Component welding device for electrical engineering

Abstract

The invention discloses a component welding device for electrical engineering, and belongs to the technical field of electrical equipment manufacturing. The component welding device for the electrical engineering comprises a clamping die and further comprises a top plate, the top plate is provided with a first groove and a sliding groove, the length direction of the first groove is in the radial direction of a die cavity, the sliding groove is parallel to the first groove, and the clamping die is slidably connected into the sliding groove; a second groove is formed in the first polishing block, the second groove is communicated with the first groove, and the inner wall of the second groove is matched with the outer wall of the pin; the extrusion mechanism comprises a pressing plate, the bottom end of the pressing plate abuts against the upper side of the pin of the component, the bottom of the pressing plate drives the clamping die to slide along the sliding groove, and the outer wall of the pin is attached to the inner wall of the second groove. According to the component welding device for the electrical engineering, poor component welding caused by an oxide layer on the outer wall of the component pin can be prevented, so that the problem of pseudo soldering of the component is prevented, and the quality of a welded circuit board is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment manufacturing, and in particular to a component welding device for electrical engineering. Background Art

[0002] In the field of electrical engineering, welding, as a critical process for connecting electrical components, directly impacts the performance, reliability, and safety of electrical equipment. This is particularly true in offshore environments, where equipment must withstand harsh conditions such as high humidity, salt spray, and drastic temperature swings. These conditions place special demands on welding reliability that far exceed those encountered in terrestrial environments. As offshore engineering equipment evolves toward intelligent and high-powered capabilities, the trend toward miniaturization, lightweighting, and increased integration of electrical systems further exacerbates the technical challenges of welding.

[0003] When soldering components for electrical equipment, the cylindrical pins at both ends of the component need to be bent so they can be inserted into sockets on a circuit board. The component pins are then attached to the circuit board using solder using a welding machine. Existing welding devices for bending component pins consist of a mold and a robotic arm. The robotic arm clamps the component body, which is then squeezed into the mold. The mold cavity then deforms the component pins, completing the bending operation. Finally, the robotic arm inserts the component onto the circuit board, facilitating soldering by the welding machine.

[0004] However, during storage or transportation, an oxide film inevitably forms on the pin surfaces of electrical components. Traditional die-extrusion bending processes only alter the pin geometry without specifically treating the oxide layer on the pin surface. This hinders the metallurgical bond between the solder and the pin during subsequent soldering, significantly increasing the incidence of solder joint defects such as cold joints and desoldering. According to statistics, poor soldering due to the oxide layer accounts for over 30% of electronic assembly failures, directly impacting the reliability and service life of circuit boards.

[0005] Taking offshore wind turbine converters as an example, their core control circuit boards need to operate stably under extreme temperature fluctuations ranging from -40°C to 85°C, and are exposed to humid air containing chloride ions for long periods of time. Studies have shown that in this environment, the oxidation rate of copper pins is 3.2 times faster than in conventional environments, and the thickness of the oxide film can reach 0.8-1.2μm, far exceeding the critical value of 0.2μm required for solder wetting. The traditional mold bending process only changes the geometry of the pins and does not effectively treat the oxide layer, resulting in a reduction of more than 40% in the bonding strength of the welding interface, which is very likely to cause fatigue fracture under the action of alternating stress. Operation and maintenance data from a certain offshore wind farm show that converter failures caused by poor soldering account for 58% of the total failures, and the cost of repairing a single failure is as high as 2 million yuan. Summary of the Invention

[0006] The purpose of the present invention is to overcome the problems in the prior art and provide a component welding device for electrical engineering, which can prevent the oxide layer on the outer wall of the component pin from causing poor component welding, thereby preventing the problem of cold soldering of the component.

[0007] The present invention provides a device for welding components for electrical engineering, comprising a clamping die, wherein the clamping die is provided with a mold cavity for clamping the component to be welded, and the pins of the component are placed on the top of the clamping die, and the device is characterized in that it further comprises:

[0008] A top plate is provided at one end of the clamping die, the top end of the top plate being able to abut against the lower side of the pin of the component, the top plate being provided with a first groove and a slide groove, the length direction of the first groove being along the radial direction of the pin, the slide groove being provided parallel to the first groove, and the clamping die being slidably connected to the slide groove;

[0009] A first grinding block is provided at the top of the top plate, the first grinding block is used to grind the pins, the first grinding block is provided with a second groove, and the second groove is connected to the first groove;

[0010] The extrusion mechanism includes a pressing plate, which is arranged parallel to the top plate. The bottom end of the pressing plate abuts against the upper side of the pin of the component. When the pressing plate moves toward the bottom end of the top plate, the bottom of the pressing plate drives the clamping die to slide along the slide groove to squeeze the pin into the first groove and make the outer wall of the pin fit with the inner wall of the second groove.

[0011] Preferably, the pressure plate is also connected to a piston cylinder, the piston cylinder is connected to an air control circuit, the cylinder body of the piston cylinder is connected to the pressure plate, the piston of the piston cylinder is connected to a first connecting rod, the first connecting rod is provided with a second grinding block, the second grinding block is provided with a third groove, when the pin is squeezed into the first groove, the third groove fits with the side of the outer wall of the pin opposite to the second groove, and the piston drives the second grinding block to move along the length direction of the first groove through the first connecting rod.

[0012] Preferably, a suction cup is provided on the first connecting rod, and the suction cup is used to adsorb the main body of the component. A first air vent is provided on the piston of the piston cylinder, and one end of the first air vent is connected to the suction cup, and the other end of the first air vent is connected to a one-way valve, and the one-way valve is used for one-way communication from the first air vent to the inner cavity of the cylinder body.

[0013] Preferably, a first slider is slidably connected in the slide groove, the first slider is connected to the end of the die, a sliding hole is provided on the first slider, a guide rod is provided on one side of the top plate, the guide rod is arranged parallel to the slide groove, the first slider is slidably connected to the guide rod through the sliding hole, a first spring is provided on the guide rod, the first spring abuts against the first slider, and the first spring is used to apply an elastic force toward the top of the top plate to the first slider.

[0014] Preferably, the top of the top plate is provided with a sliding cavity along the radial direction of the first groove, the first grinding block is slidably connected in the sliding cavity, the first grinding block is connected to a second connecting rod, a second spring is provided outside the second connecting rod, the second spring abuts against the first grinding block, and the second spring is used to apply an elastic force to the first grinding block toward the side of the component body. Under the action of the elastic force of the second spring, the second groove on the first grinding block is tightly attached to the outer wall of the pin away from the component body.

[0015] Preferably, a sealed cavity is formed between the sliding cavity and the first grinding block, and a second air vent is provided on the second connecting rod, one end of the second air vent is connected to the sealed cavity, and the other end of the second air vent is connected to the air control circuit. When the sealed cavity is inflated, the air pressure in the sealed cavity drives the second groove of the first grinding block to press against the outer wall of the pin on the side away from the component body.

[0016] Preferably, one end of the second connecting rod is connected to the first grinding block, and the other end of the second connecting rod is provided with a stopper, which abuts against the side wall of the top plate, and is used to prevent the first grinding block from escaping from the sliding cavity.

[0017] Preferably, the cross section of the second groove is arc-shaped.

[0018] Preferably, the first grinding block is detachably connected to the second connecting rod.

[0019] Preferably, a wear-resistant coating is provided in the first groove.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: a device for welding components for electrical engineering of the present invention drives the pressure plate to move, and the pressure plate squeezes the pin downward. The pin is bent by the bending moment, and the pressure plate applies a downward squeezing force to the card die through the pin, thereby pushing the card die to slide downward along the length direction of the slide groove, and the pressure plate squeezes the pin into the first groove, thereby bending the pin 90 degrees. When the pin enters the first groove, the inner wall of the second groove on the first grinding block fits the outer wall of the pin, and the outer wall of the pin slides relative to the inner wall of the second groove, thereby utilizing the second groove of the grinding block to grind off the oxide layer on the outer wall of the pin, so that the outer wall of the pin can be polished during the process of bending the component pin, thereby preventing the oxide layer on the outer wall of the component pin from causing poor component welding, thereby preventing the problem of cold soldering of the component and ensuring the quality of the circuit board after welding.

[0021] The second grinding block grinds the other side of the pin's outer wall through the third groove. The combined grinding of the first and second grinding blocks can more thoroughly remove the oxide layer on the pin's outer wall, thereby ensuring a more secure connection between the component pin and the circuit board and further preventing the occurrence of cold solder joints. When the pressure plate is driven upward, the first slider drives the die upward under the elastic force of the first spring, thereby driving the component pin upward. The first grinding block then grinds the pin's outer wall again, thereby further thoroughly removing the oxide layer on the pin's outer wall and further preventing the occurrence of cold solder joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a first embodiment of the present invention;

[0023] Figure 2 Schematic diagram of the structure of the first working state of the second embodiment of the present invention;

[0024] Figure 3 Schematic diagram of the structure of the second working state of the second embodiment of the present invention;

[0025] Figure 4 Schematic diagram of the structure of the third working state of the second embodiment of the present invention;

[0026] Figure 5 It is a left-side structural schematic diagram of the present invention;

[0027] Figure 6 Schematic diagram of the cross-sectional structure of the AA surface of the present invention;

[0028] Figure 7 This is a schematic structural diagram of the first grinding block of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the second grinding block of the present invention.

[0030] Description of reference numerals:

[0031] 1. Components, 101. Die, 102. Pressure plate, 103. Pins, 104. Top plate, 105. First groove, 106. Slide groove, 107. First grinding block, 108. Second groove, 109. Robotic arm, 201. Cylinder, 202. Piston, 203. First connecting rod, 204. Second grinding block, 205. Third groove, 206. Suction cup, 301. First vent, 302. One-way valve, 401. First slider, 402. Guide rod, 403. First spring, 501. Slide chamber, 502. Second connecting rod, 503. Second spring, 601. Sealing chamber, 602. Second vent, 7. Stopper. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the appended drawings of the embodiments of the present invention. Figures 1-8 , clearly and completely describing the technical solutions of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments derived by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons having ordinary skills in the field to which the invention belongs. “Include” or “comprising” and similar words mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. “Inside”, “outside”, “upper”, “lower”, “far”, “near”, “front”, “back”, etc. are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0034] like Figures 1-8 As shown, the present invention provides a component welding device for electrical engineering, including a clamping die 101, wherein the clamping die 101 is provided with a mold cavity, the mold cavity is used to clamp the component 1 to be welded, and the pin 103 of the component 1 is placed on the top of the clamping die 101, and further includes: a top plate 104, a first grinding block 107 and an extrusion mechanism, the top plate 104 is provided at one end of the clamping die 101, the top of the top plate 104 can abut against the lower side of the pin 103 of the component 1, and a first groove 105 and a slide groove 106 are provided on the top plate 104, the length direction of the first groove 105 is along the radial direction of the pin 103, the slide groove 106 is arranged parallel to the first groove 105, and the clamping die 101 is slidably connected to the slide groove 10 6; a first grinding block 107 is provided at the top of the top plate 104, and the first grinding block 107 is used to grind the pin 103. A second groove 108 is provided on the first grinding block 107, and the second groove 108 is connected to the first groove 105; the extrusion mechanism includes a pressing plate 102, and the pressing plate 102 is arranged parallel to the top plate 104. The bottom end of the pressing plate 102 abuts against the upper side of the pin 103 of the component 1. When the pressing plate 102 moves toward the bottom end side of the top plate 104, the bottom of the pressing plate 102 drives the clamping die 101 to slide along the slide groove 106 to squeeze the pin 103 into the first groove 105 and make the outer wall of the pin 103 fit with the inner wall of the second groove 108.

[0035] The working principle of the above embodiment is briefly described below:

[0036] When the device is in use, the pressing plate 102 is connected to the mechanical arm 109, which is used to drive the pressing plate 102 to move, place the component 1 in the mold cavity of the card mold 101, and the pin 103 of the component 1 is placed on the top of the top plate 104. The mechanical arm 109 is controlled to move, and the mechanical arm 109 drives the pressing plate 102 to move until the pressing plate 102 is on the side of the top plate 104 close to the component 1, and the pressing plate 102 is parallel to the top plate 104. The mechanical arm 109 controls the pressing plate 102 to move downward until the bottom end of the pressing plate 102 abuts against the pin 103, and continues to drive the pressing plate 102 to move downward, and the pressing plate 102 squeezes the pin 103 downward. Because the top plate 104 abuts against the lower side of the pin 103, and the pressing plate 102 is on the side of the top plate 104 close to the component 1, the pressing plate 102 and the top plate 104 are staggered, and the gap between the pressing plate 102 and the top plate 104 The pin 103 is larger than the diameter of the pin 103. Under the extrusion of the pressure plate 102, the pin 103 is bent by the bending moment. The pressure plate 102 applies a downward extrusion force to the mold 101 through the pin 103, thereby pushing the mold 101 to slide downward along the length direction of the slide groove 106, thereby driving the component 1 in the mold cavity to move downward. The pressure plate 102 squeezes the pin 103 into the first groove 105, thereby bending the pin 103 90 degrees. When the pin 103 enters the first groove 105, the inner wall of the second groove 108 on the first grinding block 107 fits the outer wall of the pin 103. When the mold 101 and the component 1 slide downward along the length direction of the slide groove 106, the outer wall of the pin 103 slides relative to the inner wall of the second groove 108, thereby using the second groove 108 of the grinding block to grind the pin 103 to grind off the oxide layer on the outer wall of the pin 103. Then, the component 1 is lifted by controlling the robot arm 109 , and then the component 1 is inserted into the circuit board. Finally, the pins 103 of the component 1 are soldered onto the circuit board using soldering equipment.

[0037] The electrical engineering component welding device of the present invention can grind the outer wall of the pin 103 of the component 1 during the process of bending the pin 103 of the component 1, thereby preventing the oxide layer on the outer wall of the pin 103 of the component 1 from causing poor welding of the component 1, thereby preventing the problem of cold welding of the component 1 and ensuring the quality of the circuit board after welding.

[0038] On the basis of the above embodiment, in order to polish and remove the oxide layer on the outer wall of the pin 103 more thoroughly, the pin 103 of the component 1 is welded to the circuit board more firmly, and the problem of cold solder joint is further prevented.

[0039] like Figure 2-Figure 7As shown, the pressure plate 102 is also connected to a piston cylinder, and the piston cylinder is connected to an air control circuit. The cylinder body 201 of the piston cylinder is connected to the pressure plate 102, and the piston 202 of the piston cylinder is connected to a first connecting rod 203. The first connecting rod 203 is provided with a second grinding block 204, and the second grinding block 204 is provided with a third groove 205. When the pin 103 is squeezed into the first groove 105, the third groove 205 is fitted with the side of the outer wall of the pin 103 opposite to the second groove 108, and the piston 202 drives the second grinding block 204 to move along the length direction of the first groove 105 through the first connecting rod 203.

[0040] The robot arm 109 drives the pressing plate 102 to move downward, thereby squeezing the pin 103. When the pin 103 is squeezed into the first groove 105, the second groove 108 on the first grinding block 107 fits with the outer wall of one side of the pin 103, and the third groove 205 on the second grinding block 204 fits with the outer wall of the other side of the pin 103. When the pressing plate 102 drives the clamping die 101 to press down to the bottom end of the top plate 104, the air control circuit is controlled to operate, and the air control circuit inflates the piston cylinder, and the gas drives the piston 202 to move downward. , thereby driving the first connecting rod 203 to move downward, thereby driving the second grinding block 204 to move downward, the second grinding block 204 moves downward relative to the pin 103, and the second grinding block 204 grinds the outer wall of the other side of the pin 103 through the third groove 205. Under the joint grinding of the first grinding block 107 and the second grinding block 204, the oxide layer on the outer wall of the pin 103 can be polished and removed more thoroughly, so that the pin 103 of the component 1 is welded to the circuit board more firmly, further preventing the problem of cold soldering.

[0041] As a preferred solution, Figure 1-Figure 4 and Figure 6As shown, a suction cup 206 is provided on the first connecting rod 203, and the suction cup 206 is used to adsorb the main body of the component 1. A first air vent 301 is provided on the piston 202 of the piston cylinder. One end of the first air vent 301 is connected to the suction cup 206, and the other end of the first air vent 301 is connected to a one-way valve 302. The one-way valve 302 is used for one-way communication from the first air vent 301 to the inner cavity of the cylinder body 201. When the air control circuit inflates the cylinder body 201 of the piston cylinder, due to the one-way communication function of the one-way valve 302, the gas cannot pass through the one-way valve 302 and enter the first vent hole 301. The air pressure drives the piston 202 to move downward, and the piston 202 drives the first connecting rod 203 to move downward, thereby driving the second grinding block 204 to grind the pin 103. At the same time, the first connecting rod 203 also drives the suction cup 206 to move downward until the suction cup 206 fits with the main body of the component 1, and the pin 103 is also polished by the second grinding block 204. After polishing, the air control circuit is controlled to extract air from the cylinder 201, and the air pressure in the cylinder 201 is reduced. Due to the one-way connection of the one-way valve 302, the gas in the first vent 301 enters the cylinder 201 through the one-way valve 302, thereby forming a negative pressure at the suction cup 206, so that the suction cup 206 generates an adsorption force on the main body of the component 1, thereby adsorbing the component 1. At this time, the robot arm 109 is controlled to move, thereby adsorbing the component 1 so that the robot arm 109 can insert the component 1 into the socket on the circuit board.

[0042] As a preferred solution, Figure 2-Figure 7As shown, a first slider 401 is slidably connected in the slide groove 106, the first slider 401 is connected to the end of the clamping die 101, a sliding hole is provided on the first slider 401, a guide rod 402 is provided on one side of the top plate 104, the guide rod 402 is arranged parallel to the slide groove 106, the first slider 401 is slidably connected to the guide rod 402 through the sliding hole, and a first spring 403 is provided on the guide rod 402, the first spring 403 is in contact with the first slider 401, and the first spring 403 is used to apply an elastic force to the first slider 401 toward the top of the top plate 104. When the robot arm 109 drives the pressure plate 102 to squeeze the pins 103 downward, the squeezing force is transmitted to the clamping die 101, thereby driving the clamping die 101 to move downward, and the clamping die 101 drives the first slider 401 to move downward, and the guide rod 402 and the slide groove 106 guide the sliding of the first slider 401 to prevent the clamping die 101 from deflecting, thereby preventing the second groove 108 on the first slider 401 from no longer being in the same radial direction as the pins 103, and preventing the edge of the second groove 108 from generating a shear force on the second pair of pins 103 to cut the pins 103, and when the first slider When the block 401 moves downward, the first slider 401 squeezes the first spring 403. When the robot arm 109 drives the pressure plate 102 to move upward, under the action of the elastic force of the first spring 403, the first slider 401 drives the clamping die 101 to move upward, thereby driving the pin 103 of the component 1 to move upward. The pin 103 moves upward relative to the first grinding block 107, so that the first grinding block 107 is used to grind the outer wall of the pin 103 again, thereby improving the thoroughness of the grinding of the oxide layer on the outer wall of the pin 103 and further preventing the problem of cold solder joints.

[0043] As a preferred solution, Figure 2-Figure 4 and Figure 7As shown, the top of the top plate 104 is provided with a sliding cavity 501 radially along the first groove 105, the first grinding block 107 is slidably connected in the sliding cavity 501, the first grinding block 107 is connected with a second connecting rod 502, and the second connecting rod 502 is provided with a second spring 503 outside, the second spring 503 is in contact with the first grinding block 107, and the second spring 503 is used to apply an elastic force to the first grinding block 107 toward the side of the component 1 main body. Under the action of the elastic force of the second spring 503, the second groove 108 on the first grinding block 107 is tightly attached to the outer wall of the pin 103 away from the component 1 main body. When the pin 103 is squeezed into the first groove 105, the outer wall of the pin 103 fits into the second groove 108 on the first grinding block 107, and the outer wall of the pin 103 applies a thrust toward the sliding cavity 501 to the first grinding block 107. The first grinding block 107 squeezes the second spring 503 in the sliding cavity 501. After being squeezed, the second spring 503 applies an elastic force toward the pin 103 to the first grinding block 107, thereby ensuring that the inner wall of the second groove 108 is in close contact with the outer wall of the pin 103, thereby ensuring the first grinding block 107 to grind the oxide layer on the outer wall of the pin 103, thereby further ensuring the effect of grinding and removing the oxide layer.

[0044] As a preferred solution, Figure 2-Figure 4 and Figure 7 As shown, a sealed cavity 601 is formed between the sliding cavity 501 and the first grinding block 107. A second vent hole 602 is provided on the second connecting rod 502. One end of the second vent hole 602 is connected to the sealed cavity 601, and the other end of the second vent hole 602 is connected to the pneumatic control circuit. When the sealed cavity 601 is inflated, the air pressure within the sealed cavity 601 drives the second groove 108 of the first grinding block 107 to press against the outer wall of the pin 103 on the side away from the main body of the component 1. While the first grinding block 107 is grinding the pin 103, the air pressure within the sealed cavity 601 is controlled by controlling the operation of the pneumatic control circuit. By changing the air pressure within the sealed cavity 601, the squeezing force applied by the first grinding block 107 to the outer wall of the pin 103 can be changed. Therefore, the grinding intensity of the first grinding block 107 on the pin 103 can be changed according to the thickness of the oxide layer on the outer wall of the pin 103, thereby ensuring that the oxide layer is completely removed.

[0045] As a preferred solution, Figure 7 As shown, one end of the second connecting rod 502 is connected to the first grinding block 107, and the other end of the second connecting rod 502 is provided with a stopper 7, which abuts against the side wall of the top plate 104 and is used to prevent the first grinding block 107 from escaping from the sliding cavity 501. By providing the stopper 7, the elastic force of the second spring 503 is prevented from pushing the first grinding block 107 out of the sliding cavity 501, thereby ensuring the normal operation of the entire device.

[0046] As a preferred solution, Figure 8 As shown, the cross section of the second groove 108 is an arc shape. Since the cross section of the pin 103 of the component 1 is mostly circular, setting the cross section of the second groove 108 to be an arc shape can make the second groove 108 of the first grinding block 107 fit as closely as possible to the outer wall of the pin 103, thereby ensuring the grinding effect of the first grinding block 107.

[0047] As a preferred solution, Figure 7 As shown, the first grinding block 107 is detachably connected to the second connecting rod 502. The detachable connection between the first grinding block 107 and the second connecting rod 502 facilitates the replacement of the first grinding block 107, thereby ensuring the sharpness of the first grinding block 107 and further ensuring the grinding effect of the oxide layer on the outer wall of the pin 103.

[0048] As a preferred solution, Figure 1 As shown, a wear-resistant coating is provided in the first groove 105. By providing the wear-resistant coating in the first groove 105, the wear resistance of the first groove 105 can be improved, thereby ensuring the service life of the entire device.

[0049] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A device for welding components for electrical engineering, comprising a clamping die (101), wherein the clamping die (101) is provided with a die cavity, the die cavity being used to clamp the component (1) to be welded, the pin (103) of the component (1) being placed on the top of the clamping die (101), characterized in that: Also includes: A top plate (104) is provided at one end of the clamping die (101), the top end of the top plate (104) can abut against the lower side of the pin (103) of the component (1), and a first groove (105) and a slide groove (106) are provided on the top plate (104), the length direction of the first groove (105) is along the radial direction of the pin (103), the slide groove (106) is arranged parallel to the first groove (105), and the clamping die (101) is slidably connected in the slide groove (106); A first grinding block (107) is provided at the top of the top plate (104), the first grinding block (107) is used to grind the pin (103), and a second groove (108) is provided on the first grinding block (107), and the second groove (108) is communicated with the first groove (105); The extrusion mechanism comprises a pressing plate (102), wherein the pressing plate (102) is arranged parallel to the top plate (104), and the bottom end of the pressing plate (102) abuts against the upper side of the pin (103) of the component (1). When the pressing plate (102) moves toward the bottom end side of the top plate (104), the bottom of the pressing plate (102) drives the clamping die (101) to slide along the sliding groove (106), so as to squeeze the pin (103) into the first groove (105) and make the outer wall of the pin (103) fit with the inner wall of the second groove (108).

2. The electrical engineering component welding device according to claim 1, wherein: The pressure plate (102) is also connected to a piston cylinder, which is connected to an air control circuit. The cylinder body (201) of the piston cylinder is connected to the pressure plate (102), and the piston (202) of the piston cylinder is connected to a first connecting rod (203). The first connecting rod (203) is provided with a second grinding block (204), and the second grinding block (204) is provided with a third groove (205). When the pin (103) is squeezed into the first groove (105), the third groove (205) fits with the side of the outer wall of the pin (103) opposite to the second groove (108), and the piston (202) drives the second grinding block (204) to move along the length direction of the first groove (105) through the first connecting rod (203).

3. The electrical engineering component welding device according to claim 2, wherein: A suction cup (206) is provided on the first connecting rod (203), and the suction cup (206) is used to adsorb the main body of the component (1). A first vent hole (301) is provided on the piston (202) of the piston cylinder, and one end of the first vent hole (301) is connected to the suction cup (206), and the other end of the first vent hole (301) is connected to a one-way valve (302), and the one-way valve (302) is used for one-way communication from the first vent hole (301) to the inner cavity of the cylinder body (201).

4. The electrical engineering component welding device according to claim 1, wherein: A first slider (401) is slidably connected in the slide groove (106), the first slider (401) is connected to the end of the clamping die (101), a sliding hole is provided on the first slider (401), a guide rod (402) is provided on one side of the top plate (104), the guide rod (402) is arranged parallel to the slide groove (106), the first slider (401) is slidably connected to the guide rod (402) through the sliding hole, a first spring (403) is provided on the guide rod (402), the first spring (403) is in contact with the first slider (401), and the first spring (403) is used to apply an elastic force to the first slider (401) toward the top of the top plate (104).

5. The electrical engineering component welding device according to claim 1, wherein: The top end of the top plate (104) is provided with a sliding cavity (501) radially along the first groove (105); the first grinding block (107) is slidably connected in the sliding cavity (501); the first grinding block (107) is connected with a second connecting rod (502); a second spring (503) is provided outside the second connecting rod (502); the second spring (503) abuts against the first grinding block (107); the second spring (503) is used to apply an elastic force toward the side of the component (1) body to the first grinding block (107); under the action of the elastic force of the second spring (503), the second groove (108) on the first grinding block (107) is in close contact with the outer wall of the pin (103) away from the component (1) body.

6. The electrical engineering component welding device according to claim 5, characterized in that: A sealed cavity (601) is formed between the sliding cavity (501) and the first grinding block (107); a second vent hole (602) is provided on the second connecting rod (502); one end of the second vent hole (602) is connected to the sealed cavity (601); and the other end of the second vent hole (602) is connected to the air control circuit; when the sealed cavity (601) is inflated, the air pressure in the sealed cavity (601) drives the second groove (108) of the first grinding block (107) to be pressed against the outer wall of the pin (103) on the side away from the main body of the component (1).

7. The electrical engineering component welding device according to claim 5, wherein: One end of the second connecting rod (502) is connected to the first grinding block (107), and the other end of the second connecting rod (502) is provided with a stopper (7), and the stopper (7) abuts against the side wall of the top plate (104), and the stopper (7) is used to prevent the first grinding block (107) from escaping from the sliding cavity (501).

8. The electrical engineering component welding device according to claim 1, wherein: The cross section of the second groove (108) is arc-shaped.

9. The electrical engineering component welding device according to claim 5, wherein: The first grinding block (107) is detachably connected to the second connecting rod (502).

10. The electrical engineering component welding device according to claim 1, wherein: A wear-resistant coating is provided in the first groove (105).

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