Laser welding device for plate joint of electrical control cabinet

Abstract

The invention relates to the technical field of laser welding, and discloses a laser welding device for a plate joint of an electrical control cabinet, which comprises a frame body and a cabinet body, and further comprises two reinforcing devices slidably connected to the top of the frame body, welding devices slidably connected to the reinforcing devices, and two cylinders fixedly connected with a support frame, the reinforcing buckle is arranged outside the end, close to the lock catch, of the driving frame, one side of the driving frame is located in the guide plate, and the shaft block and the electric cylinder enable the position of the cabinet body to be changed and cooperate with the welder to automatically weld the cabinet body. The two welders can be used for synchronously welding two welding seams of the cabinet body at the same time, so that the welding time is shortened, the two welding seams are uniformly heated, the thermal deformation difference caused by sequential welding is effectively avoided, the position change of the cabinet body is driven, the welding seams at different positions of the cabinet body are continuously overlapped with the welding points of the welders, and the welding quality is improved. Therefore, a specific welding path is formed, and the automatic welding function is achieved through a simpler and more efficient mechanical structure.

Description

Technical Field

[0001] The present invention relates to the technical field of laser welding, and particularly to a laser welding device for the connection of electrical control cabinet plates. Background Art

[0002] Laser welding utilizes high-energy laser pulses to locally heat a material area. The energy of the laser radiation diffuses into the interior of the material through heat conduction, melting the material for welding.

[0003] However, in the prior art, electrical cabinets are usually assembled and welded from three plates, thus forming a C-shaped weld on both sides of the cabinet body. Currently, the welding methods are divided into two types: robotic arm full-automatic welding and manual-assisted welding. For robotic arm full-automatic welding, a high-precision robotic arm is used as the execution component and is controlled by multiple precision mechanical servo drives, resulting in a high cost. At the same time, the supporting laser welding component not only has strict requirements for the power stability and beam quality of the laser generator but also requires a complex optical path conduction and focusing system, further increasing the equipment investment. In actual use, to ensure that the robotic arm maintains a micron-level positioning accuracy for a long time, it is necessary to regularly lubricate, maintain, and replace key components such as its joint bearings and reducers. In addition, although the C-shaped weld seems regular, it has the characteristics of continuous turning and spatial position changes. Moreover, due to the differences in the C-shaped dimensions and angles of different specifications of electrical cabinets, it is necessary to continuously adjust the program for adaptation, greatly reducing the equipment utilization efficiency. In the small and medium batch production mode, especially when only welding electrical cabinets, the high equipment cost and limited output are difficult to achieve an effective balance. For the manual-assisted welding method, during the operation process, workers need to manually rotate the cabinet body to align the weld position with the welding area, and then cooperate with a single reciprocating linear moving welding device to complete the welding work. For electrical cabinets, after each rotation of the cabinet body, it is necessary to fix the cabinet body with a simple tooling fixture. However, it is difficult for manual operation to ensure the installation stability for a long time, resulting in problems such as weld offset and uneven width. Moreover, long-term repetitive high-intensity labor is likely to cause workers to fatigue, leading to an increase in the operation error rate and a significant decrease in production efficiency. Especially when facing large-scale orders, the production capacity and effect of manual welding make the welding quality uneven, and it is difficult to control the product quality stability. There is also a method that completely relies on workers to hold the welding device for welding. However, due to the C-shaped weld itself, it is very difficult for workers to control the moving speed of the welding device during welding, and sudden speed changes are likely to cause unstable welding heat input, resulting in defects such as undercut and overlap on the weld, and problems such as oxidation and porosity on the weld, seriously affecting the overall structural strength and sealing performance of the electrical cabinet, increasing the later maintenance cost and potential safety risks of the product. Summary of the Invention

[0004] The object of the present invention is to provide a laser welding device for the connection of electrical control cabinet plates, so as to solve the problem that it is difficult to balance production capacity and effect in the welding of electrical cabinets.

[0005] The technical solution of the present invention is as follows: A laser welding device for the connection of electrical control cabinet plates includes a frame body and a cabinet body, and further includes two reinforcing devices slidably connected to the top of the frame body, a welding device slidably connected to the reinforcing devices, a support frame fixedly connected to the middle of the frame body, a shaft block rotatably connected to the top end of the support frame, a guide plate slidably connected inside the shaft block, a lock provided at the end of the guide plate away from the shaft block, a driven frame provided on one side of the guide plate, a driving frame slidably connected to the driven frame, a stepping driver fixedly connected to the support frame, a cylinder fixedly connected to one side of the support frame, two cylinders fixedly connected to the support frame, and a reinforcing buckle provided outside the end of the driving frame close to the lock. The cabinet body is placed between the driven frame and the driving frame. The two reinforcing devices are symmetric about the central axis of the frame body. The off-axis block is located between the two reinforcing devices. The lock is used to connect the guide plate and the driving frame. The driven frame is attached to the guide plate. One side of the driving frame is located inside the guide plate. The shaft block and the cylinder displace the cabinet body, and cooperate with the welding device to automatically weld the cabinet body.

[0006] Further, the welding joints on both sides of the cabinet body are divided into a first weld seam, a second weld seam and a third weld seam. The reinforcing device includes a sliding frame slidably connected to the top of the frame body, a round roller provided at the top end of the sliding frame, and a square rod fixedly connected to the sliding frame. The square rod is located between the round roller and the shaft block and below the round roller. The square rod is not tangent to the round roller.

[0007] Further, a convex strip is provided on one side of the driven frame. The cylinder is located directly below the convex strip. A groove block is provided at the end of the driving frame away from the shaft block. Convex shafts are provided on both sides of the groove block. Both the driven frame and the driving frame are L-shaped.

[0008] Further, a dovetail groove is provided on the shaft block. The guide plate includes a sliding plate slidably connected inside the dovetail groove, a straight bar fixedly connected to one side of the sliding plate, and an extension block fixedly connected to the end of the straight bar away from the shaft block. A guide groove opening is provided on the straight bar. The convex shaft is located inside the guide groove opening.

[0009] Further, the lock includes a sliding rod slidably connected inside the extension block, an arc-shaped strip fixed between the two sliding rods, a spring connected between the arc-shaped strip and the extension block, a convex block fixedly connected between the two sliding rods, and a magnetic sheet provided on the side of the extension block close to the driving frame.

[0010] Furthermore, the driven frame includes an initial position and a set position, and the driven frame is in a vertical state both when it is in the initial position and the set position. When the driven frame is in the set position, the first weld seam is coplanar with the top surface of the square rod. When the driven frame is in a horizontal state, the second weld seam is coplanar with the top surface of the square rod. When the driven frame is in the set position, the third weld seam is coplanar with the top surface of the square rod.

[0011] Furthermore, when the convex block is inside the groove block, the driving frame is fixed. A vertical plate is fixedly connected to the support frame. When the driven frame is in the set position, the arc-shaped strip is in contact with the vertical plate.

[0012] Furthermore, the midline of the shaft block does not coincide with the midline of the output end of the stepper driver. The stepper driver does not contact the sliding plate. When the driven frame is in the initial position, the stepper driver is located directly below it.

[0013] Furthermore, multiple reinforcing buckles are provided and are respectively connected to the shaft block and the driven frame. The output end of the stepper driver is connected to the shaft block. The output ends of the two cylinders are respectively fixedly connected to the corresponding reinforcing devices.

[0014] Furthermore, a transmission rail and a driving motor are fixedly connected to the sliding frame. The transmission rail is connected to the output end of the driving motor. The welder is slidably connected to the transmission rail.

[0015] Advantages of the present invention: Two welders can simultaneously perform synchronous welding on two weld seams of the cabinet body, shortening the welding time, making the two weld seams evenly heated, effectively avoiding the thermal deformation difference caused by sequential welding, with the weld seams being uniform and beautiful, and the structural strength being reliable. The position conversion is achieved by driving the driven frame through the shaft block, and at the same time, cooperating with the electric cylinder to drive the cabinet body to change its position, so that the weld seams at different positions of the cabinet body continuously coincide with the welding points of the welder, thereby forming a specific welding path to realize the automatic welding function with a simpler and more efficient mechanical structure.

[0016] Through the flexible transposition of the shaft block and the guide plate, and the high-precision sliding of the welder on the reinforcing device, the sizes and angle changes of the two C-shaped weld seams of cabinets with different specifications can be quickly adapted, and the welding task can be efficiently completed, significantly improving the applicability of the equipment in the small and medium batch production scenarios.

[0017] Through the synchronous operation of two welders, cooperating with the electric cylinder and the stepper driver with specific driving forces for the precise transposition of the cabinet body, the adaptation adjustment can be quickly completed with only simple operations, making the entire welding process more smooth and efficient. Through the preset path, the welding work can be quickly completed. Description of the Drawings

[0018] Figure 1Schematic diagram of the three-dimensional structure from the first perspective of the present invention; Figure 2 Schematic diagram of the overall structure of the present invention; Figure 3 Schematic diagram of the cabinet body structure of the present invention; Figure 4 Schematic diagram of the support frame structure of the present invention; Figure 5 Schematic diagram of the guide plate structure of the present invention; Figure 6 Schematic diagram of the driven frame structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged schematic diagram of location A in; Figure 8 State diagram of the driven frame of the present invention in the initial position; Figure 9 Structure diagram of the driven frame of the present invention in the horizontal state; Figure 10 State diagram of the driven frame of the present invention in the set position.

[0019] In the figure: 1. Frame body; 2. Cabinet body; 21. First weld seam; 22. Second weld seam; 23. Third weld seam; 3. Reinforcer; 31. Sliding frame; 32. Round roller; 33. Square rod; 301. Transmission rail; 302. Driving motor; 4. Welder; 5. Support frame; 51. Vertical plate; 6. Shaft block; 61. Dovetail groove; 7. Guide plate; 71. Slide plate; 72. Straight bar; 721. Guide notch; 73. Extension block; 731. Magnetic sheet; 8. Lock; 81. Slide bar; 82. Arc bar; 83. Spring; 84. Protrusion; 9. Driven frame; 91. Ridge; 10. Driving frame; 101. Groove block; 102. Convex shaft; 11. Stepping driver; 12. Electric cylinder; 13. Cylinder; 14. Reinforcing buckle. Detailed implementation manners

[0020] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the accompanying drawings of the specification.

[0021] Refer to Figures 1 - 9, for an embodiment of the present invention, there is provided a laser welding device and an electric device at the connection of the electric control cabinet plate, including a frame body 1 and a cabinet body 2, further including two reinforcing devices 3 slidably connected to the top of the frame body 1, a welding device 4 slidably connected to the reinforcing device 3, a support frame 5 fixedly connected to the middle of the frame body 1, a shaft block 6 rotatably connected to the top end of the support frame 5, a guide plate 7 slidably connected inside the shaft block 6, a lock 8 arranged at one end of the guide plate 7 away from the shaft block 6, a driven frame 9 arranged on one side of the guide plate 7, a driving frame 10 slidably connected to the driven frame 9, a stepping driver 11 fixedly connected to the support frame 5, an electric cylinder 12 fixedly connected to one side of the support frame 5, two cylinders 13 fixedly connected to the support frame 5, and a reinforcing buckle 14 arranged outside one end of the driving frame 10 close to the lock 8. The cabinet body 2 is placed between the driven frame 9 and the driving frame 10. The two reinforcing devices 3 are symmetrical about the central axis of the frame body 1. The shaft block 6 is located between the two reinforcing devices 3. The lock 8 is used to connect the guide plate 7 and the driving frame 10. The driven frame 9 is attached to the guide plate 7. One side of the driving frame 10 is located inside the guide plate 7. The shaft block 6 and the electric cylinder 12 displace the cabinet body 2, and cooperate with the welding device 4 to automatically weld the cabinet body 2. The two welding devices 4 weld one side of the cabinet body 2 respectively.

[0022] Specifically, the two reinforcing devices 3 use the frame body 1 as a guide rail. The support frame 5 fixed in the middle of the frame body 1 adopts a triangular stable structure to enhance the overall support performance. The stepping driver 11 is used to drive the shaft block 6 to rotate. The cylinder 13 controls the reinforcing device 3 to enable the reinforcing device 3 to achieve stable and precise linear motion, and can provide strong and stable clamping force. The stepping driver 11 rotates ninety degrees each time, thereby driving the shaft block 6 to rotate synchronously. The shaft block 6 drives the cabinet body 2 to rotate synchronously, and cooperates with the electric cylinder 12 to quickly rotate and lift the cabinet body 2 to a suitable position, so that different positions of the two welds are all aligned with the welding device 4 in sequence. The use of a single clamping of the cabinet body 2 can synchronously process, effectively avoiding the error accumulation caused by multiple positioning, ensuring that the weld width is consistent and the position is accurate. For the two C-shaped welds, the two welding devices 4 perform reciprocating linear synchronous operations, without the need to control the position of the welding device 4, shortening the production preparation time, and only simple operations are required to quickly complete the adaptation adjustment. The cylinder 13 controls the reinforcing device 3, and the reinforcing device 3 flexibly drives the welding device 4 to move. At the same time, it quickly clamps the cabinet body 2, making the entire welding process more smooth and efficient.

[0023] Refer to Figures 1 - 3 , the welding parts on both sides of the cabinet body 2 are divided into a first weld 21, a second weld 22 and a third weld 23. The reinforcing device 3 includes a sliding frame 31 slidably connected to the top of the frame body 1, a round roller 32 arranged at the top end of the sliding frame 31, a square rod 33 fixedly connected to the sliding frame 31. The square rod 33 is located between the round roller 32 and the shaft block 6, and is located below the round roller 32. The square rod 33 is not tangent to the round roller 32.

[0024] Among them, the welding point of the welder 4 is the end point of the output end of the welder 4 for welding.

[0025] Specifically, the welding joints on both sides of the cabinet body 2 are carefully divided into a first weld seam 21, a second weld seam 22 and a third weld seam 23. The three weld seams are continuously interconnected and are sequentially connected to form a complete C-shaped structure. The round roller 32 provided at the top of the sliding frame 31 is made of solid alloy steel and is wrapped with a silica gel material on the surface. The bottom surface of the cabinet body 2 is always in contact with the top surface of the square rod 33. Even after the cabinet body 2 rotates, the changed bottom surface of the cabinet body 2 is still in contact with the top surface of the square rod 33. The welding point of the welder 4 is located at the weld seam on the bottom surface of the cabinet body 2 to ensure accurate welding. The air cylinder 13 is used to control the reciprocating movement of the sliding frame 31, so as to reinforce both sides of the cabinet body 2 by using the two round rollers 32. The square rod 33 is located between the round roller 32 and the shaft block 6 and is below the round roller 32. The square rod 33 is not tangent to the round roller 32. Furthermore, there is a gap between the round roller 32 and the square rod 33, and the round roller 32 can clamp the cabinet body 2, so as to prevent the weld seam of the cabinet body 2 from coinciding with one side of the square rod 33, avoid welding interference, and at the same time facilitate the operator to intuitively judge the relative position and welding effect of the welder 4, improving the welding efficiency and effect.

[0026] Refer to Figures 1 - 6 , a convex strip 91 is provided on one side of the driven frame 9. The electric cylinder 12 is located directly below the convex strip 91. A groove block 101 is provided at one end of the driving frame 10 away from the shaft block 6. Convex shafts 102 are provided on both sides of the groove block 101. Both the driven frame 9 and the driving frame 10 are L-shaped.

[0027] It can be understood that the electric cylinder 12 is a modular product that integrates a servo motor and a lead screw, converts the rotational motion of the servo motor into a linear motion, uses an external module encoder, and precisely controls the position and speed of the lead screw by changing the number and frequency of pulse signals. It can be quickly integrated with existing equipment for easy control, precise position control, and precise thrust control, realizing a device with high-precision linear motion. Among them, the controller can select a common and stable PLC controller, such as the S7-200 SMART series PLC.

[0028] Specifically, both the driven frame 9 and the driving frame 10 are L-shaped. The U-shaped structure formed by the combination of the driven frame 9 and the driving frame 10 is adapted to the outer contour of the cabinet body 2 and the U-shaped welds on both sides. When the cabinet body 2 is placed therein, the U-shaped clamping structure can wrap and fix the cabinet body 2 from three directions, enabling the first weld 21, the second weld 22, and the third weld 23 on both sides of the cabinet body 2 to be precisely within the working range of the welding device 4, effectively reducing the welding error caused by positioning deviation. When the position of the driven frame 9 is adjusted up and down, the distance between the driven frame 9 and the driving frame 10 can be adjusted to make them closely fit the surface of the cabinet body 2, ensuring that cabinet bodies 2 of different specifications can be firmly clamped without the need to additionally replace complex tooling fixtures. By rotating the reinforcement buckle 14, point reinforcement of the cabinet body 2 can be achieved. Among them, the reinforcement buckle 14 is a commonly used component that generates linear movement by rotation to squeeze an object to achieve reinforcement.

[0029] Refer to Figures 2 - 7 , a dovetail groove 61 is formed on the shaft block 6. The guide plate 7 includes a sliding plate 71 slidably connected inside the dovetail groove 61, a straight bar 72 fixedly connected to one side of the sliding plate 71, and an extension block 73 fixedly connected to the end of the straight bar 72 far from the shaft block 6. A guide slot 721 is formed on the straight bar 72, and the convex shaft 102 is located inside the guide slot 721.

[0030] Among them, the distance between the rotation center of the shaft block 6 and the top surface of the square rod 33 can be ten centimeters. Since the driven frame 9 will not be adjusted, after the driven frame 9 rotates with the shaft block 6, the distance between the convex strip 91 on one side of it and the electric cylinder 12 is always five centimeters. Then, after the shaft block 6 rotates 180 degrees, compared with the initial position of the driven cabinet body 2, at this time, the distance between the top surface of the cabinet body 2 after rotating 180 degrees and the square rod 33 is two ten centimeters, that is, twenty centimeters. Then, it is necessary for the electric cylinder 12 to push the convex strip 91 to push the cabinet body 2 to the welding position. The length that the electric cylinder 12 needs to push is the length of the cabinet body 2 plus twenty-five centimeters. Therefore, it can be preset that the electric cylinder 12 additionally pushes out twenty-five centimeters when changing the pushing value, or manually input and increase this distance after replacing the cabinet body 2 of different sizes to ensure that the welding point of the welding device 4 fits the weld.

[0031] Specifically, the extension block 73 fixedly connected to the end of the straight bar 72 far from the shaft block 6 is intended to provide support for the driving frame 10 that rotates 180 degrees and at the same time provide an installation basis for the lock catch 8. During the operation of the equipment, the convex shaft 102 on the driving frame 10 is located inside the guide slot 721, and the guide slot 721 guides the convex shaft 102, thereby driving the cabinet body 2 to achieve precise transposition and ensuring the smooth progress of the entire welding process.

[0032] Refer to Figures 2 - 6, the driven frame 9 includes an initial position and a set position, and the driven frame 9 is in a vertical state both when it is in the initial position and the set position. When the driven frame 9 is in the set position, the first weld seam 21 is coplanar with the top surface of the square rod 33. When the driven frame 9 is in a horizontal state, the second weld seam 22 is coplanar with the top surface of the square rod 33. When the driven frame 9 is in the set position, the third weld seam 23 is coplanar with the top surface of the square rod 33.

[0033] Among them, coplanar means that the two are in the same vertical plane or horizontal plane. And the cabinet body 2 is located above the square rod 33, so the two are in the same vertical plane. At this time, if the thickness of the cabinet body 2 is subtracted, the weld seam completely coincides with the top surface of the square rod 33. Therefore, it is necessary to correspondingly adjust the height of the welding point of the welding device 4 with the thickness of the cabinet body 2 to make the welding point fit the weld seam.

[0034] Specifically, the driven frame 9 has two working states, namely the initial position and the set position, and remains in a vertical posture in both of these states. When the driven frame 9 is in the initial position, it serves as the default position in the standby state of the equipment, reserving space for the loading of the cabinet body 2 and facilitating the operator to quickly place the cabinet body 2. At this time, with the top surface of the square rod 33 as a reference, the shaft block 6 is set, so that the first weld seam 21 on the placed cabinet body 2 coincides with the welding point of the welding device 4, and the moving path of the welding device 4 coincides with the square rod 33, and the first weld seam 21 is precisely welded, effectively reducing the deviation of the welding position. Then, under the rotation of the shaft block 6, the state of the driven frame 9 changes. Whether it is the linear first weld seam 21, the second weld seam 22 at the turning point, or the third weld seam 23 on the other side, through the position transformation of the driven frame 9, the precise alignment of the welding device 4 and the weld seam can be realized, avoiding the welding problems caused by the difference in the weld seam position.

[0035] Refer to Figures 1 - 8 , the lock 8 includes a slide bar 81 slidably connected inside the extension block 73, an arc bar 82 fixed between the two slide bars 81, a spring 83 connected between the arc bar 82 and the extension block 73, a convex block 84 fixedly connected between the two slide bars 81, and a magnetic sheet 731 is arranged on one side of the extension block 73 close to the active frame 10.

[0036] When the convex block 84 is located inside the groove block 101, the active frame 10 is fixed. A vertical plate 51 is fixedly connected to the support frame 5. When the driven frame 9 is in the set position, the arc bar 82 is in contact with the vertical plate 51.

[0037] Specifically, the vertical plate 51 will exert extrusion on the arc-shaped strip 82. The arc-shaped strip 82 will displace synchronously with the sliding rod 81, causing the sliding rod 81 to move along the internal path of the extension block 73, thereby compressing the spring 83. At the same time, the sliding rod 81 will drive the bump 84 at the other end to move synchronously, causing the bump 84 to separate from the groove block 101. At this time, the up-and-down sliding of both the active frame 10 and the driven frame 9 will no longer be restricted. The electric cylinder 12 can be used to push the convex strip 91 to move the cabinet body 2 upward. When the electric cylinder 12 moves back, the cabinet body 2, the active frame 10, and the driven frame 9 will all move downward due to gravity. One end of the active frame 10 will be adsorbed to the magnetic sheet 731. When the shaft block 6 rotates, since the cabinet body 2 is on the outer side of the rotation of the shaft block 6, through the adsorption effect of the centrifugal force and the magnetic sheet 731, at the same time, when the shaft block 6 rotates, the spring 83 will quickly rebound to enable the bump 84 to quickly fix the groove block 101, preventing the cabinet body 2 from shifting, thus realizing the automatic reset of the components.

[0038] Refer to Figures 1 - 9 , the midline of the shaft block 6 does not coincide with the midline of the output end of the stepper driver 11. The stepper driver 11 does not contact the sliding plate 71. The sliding plate 71 is of the same length as the straight strip 7 ". At the same time, when the driven frame 9 is in the initial position, the stepper driver 11 is located directly below it, avoiding contact between components.

[0039] Refer to Figures 1 - 8 , multiple reinforcement buckles 14 are provided and are respectively connected to the shaft block 6 and the driven frame 9. The shaft block 6 uses the reinforcement buckles 14 to fix the overall guide plate 7, while the driven frame 9 fixes the active frame 10 through the reinforcement buckles 14. When the size needs to be adjusted, rotate both of them and pull the active frame 10. Since there is a lock buckle 8 connected between the active frame 10 and the overall guide plate 7, they will be adjusted synchronously. The cabinet body 2 can be placed on the driven frame 9, and the top of the active frame 10 can be fitted to the cabinet body 2 to quickly adjust the size change. The output end of the stepper driver 11 is connected to the shaft block 6, and the output ends of the two air cylinders 13 are respectively fixedly connected to the corresponding reinforcement devices 3 to achieve corresponding driving.

[0040] Specifically, after the cabinet body 2 is placed, the welder 4 completes the first welding. The air cylinder 13 will push the sliding frame 31 away from the cabinet body 2. At this time, the welder 4 moves back, the shaft block 6 rotates by ninety degrees, the air cylinder 13 pulls the two sliding frames 31 to move, and fixes the cabinet body 2 again. The welder 4 performs secondary welding. The air cylinder 13 pushes the two sliding frames 31 to move again. Subsequently, the shaft block 6 continues to rotate by ninety degrees. Subsequently, the electric cylinder 12 is started to push the cabinet body 2 upward and then stops. The air cylinder 13 pulls the sliding frame 31 again to fix the cabinet body 2, thereby completing three weldings. After the sliding frame 31 moves away from the cabinet body 2, after the electric cylinder 12 contracts, the shaft block 6 rotates back, rotates the corresponding reinforcement buckle 14, and replaces the cabinet body 2. Among them, the controller can be a foot-operated switch, which is convenient for control and placement at different positions.

[0041] Refer to Figures 1 - 9, a transmission rail 301 and a driving motor 302 are fixedly connected to the sliding carriage 31. The transmission rail 301 is connected to the output end of the driving motor 302. The welder 4 is slidably connected to the transmission rail 301. The driving motor 302 drives the ball screw inside the transmission rail 301, and the welder 4 is sleeved outside the ball screw, so that the welder 4 moves, enabling the welder 4 to weld the cabinet body 2 at a constant speed, ensuring the stability of the welding heat input, effectively avoiding common quality problems such as weld offset, undercut, and weld bead, significantly improving the product qualification rate, and effectively guaranteeing the protection performance of the cabinet body 2.

[0042] The working principle of the present invention is as follows: First, the operator places the cabinet body 2 between the driven frame 9 and the driving frame 10 and fixes it through the reinforcement buckle 14. At this time, the equipment is started, and two cylinders 13 respond. The output ends push the sliding frame 31, driving the round roller 32 and the square rod 33 to approach the cabinet body 2, clamping the cabinet body 2 from both sides. At the same time, the welder 4 on the sliding frame 31 approaches the cabinet body 2. At this time, the driving motor 302 on the sliding frame 31 drives the ball screw inside the transmission rail 301, driving the welder 4 to move along the trajectory determined by the top surface of the square rod 33 to weld the first weld seam 21 at a constant speed. After the welding is completed, the cylinder 13 first pulls the sliding frame 31 away from the cabinet body 2, and the welder 4 moves back. The shaft block 6 is driven by the stepper driver 11 to rotate by 90 degrees, and the originally vertical driven frame 9 is turned into a horizontal state, so that the second weld seam 22 of the cabinet body 2 is coplanar with the top surface of the square rod 33 on the reinforcement device 3. During this process, the electric cylinder 12 remains in a standby state. Subsequently, the cylinder 13 pulls the sliding frame 31 for the second time to reinforce the cabinet body 2. After using the welder 4 to complete the welding of the second weld seam 22, the cylinder 13 pushes the sliding frame 31 again to move the welder 4 away from the cabinet body 2, and the shaft block 6 continues to rotate by 90 degrees and returns to the vertical state. At this time, the cabinet body 2 rotates by 180 degrees along with the shaft block 6. The vertical plate 51 will squeeze the arc-shaped strip 82, and the arc-shaped strip 82 will displace synchronously with the sliding rod 81, causing the sliding rod 81 to move along the internal path of the extension block 73, thereby compressing the spring 83. At the same time, the sliding rod 81 will drive the convex block 84 at the other end to move synchronously, separating the convex block 84 from the groove block 101. At this time, the up and down sliding of the driving frame 10 and the driven frame 9 will no longer be restricted. Immediately afterwards, the electric cylinder 12 is started, and its output end pushes the convex strip 91 on one side of the driven frame 9 to push the cabinet body 2 upwards. Since the distance between the rotation center of the shaft block 6 and the top surface of the square rod 33 is 10 cm, after rotating 180 degrees, the distance between the top surface of the cabinet body 2 and the square rod 33 becomes 20 cm. Therefore, the pushing length of the electric cylinder 12 is the length of the cabinet body 2 plus a reserved adjustment distance of 25 cm to ensure that the cabinet body 2 is accurately in place. The cylinder 13 pulls the sliding frame 31 again to fix the cabinet body 2, and the welder 4 performs the third welding on the third weld seam 23. After the entire welding process is completed, the electric cylinder 12 contracts, and the cabinet body 2, the driving frame 10, and the driven frame 9 move downward due to gravity. The shaft block 6 is driven to start rotating back. Under the action of the centrifugal force and the adsorption effect of the magnetic sheet 731, the driving frame 10 remains stable. At the same time, the spring 83 rebounds, and the convex block 84 is reinserted into the groove block 101 to complete the automatic reset of the components. The operator rotates the reinforcement buckle 14 on the driving frame 10 to remove the welded cabinet body 2 and place a new cabinet body 2 to start the next round of welding work.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. A laser welding device for the connection of electrical control cabinet plates, comprising a frame body (1) and a cabinet body (2), characterized in that: It also includes two reinforcing devices (3) slidably connected to the top of the frame body (1), a welding device (4) slidably connected to the reinforcing device (3), a support frame (5) fixedly connected to the middle of the frame body (1), a shaft block (6) rotatably connected to the top end of the support frame (5), a guide plate (7) slidably connected inside the shaft block (6), a lock (8) arranged at one end of the guide plate (7) away from the shaft block (6), a driven frame (9) arranged on one side of the guide plate (7), a driving frame (10) slidably connected to the driven frame (9), a stepping driver (11) fixedly connected to the support frame (5), a cylinder (12) fixedly connected to one side of the support frame (5), two cylinders (13) fixedly connected to the support frame (5), and a reinforcing buckle (14) arranged outside one end of the driving frame (10) close to the lock (8). The cabinet body (2) is placed between the driven frame (9) and the driving frame (10). The two reinforcing devices (3) are symmetric about the central axis of the frame body (1). The off-axis block (6) is located between the two reinforcing devices (3). The lock (8) is used to connect the guide plate (7) and the driving frame (10). The driven frame (9) is in contact with the guide plate (7). One side of the driving frame (10) is located inside the guide plate (7). The shaft block (6) and the cylinder (12) displace the cabinet body (2), and cooperate with the welding device (4) to automatically weld the cabinet body (2).

2. The laser welding device for the connection of electrical control cabinet plates according to claim 1, characterized in that: The welding joints on both sides of the cabinet body (2) are divided into a first weld seam (21), a second weld seam (22) and a third weld seam (23). The reinforcing device (3) includes a sliding frame (31) slidably connected to the top of the frame body (1), a round roller (32) arranged at the top end of the sliding frame (31), and a square rod (33) fixedly connected to the sliding frame (31). The square rod (33) is located between the round roller (32) and the shaft block (6) and below the round roller (32). The square rod (33) is not tangent to the round roller (32).

3. The laser welding device for the connection of electrical control cabinet plates according to claim 2, characterized in that: One side of the driven frame (9) is provided with a convex strip (91). The cylinder (12) is located directly below the convex strip (91). One end of the driving frame (10) away from the shaft block (6) is provided with a groove block (101). Convex shafts (102) are arranged on both sides of the groove block (101). Both the driven frame (9) and the driving frame (10) are L-shaped.

4. A laser welding device for the connection between electrical control cabinet plates according to claim 3, characterized in that: A dovetail groove (61) is formed on the shaft block (6). The guide plate (7) includes a sliding plate (71) slidably connected inside the dovetail groove (61), a straight bar (72) fixedly connected to one side of the sliding plate (71), and an extension block (73) fixedly connected to one end of the straight bar (72) away from the shaft block (6). A guide notch (721) is formed on the straight bar (72). The convex shaft (102) is located inside the guide notch (721).

5. The laser welding device for the connection of electrical control cabinet plates according to claim 4, characterized in that: The latch (8) includes a slide bar (81) slidably connected inside the extension block (73), an arc-shaped bar (82) fixed between the two slide bars (81), a spring (83) connected between the arc-shaped bar (82) and the extension block (73), and a convex block (84) fixedly connected between the two slide bars (81). A magnetic sheet (731) is provided on one side of the extension block (73) close to the active frame (10).

6. The laser welding device for the connection of electrical control cabinet plates according to claim 2, characterized in that: The driven frame (9) includes an initial position and a set position, and the driven frame (9) is in a vertical state both when it is in the initial position and the set position. When the driven frame (9) is in the set position, the first weld seam (21) is coplanar with the top surface of the square rod (33). When the driven frame (9) is in a horizontal state, the second weld seam (22) is coplanar with the top surface of the square rod (33). When the driven frame (9) is in the set position, the third weld seam (23) is coplanar with the top surface of the square rod (33).

7. A laser welding device for the connection of electrical control cabinet plates according to claim 5, characterized in that: When the convex block (84) is inside the groove block (101), it fixes the active frame (10). A vertical plate (51) is fixedly connected to the support frame (5). When the driven frame (9) is in the set position, the arc-shaped bar (82) is in contact with the vertical plate (51).

8. The laser welding device for the connection of electrical control cabinet plates according to claim 1, characterized in that: The midline of the shaft block (6) does not coincide with the midline of the output end of the stepper driver (11). The stepper driver (11) does not contact the slide plate (71). When the driven frame (9) is in the initial position, the stepper driver (11) is located directly below it.

9. The laser welding device for the connection of electrical control cabinet plates according to claim 1, characterized in that: A plurality of reinforcement buckles (14) are provided and are respectively connected to the shaft block (6) and the driven frame (9). The output end of the stepper driver (11) is connected to the shaft block (6). The output ends of the two cylinders (13) are respectively fixedly connected to the corresponding strengtheners (3).

10. The laser welding device for the connection of electrical control cabinet plates according to claim 2, characterized in that: A transmission rail (301) and a drive motor (302) are fixedly connected to the sliding frame (31). The transmission rail (301) is connected to the output end of the drive motor (302). The welder (4) is slidably connected to the transmission rail (301).

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