Axial diode pin welding apparatus

Abstract

The application discloses an axial diode pin welding device and belongs to the technical field of axial diode production.The axial diode pin welding device comprises a welding platform, through-slots are formed in the top surface of the welding platform on both sides, a spot welding machine is installed on the top of a multi-point surrounding welding assembly, three welding heads of the spot welding machine are installed through wires, the welding heads are used for welding diode pins, diode fixing, moving and rotating assemblies are installed on both sides of the multi-point surrounding welding assembly, welding heat is evenly distributed in the contact area of the pins, and welding defects caused by uneven heating during the welding process are avoided.The diode fixing, moving and rotating assemblies and the multi-point surrounding welding assembly are adopted, so that the clamping force, alignment accuracy, welding angle and solder coverage range of every two diode pins are completely consistent, and quality fluctuations caused by differences in manual operation habits and fatigue hand shaking are avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of axial diode production, and particularly relates to an axial diode pin welding device. BACKGROUND

[0002] The axial diode is an electronic component, and its structural feature is that the pins of the diode are arranged in an axial direction. The diode is often used as a rectifier, a switching element, a protection element, etc. in a circuit. In some circuit designs, two axial diodes may need to be connected in parallel or series. When the two diodes are connected in parallel, the load can be shared, and the voltage resistance and current handling capacity of the circuit can be improved. When the two diodes are connected in series, the working voltage of the circuit can be increased or the flow of current can be limited. The diodes are often used in high-voltage protection and current limiting circuits. In application occasions that require high mechanical strength and anti-interference capability, the pins of multiple diodes are welded to not only ensure electrical connection but also provide certain structural support.

[0003] The pins of the diode are usually made of metal wires. The pins are prone to softening when welded at high temperatures. In the prior art, two axial diodes are often aligned manually before spot welding. The solder solidifies from a liquid state to generate a shrinkage force after spot welding. The lead wire pin is weak in stress resistance and cannot resist the shrinkage force. If there is a slight deviation when the two pins are aligned, the shrinkage force will directly pull the lead wire pin, causing the pin to bend to one side. This not only affects the subsequent plug-in assembly of the diode (the diode cannot be inserted into the PCB hole), but also causes hidden stress in the welding point. The welding point is prone to cracking due to vibration and temperature cycling during long-term use. Since the pin is soft, the welding point may not be firm during spot welding. The lead wire pin is prone to deformation during the heating process, resulting in insufficient strength of the welding point, and even problems such as disbonding and loosening. SUMMARY

[0004] The technical problem to be solved by the application is to overcome the shortcomings of the prior art and provide an axial diode pin welding device.

[0005] The technical solution adopted to solve the above technical problem is as follows: an axial diode pin welding device, comprising a welding platform, and through grooves are formed in the top surface of the welding platform on both sides, a multi-point ring type welding assembly is fixedly connected to the top surface of the welding platform between the two through grooves, which is used to avoid local overheating of the pin, reduce the risk of bending and deformation of the pin due to softening, improve the welding success rate, and a spot welding machine is installed at the top of the multi-point ring type welding assembly, the spot welding machine is installed with three welding heads through wires, which is used to weld the pins of the diode, and diode fixing, moving and rotating assemblies are installed on both sides of the multi-point ring type welding assembly, which is used to evenly distribute the welding heat in the contact area of the pin to avoid welding defects caused by uneven heating during the welding process.

[0006] Through the above technical scheme, higher welding precision, quality and production efficiency are provided, and the application of the automatic system effectively reduces the labor cost and reduces the defects in the production process, and improves the consistency and repeatability.

[0007] Further, the multi-point surrounding welding assembly comprises a welding support fixedly connected with the welding platform, and the top and bottom of the welding support are provided in an open state, and the spot welding machine is installed at the top opening of the welding support, three sliding grooves are formed through the two sides of the welding support, and a first sliding groove and a second sliding groove are formed through the two sides of the welding support in a mirror image, and the length of the second sliding groove is greater than that of the first sliding groove, and the first sliding groove and the second sliding groove are provided in a fan-shaped structure, and a first sliding block, a second sliding block and a third sliding block are respectively arranged in the first sliding groove, the second sliding groove and the third sliding groove, and the first sliding block, the second sliding block and the third sliding block are slidably connected with the welding support, and the first sliding block, the second sliding block and the third sliding block are clamped with the welding support.

[0008] Through the above technical scheme, the three sliding blocks can accurately control the movement path of the welding head, and ensure that the butt joint point of the welding head and the diode pin is accurately aligned, which can avoid the deviation and asymmetry that may occur during manual operation, thereby improving the welding precision.

[0009] Further, the first sliding block is rotatably connected with a first connecting rod and a second connecting rod away from the inside of the welding support, the first connecting rod is rotatably connected with the second sliding block away from the first sliding block, and the two second connecting rods are rotatably connected with the third sliding block away from the first sliding block, the first connecting rod and the second connecting rod are provided in an M-shaped structure, and the two second connecting rods are rotatably connected with each other away from the first sliding block, hydraulic rods are installed on the two sides of the welding support, and the connecting pieces are rotatably connected with the two second connecting rods.

[0010] Through the above technical scheme, the pin and the welding point can be heated more uniformly, and uniform heating helps to form a more firm and stable welding point, reducing the problem of virtual welding or poor welding quality caused by uneven heating.

[0011] Further, a through hole in a semicircular shape is formed through the bottom of the welding support, the extension lines of the first sliding groove, the second sliding groove and the third sliding groove coincide with the center of the through hole, three supporting rods are arranged in the welding support, the three supporting rods are fixedly connected with the welding head, and the welding head is located at the center line of the supporting rods.

[0012] Through the technical scheme, the rotation and opposite movement of the two axial diodes help to more evenly distribute heat and exert force, avoid overheating or uneven temperature on one side, and reduce the possibility of cold welding or false welding, and meanwhile, the synchronous work of the three welding heads can ensure the uniform distribution of heat at the welding points, thereby improving the welding quality and stability.

[0013] Further, the polar diode fixed movement and rotation assembly comprises two T-shaped frames fixedly connected with the welding platform, the top of the T-shaped frame is provided in a tubular structure, the inside of the top tubular body of the T-shaped frame is provided in a hollow structure, a rectangular slot is formed through the bottom of the top tubular body of the T-shaped frame, two limiting strips are welded in the inside of the top tubular body of the T-shaped frame, and a sliding rod is slidingly connected in the inside of the top tubular body of the T-shaped frame, limiting grooves are formed on the two sides of the sliding rod, the limiting strips are located in the limiting grooves, the sliding rod is slidingly connected with the T-shaped frame and the limiting strips, the limiting strips limit the sliding rod, and a plurality of tooth grooves are formed at the bottom of the limiting strips.

[0014] Through the technical scheme, the welding process is automated, manual intervention is reduced, the burden on the operator is reduced, and the production efficiency and the repeatability of the operation are further improved.

[0015] Further, the sliding rod is provided with a gear, the gear is located in the inside of the T-shaped frame, the gear is rotationally connected with the T-shaped frame, the meshing teeth of the gear are located in the tooth grooves, the gear is engaged and driven with the sliding rod through the tooth grooves, a servo motor is installed on one side of the bottom of the T-shaped frame, the output end of the servo motor is rotationally connected with the T-shaped frame, and the penetrating end of the servo motor is fixedly connected with the gear.

[0016] Through the technical scheme, the pin can be uniformly stressed during the welding process, and overheating or excessive pressure on one side is avoided, thereby effectively reducing the risk of pin deformation, especially after the pin contact point is rotated, the probability of pin deformation is reduced, and the stability of the welding point is ensured.

[0017] Further, the middle part of the second synchronous wheel is provided in a hollow structure, a plurality of protrusions are symmetrically and circumferentially arranged and welded on the middle part of the second synchronous wheel, a spline shaft is rotationally connected to one end of the sliding rod, the spline shaft is slidingly connected with the second synchronous wheel, the protrusions are located in the grooves of the spline shaft, the protrusions limit the spline shaft, a fixing frame in a tubular structure is installed at the end of the spline shaft away from the sliding rod, and the tubular center of the fixing frame coincides with the original point of the through hole.

[0018] Through the technical scheme, the butt joint and positioning of the pin can be quickly and accurately completed, the welding process is not limited by manual operation, the overall welding speed is improved, and the synchronous adjustment of the two pins can complete the processing of multiple welding points in a short time.

[0019] Further, the fixing frame is penetrated and slidably connected with a plurality of limiting rods arranged in a circumferentially symmetrical manner at one end away from the spline rod, and the limiting rods are fixedly connected with rubber plates at one end, and an axial diode is clamped between the plurality of rubber plates, a spring rod is arranged on one side of the limiting rod, and the spring rod is fixedly connected with the rubber plate at one end and slidably connected with the fixing frame at the other end, and the spring away from the rubber plate at one end is fixedly connected with the fixing frame.

[0020] Through the technical scheme, the positioning and angle of the pin in each welding process are consistent, so that the welding quality of each batch of products is consistent, and welding defects caused by operation differences are reduced.

[0021] Further, the welding platform is rotatably connected with two first synchronous wheels at the bottom, a connecting rod is arranged between the two first synchronous wheels, and the connecting rod is rotatably connected with the welding platform, the connecting rod is fixedly connected with the first synchronous wheel at the penetrating end, a rotary motor is installed on one side of the welding platform bottom, the output end of the rotary motor is rotatably connected with the welding platform, and the penetrating end of the rotary motor is fixedly connected with one of the first synchronous wheels, a synchronous belt is transmissionally connected between the first synchronous wheel and the second synchronous wheel, and the synchronous belt is located in the through groove.

[0022] Through the technical scheme, stress concentration caused by repeated manual bending of the soft pin is avoided, and the connection of the soft pin and the internal chip lead is more stable.

[0023] The beneficial effects of the present application are as follows:

[0024] By adopting the multi-point surrounding type welding assembly, the hydraulic rod operates to push the connecting piece to move in the vertical direction, so as to drive the third sliding block to slide in the third sliding groove, when the third sliding block moves, the two second connecting rods on the third sliding block rotate relative to each other with the connection position of the third sliding block as the origin, so as to pull the first sliding blocks on the two sides to slide in the first sliding groove, when the first sliding block slides, the first connecting rod rotates towards the second connecting rod with the connection position of the second connecting rod as the origin, so as to pull the second sliding block to slide in the second sliding groove, so that the three supporting rods and the welding heads connected therewith move towards the center of the through hole, the abutting points are from "two sides plus top", multi-dimensional synchronous heating is realized, the solder (such as tin-lead solder) is uniformly melted and filled in the gap, cold welding (solder does not flow fully) caused by manual welding "one side first melting, one side later melting" is avoided, and the welding point conduction resistance fluctuation frequency is reduced.

[0025] (2) The application adopts the pole tube fixed movement rotating assembly, the servo motor runs to drive the gear to rotate, under the action of the gear groove, the slide rod slides in the tube at the top of the T-shaped frame, under the cooperation of the limiting strip, the spline rod slides in the No. 2 synchronous wheel, so that the two axial diodes move oppositely, the pins of the two axial diodes are aligned, the rotating motor at the bottom of the welding platform runs to make the two No. 1 synchronous wheels rotate synchronously, so that the two synchronous belts are driven synchronously, the two No. 2 synchronous wheels are driven to rotate synchronously, so that the fixed frame and the axial diode connected to one end of the spline rod and other assemblies are rotated synchronously, the diode rotates synchronously during welding, and the three welding heads are synchronized to realize 360-degree full-circle welding (manual spot welding can only be locally welded). This way makes the solder evenly wrap the pin butt joint, avoids "local solder accumulation and local missing welding", and prevents the soft pin from being crushed due to sudden strength reduction caused by local high temperature (such as sudden temperature rise at a single point), and protects the internal chip of the diode from being damaged due to local overheating. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the first perspective structural schematic diagram of the application;

[0027] Figure 2 is the second perspective structural schematic diagram of the application;

[0028] Figure 3 is the third perspective structural schematic diagram of the application;

[0029] Figure 4 is the fourth perspective structural schematic diagram of the application;

[0030] Figure 5 is the A enlarged structural schematic diagram of Figure 1 ;

[0031] Figure 6 is the B enlarged structural schematic diagram of Figure 2 ;

[0032] Figure 7 is the C enlarged structural schematic diagram of Figure 3 ;

[0033] Figure 8 is the pole tube fixed movement rotating assembly structural schematic diagram of the application;

[0034] Figure 9 is the gear and slide rod connection structural schematic diagram of the application;

[0035] Figure 10 is the spline rod and slide rod connection structural schematic diagram of the application;

[0036] Figure 11 This is a schematic diagram of the No. 2 synchronous pulley structure of the present invention.

[0037] Reference numerals: 11. Welding platform; 12. Spot welding machine; 13. Wire; 14. Welding head; 15. Through slot; 16. Axial diode; 2. Multi-point surrounding welding assembly; 21. Welding bracket; 22. No. 1 slide; 23. No. 2 slide; 24. No. 3 slide; 25. No. 1 slider; 26. No. 2 slider; 27. No. 3 slider; 28. Hydraulic rod; 29. ​​Connector; 210. No. 1 connecting rod; 211. No. 2 connecting rod; 212. Through hole; 213. Support 3. Support rod; 4. Electrode fixing, moving and rotating assembly; 5. Rotary motor; 6. Synchronous pulley No. 1; 7. Synchronous belt; 8. Connecting rod; 9. Synchronous pulley No. 2; 10. T-shaped frame; 11. Spline rod; 12. Fixing frame; 13. Spring rod; 14. Limiting rod; 15. Rubber plate; 26. Gear; 37. Servo motor; 48. Slide rod; 59. Limiting strip; 60. Rectangular groove; 11. Protrusion; 12. Limiting groove; 33. Gear groove. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0039] like Figures 1-6The axial diode pin welding device of the embodiment comprises a welding platform 11, and through grooves 15 are arranged on both sides of the top surface of the welding platform 11, a multi-point surrounding welding assembly 2 is fixedly connected to the top surface of the welding platform 11 between the two through grooves 15, which is used to avoid local overheating of the pin and reduce the risk of bending and deformation of the pin due to softening, thereby improving the welding success rate. The multi-point surrounding welding assembly 2 comprises a welding support 21 fixedly connected to the welding platform 11, and the top and bottom of the welding support 21 are provided in an open state, which provides higher welding precision, quality and production efficiency. At the same time, the application of the automatic system effectively reduces the labor cost and reduces the defects in the production process, improves the consistency and repeatability. At the same time, a spot welding machine 12 is installed at the top opening of the welding support 21, three-way sliding grooves 24 are arranged on both sides of the welding support 21, and a first sliding groove 22 and a second sliding groove 23 are arranged on both sides of the three-way sliding grooves 24 in a mirror image, a through hole 212 in a semicircular shape is arranged at the bottom of the welding support 21, and the extension lines of the first sliding groove 22, the second sliding groove 23 and the three-way sliding grooves 24 coincide with the center of the through hole 212, which can quickly and accurately complete the butt joint and positioning of the pin, so that the welding process is not limited by human operation, and the overall welding speed is improved. In addition, the synchronous adjustment of the two pins can complete the processing of multiple welding points in a short time, and three supporting rods 213 are arranged in the welding support 21.

[0040] As Figures 2-6As shown, three support rods 213 are fixedly installed with the welding head 14, and the welding head 14 is located at the center line of the support rod 213, and the three support rods 213 are fixedly connected with two second sliding blocks 26 and one third sliding block 27 respectively, and the length of the second sliding groove 23 is greater than that of the first sliding groove 22, and the first sliding groove 22 and the second sliding groove 23 are integrally arranged in a fan-shaped structure, and the first sliding groove 22, the second sliding groove 23 and the third sliding groove 24 are respectively provided with the first sliding block 25, the second sliding block 26 and the third sliding block 27, and the first sliding block 25 is rotatably connected with the first connecting rod 210 and the second connecting rod 211 away from the inner side of the welding support 21, and the first connecting rod 210 is rotatably connected with the second sliding block 26 away from the first sliding block 25, and the two second connecting rods 211 are rotatably connected with the third sliding block 27 away from the first sliding block 25, so that the three sliding blocks can accurately control the movement path of the welding head 14, and ensure that the butt joint point of the welding head 14 and the diode pin is accurately aligned, which can avoid the deviation and asymmetry that may occur during manual operation, thereby improving the welding precision, and the first connecting rod 210 and the second connecting rod 211 are integrally arranged in an M-shaped structure, and the two second connecting rods 211 are rotatably connected with each other away from the first sliding block 25, and the hydraulic rod 28 is installed on both sides of the welding support 21, and the connecting piece 29 is fixedly connected with the extension end of the hydraulic rod 28, and the connecting piece 29 is rotatably connected with the two second connecting rods 211, and the first sliding block 25, the second sliding block 26 and the third sliding block 27 are slidably connected with the welding support 21, and the first sliding block 25, the second sliding block 26 and the third sliding block 27 are clamped with the welding support 21, and the multi-point surrounding welding assembly 2 is installed with the spot welding machine 12 at the top, which can heat the pin and the welding point more uniformly, and uniform heating helps to form a more firm and stable welding point, reducing the problem of virtual welding or poor welding quality caused by uneven heating, and the spot welding machine 12 is installed with three welding heads 14 through wires 13 for welding the diode pin.

[0041] As Figures 1-11As shown, the multi-point circumferential welding assembly 2 is provided with a polar pipe fixed moving and rotating assembly 3 on both sides, which is used to uniformly distribute welding heat in the contact area of the pipe pin, so as to avoid welding defects caused by uneven heating during welding. The polar pipe fixed moving and rotating assembly 3 includes two T-shaped frames 36 fixedly connected with the welding platform 11, and the top of the T-shaped frame 36 is provided in a tubular structure, which ensures that the positioning and angle of the pipe pin during each welding process are consistent, so that the welding quality of each batch of products remains consistent, and the welding defects caused by operation differences are reduced. The rotation and opposite movement of the two axial diodes 16 help to more evenly distribute heat and apply force, avoid overheating or uneven temperature on one side, and reduce the possibility of cold welding or false welding. At the same time, the three welding heads 14 work synchronously, which can ensure the uniform distribution of heat at the welding point, thereby improving the quality and stability of welding. At the same time, the top of the T-shaped frame 36 is provided in a hollow structure, the bottom of the tube body at the top of the T-shaped frame 36 is provided with a rectangular slot 316, and two limiting strips 315 are welded inside the tube body at the top of the T-shaped frame 36. At the same time, the tube body at the top of the T-shaped frame 36 is provided with a sliding rod 314, and the bottom of the sliding rod 314 is provided with a gear 312, and the gear 312 is located inside the T-shaped frame 36. At the same time, the gear 312 is rotatably connected with the T-shaped frame 36. The pipe pin can be uniformly stressed during welding, avoiding excessive pressure or heating on one side, thereby effectively reducing the risk of pipe pin deformation, especially after the pipe pin contact point is rotated, the probability of pipe pin deformation is reduced, and the stability of the welding point is ensured.

[0042] As Figures 2-11As shown, the meshing teeth of the gear 312 are located in the tooth groove 319, and the gear 312 is engaged and driven with the slide rod 314 through the tooth groove 319, and a servo motor 313 is installed on one side of the bottom of the T-shaped frame 36, the output end of the servo motor 313 is rotatably connected with the T-shaped frame 36, and the penetrating end of the servo motor 313 is fixedly connected with the gear 312, one end of the T-shaped frame 36 is rotatably connected with a second synchronous wheel 35, two first synchronous wheels 32 are rotatably connected with the bottom of the welding platform 11, and a connecting rod 34 is arranged between the two first synchronous wheels 32, and the connecting rod 34 is rotatably connected with the welding platform 11, the penetrating end of the connecting rod 34 is fixedly connected with the first synchronous wheel 32, and a rotary motor 31 is installed on one side of the bottom of the welding platform 11, the output end of the rotary motor 31 is rotatably connected with the welding platform 11, and the penetrating end of the rotary motor 31 is fixedly connected with one of the first synchronous wheels 32, which realizes the automation of the welding process, reduces manual intervention, reduces the burden on the operator, and further improves the production efficiency and the repeatability of the operation. The first synchronous wheel 32 and the second synchronous wheel 35 are drivingly connected with a synchronous belt 33, and the synchronous belt 33 is located in the through groove 15, the second synchronous wheel 35 is hollow in the middle, and a plurality of protrusions 317 are symmetrically arranged and arranged in the circumferential direction in the middle of the second synchronous wheel 35, one end of the slide rod 314 is rotatably connected with a spline rod 37, and the spline rod 37 is slidingly connected with the second synchronous wheel 35, and the protrusions 317 are located in the grooves of the spline rod 37, and the protrusions 317 limit the spline rod 37, and the spline rod 37 is rotatably connected with a fixing frame 38 in the form of a tubular structure at the end away from the slide rod 314.

[0043] As shown, Figures 3-11 The penetrating end of the fixing frame 38 away from the spline rod 37 is slidingly connected with a plurality of limiting rods 310 symmetrically arranged and arranged in the circumferential direction, and one end of the limiting rod 310 is fixedly connected with a rubber plate 311, and the axial diode 16 is clamped between the plurality of rubber plates 311, a spring rod 39 is arranged on one side of the limiting rod 310, and one end of the spring rod 39 is fixedly connected with the rubber plate 311, and the other end of the spring rod 39 is slidingly connected with the fixing frame 38, and the spring in the spring rod 39 is fixedly connected with the fixing frame 38 at the end away from the rubber plate 311, and the tubular center of the fixing frame 38 coincides with the origin of the through hole 212, and the second synchronous wheel 35 is located on the same straight line as the through groove 15, limiting grooves 318 are formed on both sides of the slide rod 314, and the limiting strips 315 are located in the limiting grooves 318, and the slide rod 314 is slidingly connected with the T-shaped frame 36 and the limiting strips 315, and the limiting strips 315 limit the slide rod 314, and a plurality of tooth grooves 319 are formed at equal distances on the bottom of the limiting strips 315, which avoids stress concentration caused by repeated manual bending of the hose feet, and the connection between the hose feet and the internal chip leads is more stable.

[0044] The working principle of the embodiment is as follows: before welding, the connecting ends of the two fixing frames 38 and the spline bars 37 are located outside the through hole 212, the two axial diodes 16 are respectively placed between the rubber plates 311 in the two fixing frames 38, the spring bars 39 and the limiting bars 310 slide out of the fixing frames 38, and the axial diodes 16 are clamped and limited.

[0045] Then the servo motor 313 operates to drive the gear 312 to rotate, under the action of the tooth groove 319, the sliding bar 314 slides in the pipe at the top of the T-shaped frame 36, the sliding bar 314 drives the spline bar 37 to slide in the second synchronous wheel 35 under the cooperation of the limiting strip 315, so that the two axial diodes 16 move oppositely, and the pins of the two axial diodes 16 are aligned.

[0046] When the pins of the two axial diodes 16 are aligned, the rotary motor 31 at the bottom of the welding platform 11 operates to drive one of the first synchronous wheels 32 to rotate, and under the action of the connecting rod 34, the two first synchronous wheels 32 can synchronously rotate, so that the two synchronous belts 33 synchronously drive, the two second synchronous wheels 35 simultaneously rotate, under the limiting action of the protrusion 317 in the middle of the second synchronous wheel 35, the spline bar 37 rotates, and then the spline bar 37 synchronously rotates with the fixing frame 38 and the axial diode 16 connected to one end of the spline bar 37.

[0047] Then the hydraulic rods 28 on both sides of the welding support 21 operate to push the connecting pieces 29 to move in the vertical direction, so as to drive the third sliding blocks 27 to slide in the third sliding grooves 24, when the third sliding blocks 27 move, the two second connecting rods 211 on the third sliding blocks 27 rotate oppositely with the connection positions of the third sliding blocks 27 as the centers, so as to pull the first sliding blocks 25 on both sides to slide in the first sliding grooves 22, when the first sliding blocks 25 slide, the first connecting rods 210 rotate towards the second connecting rods 211 with the connection positions of the second connecting rods 211 as the centers, so as to pull the second sliding blocks 26 to slide in the second sliding grooves 23, and promote the three supporting rods 213 and the welding heads 14 connected thereto to move to the center of the through hole 212.

[0048] Then the spot welding machine 12 operates to weld the pins of the two aligned and rotated axial diodes 16 under the action of the wires 13, after the welding is completed, the spot welding machine 12 stops operating, the hydraulic rods 28 and the servo motor 313 operate reversely, so as to move the three welding heads 14 to the opposite direction of the through hole 212, and then the two axial diodes 16 after the welding are taken out.

[0049] Through repeating the above operation steps, the pins of the axial diodes 16 are continuously welded.

[0050] The above merely describes the preferred embodiments of the present application, but is not intended to limit the protection scope of the present application.

Claims

1. An axial diode pin welding device, comprising a welding platform (11), and a through slot (15) is arranged on both sides of the top surface of the welding platform (11), characterized in that: The top surface of the welding platform (11) between the two through grooves (15) is fixedly connected with a multi-point surrounding welding assembly (2), which is used for avoiding local overheating of the pin, reducing the risk of bending and deformation of the pin due to softening, improving the success rate of welding, and installing a spot welding machine (12) on the top of the multi-point surrounding welding assembly (2), the spot welding machine (12) is installed with three welding heads (14) through wires (13), which is used for welding diode pins, and diode fixing moving rotating assemblies (3) are installed on both sides of the multi-point surrounding welding assembly (2), which is used for evenly distributing welding heat in the contact area of the pin, avoiding welding defects caused by uneven heating during welding; The multi-point surrounding welding assembly (2) comprises a welding support (21) fixedly connected with the welding platform (11), and the top and bottom of the welding support (21) are provided in an open state, and the spot welding machine (12) is installed at the top opening of the welding support (21), a third sliding groove (24) is formed through the two sides of the welding support (21), a first sliding groove (22) and a second sliding groove (23) are formed through the two sides of the third sliding groove (24) on the welding support (21), the length of the second sliding groove (23) is greater than that of the first sliding groove (22), the first sliding groove (22) and the second sliding groove (23) are provided in a fan-shaped structure as a whole, and the first sliding groove (22), the second sliding groove (23) and the third sliding groove (24) are provided with a first sliding block (25), a second sliding block (26) and a third sliding block (27) respectively, and the first sliding block (25), the second sliding block (26) and the third sliding block (27) are slidably connected with the welding support (21), and the first sliding block (25), the second sliding block (26) and the third sliding block (27) are clamped with the welding support (21); The first sliding block (25) is rotatably connected with a first connecting rod (210) and a second connecting rod (211) on the side away from the inside of the welding support (21), the first connecting rod (210) is rotatably connected with the second sliding block (26) at the end away from the first sliding block (25), and the two second connecting rods (211) are rotatably connected with the third sliding block (27) at the ends away from the first sliding block (25), the first connecting rod (210) and the second connecting rod (211) are provided in an M-shaped structure as a whole, and the two second connecting rods (211) are rotatably connected with each other at the ends away from the first sliding block (25), and the welding support (21) is provided with a hydraulic rod (28), and the hydraulic rod (28) is fixedly connected with a connecting piece (29) at the telescopic end, and the connecting piece (29) is rotatably connected with the two second connecting rods (211) at the connection positions; The welding support (21) is provided with a through hole (212) in the bottom, the through hole (212) is in a semicircle shape, the extension lines of the first sliding groove (22), the second sliding groove (23) and the third sliding groove (24) coincide with the center of the through hole (212), and three supporting rods (213) are arranged in the welding support (21), the three supporting rods (213) are fixedly connected with the welding head (14), the welding head (14) is located at the center line of the supporting rod (213), and the three supporting rods (213) are fixedly connected with two second sliding blocks (26) and one third sliding block (27) respectively.

2. An axial diode leg soldering apparatus as defined in claim 1, wherein, The polar pipe fixed movement rotating assembly (3) comprises two T-shaped frames (36) fixedly connected with the welding platform (11), the top of the T-shaped frame (36) is provided in a pipe body structure, the inside of the top pipe body of the T-shaped frame (36) is provided in a hollow structure, the bottom of the top pipe body of the T-shaped frame (36) is provided with a rectangular groove (316), two limiting strips (315) are welded in the inside of the top pipe body of the T-shaped frame (36), a sliding rod (314) is slidably connected in the inside of the top pipe body of the T-shaped frame (36), limiting grooves (318) are formed in the two sides of the sliding rod (314), the limiting strips (315) are located in the limiting grooves (318), the sliding rod (314) is slidably connected with the T-shaped frame (36) and the limiting strips (315), the limiting strips (315) limit the sliding rod (314), and a plurality of tooth grooves (319) are formed in the bottom of the limiting strips (315) and are arranged at equal distances.

3. An axial diode leg soldering apparatus as defined in claim 2, wherein, The bottom of the sliding rod (314) is provided with a gear (312), the gear (312) is located in the T-shaped frame (36), the gear (312) is rotatably connected with the T-shaped frame (36), the meshing teeth of the gear (312) are located in the tooth grooves (319), the gear (312) is meshed and driven with the sliding rod (314) through the tooth grooves (319), one side of the bottom of the T-shaped frame (36) is provided with a servo motor (313), the output end of the servo motor (313) is rotatably connected with the T-shaped frame (36), and the penetrating end of the servo motor (313) is fixedly connected with the gear (312), one end of the T-shaped frame (36) is rotatably connected with a second synchronous wheel (35), and the second synchronous wheel (35) is located on the same straight line with the through groove (15).

4. An axial diode leg soldering apparatus as defined in claim 3, wherein, The middle part of the second synchronous wheel (35) is provided in a hollow structure, a plurality of convex blocks (317) are welded in the middle part of the second synchronous wheel (35) and are arranged in a circumferential symmetrical distribution, one end of the sliding rod (314) is rotatably connected with a spline rod (37), the spline rod (37) is slidably connected with the second synchronous wheel (35), the convex blocks (317) are located in the grooves of the spline rod (37), the convex blocks (317) limit the spline rod (37), and a fixing frame (38) in a pipe body structure is arranged at the end, away from the sliding rod (314), of the spline rod (37), and the tubular center of the fixing frame (38) coincides with the center of the through hole (212).

5. An axial diode pin welding apparatus as defined in claim 4, wherein, The fixed frame (38) is penetrated by a plurality of limiting rods (310) which are circumferentially and symmetrically distributed, and the limiting rods (310) are fixedly connected with rubber plates (311) at one end, and meanwhile, the axial diodes (16) are clamped between the plurality of rubber plates (311), and the limiting rods (310) are provided with spring rods (39) at one side, and the spring rods (39) are fixedly connected with the rubber plates (311) at one end, and meanwhile, the spring rods (39) are penetrated and slidably connected with the fixed frame (38), and the springs of the spring rods (39) are fixedly connected with the fixed frame (38) at the end away from the rubber plates (311).

6. An axial diode leg soldering apparatus as defined in claim 3, wherein, The welding platform (11) is rotatably connected with two first synchronous wheels (32) at the bottom, and the two first synchronous wheels (32) are provided with a connecting rod (34) therebetween, and meanwhile, the connecting rod (34) is rotatably connected with the welding platform (11), the connecting rod (34) is fixedly connected with the first synchronous wheel (32) at the penetrating end, and a rotary motor (31) is installed on one side of the bottom of the welding platform (11), the rotary motor (31) is rotatably connected with the welding platform (11) at the output end, and the rotary motor (31) is fixedly connected with one of the first synchronous wheels (32) at the penetrating end, the first synchronous wheel (32) and the second synchronous wheel (35) are drivingly connected with a synchronous belt (33), and the synchronous belt (33) is located in the through slot (15).

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