Copper bar laser welding equipment for power distribution cabinet
By using inclined rubber blocks and clamping mechanisms in copper busbar welding equipment, combined with multi-directional constraints from limit pins and magnets, the deformation problem caused by high temperatures during copper busbar welding was solved, achieving precise docking and efficient welding, and improving the accuracy and reliability of copper busbar welding.
Patent Information
- Application Number
- CN202511837228.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-02-10
AI Technical Summary
In the existing process of welding vertically bent copper busbars, the local high temperature generated during welding can easily cause the release of thermal stress at the bending point of the copper busbar, resulting in springback deformation. It is difficult to maintain the preset bending shape stably, which affects the welding accuracy and reliability.
An inclined elastic rubber block is used to apply a downward pre-pressure to the copper busbar. Combined with the bidirectional clamping mechanism of the clamping plate and the clamping seat, the repulsive force between the like poles of the limit pin and the magnet is used to form a multi-directional constraint to avoid deformation caused by high temperature. The laser welding head realizes welding from top to bottom and grinding at the same time to avoid secondary processing.
It achieves precise and centered docking of copper busbars, avoids deformation caused by local high temperature, improves welding accuracy and reliability, simplifies the processing flow, and enhances the convenience of equipment and welding quality.
Smart Images
Figure CN121491533A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of copper busbar welding technology, and in particular to a laser welding device for copper busbars used in power distribution cabinets. Background Technology
[0002] Copper busbars used in distribution cabinets are long, strip-shaped conductive components made of high-purity copper. Their surfaces are often tin-plated or zinc-plated for corrosion protection. Given the compact internal space of distribution cabinets and the dispersed installation locations of various electrical components with height differences and horizontal spacing, copper busbars are often processed into bends such as Z-shapes to maximize space utilization, in order to accurately match the interface positions of different components, shorten the conductive path, and avoid component interference. However, single-specification bent copper busbars are often difficult to adapt to the connection requirements of long distances or complex scenarios. Furthermore, multi-section copper busbars can be combined to flexibly meet the conductivity requirements of different power levels. Therefore, welding is required to connect multiple sections of copper busbars.
[0003] In the current process of butt welding of vertically bent copper busbars, the localized high temperature generated during welding can easily trigger the release of thermal stress at the bend, leading to springback deformation at the bend. However, traditional welding methods lack a precise pre-pressure alignment mechanism for the butt joint of the copper busbars and a dynamic autonomous limiting structure to adapt to irregular contours. They cannot offset the springback stress caused by high temperature through multi-directional constraints, making it difficult to stably maintain the preset bending shape of the vertically bent copper busbars. This exacerbates the negative impact of high-temperature deformation on the butt joint fitting accuracy and product dimensional stability, ultimately resulting in problems such as bending shape distortion and excessive butt joint gaps after welding, seriously affecting subsequent assembly accuracy and reliability.
[0004] To address the aforementioned technical deficiencies, a solution is proposed. This solution involves applying a downward pre-pressure to the copper busbar using an inclined elastic rubber block. This achieves precise and flush alignment of the copper busbar's mating sides, while automatically centering the copper busbar during subsequent movement. Furthermore, a bidirectional clamping mechanism is formed by the linkage of the clamping plate and the clamping seat on the mating plate. The limiting pins within the clamping seat utilize the elastic push of repulsive magnetic poles to autonomously form irregular profiles for different vertical bends of the copper busbar during clamping. Multiple unshrinked limiting pins distributed on both sides of the copper busbar's bend maintain its shape, thereby preventing deformation of the copper busbar's bending shape due to localized high temperatures. Summary of the Invention
[0005] The purpose of this invention is to provide a laser welding device for copper busbars in power distribution cabinets to solve the aforementioned technical defects.
[0006] The objective of this invention can be achieved through the following technical solution: a laser welding device for copper busbars in a power distribution cabinet, comprising a base and a movable base located on top of the base. The top of the movable base is provided with a docking assembly for fixing the copper busbars to prevent deformation. The docking assembly includes two sets of fixed platforms fixedly connected to the top of the movable base, and a fixed plate is fixedly connected to the top of the fixed platform. The top of the fixed plate is slidably connected to a docking plate via a slide rail. Clamping plates and clamping seats are respectively provided on both sides of the top of the docking plate. An initial pressure assembly for fixing the copper busbars is provided on one side of the top of the fixed plate.
[0007] Preferably, the top of the base is slidably connected to the movable seat via an installed slide rail, and the top of the base is fixedly connected to an installation column and an installation plate. A lead screw that is threadedly connected to the movable seat is rotatably connected between the installation column and the installation plate, and a motor that drives the lead screw to rotate is installed on the installation plate via bolts.
[0008] Preferably, the top of the mounting column is fixedly connected to a limiting seat that is slidably connected thereto by a spring. The top of the limiting seat has a groove that extends through one side. A lower grinding disc is rotatably connected in the groove. A second motor that drives the lower grinding disc to rotate is installed in the recessed part of the outer wall of the limiting seat. A collection box communicating with the groove is detachably installed on one side of the limiting seat.
[0009] Preferably, the clamping plate is fixedly connected to the top side of the docking plate, and the bottom of the clamping seat is fixedly connected to two sets of sliding rods that are slidably connected to the docking plate. The clamping seat has several movable cavities on one side of the clamping plate, and each movable cavity is provided with a limit pin.
[0010] Preferably, a magnet is fixedly installed on the end face of the movable cavity, a magnet is fixedly installed on the limiting pin and slidably connected to the movable cavity, and the same magnetic poles of the magnet and the magnet are arranged opposite to each other. A limiting plate that is slidably connected to the limiting pin is fixedly installed on one side of the clamp.
[0011] Preferably, an L-shaped plate is slidably connected to the fixed platform, and an electric push rod is fixedly installed between the L-shaped plate and the fixed platform. A linkage plate that is fixedly connected to the L-shaped plate is slidably connected to the clamp via an installed slide rail.
[0012] Preferably, the initial pressure assembly includes a push column slidably connected to a fixed plate, an L-shaped pressure plate is installed on the top of the push column, an inclined elastic rubber block is fixedly connected to the bottom of the L-shaped pressure plate, a guide pin is installed at the bottom of the push column, and an L-shaped guide groove is provided on the L-shaped plate that is slidably connected to the guide pin.
[0013] Preferably, an upper guide post and a lower guide post are fixedly connected to the L-shaped pressure plate, and two sets of L-plates that are slidably connected to both sides of the push post are fixedly connected to the top of the fixed plate. The L-plates are provided with L-shaped guide grooves that are slidably connected to the upper guide post and the lower guide post. The lower guide post is rotatably connected to the push post.
[0014] Preferably, the bottom of the docking plate is fixedly connected to an ear plate, and a tension spring is fixedly connected between the ear plate and the fixing plate.
[0015] Preferably, an F-shaped frame is fixedly connected to the top of the base, and laser welding heads distributed in a vertical mirror image are fixedly installed on the F-shaped frame. A square rod is slidably connected to the F-shaped frame, and a stop plate and a chip suction hood are fixedly connected to the top and bottom sides of the square rod, respectively. An upper grinding disc is rotatably installed inside the chip suction hood, and a motor for driving the upper grinding disc to rotate is installed on the outer wall of the chip suction hood. A chip suction pipe is connected to the chip suction hood.
[0016] The beneficial effects of this invention are as follows: (1) The L-shaped pressure plate of the present invention adopts a combination of deflection and horizontal pressing, combined with the inclined elastic rubber block to apply the inclined downward pre-pressure to the copper busbar, so as to achieve the flatness and precise docking of the copper busbar docking side. At the same time, during the subsequent movement of the copper busbar, the copper busbar is automatically centered and docked. The clamping plate and clamping seat on the docking plate are linked to form a two-way clamping mechanism. The limiting pin in the clamping seat is elastically pushed by the repulsion of the same pole of the magnet. During the clamping process, it can autonomously form the irregular contour of different vertical bending copper busbars. Multiple unshrinked limiting pins are distributed on both sides of the copper busbar bending point to maintain the state, thereby avoiding the problem of deformation of the copper busbar bending shape due to local high temperature. (2) The laser welding head of the present invention, which is distributed in a mirror image, can complete upper welding, lower welding or double-sided welding as needed. After welding, the copper busbar contacts the chip suction cover and automatically lifts it. The upper grinding disc simultaneously flushes the welding protrusion on the top surface. Before unloading, the limiting seat is lowered by the pressure of the welded copper busbar, and the lower grinding disc completes the bottom surface grinding. Therefore, there is no need for secondary fixing and processing, which improves the convenience of the overall processing of the copper busbar. At the same time, the chip suction pipe and the collection box collect the upper and lower grinding debris simultaneously to avoid impurities affecting the welding quality and equipment operation. Attached Figure Description
[0017] The invention will now be further described with reference to the accompanying drawings; Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the installation of the movable plate of the present invention; Figure 3 This is a schematic diagram showing the connection between the mounting column and the limiting seat of the present invention; Figure 4This is a schematic diagram of the F-type frame of the present invention; Figure 5 This is a schematic diagram of the docking component of the present invention; Figure 6 This is a schematic diagram showing the disassembled fixing platform and L-shaped plate of the present invention; Figure 7 This is a schematic diagram of the fit between the mating plate and the clamp of the present invention; Figure 8 This is a schematic diagram of the structure of the clamp of the present invention; Figure 9 This is a schematic diagram of the structure of the L-plate of the present invention; Figure 10 This is a schematic diagram of the cooperation between the push column and the L-shaped pressure plate of the present invention.
[0018] Legend: 1. Base; 11. Movable base; 12. Mounting column; 13. Lead screw; 14. Spring; 15. Limiting seat; 16. Lower grinding disc; 17. Collection box; 18. F-shaped frame; 19. Laser welding head; 110. Square rod; 111. Chip suction hood; 112. Upper grinding disc; 2. Docking assembly; 21. Fixing platform; 22. Fixing plate; 23. Docking plate; 24. Clamping plate; 25. Clamping seat; 26. Slide rod; 27. Limiting pin; 28. Magnet one; 29. Magnet two; 210. Limiting plate; 211. L-shaped plate; 212. Electric push rod; 213. Linkage plate; 214. L-shaped guide groove one; 215. Tension spring; 3. Initial pressure assembly; 31. Push column; 32. L-shaped pressure plate; 33. Elastic rubber block; 34. Guide pin; 35. Upper guide column; 36. Lower guide column; 37. L-plate; 38. L-shaped guide groove II. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0020] Example 1: Please refer to Figures 1-8 As shown, the problem that existing technologies cannot offset the springback stress caused by high temperature through multi-directional constraints, making it difficult to stably maintain the preset bending shape of the vertically bent copper busbar, can be solved by the following solution: This embodiment of a copper busbar laser welding device for a power distribution cabinet includes a base 1 and a movable base 11 located on top of the base 1. The top of the movable base 11 is provided with a docking assembly 2 for fixing the copper busbar to prevent deformation. The docking assembly 2 includes two sets of fixed platforms 21 fixedly connected to the top of the movable base 11, and a fixed plate 22 is fixedly connected to the top of the fixed platform 21. The top of the fixed plate 22 is slidably connected to a docking plate 23 via a slide rail. A clamping plate 24 and a clamping seat 25 are respectively provided on both sides of the top of the docking plate 23. A plate-shaped or bent copper busbar is placed on the docking plate 23. The copper busbar is clamped and fixed by the movement of the clamp 25 and the clamp 24. Then, the copper busbar is docked by the relative movement of the two sets of docking plates 23. A pre-pressing component 3 for fixing the copper busbar is provided on one side of the top of the fixing plate 22.
[0021] The top of the base 1 is slidably connected to the movable seat 11 via an installed slide rail. The top of the base 1 is fixedly connected to the mounting column 12 and the mounting plate. The mounting column 12 and the mounting plate are rotatably connected to the movable seat 11 via a threaded screw 13. The mounting plate is equipped with a motor that drives the screw 13 to rotate via bolts. The motor drives the screw 13 to rotate, and the screw 13 pushes the movable seat 11 to carry two sets of clamped copper busbars horizontally, thus moving the copper busbars to the welding station to complete the mobile welding process.
[0022] The top of the mounting column 12 is fixedly connected to the limiting seat 15 which is slidably connected to it by the spring 14. The limiting seat 15 is set for the plate-shaped or square-shaped upright curved copper busbar to be placed on the docking plate 23. The initial positioning treatment of the copper busbar docking end lays the foundation for subsequent center docking and for flat grinding after welding. An inclined surface is opened on one side of the top of the limiting seat 15. Combined with the elastic sliding connection of the limiting seat 15 on the mounting column 12, it is used to force the limiting seat 15 to automatically descend when the copper busbar is welded and the moving seat 11 is reset and moved, so as to realize the anti-interference unloading of the welded copper busbar. The top of the limiting seat 15 has a groove that runs through one side. A lower grinding disc 16 is rotatably connected in the groove. The top of the lower grinding disc 16 is flush with the top of the limiting seat 15. A motor 2 that drives the lower grinding disc 16 to rotate is installed in the recess of the outer wall of the limiting seat 15. A collection box 17 that communicates with the groove is detachably installed on one side of the limiting seat 15. The bottom of the groove is inclined, and its lowest point is located at the collection box 17 so that the debris can automatically enter the collection box 17. During the horizontal reset movement of the movable seat 11, the copper busbar welding area contacts the inclined surface on one side of the top of the limiting seat 15, causing the limiting seat 15 to move downward. The top of the limiting seat 15 contacts the unwelded area of the copper busbar. Under the drive of the second motor, the grinding disc 16 rotates and grinds the welding protrusion on the bottom surface until it is flush. The grinding debris falls into the groove and slides into the collection box 17 for collection. The collection box 17 is connected to the limiting seat 15 with bolts, thereby facilitating disassembly and cleaning of the collected debris.
[0023] The clamping plate 24 is fixedly connected to the top side of the docking plate 23. The bottom of the clamping seat 25 is fixedly connected to two sets of sliding rods 26 that are slidably connected to the docking plate 23. The clamping seat 25 slides on the top of the docking plate 23 through the sliding rods 26 for clamping copper busbars of different widths. Several movable cavities are opened on one side of the clamping plate 24 on the clamping seat 25. Each movable cavity is provided with a limit pin 27. After the clamping seat 25 and the clamping plate 24 clamp the copper busbar, the state is maintained by the distribution of multiple uncontracted limit pins 27 on the top and bottom sides of the plate-shaped or bent copper busbar, so as to avoid the problem of deformation of the copper busbar due to local high temperature.
[0024] A magnet 28 is fixedly installed on the end face of the movable cavity, and a magnet 29 is fixedly installed on the limiting pin 27 and slidably connected to the movable cavity. The same magnetic poles of magnet 28 and magnet 29 are arranged opposite each other. The limiting pin 27 in the movable cavity forms an independent elastic telescopic unit by means of the repulsive force between the same poles of magnet 28 and magnet 29. During the clamping process, the limiting pin 27 can be automatically retracted in some areas according to the irregular contour of the bent copper busbar. When the clamping seat 25 and the clamping plate 24 are far apart, the limiting pin 27 automatically extends and resets. A limiting plate 210 is fixedly installed on one side of the clamping seat 25 and slidably connected to the limiting pin 27 to prevent magnet 29 from separating from the movable cavity by the repulsive force between it and magnet 28.
[0025] An L-shaped plate 211 is slidably connected to the fixed platform 21, and an electric push rod 212 is fixedly installed between the L-shaped plate 211 and the fixed platform 21. A linkage plate 213, which is fixedly connected to the L-shaped plate 211, is slidably connected to the clamp 25 via an installed slide rail. The electric push rod 212 retracts to drive the L-shaped plate 211 to move, which, combined with the linkage plate 213, drives the clamp 25 to move closer to the clamp 24. The sliding connection between the linkage plate 213 and the clamp 25 avoids interference with the movement of the docking plate 23.
[0026] The bottom of the docking plate 23 is fixedly connected to an ear plate, and a tension spring 215 is fixedly connected between the ear plate and the fixed plate 22 for the reset movement after the docking plate 23 moves close to the limit seat 15.
[0027] An F-shaped frame 18 is fixedly connected to the top of the base 1, and laser welding heads 19 distributed vertically are fixedly installed on the F-shaped frame 18. The two sets of copper busbars are connected and pass between the two sets of laser welding heads 19 distributed vertically. Depending on the welding requirements and the thickness of the copper busbars, they can be moved for upper welding, lower welding or double-sided welding. A square rod 110 is slidably connected to the F-shaped frame 18 for the vertical sliding of the chip suction hood 111. The top and bottom sides of the square rod 110 are respectively fixedly connected to a stop plate and the chip suction hood 111. The stop plate is used to limit the minimum height of the chip suction hood 111 after it descends. An upper grinding disc 112 is rotatably installed inside the chip suction hood 111. The bottom of the upper grinding disc 112 is flush with the bottom of the chip suction hood 111. A motor 3 is installed on the outer wall of the chip suction hood 111 to drive the upper grinding disc 112 to rotate. A chip suction pipe is connected to the chip suction hood 111. An inclined surface is opened on one side of the bottom of the chip suction hood 111. The welded copper busbar passes through the bottom of the chip suction hood 111. The inclined surface on one side of the bottom of the chip suction hood 111 causes the chip suction hood 111 to contact the copper busbar and automatically lift up. The motor 3 drives the upper grinding disc 112 to rotate. Combined with the unwelded area of the copper busbar contacted by the bottom of the chip suction hood 111, the welded protrusion on the top surface is ground flat. During the grinding process, the chip is extracted through the chip suction pipe.
[0028] Example 2: Please refer to Figure 5 , Figure 6 , Figure 9 and Figure 10 As shown, the lack of a precise pre-clamping alignment mechanism for copper busbar mating ends can be solved by the following solutions: In this embodiment, the initial pressure component 3 includes a push column 31 that is slidably connected to the fixed plate 22. An L-shaped pressure plate 32 is installed on the top of the push column 31. An inclined elastic rubber block 33 is fixedly connected to the bottom of the L-shaped pressure plate 32. The elastic rubber block 33 is made of high temperature resistant material. A guide pin 34 is installed at the bottom of the push column 31. An L-shaped guide groove 214 that is slidably connected to the guide pin 34 is provided on the L-shaped plate 211. L-shaped guide groove 214 includes a horizontal section and an inclined section on one side that slopes upward. The copper busbar is placed on the mating plate 23, and the welding side and the adjacent side of the copper busbar respectively abut against the limiting seat 15 and the clamping plate 24. The electric push rod 212 retracts and drives the L-shaped plate 211 to move. Combined with the sliding connection between the guide pin 34 and the L-shaped guide groove 214, the guide pin 34 is guided by the inclined section on the L-shaped guide groove 214, causing the push column 31 to move downward. The push column 31 pulls the L-shaped pressure plate 32 downward. The elastic rubber block 33 abuts against the copper busbar and deforms, applying a downward squeezing force to the copper busbar. By applying a downward compressive force to the copper busbar and combining the sliding connection between the docking plate 23 and the fixed plate 22, the welding side of the copper busbar further contacts the limiting seat 15 until the guide pin 34 enters the horizontal section from the inclined section on the L-shaped guide groove 214, maintaining the initial clamping effect. The screw 13 pushes the moving seat 11 to carry the two sets of clamped copper busbars horizontally until the welding side of the copper busbar separates from the limiting seat 15. Then, by using the deformation elastic rubber block 33 to apply a downward compressive force to the top of the copper busbar, the two sets of docking plates 23 move relative to each other and stretch the tension spring 215, causing the two sets of copper busbars to automatically dock.
[0029] An upper guide post 35 and a lower guide post 36 are fixedly connected to the L-shaped pressure plate 32. Two sets of L-plates 37 that are slidably connected to both sides of the push post 31 are fixedly connected to the top of the fixed plate 22. An L-shaped guide groove 38 that is slidably connected to the upper guide post 35 and the lower guide post 36 is provided on the L-plate 37. The L-shaped guide groove 38 includes a vertical section and an inclined section with its top tilted upward. The lower guide post 36 is rotatably connected to the push post 31. The copper busbar is placed in front of the docking plate 23. The upper guide post 35 is located in the inclined section, and the lower guide post 36 is located in the vertical section, ensuring that the elastic rubber block 33 is in an approximately vertical state, which facilitates the placement and removal of the copper busbar before and after welding. During the process of the pushing post 31 pulling the L-shaped pressure plate 32 down, the upper guide post 35 enters the vertical section from the inclined section on the L-shaped guide groove 38, causing the L-shaped pressure plate 32 to deflect to a horizontal state. Then, as the L-shaped pressure plate 32 moves down in a horizontal state, the elastic rubber block 33 comes into contact with the copper busbar to complete the initial clamping.
[0030] Example 3: Please refer to Figures 1-10 As shown, the present invention also proposes a method for using a laser welding device for copper busbars in a power distribution cabinet, comprising the following steps: Step 1: An external robotic arm grasps a plate-shaped or bent copper busbar and places it on the docking plate 23. The welding side and the adjacent side of the copper busbar abut against the limiting seat 15 and the clamping plate 24 respectively. The electric push rod 212 retracts, driving the L-shaped plate 211 to move. Combined with the sliding connection between the guide pin 34 and the L-shaped guide groove 214, the guide pin 34 is guided by the inclined section on the L-shaped guide groove 214, causing the push column 31 to move downward. During the process of the push column 31 pulling the L-shaped pressure plate 32 downward, the upper guide column 35 enters the vertical section from the inclined section on the L-shaped guide groove 38, causing the L-shaped pressure plate 32 to deflect to a horizontal state. Then, as the L-shaped pressure plate 32 moves downward in a horizontal state, the elastic rubber block 33 abuts against the copper busbar, completing the initial clamping. The robotic arm separates from the copper busbar. Step 2: As the L-shaped plate 211 continues to move horizontally, during the process of the guide pin 34 moving from the inclined section on the L-shaped guide groove 214 into the horizontal section, the elastic rubber block 33 abuts against the copper busbar and deforms, applying a downward squeezing force to the copper busbar. Combined with the sliding connection between the docking plate 23 and the fixing plate 22, the welding side of the copper busbar further abuts against the limiting seat 15, strengthening the initial positioning after placement, until the guide pin 34 moves from the inclined section on the L-shaped guide groove 214 into the horizontal section, maintaining the initial clamping effect. While the L-shaped plate 211 moves, the clamp 25 is moved synchronously through the linkage plate 213. The ends of some of the limiting pins 27 on the clamp 25 first abut against the copper busbar, and then slide relative to the clamp 25 and are stored in the corresponding movable cavity until the clamp 25 side abuts against the copper busbar and the clamping plate 24, and the copper busbar is clamped and fixed for a second time. The state is maintained by the distribution of multiple unretracted limiting pins 27 on the top and bottom sides of the plate-shaped or bent copper busbar, so as to avoid the problem of deformation of the copper busbar due to local high temperature. Step 3: The motor drives the lead screw 13 to rotate. The lead screw 13 pushes the moving seat 11 to carry the two sets of clamped copper busbars horizontally until the welding side of the copper busbars separates from the limiting seat 15. Then, the deformation elastic rubber block 33 applies an inclined downward squeezing force to the top of the copper busbars, causing the two sets of docking plates 23 to move relative to each other and stretch the tension spring 215, so that the two sets of copper busbars automatically dock. The two sets of docked copper busbars pass between the two sets of laser welding heads 19 that are distributed vertically and horizontally. Depending on the welding requirements and the thickness of the copper busbars, the upper welding, lower welding or double-sided welding is performed. Step 4: When completing the top welding or double-sided welding, the copper busbar to be welded passes through the bottom of the chip suction cover 111. The inclined surface on one side of the bottom of the chip suction cover 111 causes the chip suction cover 111 to contact the copper busbar and automatically lift up. The motor drives the upper grinding disc 112 to rotate. Combined with the bottom of the chip suction cover 111 contacting the unwelded area of the copper busbar, the top surface welding protrusion is ground flat. During the grinding process, the chip is extracted through the chip suction pipe. Step 5: When completing the bottom welding or double-sided welding, during the horizontal reset movement of the moving seat 11 driven by the lead screw 13 of motor one, the copper busbar welding area contacts the inclined surface on one side of the top of the limit seat 15, causing the limit seat 15 to move downward. The top of the limit seat 15 contacts the unwelded area of the copper busbar. Motor two drives the lower grinding disc 16 to rotate, grinding the bottom welding protrusion to make it flush. The grinding debris falls into the groove and slides into the collection box 17 for collection. Step Six: After the copper busbar is separated from the limiting seat 15, the limiting seat 15 rises and resets under the compression of the spring 14. The electric push rod 212 pushes the L-shaped plate 211 away from the fixed table 21. The clamp 25 separates from the copper busbar first, and the elastic rubber block 33 rises and deflects. Under the tension of the tension spring 215, the two sets of docking plates 23 move away from each other and reset. The external robot unloads the welded and polished copper busbar from the top of the two sets of docking plates 23. Then, the motor drives the two sets of docking plates 23 to move to both sides of the limiting seat 15 to repeat the process of copper busbar feeding, positioning, docking, welding and polishing.
[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A laser welding device for copper busbars in a power distribution cabinet, comprising a base (1) and a movable base (11) located on top of the base (1), characterized in that, The top of the movable base (11) is provided with a docking assembly (2) for fixing the copper busbar to prevent deformation. The docking assembly (2) includes two sets of fixed platforms (21) fixedly connected to the top of the movable base (11), and a fixed plate (22) is fixedly connected to the top of the fixed platform (21). The top of the fixed plate (22) is slidably connected to a docking plate (23) via a slide rail. A clamping plate (24) and a clamping seat (25) are respectively provided on both sides of the top of the docking plate (23). A pre-pressing assembly (3) for fixing the copper busbar is provided on one side of the top of the fixed plate (22).
2. The laser welding equipment for copper busbars in a power distribution cabinet according to claim 1, characterized in that, The top of the base (1) is slidably connected to the movable seat (11) via an installed slide rail. The top of the base (1) is fixedly connected to an installation column (12) and an installation plate. A screw (13) threadedly connected to the movable seat (11) is rotatably connected between the installation column (12) and the installation plate. A motor for driving the screw (13) to rotate is installed on the installation plate by bolts.
3. The laser welding equipment for copper busbars in a power distribution cabinet according to claim 2, characterized in that, The top of the mounting column (12) is fixedly connected to a limiting seat (15) that is slidably connected to it by a spring (14). The top of the limiting seat (15) has a groove that runs through one side. A lower grinding disc (16) is rotatably connected in the groove. A second motor that drives the lower grinding disc (16) to rotate is installed in the recess of the outer wall of the limiting seat (15). A collection box (17) that communicates with the groove is detachably installed on one side of the limiting seat (15).
4. The laser welding equipment for copper busbars in a power distribution cabinet according to claim 1, characterized in that, The clamping plate (24) is fixedly connected to the top side of the docking plate (23). The bottom of the clamping seat (25) is fixedly connected to two sets of sliding rods (26) that are slidably connected to the docking plate (23). The clamping seat (25) has several movable cavities on one side of the clamping plate (24), and each movable cavity is provided with a limit pin (27).
5. The laser welding equipment for copper busbars in a power distribution cabinet according to claim 4, characterized in that, A magnet (28) is fixedly installed on the end face of the movable cavity, and a magnet (29) is fixedly installed on the limiting pin (27) and slidably connected to the movable cavity. The same magnetic poles of the magnet (28) and the magnet (29) are arranged opposite to each other. A limiting plate (210) is fixedly installed on one side of the clamp (25) and slidably connected to the limiting pin (27).
6. The laser welding equipment for copper busbars in a power distribution cabinet according to claim 5, characterized in that, An L-shaped plate (211) is slidably connected to the fixed platform (21), and an electric push rod (212) is fixedly installed between the L-shaped plate (211) and the fixed platform (21). A linkage plate (213) fixedly connected to the L-shaped plate (211) is slidably connected to the clamp (25) via an installed slide rail.
7. The laser welding equipment for copper busbars in a power distribution cabinet according to claim 6, characterized in that, The initial pressure assembly (3) includes a push column (31) that is slidably connected to a fixed plate (22). An L-shaped pressure plate (32) is installed on the top of the push column (31). An inclined elastic rubber block (33) is fixedly connected to the bottom of the L-shaped pressure plate (32). A guide pin (34) is installed on the bottom of the push column (31). An L-shaped guide groove (214) that is slidably connected to the guide pin (34) is provided on the L-shaped plate (211).
8. The laser welding equipment for copper busbars in a power distribution cabinet according to claim 7, characterized in that, The L-shaped pressure plate (32) is fixedly connected with an upper guide post (35) and a lower guide post (36). The top of the fixed plate (22) is fixedly connected with two sets of L-plates (37) that are slidably connected to both sides of the push post (31). The L-plates (37) are provided with L-shaped guide grooves (38) that are slidably connected to the upper guide post (35) and the lower guide post (36). The lower guide post (36) is rotatably connected to the push post (31).
9. The laser welding equipment for copper busbars in a power distribution cabinet according to claim 1, characterized in that, The bottom of the docking plate (23) is fixedly connected to an ear plate, and a tension spring (215) is fixedly connected between the ear plate and the fixing plate (22).
10. The laser welding equipment for copper busbars in a power distribution cabinet according to claim 1, characterized in that, The base (1) is fixedly connected to the top of an F-shaped frame (18), and laser welding heads (19) arranged in a mirror image are fixedly installed on the F-shaped frame (18). A square rod (110) is slidably connected to the F-shaped frame (18), and a stop plate and a chip suction hood (111) are fixedly connected to the top and bottom sides of the square rod (110) respectively. An upper grinding disc (112) is rotatably installed inside the chip suction hood (111). A motor that drives the upper grinding disc (112) to rotate is installed on the outer wall of the chip suction hood (111). A chip suction pipe is connected to the chip suction hood (111).