Electric permanent magnetic chuck for welding

Abstract

The application belongs to the technical field of welding clamping, and particularly relates to a welding clamping electric permanent magnetic chuck, which comprises a mounting frame, the upper side wall of the mounting frame is fixedly connected with an electric permanent magnetic chuck body, the right side wall of the mounting frame is connected with a control panel, and the mounting frame further comprises a mounting plate which is fixedly connected to the upper side wall of the mounting frame and located behind the electric permanent magnetic chuck body, and the side wall of the mounting plate is provided with a blowing assembly. After the welding work of clamping workpieces by the electric permanent magnetic chuck is completed, the welding slag attached to the surface of the chuck can be automatically cleaned, so that the problem that the welding slag affects the adsorption capacity of the chuck is avoided, manual cleaning is not needed, the labor cost is reduced, and the cooling speed of the welding part of the workpiece can be accelerated during the welding work.

Description

Technical Field

[0001] This invention belongs to the field of welding clamping technology, and in particular relates to an electro-permanent magnet chuck for welding clamping. Background Technology

[0002] An electro-permanent magnet chuck is a chuck that relies on a permanent magnet to generate attraction. The attraction force of the magnet is controlled by an excitation coil, which acts as a force switch. It can be used to clamp and fix the object being welded during welding operations. For example, an electro-permanent magnet chuck for welding clamping is proposed in patent publication number CN215238929U.

[0003] In operations where electro-permanent magnet chucks are used to clamp welding workpieces, some of the welding slag produced during the welding process is prone to splash onto the surface of the chuck. Due to the high hardness and irregular shape of the welding slag, if it is not cleaned in time, it will form a "support point" on the contact surface between the chuck and the workpiece, causing the two to be unable to fully fit together. This gap will cause the magnetic field to "leak" and thus reduce the effective clamping area of ​​the workpiece, decrease the clamping force, and affect the clamping stability. At the same time, the welding slag is difficult to clean, requiring operators to invest a lot of manpower and time, directly reducing the overall efficiency of the welding operation.

[0004] To address this issue, an electro-permanent magnet chuck for welding clamping is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing an electro-permanent magnet chuck for welding clamping.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an electro-permanent magnet chuck for welding clamping, comprising a mounting frame, wherein an electro-permanent magnet chuck body is fixedly connected to the upper side wall of the mounting frame, and a control panel is connected to the right side wall of the mounting frame, and further comprising:

[0007] The mounting plate is fixedly connected to the upper side wall of the mounting frame and is located behind the electro-permanent magnet chuck body. The side wall of the mounting plate is provided with an air blowing assembly.

[0008] The scraping component, located on the upper side wall of the mounting bracket, is used to clean the welding slag adhering to the surface of the electro-permanent magnet chuck body.

[0009] Multiple sensing components are housed within the scraping assembly to detect the performance of the surface magnets of the electro-permanent magnet chuck.

[0010] Preferably, the air blowing assembly includes an air blowing head fixedly connected to the front side wall of the mounting plate. The air blowing head has a conical structure. An air supply pipe is fixedly connected to the rear side wall of the mounting plate. Multiple short pipes are fixedly connected between the air supply pipe and the air blowing head. An air blowing pump is fixedly connected to the rear side wall of the mounting plate. The air outlet of the air blowing pump is connected to the air supply pipe.

[0011] Preferably, the scraping assembly includes a movable frame, a movable rod fixedly connected to the rear side wall of the movable frame, both the movable rod and the movable frame being inverted L-shaped structures, a first linear module fixedly connected to the upper side wall of the mounting frame, the movable end of the first linear module being fixedly connected to the lower end of the movable rod, a movable opening matching the movable rod being opened on the side wall of the mounting plate, a horizontal plate fixedly connected to the front side wall of the movable frame, two cleaning electric push rods fixedly connected to the lower side wall of the horizontal plate, the lower ends of the two cleaning electric push rods being fixedly connected to the same hard scraper, a first electric push rod fixedly connected to the upper side wall of the movable frame, the movable end of the first electric push rod passing through the movable frame and fixedly connected to a lifting frame, the lifting frame being inverted L-shaped structures, a fixed shaft fixedly connected to the rear inner wall of the lifting frame, a cleaning sleeve being rotatably connected to the rod wall of the fixed shaft via a bearing, a cleaning cotton layer being pasted on the outer wall of the cleaning sleeve, and a detection assembly being provided on the surface of the lifting frame.

[0012] Preferably, each of the plurality of sensing components includes a sensing cylinder, the plurality of sensing cylinders are disposed inside the fixed shaft, a tension sensor is fixedly connected to the upper inner wall of the sensing cylinder, a metal plate is fixedly connected to the detection end of the tension sensor, a support ring is fixedly connected to the inner wall of the sensing cylinder, and the same spring is fixedly connected between the support ring and the metal plate.

[0013] Preferably, the detection component includes a second electric push rod fixedly connected to the upper side wall of the lifting frame. The moving end of the second electric push rod passes through the lifting frame and is fixedly connected to a second linear module. The moving end of the second linear module is fixedly connected to a small electric push rod. The moving end of the small electric push rod is fixedly connected to a detection motor. The output end of the detection motor is fixedly connected to a rotating plate. The lower side wall of the rotating plate is fixedly connected to a detection probe. The detection probe is electrically connected to the controller inside the control panel.

[0014] Preferably, a plurality of hydraulic cylinders are fixedly connected to the lower side wall of the mounting frame, and the moving ends of the plurality of hydraulic cylinders extend out of the mounting frame and are fixedly connected to a placement frame plate.

[0015] Preferably, a control valve is provided inside the short pipe, and multiple inductive switches are fixedly connected to the front side wall of the mounting plate, with the inductive switches and corresponding control valves electrically connected.

[0016] Preferably, the upper side wall of the lifting frame is fixedly connected to a plurality of longitudinally distributed vision sensors, and the vision sensors are electrically connected to the controller inside the control panel.

[0017] Compared with existing technologies, the advantages of an electro-permanent magnet chuck for welding clamping are:

[0018] 1. By using the air blowing and scraping components, after the welding work is completed using the electro-permanent magnet chuck to hold the workpiece, the welding slag attached to the surface of the chuck can be automatically cleaned, thus avoiding the problem of welding slag affecting the adsorption capacity of the chuck. Moreover, manual cleaning is not required, reducing labor costs. In addition, the cooling rate of the welded part of the workpiece can be accelerated during the welding process.

[0019] 2. Through the set sensing and detection components, after the electro-permanent magnet chuck is magnetized, the performance of the magnets on the surface of the electro-permanent magnet chuck can be automatically detected. When the performance of individual magnets is weakened, the outer surface of the magnets can be further detected in time to help the operator judge the reason for the weakening of the magnet performance and facilitate the repair of the electro-permanent magnet chuck.

[0020] 3. By using the hydraulic cylinder and placement frame, before placing heavy workpieces onto the electro-permanent magnet chuck, the workpiece can be placed on the surface of the placement frame first. Then, the hydraulic cylinder drives the placement frame and the workpiece to move slowly downwards, so that the workpiece is slowly placed onto the surface of the electro-permanent magnet chuck. This avoids the problem of the workpiece colliding with the electro-permanent magnet chuck at a fast placement speed, which would damage the electro-permanent magnet chuck. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an electro-permanent magnet chuck for welding clamping provided by the present invention;

[0022] Figure 2 This is a schematic diagram of the scraping component and the detection component in an electro-permanent magnet chuck for welding clamping provided by the present invention;

[0023] Figure 3 This is a schematic diagram of the induction component in an electro-permanent magnet chuck for welding clamping provided by the present invention;

[0024] Figure 4 This is a schematic diagram showing the connection relationship between the first linear module and the moving rod in an electro-permanent magnet chuck for welding clamping provided by the present invention;

[0025] Figure 5 This is a schematic diagram of the surface structure of the second linear module in an electro-permanent magnet chuck for welding clamping provided by the present invention;

[0026] Figure 6 This is a schematic diagram of the air blowing component in an electro-permanent magnet chuck for welding clamping provided by the present invention.

[0027] In the diagram: 1. Mounting bracket, 2. Electro-permanent magnet chuck body, 3. Control panel, 4. Mounting plate, 5. Air blowing assembly, 51. Air blowing head, 52. Air delivery pipe, 6. Short pipe, 7. Air blowing pump, 8. Scraping assembly, 81. Moving frame, 82. Moving rod, 9. First linear module, 10. Horizontal plate, 11. Cleaning electric push rod, 12. Hard scraper, 13. First electric push rod, 14. Lifting frame, 15. Fixed shaft, 16. Cleaning sleeve, 17. Cleaning cotton layer, 18. Sensing assembly, 181. Sensing cylinder, 182. Tension sensor, 19. Metal plate, 20. Support ring, 21. Detection assembly, 211. Second electric push rod, 212. Second linear module, 22. Small electric push rod, 23. Detection motor, 24. Rotating plate, 25. Detection probe, 26. Hydraulic cylinder, 27. Placement frame plate, 28. Control valve, 29. Inductive switch, 30. Vision sensor. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] like Figures 1-6 As shown, a welding clamping electro-permanent magnet chuck includes a mounting frame 1, an electro-permanent magnet chuck body 2 fixedly connected to the upper side wall of the mounting frame 1, a control panel 3 connected to the right side wall of the mounting frame 1, and further includes:

[0030] Mounting plate 4 is fixedly connected to the upper side wall of mounting frame 1 and located behind electro-permanent magnet chuck body 2. The side wall of mounting plate 4 is provided with air blowing assembly 5. Air blowing assembly 5 includes air blowing head 51 fixedly connected to the front side wall of mounting plate 4. Air blowing head 51 has a conical structure. Air supply pipe 52 is fixedly connected to the rear side wall of mounting plate 4. Multiple short pipes 6 are fixedly connected between air supply pipe 52 and air blowing head 51. Air pump 7 is fixedly connected to the rear side wall of mounting plate 4. The air outlet of air pump 7 is connected to air supply pipe 52. Control valve 28 is provided in short pipe 6. Multiple induction switches 29 are fixedly connected to the front side wall of mounting plate 4. Induction switches 29 and corresponding control valves 28 are electrically connected, which can accelerate the cooling speed of the welded part of the workpiece after the welding work is completed.

[0031] A scraping assembly 8, located on the upper side wall of the mounting frame 1, is used to clean welding slag adhering to the surface of the electro-permanent magnet chuck body 2. The scraping assembly 8 includes a movable frame 81, with a movable rod 82 fixedly connected to the rear side wall of the movable frame 81. Both the movable rod 82 and the movable frame 81 are inverted L-shaped structures. A first linear module 9 is fixedly connected to the upper side wall of the mounting frame 1. The movable end of the first linear module 9 is fixedly connected to the lower end of the movable rod 82. The side wall of the mounting plate 4 has a movable opening that matches the movable rod 82. A horizontal plate 10 is fixedly connected to the front side wall of the movable frame 81. Two cleaning electric push rods 11 are fixedly connected to the lower side wall of the horizontal plate 10. The lower ends of the two cleaning electric push rods 11 are fixedly connected to the same hard scraper 12. A first electric push rod 12 is fixedly connected to the upper side wall of the movable frame 81. 3. The moving end of the first electric push rod 13 passes through the moving frame 81 and is fixedly connected to the lifting frame 14. The lifting frame 14 has an inverted L-shaped structure. A fixed shaft 15 is fixedly connected to the inner rear wall of the lifting frame 14. The rod wall of the fixed shaft 15 is rotatably connected to the cleaning sleeve 16 through the bearing. A cleaning cotton layer 17 is pasted on the outer wall of the cleaning sleeve 16. Multiple longitudinally distributed vision sensors 30 are fixedly connected to the upper side wall of the lifting frame 14. The vision sensors 30 are electrically connected to the internal controller of the control panel 3. The surface of the lifting frame 14 is provided with a detection component 21. After the welding work is completed by using the electro-permanent magnet chuck to hold the workpiece, the welding slag attached to the surface of the chuck can be automatically cleaned, thereby avoiding the problem that the welding slag affects the adsorption capacity of the chuck. Moreover, manual cleaning is not required, which reduces labor costs.

[0032] Multiple sensing components 18 are all disposed within the scraping component 8 and are used to detect the performance of the surface magnet of the electro-permanent magnet chuck (the magnet is made of high-temperature resistant samarium cobalt permanent magnet). Each sensing component 18 includes a sensing cylinder 181, which is disposed inside the fixed shaft 15. A tension sensor 182 is fixedly connected to the upper inner wall of the sensing cylinder 181. A metal plate 19 is fixedly connected to the detection end of the tension sensor 182. A support ring 20 is fixedly connected to the inner wall of the sensing cylinder 181. The same spring is fixedly connected between the support ring 20 and the metal plate 19. After the electro-permanent magnet chuck is magnetized, the uniformity of the magnetic field on the surface of the electro-permanent magnet chuck can be detected.

[0033] The detection component 21 includes a second electric push rod 211 fixedly connected to the upper side wall of the lifting frame 14. The moving end of the second electric push rod 211 passes through the lifting frame 14 and is fixedly connected to a second linear module 212. The moving end of the second linear module 212 is fixedly connected to a small electric push rod 22. The moving end of the small electric push rod 22 is fixedly connected to a detection motor 23. The output end of the detection motor 23 is fixedly connected to a rotating plate 24. The lower side wall of the rotating plate 24 is fixedly connected to a detection probe 25. The detection probe 25 is electrically connected to the internal controller of the control panel 3. When the performance of individual magnets is weakened, the outer surface of the magnets can be further inspected in a timely manner to help the operator determine the cause of the weakened performance of the magnets and facilitate the repair of the electro-permanent magnet chuck.

[0034] Multiple hydraulic cylinders 26 are fixedly connected to the lower side wall of the mounting frame 1. The moving ends of the multiple hydraulic cylinders 26 extend out of the mounting frame 1 and are fixedly connected to the placement frame plate 27. Before placing a heavy workpiece onto the electro-permanent magnet chuck, the workpiece can be placed on the surface of the placement frame plate 27 first. Then, the hydraulic cylinders 26 drive the placement frame plate 27 and the workpiece to move slowly downward, so that the workpiece is slowly placed onto the surface of the electro-permanent magnet chuck. This avoids the problem of the workpiece being placed too quickly and colliding with the electro-permanent magnet chuck body 2, which would damage the electro-permanent magnet chuck body 2.

[0035] The operating principle of the present invention is explained as follows: When welding a workpiece, if the workpiece is heavy, the operator needs to use external hoisting equipment (crane) to place one end of the workpiece on the surface of the placement frame plate 27 (the initial raised position of the placement frame plate 27 in the initial state). Then, the operator sends an electrical signal to the controller inside the control panel 3 through the remote control device. After receiving the electrical signal, the controller will control multiple hydraulic cylinders 26 to drive the placement frame plate 27 and the workpiece to move slowly downward together, so that the workpiece is slowly placed on the surface of the electro-permanent magnet chuck body 2. During the lowering process, the operator adjusts the placement angle and position of the workpiece to ensure that the workpiece is placed in the appropriate position.

[0036] After the workpiece is placed, it can be welded using external welding equipment. After welding, the controller will activate the air pump 7 and open all control valves 28. The air pump 7 delivers external gas through the air supply pipe 52 and multiple short pipes 6 to the air blowing head 51 for spraying, accelerating the cooling of the workpiece. Once the workpiece has cooled, it is removed using external hoisting equipment. Then, the operator sends an electrical signal to the internal controller via the control panel 3. Upon receiving the signal, the controller will activate the cleaning electric push rod 11 to drive... The hard scraper 12 moves downward to a designated position, aligning its lower end with the upper surface of the electro-permanent magnet chuck body 2, and controls the first linear module 9 to operate. After oil stains adhere to the surface of the workpiece, the operator needs to control the first electric push rod 13 via the control panel 3 to move the lifting frame 14 and fixed shaft 15 downward to a set position. The first linear module 9, through the moving rod 82, moves the moving frame 81, moving the horizontal plate 10, the cleaning electric push rod 11, and the hard scraper 12, using the hard scraper 12 to clean the workpiece. The welding slag adhering to the surface of the electro-permanent magnet chuck body 2 is scraped off. During the movement of the moving frame 81, the controller inside the control panel 3 also controls the air pump 7 to stop working and closes all control valves 28. When the moving frame 81 moves to the front of the leftmost induction switch 29, the leftmost induction switch 29 controls the air pump to work through the controller inside the control panel 3 and opens the corresponding control valve 28. The air pump then delivers external gas through the corresponding short pipe 6 to the area corresponding to the air blowing head 51, causing the scraped welding slag to be removed. After the moving frame 81 detaches from the surface of the electro-permanent magnet chuck body 2, and after the moving frame 81 moves away from the front of the corresponding induction switch 29, the induction switch 29 will control the control valve 28 inside the corresponding short tube 6 to close through the controller, so that the air outlet area of ​​the air blowing head 51 moves with the hard scraper 12. After the hard scraper 12 cleans the welding slag on the surface of the electro-permanent magnet chuck body 2, the fixed shaft 15 will drive the cleaning cotton layer 17 to move on the surface of the electro-permanent magnet chuck body 2 through the cleaning sleeve 16, and use the cleaning cotton layer 17 to clean the oil stains on the surface of the electro-permanent magnet chuck body 2.

[0037] After the rigid scraper 12 moves to the far right and separates from the electro-permanent magnet chuck body 2, the operator needs to use a cleaning cloth to clean the oil stains on the surface of the rigid scraper 12. Then, using the control panel 3, the operator controls the cleaning electric push rod 11 to move the rigid scraper 12 upwards to the initial position. Simultaneously, the control panel 3 controls the first electric push rod 13 to move the lifting frame 14 upwards to the designated position and controls the electro-permanent magnet chuck body 2 to be in a magnetized state. Then, the operator uses the control panel 3 to control the first linear module 9 to move the moving frame 81 to the left. When the fixed shaft 1... 5. After moving above the electro-permanent magnet chuck body 2, the magnetic force generated by the electro-permanent magnet chuck will attract multiple metal plates 19 inside the fixed shaft 15. The metal plates 19 will overcome the spring force and move downwards, thereby applying a pulling force to the tension sensor 182. When a magnet on the surface of the electro-permanent magnet chuck body 2 weakens due to a malfunction, the magnetic attraction force on the metal plate 19 will weaken after it moves to that area. After the controller inside the control panel 3 detects this situation through the tension sensor 182, it will control the electro-permanent magnet chuck body 2 to demagnetize and control... The controller moves the first linear module 9 to the right, causing the moving frame 81 to move to a set position, so that the second linear module 212 moves to that area. Then, the controller controls the second electric push rod 211 to move the second linear module 212 and the detection probe 25 downwards together, so that the detection probe 25 contacts the electro-permanent magnet chuck body 2. Next, the controller controls the second linear module 212 to move the detection probe 25 to an area where the magnetic force is weakened (the controller detects that the tension of a certain tension sensor 182 is weakened, so it controls the detection probe 25 to move to that area). Then, the controller controls the detection motor 23 to work, and the detection motor 23 will drive the detection probe 25 to rotate on the surface of the magnet through the rotating plate 24 to detect the wear degree of the magnet. When the controller detects through the detection probe 25 that the magnetic force is weakened due to the wear of the magnet, the control panel 3 will display the location of the problematic magnet on its touch screen surface, so that the operator can quickly find and replace it. When the controller detects through the detection probe 25 that the magnet is not problematic, the control panel 3 will display this situation, and the operator can perform other checks on the electro-permanent magnet chuck body 2.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding clamping electro-permanent magnet chuck, comprising a mounting frame (1), wherein an electro-permanent magnet chuck body (2) is fixedly connected to the upper side wall of the mounting frame (1), and a control panel (3) is connected to the right side wall of the mounting frame (1), characterized in that, Also includes: Mounting plate (4) is fixedly connected to the upper side wall of mounting bracket (1) and located behind the electro-permanent magnet chuck body (2). The side wall of mounting plate (4) is provided with air blowing assembly (5). The scraping component (8) is set on the upper side wall of the mounting bracket (1) and is used to clean the welding slag adhering to the surface of the electro-permanent magnet chuck body (2). Multiple sensing components (18) are all disposed within the scraping assembly (8) for detecting the performance of the surface magnet of the electro-permanent magnet chuck. The scraping assembly (8) includes a movable frame (81), and a movable rod (82) is fixedly connected to the rear side wall of the movable frame (81). Both the movable rod (82) and the movable frame (81) are inverted L-shaped structures. A first linear module (9) is fixedly connected to the upper side wall of the mounting frame (1). The movable end of the first linear module (9) is fixedly connected to the lower end of the movable rod (82). The side wall of the mounting plate (4) has a movable opening that matches the movable rod (82). The front side wall of the movable frame (81) is fixedly connected to... There is a horizontal plate (10), and two cleaning electric push rods (11) are fixedly connected to the lower side wall of the horizontal plate (10). The lower ends of the two cleaning electric push rods (11) are fixedly connected to the same hard scraper (12). The upper side wall of the movable frame (81) is fixedly connected to a first electric push rod (13). The moving end of the first electric push rod (13) passes through the movable frame (81) and is fixedly connected to a lifting frame (14). The lifting frame (14) has an inverted L-shaped structure. A fixed shaft (15) is fixedly connected to the rear inner wall of the lifting frame (14). The rod wall of the fixed shaft (15) is rotatably connected to a cleaning sleeve (16) through a bearing. (16) The outer wall is covered with a cleaning cotton layer (17). The surface of the lifting frame (14) is provided with a detection component (21). Multiple sensing components (18) each include a sensing cylinder (181). Multiple sensing cylinders (181) are all set inside the fixed shaft (15). A tension sensor (182) is fixedly connected to the upper inner wall of the sensing cylinder (181). A metal plate (19) is fixedly connected to the detection end of the tension sensor (182). A support ring (20) is fixedly connected to the inner wall of the sensing cylinder (181). The same spring is fixedly connected between the support ring (20) and the metal plate (19). The detection component (21) The device includes a second electric push rod (211) fixedly connected to the upper side wall of the lifting frame (14). The moving end of the second electric push rod (211) passes through the lifting frame (14) and is fixedly connected to a second linear module (212). The moving end of the second linear module (212) is fixedly connected to a small electric push rod (22). The moving end of the small electric push rod (22) is fixedly connected to a detection motor (23). The output end of the detection motor (23) is fixedly connected to a rotating plate (24). The lower side wall of the rotating plate (24) is fixedly connected to a detection probe (25). The detection probe (25) is electrically connected to the internal controller of the control panel (3).

2. The electro-permanent magnet chuck for welding clamping according to claim 1, characterized in that, The air blowing assembly (5) includes an air blowing head (51) fixedly connected to the front side wall of the mounting plate (4). The air blowing head (51) has a conical structure. An air supply pipe (52) is fixedly connected to the rear side wall of the mounting plate (4). Multiple short pipes (6) are fixedly connected between the air supply pipe (52) and the air blowing head (51). An air blowing pump (7) is fixedly connected to the rear side wall of the mounting plate (4). The air outlet of the air blowing pump (7) is connected to the air supply pipe (52).

3. The electro-permanent magnet chuck for welding clamping according to claim 1, characterized in that, The lower side wall of the mounting bracket (1) is fixedly connected to a plurality of hydraulic cylinders (26), the moving ends of the plurality of hydraulic cylinders (26) extend out of the mounting bracket (1) and are fixedly connected to a placement frame plate (27).

4. The electro-permanent magnet chuck for welding clamping according to claim 2, characterized in that, The short pipe (6) is equipped with a control valve (28), and the front side wall of the mounting plate (4) is fixedly connected with multiple induction switches (29). The induction switches (29) and the corresponding control valves (28) are electrically connected.

5. The electro-permanent magnet chuck for welding clamping according to claim 1, characterized in that, The upper side wall of the lifting frame (14) is fixedly connected with a plurality of longitudinally distributed vision sensors (30), and the vision sensors (30) are electrically connected to the internal controller of the control panel (3).

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