6036). The two magnetic strips (6038) are arranged with their same magnetic poles facing each other.

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