Electric permanent magnetic chuck for welding clamping

Abstract

The invention belongs to the technical field of welding clamping, and particularly relates to an electric permanent magnetic chuck for welding clamping, which comprises a mounting rack, an electric permanent magnetic chuck body fixedly connected to the upper side wall of the mounting rack, a control panel connected to the right side wall of the mounting rack, and a mounting plate fixedly connected to the upper side wall of the mounting rack, and an air blowing assembly is arranged on the side wall of the mounting plate. After the electric permanent magnetic chuck is used for clamping a workpiece for welding, welding slag attached to the surface of the chuck can be automatically cleaned, so that the problem that the adsorption capacity of the chuck is affected by the welding slag is avoided, manual cleaning is not needed, the labor cost is reduced, and the welding efficiency is improved in the welding process. And the cooling speed of a workpiece welding part can be accelerated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of welding clamping, in particular to an electric permanent magnetic chuck for welding clamping. BACKGROUND

[0002] The electric permanent magnetic chuck refers to a chuck that relies on the suction force of a permanent magnetic steel to control the suction force of the magnetic steel through an excitation coil to play the role of a suction force switch. The electric permanent magnetic chuck can clamp and fix the welding object during welding operation. For example, the electric permanent magnetic chuck is disclosed in Patent No. CN215238929U.

[0003] In the operation of clamping a welding workpiece by using the electric permanent magnetic chuck, part of the welding slag generated in the welding process is easy to splash onto the surface of the chuck. Since the welding slag has high hardness and irregular shape, if it is not cleaned in time, it will form "support points" on the contact surface between the chuck and the workpiece, which will cause the two to fail to fully adhere to each other. Such a gap will cause the magnetic field to "leak", thereby reducing the effective clamping area of the workpiece and the clamping force, and affecting the clamping stability. At the same time, the welding slag is difficult to clean, which requires operators to invest a lot of manpower and time, thereby directly reducing the overall efficiency of the welding operation.

[0004] Therefore, the electric permanent magnetic chuck for welding clamping is proposed to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide an electric permanent magnetic chuck for welding clamping to solve the above problems.

[0006] To achieve the above purpose, the present application adopts the following technical scheme: an electric permanent magnetic chuck for welding clamping, comprising a mounting frame, an electric permanent magnetic chuck body fixedly connected to the upper side wall of the mounting frame, and a control panel connected to the right side wall of the mounting frame, further comprising:

[0007] A mounting plate is fixedly connected to the upper side wall of the mounting frame and located behind the electric permanent magnetic chuck body. The side wall of the mounting plate is provided with a gas blowing assembly;

[0008] A scraping assembly is arranged on the upper side wall of the mounting frame for cleaning the welding slag adhered to the surface of the electric permanent magnetic chuck body;

[0009] A plurality of sensing assemblies are arranged in the scraping assembly for detecting the performance of the surface magnetic steel of the electric permanent magnetic chuck.

[0010] Preferably, the gas blowing assembly comprises a gas blowing head fixedly connected to the front side wall of the mounting plate. The gas blowing head is in a conical structure. The rear side wall of the mounting plate is fixedly connected with a gas supply pipe. A plurality of short pipes are fixedly and communicatively connected between the gas supply pipe and the gas blowing head. The rear side wall of the mounting plate is fixedly connected with a gas blowing pump. The gas outlet end of the gas blowing pump is in communication with the gas supply pipe.

[0011] Preferably, the scraping assembly comprises a moving frame, a moving rod is fixedly connected to the rear side wall of the moving frame, the moving rod and the moving frame are both inverted L-shaped structures, a first linear module is fixedly connected to the upper side wall of the mounting frame, the moving end of the first linear module is fixedly connected to the lower end of the moving rod, a moving opening matched with the moving rod is formed in the side wall of the mounting plate, a horizontal plate is fixedly connected to the front side wall of the moving frame, two cleaning electric push rods are fixedly connected to the lower side wall of the horizontal plate, a same hard scraper is fixedly connected to the lower ends of the two cleaning electric push rods, a first electric push rod is fixedly connected to the upper side wall of the moving frame, the moving end of the first electric push rod penetrates through the moving frame, and a lifting frame is fixedly connected to the first electric push rod, the lifting frame is an inverted L-shaped structure, a fixing shaft is fixedly connected to the inner wall of the rear side of the lifting frame, a cleaning sleeve is rotatably connected to the rod wall of the fixing shaft through a bearing, a cleaning cotton layer is attached to the outer wall of the cleaning sleeve, and a detection assembly is arranged on the surface of the lifting frame.

[0012] Preferably, the plurality of sensing assemblies each comprise a sensing cylinder, and the plurality of sensing cylinders are arranged in the interiors of the fixing shafts, 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 supporting ring is fixedly connected to the inner wall of the sensing cylinder, and a same spring is fixedly connected between the supporting ring and the metal plate.

[0013] Preferably, the detection assembly comprises 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 penetrates through the lifting frame and is fixedly connected with a second linear module, the moving end of the second linear module is fixedly connected with a small electric push rod, the moving end of the small electric push rod is fixedly connected with a detection motor, the output end of the detection motor is fixedly connected with a rotating plate, the lower side wall of the rotating plate is fixedly connected with a detection probe, and the detection probe is electrically connected with the internal controller of the control panel.

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

[0015] Preferably, a control valve is arranged in the short pipe, a plurality of sensing switches are fixedly connected to the front side wall of the mounting plate, and the sensing switches are electrically connected with the corresponding control valves.

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

[0017] Compared with the prior art, the welding clamping electric permanent magnet suction disc has the following advantages:

[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 figure: 1 mounting frame, 2 electric permanent magnet chuck body, 3 control panel, 4 mounting plate, 5 air blowing assembly, 51 air blowing head, 52 air supply pipe, 6 short pipe, 7 air blowing pump, 8 scraping assembly, 81 moving frame, 82 moving rod, 9 first linear module, 10 cross 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 induction assembly, 181 induction 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 placing frame plate, 28 control valve, 29 induction switch, 30 visual sensor. DETAILED DESCRIPTION

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

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

[0030] A mounting plate 4 is fixedly connected to the upper side wall of the mounting frame 1 and located behind the electric permanent magnet chuck body 2. The side wall of the mounting plate 4 is provided with an air blowing assembly 5. 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 is of a conical structure. The rear side wall of the mounting plate 4 is fixedly connected with an air supply pipe 52. A plurality of short pipes 6 are fixedly and communicatively connected between the air supply pipe 52 and the air blowing head 51. The rear side wall of the mounting plate 4 is fixedly connected with an air blowing pump 7. The air outlet end of the air blowing pump 7 is in communication with the air supply pipe 52. The short pipes 6 are provided with control valves 28. The front side wall of the mounting plate 4 is fixedly connected with a plurality of induction switches 29. The induction switches 29 are electrically connected with the corresponding control valves 28. After the welding work is completed, the induction switches 29 can accelerate the cooling speed of the workpiece welding part.

[0031] The scraping assembly 8 is arranged on the upper side wall of the mounting frame 1 and is used for cleaning the welding slag attached to the surface of the electro-permanent magnetic chuck body 2. The scraping assembly 8 comprises a moving frame 81, the rear side wall of the moving frame 81 is fixedly connected with a moving rod 82, the moving rod 82 and the moving frame 81 are both in inverted L-shaped structure, the upper side wall of the mounting frame 1 is fixedly connected with a first linear module 9, the moving end of the first linear module 9 is fixedly connected with the lower end of the moving rod 82, the side wall of the mounting plate 4 is provided with a moving opening matched with the moving rod 82, the front side wall of the moving frame 81 is fixedly connected with a horizontal plate 10, the lower side wall of the horizontal plate 10 is fixedly connected with two cleaning electric push rods 11, the lower ends of the two cleaning electric push rods 11 are fixedly connected with a same hard scraper 12, the upper side wall of the moving frame 81 is fixedly connected with a first electric push rod 13, the moving end of the first electric push rod 13 penetrates through the moving frame 81 and is fixedly connected with a lifting frame 14, the lifting frame 14 is in inverted L-shaped structure, the rear side inner wall of the lifting frame 14 is fixedly connected with a fixed shaft 15, the rod wall of the fixed shaft 15 is rotatably connected with a cleaning sleeve 16 through a bearing, the outer wall of the cleaning sleeve 16 is pasted with a cleaning cotton layer 17, the upper side wall of the lifting frame 14 is fixedly connected with a plurality of longitudinally distributed visual sensors 30, the visual sensors 30 are electrically connected with the internal controller of the control panel 3, the surface of the lifting frame 14 is provided with a detection assembly 21, after the welding work of clamping the workpiece by the electro-permanent magnetic chuck is completed, 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, and manual cleaning is not needed, thereby reducing the labor cost.

[0032] A plurality of sensing assemblies 18 are arranged in the scraping assembly 8 and are used for detecting the performance of the surface magnetic steel of the electro-permanent magnetic chuck (the magnetic steel is made of high-temperature-resistant material samarium-cobalt permanent magnet), each of the plurality of sensing assemblies 18 comprises a sensing cylinder 181, the plurality of sensing cylinders 181 are arranged in the interior of the fixed shaft 15, the upper side inner wall of the sensing cylinder 181 is fixedly connected with a tension sensor 182, the detection end of the tension sensor 182 is fixedly connected with a metal plate 19, the inner wall of the sensing cylinder 181 is fixedly connected with a supporting ring 20, the same spring is fixedly connected between the supporting ring 20 and the metal plate 19, after the electro-permanent magnetic chuck is magnetized, the uniformity of the surface magnetic field of the electro-permanent magnetic chuck can be detected.

[0033] The detection assembly 21 comprises a second electric push rod 211 fixedly connected to the side wall of the lifting frame 14, the moving end of the second electric push rod 211 penetrating through the lifting frame 14 and being fixedly connected with a second linear module 212, the moving end of the second linear module 212 being fixedly connected with a small electric push rod 22, the moving end of the small electric push rod 22 being fixedly connected with a detection motor 23, the output end of the detection motor 23 being fixedly connected with a rotating plate 24, the lower side wall of the rotating plate 24 being fixedly connected with a detection probe 25, the detection probe 25 being electrically connected with the controller in the control panel 3, when the performance of the individual magnetic steel is detected to be weakened, the outer surface of the magnetic steel can be further detected in time, the operator can be assisted to judge the cause of the weakened performance of the magnetic steel, and the electric permanent magnetic chuck can be repaired.

[0034] The lower side wall of the mounting frame 1 is fixedly connected with a plurality of hydraulic cylinders 26, the moving ends of the plurality of hydraulic cylinders 26 extending out of the mounting frame 1 and being fixedly connected with a placing frame plate 27, before a workpiece with a large weight is placed on the electric permanent magnetic chuck, the workpiece can be placed on the surface of the placing frame plate 27 first, and then the placing frame plate 27 and the workpiece are slowly moved downward by the hydraulic cylinders 26, so that the workpiece is slowly placed on the surface of the electric permanent magnetic chuck, thereby avoiding the problem that the workpiece is placed at a high speed and collides with the electric permanent magnetic chuck body 2, causing damage to the electric permanent magnetic chuck body 2.

[0035] The operation principle of the present application is described as follows: when the workpiece is welded, when the workpiece is heavy, the operator needs to use an external hoisting device (a crane) to place one end of the workpiece on the surface of the placing frame plate 27 (the placing frame plate 27 is initially raised to an initial position), then the operator sends an electric signal to the controller in the control panel 3 through a remote control device, and the controller controls the plurality of hydraulic cylinders 26 to drive the placing frame plate 27 and the workpiece to slowly move downward after receiving the electric signal, so that the workpiece is slowly placed on the surface of the electric permanent magnetic chuck body 2, and the operator adjusts the placement angle and position of the workpiece during the placing process, to ensure that the workpiece is placed in the appropriate position.

[0036] When the workpiece is placed, the workpiece can be welded by using external welding equipment, and after the welding work is completed, the controller controls the air blowing pump 7 to work and controls all control valves 28 to open. The air blowing pump 7 delivers external gas to the air blowing head 51 through the gas delivery pipe 52 and the plurality of short pipes 6, accelerates the cooling of the workpiece, and when the workpiece is cooled, the workpiece is removed by using external lifting equipment. Then the operator sends an electrical signal to the internal controller through the control panel 3. After receiving the electrical signal, the controller controls the hard scraper 12 to move downward to the specified position, so that the lower end of the hard scraper 12 is aligned with the upper surface of the electric permanent magnet chuck body 2, and controls the first linear module 9 to work. When the oil stains on the surface of the workpiece adhere to the surface of the electric permanent magnet chuck body 2, the operator also needs to control the first electric push rod 13 to move the lifting frame 14 and the fixed shaft 15 downward to the set position through the control panel 3. The first linear module 9 moves the moving frame 81 through the moving rod 82 to move the horizontal plate 10, the cleaning electric push rod 11 and the hard scraper 12. The hard scraper 12 is used to clean and scrape the welding slag adhering to the surface of the electric permanent magnet chuck body 2. During the movement of the moving frame 81, the controller in the control panel 3 also controls the air blowing pump 7 to stop working and controls all control valves 28 to close. When the moving frame 81 moves to the front of the leftmost inductive switch 29, the leftmost inductive switch 29 controls the air pump to work and controls the corresponding control valve 28 to open through the controller in the control panel 3. The air pump delivers external gas to the air blowing head 51 through the corresponding short pipe 6 to blow out the corresponding area, so that the scraped welding slag is separated from the surface of the electric permanent magnet chuck body 2. When the moving frame 81 moves away from the front of the corresponding inductive switch 29, the inductive switch 29 controls the corresponding short pipe 6 through the controller. The control valve 28 is closed, 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 electric permanent magnet chuck body 2, the fixed shaft 15 drives the cleaning cotton layer 17 to move on the surface of the electric permanent magnet chuck body 2 through the cleaning sleeve 16, and the cleaning cotton layer 17 is used to clean the oil stains on the surface of the electric permanent magnet chuck body 2.

[0037] When the hard scraper 12 moves to the rightmost side and separates from the electro-permanent magnetic chuck body 2, the operator needs to clean the oil stains on the surface of the hard scraper 12 with a cleaning cloth, and move the hard scraper 12 upward to the initial position by controlling the cleaning electric push rod 11 through the control panel 3, and move the lifting frame 14 upward to the specified position by controlling the first electric push rod 13 through the control panel 3, and control the electro-permanent magnetic chuck body 2 to be in the magnetization state, then the operator controls the moving frame 81 to move left by controlling the first linear module 9 through the control panel 3, when the fixed shaft 15 moves above the electro-permanent magnetic chuck body 2, the magnetic force generated by the electro-permanent magnetic chuck will attract the plurality of metal plates 19 inside the fixed shaft 15, and the metal plates 19 will move downward against the elastic force of the spring, thereby exerting a pulling force on the tension sensor 182, when a certain magnetic steel on the surface of the electro-permanent magnetic chuck body 2 is weakened due to failure, after the metal plate 19 moves to the area, the magnetic attraction force on the metal plate 19 will be weakened, and the controller in the control panel 3 detects this situation through the tension sensor 182, and then controls the electro-permanent magnetic chuck body 2 to demagnetize, and controls the moving frame 81 to move right to the set position through the first linear module 9, so that the second linear module 212 moves to the area, and then the controller controls the second electric push rod 211 to move the second linear module 212 and the detection probe 25 downward together, so that the detection probe 25 contacts the electro-permanent magnetic chuck body 2, then the controller controls the second linear module 212 to move the detection probe 25 to the area where the magnetic force is weakened (the controller detects that the tension of a certain tension sensor 182 is weakened, and then controls the detection probe 25 to move to the area), and then the controller controls the detection motor 23 to work, so that the detection motor 23 drives the detection probe 25 to rotate on the surface of the magnetic steel through the rotating plate 24, to detect the wear degree of the magnetic steel, when the controller detects through the detection probe 25 that the magnetic force is indeed attenuated due to the wear of the magnetic steel, the control panel 3 will display the position of the problematic magnetic steel on the surface of the touch screen, so that the operator can quickly find and replace it, when the controller detects through the detection probe 25 that the magnetic steel is not problematic, the control panel 3 will display this situation, and the operator can check the electro-permanent magnetic chuck body 2 in other aspects.

[0038] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A welding clamping electric permanent magnetic chuck, comprising a mounting frame (1), the upper side wall of the mounting frame (1) is fixedly connected with an electric permanent magnetic chuck body (2), the right side wall of the mounting frame (1) is connected with a control panel (3), characterized in that, Also include: The mounting plate (4) is fixedly connected to the upper side wall of the mounting frame (1), and is located behind the electric permanent magnetic chuck body (2). The side wall of the mounting plate (4) is provided with a blowing assembly (5). The scraping assembly (8) is arranged on the upper side wall of the mounting frame (1) and is used for cleaning the welding slag attached to the surface of the electric permanent magnetic chuck body (2). A plurality of sensing assemblies (18) are arranged in the scraping assembly (8) and are used for detecting the performance of the surface magnetic steel of the electric permanent magnetic chuck.

2. The electrically permanent magnet chuck for welding and holding according to claim 1, characterized in that, The blowing assembly (5) comprises a blowing head (51) fixedly connected to the front side wall of the mounting plate (4). The blowing head (51) is a conical structure. The rear side wall of the mounting plate (4) is fixedly connected with a gas supply pipe (52). A plurality of short pipes (6) are fixedly connected in communication between the gas supply pipe (52) and the blowing head (51). The rear side wall of the mounting plate (4) is fixedly connected with a blowing pump (7). The gas outlet end of the blowing pump (7) is in communication with the gas supply pipe (52).

3. The electrically permanent magnet chuck for welding and holding according to claim 1, characterized in that, The scraping assembly (8) comprises a moving frame (81). The rear side wall of the moving frame (81) is fixedly connected with a moving rod (82). The moving rod (82) and the moving frame (81) are both inverted L-shaped structures. The upper side wall of the mounting frame (1) is fixedly connected with a first linear module (9). The moving end of the first linear module (9) is fixedly connected with the lower end of the moving rod (82). The side wall of the mounting plate (4) is provided with a moving opening matched with the moving rod (82). The front side wall of the moving frame (81) is fixedly connected with a horizontal plate (10). The lower side wall of the horizontal plate (10) is fixedly connected with two cleaning electric push rods (11). The lower ends of the two cleaning electric push rods (11) are fixedly connected with a same hard scraper (12). The upper side wall of the moving frame (81) is fixedly connected with a first electric push rod (13). The moving end of the first electric push rod (13) penetrates through the moving frame (81) and is fixedly connected with a lifting frame (14). The lifting frame (14) is an inverted L-shaped structure. The rear side inner wall of the lifting frame (14) is fixedly connected with a fixed shaft (15). The rod wall of the fixed shaft (15) is rotatably connected with a cleaning sleeve (16) through a bearing. The outer wall of the cleaning sleeve (16) is pasted with a cleaning cotton layer (17). The surface of the lifting frame (14) is provided with a detection assembly (21).

4. The electrically conductive permanent magnetic chuck for welding and holding according to claim 3, characterized in that Each of the plurality of sensing assemblies (18) comprises a sensing cylinder (181). The sensing cylinder (181) is arranged in the interior of the fixed shaft (15). The upper side inner wall of the sensing cylinder (181) is fixedly connected with a tension sensor (182). The detection end of the tension sensor (182) is fixedly connected with a metal plate (19). The inner wall of the sensing cylinder (181) is fixedly connected with a supporting ring (20). The same spring is fixedly connected between the supporting ring (20) and the metal plate (19).

5. The electrically conductive permanent magnetic chuck for welding and holding according to claim 3, wherein The detection assembly (21) comprises 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) penetrates through the lifting frame (14) and is fixedly connected with a second linear module (212), the moving end of the second linear module (212) is fixedly connected with a small electric push rod (22), the moving end of the small electric push rod (22) is fixedly connected with a detection motor (23), the output end of the detection motor (23) is fixedly connected with a rotating plate (24), the lower side wall of the rotating plate (24) is fixedly connected with a detection probe (25), and the detection probe (25) is electrically connected with the controller in the control panel (3).

6. The electrically energized magnetic chuck for welding and holding according to claim 1, wherein, The lower side wall of the mounting rack (1) is fixedly connected with a plurality of hydraulic cylinders (26), the moving ends of the plurality of hydraulic cylinders (26) all extend out of the mounting rack (1) and are fixedly connected with a placing frame plate (27).

7. The electrically conductive permanent magnetic chuck for welding and holding according to claim 2, wherein The short pipe (6) is internally provided with a control valve (28), the front side wall of the mounting plate (4) is fixedly connected with a plurality of induction switches (29), and the induction switches (29) are electrically connected with the corresponding control valves (28).

8. The electrically powered magnetic chuck for welding and holding according to claim 3, characterized in that The upper side wall of the lifting frame (14) is fixedly connected with a plurality of longitudinally distributed visual sensors (30), and the visual sensors (30) are electrically connected with the controller in the control panel (3).

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