An automatic welding unit for a transformer production line

Abstract

The present invention discloses an automatic welding unit for a transformer production line, which relates to the technical field of transformers, and includes a transformer feeding unit, a lead feeding unit, a soldering piece feeding unit, and a lead welding unit; the lead feeding unit is located at the front side of the lead welding unit, and the lead feeding unit is used to feed leads; the soldering piece feeding unit is located at the front side of the lead welding unit, and the soldering piece feeding unit is used to feed soldering pieces; the lead welding unit is used to weld leads and transformer semi-finished products. The present invention realizes the automation of the entire process from automatic feeding to welding of transformer semi-finished products, leads, and soldering pieces, greatly shortens the production cycle, reduces the waiting time for manual operation, and thus significantly improves the production efficiency and capacity of the overall production line, and solves the problem of low transformer welding efficiency caused by low manual feeding and unloading and poor manual welding quality in the welding production line of traditional transformers.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, and in particular to an automatic welding unit for a transformer production line. Background Art

[0002] In the traditional transformer manufacturing industry, the welding process of transformers usually involves multiple carefully designed workstations, including transformer loading stations, lead wire loading stations, and core welding stations. However, these workstations currently generally rely on manual operation. From the precise positioning of the transformer to the meticulous loading of the lead wires, to the execution of the welding operation, each link requires direct human participation. This high degree of manual dependence directly leads to a relatively low degree of automation in the entire welding production line, which is difficult to adapt to the modern manufacturing industry's demand for efficient, precise, and continuous production.

[0003] In the process of manual welding, due to the different skills and experience of each welder, they have different grasps of welding speed, temperature control, welding angle, etc., which leads to inconsistency in welding quality. Even in the hands of experienced welders, it is difficult to completely avoid welding defects, such as uneven welds, pores, slag inclusions, cracks, etc. These defects not only affect the appearance quality of the transformer, but may also pose a potential threat to its electrical performance and long-term stability.

[0004] In addition, the efficiency of manual welding is also greatly limited. Since the welding operation requires the full participation of the welder, and the welding speed is limited by the welder's operating speed and skill level, it is difficult to achieve fast and continuous production. At the same time, the inspection and repair work after welding also requires a lot of manpower, which further prolongs the production cycle and increases production costs. Summary of the invention

[0005] In view of the above defects, the present invention proposes an automatic welding unit for a transformer production line, which solves the problem of low transformer welding efficiency caused by low manual loading and unloading and poor manual welding quality in traditional transformer welding production lines.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] An automatic welding unit for a transformer production line comprises a transformer feeding unit, a lead feeding unit, a soldering piece feeding unit and a lead welding unit; the lead feeding unit is located at the front side of the lead welding unit, and the lead feeding unit is used to feed leads; the soldering piece feeding unit is located at the front side of the lead welding unit, and the soldering piece feeding unit is used to feed soldering pieces; the lead welding unit is used to weld leads and transformer semi-finished products; the lead welding unit comprises a workbench, a welding mechanism, a carrier lifting mechanism and a welding clamping mechanism; the workbench is provided with an air avoidance zone; the welding mechanism is arranged in the air avoidance zone, and the welding mechanism comprises a welding frame, an upper welding unit and a lower welding unit; welding power supply The module is located in the welding frame, and the upper welding unit and the lower welding unit are electrically connected to the welding power supply module respectively; the upper welding unit is arranged at the proximal end of the upper end of the welding frame, and the lower welding unit is arranged at the proximal end of the lower end of the welding frame; the upper welding unit and the lower welding unit are arranged opposite to each other and form a welding station; the carrier lifting mechanism, the welding clamping mechanism and the welding sheet feeding unit are respectively arranged on the workbench; the carrier lifting mechanism is arranged between the upper welding unit and the lower welding unit, and is used to place the transformer and make the terminals of the transformer in the welding station; the welding clamping mechanism is arranged on the front side of the carrier lifting mechanism, and the welding clamping mechanism is used to clamp the lead wire and the transformer terminal before welding.

[0008] The technical solution of the present invention may include the following beneficial effects: it realizes the automation of the entire process from automatic loading of transformer semi-finished products, leads and welding pieces to welding, greatly shortens the production cycle, reduces the waiting time for manual operation, thereby significantly improving the production efficiency and capacity of the overall production line, and solves the problem of low transformer welding efficiency caused by low manual loading and unloading and poor manual welding quality in the traditional transformer welding production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic diagram of an automatic welding unit according to one embodiment of the present invention; Figure 2 Schematic diagram of a transformer loading unit according to one embodiment of the present invention Figure 1 ; Figure 3 Schematic diagram of a transformer loading unit according to one embodiment of the present invention Figure 2 ; Figure 4 is a schematic diagram of a lead feeding unit according to one embodiment of the present invention; Figure 5 is a schematic diagram of a conveying mechanism according to one embodiment of the present invention; Figure 6 yes Figure 5 The enlarged view of point A in the middle; Figure 7 yes Figure 5 The enlarged view of point B in the middle; Figure 8 It is an exploded view of an elastic clip, a conveying plate, an outer connecting member and an inner connecting member in one embodiment of the present invention; Fig. 9is a schematic diagram of an elastic clip according to one embodiment of the present invention; Fig.10 It is a schematic diagram of a feeding mechanism according to one embodiment of the present invention; Fig.11 yes Fig.10 Enlarged view of point C in the middle; Fig.12 Schematic diagram of a solder sheet feeding unit according to one embodiment of the present invention Figure 1 ; Fig.13 Schematic diagram of a solder sheet feeding unit according to one embodiment of the present invention Figure 2 ; Fig.14 Schematic diagram of a solder sheet feeding unit according to one embodiment of the present invention Figure 3 ; Fig.15 It is a schematic diagram of a first material guiding platform and a second material guiding platform according to one embodiment of the present invention; Fig.16 is a schematic diagram of a fixing base according to one embodiment of the present invention; Fig.17 is a cross-sectional view of a pressing component according to one embodiment of the present invention Figure 1 ; Fig.18 is a cross-sectional view of a pressing component according to one embodiment of the present invention Figure 2 ; Fig.19 Schematic diagram of a lead welding unit according to one embodiment of the present invention Figure 1 ; Fig. 20 Schematic diagram of a lead welding unit according to one embodiment of the present invention Figure 2 ; Fig.21 yes Fig. 20 The enlarged view of point D in the middle; Fig. 22 is a schematic diagram of a bottom lifting seat and a clamping mechanism according to one embodiment of the present invention; Fig.23 Schematic diagram of a clamping mechanism according to one embodiment of the present invention Figure 1 ; Fig.24 Schematic diagram of a clamping mechanism according to one embodiment of the present invention Figure 2 ; Fig.25 Schematic diagram of a carrier lifting mechanism according to one embodiment of the present invention Figure 1 ; Fig.26 Schematic diagram of a carrier lifting mechanism according to one embodiment of the present invention Figure 2 ;

[0010] Among them, 1. Transformer loading unit; 11. Transport rack; 12. Transport moving assembly; 13. Transport lifting power piece; 131. Transport moving slide rail; 132. Transport moving slider; 133. Transport moving power piece; 14. Transport moving movable plate; 15. Transport lifting plate; 16. Transport front and rear moving power piece; 2. Lead wire loading unit; 21. Conveying mechanism; 211. Conveying rack; 212. Conveying driving sprocket; 213. Conveying driven sprocket; 214. Ring chain; 2141. External connecting piece; 21411. External plate; 21412. Pin shaft; 21413. Sleeve; 2142. Internal connecting piece; 21421. Internal plate; 2143. Conveying connection part; 21430. First conveying connection hole; 21 5. Conveying motor; 216. Conveying plate; 2160. Second conveying connecting hole; 217. Elastic clip; 2171. Clip fixing body; 21710. Clip fixing through hole; 2172. Elastic clip arm; 2173. Guide; 22. Feeding mechanism; 221. Feeding base; 222. Manipulator; 223. Feeding clamping structure; 2221. Feeding connection plate; 2222. Feeding adjustment plate; 22220. Feeding adjustment bar hole; 2223. Feeding clamping assembly; 22231. Feeding clamping motor; 22232. Feeding clamping fixture; 22233. Feeding semicircular arc groove; 4. Soldering sheet feeding unit; 41. Unwinding mechanism; 411. Side plate; 412. First limit plate; 413. Pressing assembly; 413 1. Second limit plate; 4132. Fixed sleeve; 4133. Countersunk hole; 4134. Countersunk bolt; 4135. Spring; 4136. First threaded rod; 414. Unwinding shaft; 415. Solder reel; 416. Servo motor; 42. Driving mechanism; 421. Mounting plate; 422. Cylinder; 423. First guide rail pair; 43. Solder feeding mechanism; 431. Transmission wheel group; 432. Lifting assembly; 4321. Lead screw; 4322. Fixed seat; 43221. Bearing seat; 43222. Open support; 43223. Second threaded rod; 4323. Moving seat; 4324. Second guide rail pair; 4325. Position indicator; 433. Rotating assembly; 4331. Mounting support; 4332. Driving motor ; 4333, second synchronous wheel; 4334, second rotating shaft; 434, first material guide platform; 4341, material guide hole; 4342, avoidance arc surface; 435, second material guide platform; 436, transmission driven wheel; 437, transmission driving wheel; 44, swing assembly; 441, pressure wheel; 442, first rotating shaft; 443, swing arm; 45, elastic member; 46, stop sensor; 47, unwinding sensor; 5, lead welding unit; 51, workbench; 510, avoidance area; 52, welding mechanism; 521, welding frame; 522, transformer; 523, upper welding unit; 524, lower welding unit; 5231, top lifting drive; 5232, top lifting seat; 5233, upper welding head; 5234, upper welding rod;5235, upper welding head; 5236, top sliding guide assembly; 5241, lower welding head; 5242, lower welding rod; 5243, lower welding head; 53, carrier lifting mechanism; 531, inductor placement board; 532, lifting plate; 533, first lifting device; 534, first transmission assembly; 535, lifting drive; 536, second lifting device; 537, second transmission assembly; 538, lateral moving device; 5321 , screw connecting seat; 5331, first connecting frame; 5332, first lifting screw; 5341, driving wheel of transmission member; 5342, first synchronous belt; 5343, driven wheel of transmission member; 5351, connecting plate; 5352, driving device; 5361, second connecting frame; 5362, second lifting screw; 5371, first transmission wheel; 5372, second synchronous belt; 5373, second transmission wheel; 5381, translation driving member; 538 2. Translation guide rail; 5383. Translation screw rod; 5384. Translation slider; 5385. Translation connecting seat; 54. Welding clamping mechanism; 541. Bottom lifting drive; 542. Bottom lifting seat; 543. Clamping device; 544. Bottom sliding guide assembly; 5431. Welding clamping plate; 5432. Fixed frame; 5433. Reset member; 5434. First clamping member; 5435. Second clamping member; 5436. Roller; 543 7. Anti-slip insulation pad; 54310. Guide notch; 54341. First driving part; 54342. First rotating connecting part; 54343. First connecting part; 54344. First clamping part; 54351. Second driving part; 54352. Second rotating connecting part; 54353. Second connecting part; 54354. Second clamping part; 54351a. Clamping connecting rod; 54351b. Connecting block; 54351c. Avoidance cavity. ; DETAILED DESCRIPTION

[0011] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0012] In the description of the present invention, it is necessary to understand that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0013] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means more than two.

[0014] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "splicing" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0015] Combine the following Figures 1 to 26 , describing an automatic welding unit of a transformer production line according to an embodiment of the present invention.

[0016] An automatic welding unit for a transformer production line, an automatic welding unit for a transformer production line, comprising a lead feeding unit 2, a solder sheet feeding unit 4 and a lead welding unit 5;

[0017] The lead loading unit 2 is located at the front side of the lead welding unit, and the lead loading unit 2 is used to load leads; the soldering sheet loading unit is located at the front side of the lead welding unit, and the soldering sheet loading unit 4 is used to load soldering sheets; the lead welding unit 5 is used to weld leads and transformer semi-finished products.

[0018] The operation process of the automatic welding unit of a transformer production line of the present solution is as follows: the semi-finished transformer, lead wire and welding piece are loaded in sequence, and then the lead wire welding unit 5 welds the lead wire to the semi-finished transformer. Among them, the production line for welding the transformer 522 realizes the automation of the whole process from the automatic loading of the semi-finished transformer, lead wire and welding piece to welding, which greatly shortens the production cycle and reduces the waiting time of manual operation, thereby significantly improving the production efficiency and capacity of the overall production line, and solving the problem of low efficiency of transformer welding caused by low manual loading and unloading and poor manual welding quality in the welding production line of traditional transformers.

[0019] The transformer loading unit 1 includes a transport frame 11 and a transport lifting plate 15. The lead welding unit 5 is installed at the end of the transport frame 11. A transport moving component 12 is installed on the top of the transport frame 11. The movable end of the transport moving component 12 is connected to the transport lifting plate 15. The transport moving component 12 is used to move the transport lifting plate 15. The transport lifting plate 15 is used to transport the transformer 522 to the lead welding unit 5.

[0020] Through the coordinated operation of the transport lifting plate 15 and the transport moving assembly 12, the transformer 522 is transported quickly and smoothly, avoiding physical damage that may be caused during the inspection and transportation process, thereby reducing maintenance costs and product defect rates.

[0021] The transformer loading unit 1 also includes a transport and lifting power component 13 and a transport and moving movable plate 14. The moving end of the transport and moving component 12 is fixedly connected to the transport and moving movable plate 14. Both ends of the transport and moving movable plate 14 are provided with a transport and lifting power component 13. The driving end of the transport and lifting power component 13 is connected to the transport and lifting plate 15, and the transport and lifting plate 15 is used to lift the transformer 522.

[0022] It is worth noting that the transport lifting power member 13 is preferably a cylinder. A stable transport frame 11 is installed on the frame to ensure the stability and safety of the transformer 522 during transportation and reduce the risk of accidental falling. In addition, a transport moving component 12 and a transport moving movable plate 14 are installed on the transport frame 11, and the transport moving component 12 can achieve rapid movement and precise positioning of the transformer 522 during transportation.

[0023] The combined use of the transport and lifting power member 13 and the transport and lifting plate 15 enables the transformer loading unit 1 to accurately control the position and height of the transformer 522. When the heights of two adjacent workstations are inconsistent, the transport and lifting power member 13 can respond quickly and adjust the height of the transport and lifting plate 15 according to actual needs to ensure that the transformer 522 can be smoothly and accurately transferred from the current workstation to the next workstation, effectively avoiding the transfer problem caused by height differences and improving the fluency and continuity of the entire production line.

[0024] The transport and movement assembly 12 includes a transport and movement slide rail 131 , a transport and movement slider 132 and a transport and movement power piece 133 . The transport and movement slide rail 131 is horizontally installed on the top of the transport frame 11 , and the transport and movement slider 132 is fixedly connected to the transport and movement movable plate 14 .

[0025] The transporting slide rail 131 is horizontally mounted on the top of the transport frame 11, providing a solid running track for the transporting slider 132. This linear guide mechanism ensures the stability and smoothness of the transporting movable plate 14 during movement, reducing safety hazards caused by shaking or deviation.

[0026] The transporting and moving power member 133 is combined with the transporting and moving slider 132 to achieve accurate adjustment of the position of the transporting and moving movable plate 14 by accurately controlling the power output. This accuracy is not only reflected in the control of the moving distance in the horizontal direction, but also in the accurate grasp of the stop position. When the transformer 522 needs to be parked at a designated station, the transporting and moving power member 133 can respond quickly and brake accurately to ensure that the transformer 522 is accurately in place without manual secondary adjustment.

[0027] The moving direction of the transport forward and backward moving power member 16 is perpendicular to the moving direction of the transport moving slider 132 .

[0028] It is worth noting that the transport forward and backward moving power member 16 is preferably a cylinder. When the transport forward and backward moving power member 16 is started, the transport lifting plate 15 can be driven to move forward and backward, so that the transport lifting plate 15 extends into the bottom of the transformer 522. Then, the transport lifting power member 13 is started, so that the transport lifting plate 15 can lift the transformer 522 upward.

[0029] At this time, through the mutual cooperation of the front and rear moving power parts 16, the moving assembly 12 and the lifting and lowering power parts 13, the transformer loading unit 1 can flexibly transport the transformer 522 and easily cope with complex and changeable transportation environments, such as narrow passages, obstacle detours and other scenes, greatly improving the adaptability and efficiency of transportation.

[0030] The length direction of the transporting sliding rail 131 is consistent with the length direction of the transporting movable plate 14 .

[0031] By aligning the length direction of the transporting and moving slide rail 131 with the transporting and moving movable plate 14, the limited space can be more effectively utilized. This compact layout reduces unnecessary space waste and makes the entire transport area neater and more orderly.

[0032] The lead loading unit 2 includes a conveying mechanism 21 and a loading mechanism 22; the conveying mechanism 21 is used to arrange the leads to be processed in an orderly manner and separate them individually, and continuously transport the leads to be processed to the grabbing area of ​​the loading mechanism 22 by a circular rolling manner; the loading mechanism 22 is used to grab the individually separated leads to be processed and place them in the lead welding unit 5 for the welding process.

[0033] First, the only manual intervention method is used, and the conveying mechanism 21 is used to arrange the scattered and stacked leads to be processed in an orderly manner and separate them individually, and the leads are continuously and stably conveyed to the grasping area of ​​the feeding mechanism 22 by means of circular rolling. This process effectively avoids the mutual entanglement and stacking of the leads, providing a good prerequisite for subsequent processing. Secondly, the feeding mechanism 22 can automatically identify and accurately grasp the leads to be processed that are separated individually on the conveying mechanism 21, and then place them steadily on the lead welding unit 5. This process realizes the transformation of the leads from disorder to order, and from scattered to precise positioning.

[0034] The conveying mechanism 21 comprises two conveying frames 211 arranged side by side, and a conveying driving sprocket 212 and a conveying driven sprocket 213 are rotatably mounted at both ends of the facing surfaces of the two conveying frames 211, and an annular chain 214 is sleeved and meshedly connected on the conveying driving sprocket 212 and the conveying driven sprocket 213;

[0035] A conveying motor 215 is installed at one end of the conveying frame 211, and the motor shaft of the conveying motor 215 passes through the conveying frame 211 and is connected to the conveying active sprocket 212; conveying plates 216 are installed at intervals on the annular chain 214, and at least one elastic clip 217 is installed on the plate surface of the conveying plate 216, and the elastic clip 217 is used to clamp the lead to be processed.

[0036] Specifically, when the conveying motor 215 is started, the conveying active sprocket 212 is driven to rotate by the motor shaft of the conveying motor 215, thereby driving the annular chain 214 to circulate along the outer wheel surfaces of the conveying active sprocket 212 and the conveying driven sprocket 213. The conveying plate 216 on the annular chain 214 moves accordingly, and the lead to be processed is manually clamped in the elastic clip 217 on the conveying plate 216, so that the lead to be processed is also smoothly conveyed accordingly. This design makes full use of the continuity and stability of the transmission of the annular chain 214, combined with the flexible clamping ability of the elastic clip 217, effectively avoiding the mutual entanglement and stacking of the leads, and also realizes the automatic, efficient and orderly conveying of the leads.

[0037] The annular chain 214 includes a plurality of outer connecting members 2141 and inner connecting members 2142 connected at intervals;

[0038] The outer connecting member 2141 includes a pair of outer plates 21411, a pin shaft 21412 and a sleeve 21413, and the inner connecting member 2142 includes a pair of inner plates 21421; the pair of inner plates 21421 is sandwiched between two adjacent pairs of outer plates 21411, and the two ends of the inner plates 21421 are respectively fixedly connected to one end of the adjacent outer plates 21411 through the pin shaft 21412, and the pin shaft 21412 is installed between the opposite surfaces of the pair of inner plates 21421, and the sleeve 21413 is sleeved and rotatably installed on the pin shaft 21412;

[0039] The outer plates 21411 disposed opposite to each other on the two ring chains 214 are both provided with conveying connection parts 2143 extending toward each other, the conveying connection parts 2143 are disposed perpendicularly to the outer plates 21411, the conveying connection parts 2143 are provided with first conveying connection holes 21430, and the two ends of the conveying plate 216 are provided with second conveying connection holes 2160, the first conveying connection holes 21430 and the second conveying connection holes 2160 are aligned for conveying fixing parts to pass through and be fixedly connected;

[0040] The elastic clip 217 includes a clip fixing body 2171 and a pair of elastic clip arms 2172, one ends of the pair of elastic clip arms 2172 are symmetrically arranged on both sides of the clip fixing body 2171 and are connected to the clip fixing body 2171 as a whole, and an elastic clamping opening is formed between the other ends of the pair of elastic clip arms 2172; a clip fixing through hole 21710 is opened in the middle of the clip fixing body 2171, and the clip fixing through hole 21710 is aligned with the second conveying connection hole 2160 for the conveying fixing piece to pass through and be fixedly connected.

[0041] The endless chain 214 circulates under the drive of the conveying driving sprocket 212 and the conveying driven sprocket 213, and the conveying connecting portion 2143 on the outer plate 21411 serves as a connecting point to fix the conveying plate 216 on the endless chain 214, so that the conveying plate 216 moves along with the endless chain 214. The design of the pin 21412 and the sleeve 21413 allows the endless chain 214 to have a certain degree of flexibility during the rotation process, reduces friction and wear, and improves the stability and life of the entire conveying mechanism 21.

[0042] Specifically, the lead to be processed can be clamped between a pair of elastic clamping arms 2172 through the elastic clamping opening, and the elastic deformation of the elastic clamping arms 2172 is used to clamp and release the lead. When clamping, the elastic clamping arms 2172 are forced to shrink inward, the clamping opening becomes smaller, and the lead is firmly clamped; when releasing, the elastic clamping arms 2172 return to their original positions, the clamping opening opens, and the lead is free to detach. Therefore, the design of the elastic clamping arms 2172 makes the clamping process more flexible and easy to operate, and can also adapt to leads of different diameters and shapes.

[0043] In an optional embodiment, the pair of elastic clamp arms 2172 are arranged in an arc shape, and the vertical cross-section of the elastic clamp buckle 217 is in a U shape. Specifically, the elastic clamp arms 2172 with an arc design can better fit the surface of the lead to be processed, increase the stability and firmness of the clamping, and reduce the damage to the lead to be processed.

[0044] In an optional embodiment, a pair of elastic clamping arms 2172 are provided with guide portions 2173 extending to both sides from one end away from the clamp fixing body 2171, and the guide portions 2173 and the elastic clamping arms 2172 are in an arc transition. Specifically, the design of the guide portions 2173 helps the lead wire to be processed to smoothly enter the elastic clamping port, reduces the clamping failure caused by misoperation or lead wire deviation, and improves the accuracy and efficiency of clamping.

[0045] In an optional embodiment, a rubber protective cover is provided on the elastic clamp arm 2172 and the guide portion 2173. Specifically, the rubber protective cover (not shown in the figure) can effectively protect the surface of the lead to be processed from being scratched or worn, and at the same time increase the friction coefficient during the clamping process, making the clamping more stable and reliable. In addition, the elasticity of the rubber can also buffer the impact force during the clamping process to a certain extent, further protecting the integrity of the lead to be processed.

[0046] To further illustrate, the feeding mechanism 22 includes a feeding base 221, a manipulator 222 and a feeding clamping structure 223; the bottom of the manipulator 222 is rotatably mounted on the upper end of the feeding base 221, and the end of the manipulator 222 is rotatably mounted with the feeding clamping structure 223; the feeding clamping structure 223 includes a feeding connection plate 2221, a feeding adjustment plate 2222 and at least two groups of feeding clamping components 2223; one plate surface of the feeding connection plate 2221 is rotatably connected to the end of the manipulator 222, and the other plate surface of the feeding connection plate 2221 is fixedly connected to one plate surface of the feeding adjustment plate 2222;

[0047] The feeding adjustment plate 2222 is provided with a feeding adjustment bar hole 22220 along its length direction, and two groups of the feeding clamping components 2223 are detachably mounted on the feeding adjustment bar hole 22220 on the feeding adjustment plate 2222, and the distance between the two groups of the feeding clamping components 2223 in the length direction of the feeding adjustment plate 2222 forms a feeding clamping length space for clamping the lead wire;

[0048] The feeding clamping assembly 2223 includes a feeding clamping motor 22231 and a pair of feeding clamping fixtures 22232. One end of the pair of feeding clamping fixtures 22232 is hinged to the motor shaft of the feeding clamping motor 22231. A feeding clamping width space for clamping the outer surface of the lead is formed between the other ends of the pair of feeding clamping fixtures 22232. The feeding clamping motor 22231 is used to control the size of the feeding clamping width space.

[0049] Specifically, the feeding mechanism 22 is composed of a stable feeding base 221, a flexibly rotating manipulator 222, and a precisely adjusted feeding clamping structure 223. The bottom of the manipulator 222 is installed on the top of the feeding base 221 through a rotating device, and its end is flexibly connected to the feeding clamping structure 223 to ensure the flexibility of multi-dimensional operation. Furthermore, one end of the feeding connection plate 2221 in the feeding clamping structure 223 is rotatably connected to the end of the manipulator 222, and the other end is firmly fixed to the feeding adjustment plate 2222. The feeding adjustment bar hole 22220 is innovatively designed on the feeding adjustment plate 2222, allowing the feeding clamping assembly 2223 to flexibly adjust its position in the length direction to adjust the feeding clamping length space of the clamping lead to adapt to the clamping requirements of leads of different sizes. The feeding clamping assembly 2223 in each group of the feeding clamping structure 223 independently includes a feeding clamping motor 22231 and a pair of precision feeding clamping fixtures 22232. The feeding clamping motor 22231 drives a pair of feeding clamping fixtures 22232 to open and close through its motor shaft, so as to control the size of the feeding clamping width space, so that the feeding mechanism 22 can achieve efficient and accurate clamping of leads of different lengths and widths.

[0050] In an optional embodiment, the feeding clamping fixture 22232 has a first feeding hinge point and a second feeding hinge point, the feeding clamping fixture 22232 is hinged to the motor shaft of the feeding clamping motor 22231 through the first feeding hinge point, the feeding clamping fixture 22232 is hinged to the feeding clamping motor 22231 through the second feeding hinge point, and a feeding semicircular arc groove 22233 is provided at one end of the feeding clamping fixture 22232 away from the feeding clamping motor 22231;

[0051] When the feeding clamping motor 22231 drives a pair of the feeding clamping fixtures 22232 to approach each other, the two feeding semicircular arc grooves 22233 are closed to form a feeding clamping width space for clamping the outer surface of the lead wire.

[0052] Specifically, the feeding clamping motor 22231 drives the feeding clamping fixture 22232 to rotate around the first feeding hinge point through its motor shaft, and uses the second feeding hinge point to keep the overall stability of the feeding clamping fixture 22232. As the feeding clamping fixture 22232 gradually closes, the feeding semicircular arc grooves 22233 at both ends fit closely, forming a uniform clamping force on the outer surface of the lead wire, ensuring stable and damage-free clamping.

[0053] In an optional embodiment, the number of the feeding clamping components 2223 is three groups, one of which is fixedly mounted on one end of the feeding adjustment plate 2222, and the other two are detachably mounted on the feeding adjustment bar holes 22220 on the feeding adjustment plate 2222. Specifically, the fixedly mounted feeding clamping components 2223 serve as reference points to ensure the stability of the clamping process. The other two groups of adjustable feeding clamping components 2223 are precisely adjusted through the feeding adjustment bar holes 22220 according to the actual length and requirements of the lead wire, so as to achieve a wider clamping range and higher operating efficiency.

[0054] The solder sheet feeding unit 4 comprises an unwinding mechanism 41, a swinging assembly 44, a solder sheet feeding mechanism 43 and a driving mechanism 42; the unwinding mechanism 41 is used to unwind the solder sheet, and the unwinding mechanism 41 is provided with a stop sensor 46 and an unwinding sensor 47; the swinging assembly 44 is mounted on the unwinding mechanism 41, a pressure wheel 441 is mounted on the swinging end of the swinging assembly 44, the solder sheet unwound by the unwinding mechanism 41 is wound around the pressure wheel 441, and an elastic member 45 is connected between the swinging end of the swinging assembly 44 and the unwinding mechanism 41;

[0055] The soldering sheet feeding mechanism 43 is installed on the unwinding mechanism 41, and the soldering sheet feeding mechanism 43 is used to feed the soldering sheet wound on the pressing wheel 441; the unwinding mechanism 41 is installed on the driving end of the driving mechanism 42, and the driving mechanism 42 is used to drive the unwinding mechanism 41 to move, and the movement of the unwinding mechanism 41 drives the soldering sheet feeding mechanism 43 and the swing assembly 44 to move, and the movement of the soldering sheet feeding mechanism 43 drives the soldering sheet fed by the soldering sheet feeding mechanism 43 to move, so as to tear and separate the soldering sheet fed by the soldering sheet feeding mechanism 43 from the soldering sheet welded to the transformer 522;

[0056] When the stop sensor 46 senses the swing end of the swing component 44, the elastic member 45 is in a natural state, and the unwinding mechanism 41 stops working; when the unwinding sensor 47 senses the swing end of the swing component 44, the elastic member 45 is in a stretched state, and the unwinding mechanism 41 unwinds the welding sheet until the elastic member 45 returns to its natural state.

[0057] The welding piece feeding unit 4 can automatically convey the welding piece to the welding station through the coordinated use of the unwinding mechanism 41, the driving mechanism 42, the welding piece feeding mechanism 43, the swinging assembly 44, the pressure wheel 441, the elastic member 45, the stop sensor 46 and the unwinding sensor 47. After the welding is completed, the welding piece conveyed by the welding piece feeding mechanism 43 is torn apart from the welding piece welded to the transformer 522, and then the welding piece can be continuously conveyed to the next welding station, thereby automatically completing the loading of the welding piece. During the welding piece conveying process, the position of the swinging end of the swinging assembly 44 is sensed by the stop sensor 46 and the unwinding sensor 47, thereby controlling the unwinding mechanism 41 to unwind the welding piece, so that the conveyed welding piece is always in a tensioned state to ensure the welding quality.

[0058] The driving mechanism 42 includes a mounting plate 421 , a cylinder 422 is mounted on the side wall of the mounting plate 421 , a telescopic end of the cylinder 422 is connected to the unwinding mechanism 41 , a first guide pair 423 is mounted on the unwinding mechanism 41 , and the first guide pair 423 is fixed to the side wall of the mounting plate 421 .

[0059] Specifically, when the transformer 522 needs to be welded, the cylinder 422 drives the unwinding mechanism 41 to move along the first guide rail pair 423, so that the unwinding mechanism 41 drives the swing assembly 44 and the welding piece feeding mechanism 43 to move, so that the welding piece delivered by the welding piece feeding mechanism 43 is moved to the transformer 522 for welding. After the welding is completed, the cylinder 422 drives the unwinding mechanism 41 to move, so that the welding piece mechanism is away from the transformer 522. Since the welded welding piece will be heated and melted at the transformer 522, the welding piece delivered by the welding piece feeding mechanism 43 can be torn apart from the welding piece welded to the transformer 522.

[0060] The swing assembly 44 includes a first rotating shaft 442, one end of which is rotatably mounted on the unwinding mechanism 41, and the other end of the first rotating shaft 442 is fixedly mounted with a swing arm 443, the pressure wheel 441 is rotatably mounted on one end of the swing arm 443 away from the first rotating shaft 442, and the two ends of the elastic member 45 are respectively connected to one end of the swing arm 443 away from the first rotating shaft 442 and the side wall of the unwinding mechanism 41.

[0061] Specifically, when the stop sensor 46 senses the swing arm 443, the driving mechanism 42 stops working. Since the welding sheet is wound on the pressure wheel 441, when the welding sheet feeding mechanism 43 conveys the welding sheet wound on the pressure wheel 441, the length of the welding sheet between the pressure wheel 441 and the unwinding mechanism 41 will gradually decrease, thereby driving the pressure wheel 441 to move, so that the swing arm 443 moves to the position of the unwinding sensor 47. At this time, the elastic member 45 is in a stretched state. When the unwinding sensor 47 senses the swing arm 443, the unwinding mechanism 41 unwinds the welding sheet, so that the length of the welding sheet between the pressure wheel 441 and the unwinding mechanism 41 gradually increases, and the elastic member 45 gradually returns to its natural state, thereby pulling the swing arm 443 to move until the swing arm 443 moves to the position of the stop sensor 46.

[0062] Furthermore, the swing arm 443 swings by rotating the first rotating shaft 442 on the unwinding mechanism 41. Preferably, the elastic member 45 is a tension spring, and the two ends of the tension spring are respectively hooked with positioning pins, and the two positioning pins are respectively fixedly installed on the unwinding mechanism 41 and the swing arm 443. By hooking the two ends of the tension spring with the positioning pins, the elastic member 45 can be easily installed with the unwinding mechanism 41 and the swing arm 443.

[0063] The unwinding mechanism 41 includes a side plate 411, a first limiting plate 412, a pressing assembly 413, an unwinding shaft 414 and a soldering sheet reel 415; the side plate 411 is mounted on the first guide rail pair 423, the unwinding shaft 414 is rotatably mounted on the side wall of the side plate 411, the soldering sheet reel 415 is movably sleeved on the outer side of the unwinding shaft 414, the first limiting plate 412 fixing sleeve 4132 is arranged on the outer side of the unwinding shaft 414, the first limiting plate 412 is located on the side of the soldering sheet reel 415 facing the side plate 411, the pressing assembly 413 is fixedly mounted on the unwinding shaft 414, and the two ends of the soldering sheet reel 415 are respectively tightly attached to the end surface of the first limiting plate 412 and the pressing end of the pressing assembly 413;

[0064] One end of the unwinding shaft 414 passes through the side plate 411 and extends to the outside to be connected with a servo motor 416. The servo motor 416 is installed on the side wall of the side plate 411 through a bracket, and the stop sensor 46 and the unwinding sensor 47 are electrically connected to the servo motor 416. Specifically, the unwinding shaft 414 is driven to rotate by the servo motor 416, and the unwinding shaft 414 drives the first limiting plate 412 and the pressing assembly 413 to rotate, thereby driving the soldering sheet reel 415 to rotate.

[0065] The pressing assembly 413 includes a second limiting plate 4131 and a fixing sleeve 4132; the second limiting plate 4131 and the fixing sleeve 4132 are respectively movably sleeved on the outside of the unwinding shaft 414, the fixing sleeve 4132 is detachably mounted on the outside of the unwinding shaft 414, and one end of the second limiting plate 4131 away from the fixing sleeve 4132 presses against the soldering sheet reel 415;

[0066] The end face of the fixing sleeve 4132 is provided with a plurality of countersunk holes 4133 in a circular array around the axis of the fixing sleeve 4132, and a countersunk bolt 4134 is movably inserted in each of the countersunk holes 4133, and the rod of each of the countersunk bolts 4134 is fixedly connected to the second limiting plate 4131, and a spring 4135 is sleeved on the outer side of the rod of each of the countersunk bolts 4134, and the two ends of each of the springs 4135 are respectively connected to the second limiting plate 4131 and the countersunk hole 4133.

[0067] Specifically, when installing the solder reel 415, firstly, the solder reel 415 is sleeved on the outside of the unwinding shaft 414, and the solder reel 415 is closely attached to the first limiting disk 412, then the second limiting disk 4131 and the fixing sleeve 4132 are sleeved on the outside of the unwinding shaft 414, and under the action of the spring 4135, the second limiting disk 4131 is closely attached to the end face of the solder reel 415, and then the fixing sleeve 4132 is fixed on the unwinding shaft 414, so that the solder reel 415 is pressed against the first limiting disk 412. It is worth noting that, under the cooperation of the countersunk bolt 4134 and the spring 4135, solder reels 415 of different models can be pressed against the first limiting disk 412, thereby improving the application range of the device.

[0068] The top end of the fixing sleeve 4132 is threaded with a first threaded rod 4136, the side wall of the unwinding shaft 414 is provided with a positioning hole matched with the first threaded rod 4136, and the top side wall of the first threaded rod 4136 is provided with a first adjustment rod. Specifically, the first adjustment rod is rotated to drive the first threaded rod 4136 to rotate, so that the bottom end of the first threaded rod 4136 is inserted into the positioning hole, thereby fixing the fixing sleeve 4132 on the unwinding shaft 414, and the first adjustment rod is rotated to drive the first threaded rod 4136 to rotate, so that the bottom end of the first threaded rod 4136 is moved out of the positioning hole, and the fixing sleeve 4132 can be removed from the unwinding shaft 414 to replace a different type of solder reel 415.

[0069] The welding piece feeding mechanism 43 includes a transmission wheel group 431, a lifting component 432, a rotating component 433, a first material guide platform 434 and a second material guide platform 435 installed on the side plate 411; the opposite side walls of the first material guide platform 434 and the second material guide platform 435 are provided with material guide holes 4341, and a transmission driven wheel 436 is provided between the first material guide platform 434 and the second material guide platform 435, and the transmission driven wheel 436 is installed at the lifting end of the lifting component 432, and a transmission driving wheel 437 is provided below the transmission driven wheel 436, and the transmission driving wheel 437 is installed at the rotating end of the rotating component 433, and a clamping interval for clamping the welding piece is formed between the transmission driven wheel 436 and the transmission driving wheel 437.

[0070] Specifically, the welding piece passes through the guide holes 4341 of the first guide table 434 and the second guide table 435 in turn, and then the lifting component 432 is used to drive the transmission driven wheel 436 to rise and fall to adjust the distance between the transmission driven wheel 436 and the transmission driving wheel 437, so that the welding piece can be clamped by the transmission driven wheel 436 and the transmission driving wheel 437, and then the transmission driving wheel 437 is driven to rotate by the rotating component 433 to transport the welding piece clamped by the transmission driven wheel 436 and the transmission driving wheel 437.

[0071] The lifting assembly 432 includes a lead screw 4321, the top end of the lead screw 4321 is rotatably connected to a fixed seat 4322, the bottom end of the lead screw 4321 is threadedly connected to a moving seat 4323, the side wall of the moving seat 4323 is installed with a second guide rail pair 4324, and the fixed seat 4322 and the second guide rail pair 4324 are respectively fixedly installed on the side walls of the side plate 411;

[0072] The top end of the lead screw 4321 passes through the fixed seat 4322 and extends to the outside to be connected with a handwheel, the bottom end of the movable seat 4323 is installed with a wheel frame, and the transmission driven wheel 436 is rotatably installed on the wheel frame; the outer side of the lead screw 4321 is provided with a position indicator 4325, and the position indicator 4325 is located between the handwheel and the fixed seat 4322.

[0073] Specifically, the hand wheel drives the lead screw 4321 to rotate on the fixed seat 4322. During the rotation of the lead screw 4321, the threaded movable seat 4323 is driven to move along the second guide rail pair 4324. The movable seat 4323 drives the transmission driven wheel 436 to move up and down, thereby adjusting the distance between the transmission driven wheel 436 and the transmission active wheel 437 to clamp welding pieces of different types. The position display 4325 can be used to display the adjusted height in real time, thereby realizing a precise height adjustment of the transmission driven wheel 436, which is convenient and quick.

[0074] Furthermore, the fixed seat 4322 includes a bearing seat 43221 fixed to the side plate 411, and an opening support 43222 is provided at the top of the bearing seat 43221, and the lead screw 4321 passes through the bearing seat 43221 and the opening support 43222, and a second threaded rod 43223 is threaded through the side wall of the opening of the opening support 43222, and a second adjusting rod 43223 is provided on one side of the second threaded rod 43223. Specifically, the adjusting rod is rotated to drive the second threaded rod 43223 to rotate and close the opening of the opening support 43222, so that the opening support 43222 locks the lead screw 4321 to prevent the lead screw 4321 from rotating during the conveying of the welding sheet, thereby ensuring stable conveying.

[0075] The rotating assembly 433 includes a mounting support 4331, which is mounted on the side wall of the side plate 411. A driving motor 4332 is mounted on the side of the mounting support 4331 away from the side plate 411. The output shaft of the driving motor 4332 passes through the mounting support 4331 and is connected to a first synchronous wheel. The first synchronous wheel is connected to a second synchronous wheel 4333 through a synchronous belt transmission. The second synchronous wheel 4333 is coaxially connected to a second rotating shaft 4334. One end of the second rotating shaft 4334 passes through the side plate 411 and is coaxially connected to the transmission driving wheel 437. Specifically, the driving motor 4332 drives the first synchronous wheel to rotate, and drives the second synchronous wheel 4333 to rotate under the action of the synchronous belt, thereby driving the transmission driving wheel 437 connected to the second rotating shaft 4334 to rotate.

[0076] The first material guide platform 434 and the second material guide platform 435 are provided with an avoidance arc surface 4342 for avoiding the rotation of the transmission driven wheel 436 and the transmission driving wheel 437. Specifically, by providing the avoidance arc surface 4342, the first material guide platform 434 and the second material guide platform 435 can be installed close to the transmission driven wheel 436 and the transmission driving wheel 437, reducing the distance between the material guide hole 4341 and the clamping interval, so that when the welding piece passes through the material guide hole 4341, it can enter the clamping interval faster and more smoothly.

[0077] The lead welding unit 5 includes a workbench 51, a welding mechanism 52, a carrier lifting mechanism 53 and a welding clamping mechanism 54;

[0078] The workbench 51 is provided with an air avoidance area 510; the welding mechanism 52 is arranged in the air avoidance area 510, and the welding mechanism 52 includes a welding frame 521, an upper welding unit 523 and a lower welding unit 524;

[0079] The welding power supply module is located in the welding frame 521, and the upper welding unit 523 and the lower welding unit 524 are electrically connected to the welding power supply module respectively; the upper welding unit 523 is arranged at the upper end proximal end of the welding frame 521, and the lower welding unit 524 is arranged at the lower end proximal end of the welding frame 521; the upper welding unit 523 and the lower welding unit 524 are arranged opposite to each other and form a welding station;

[0080] The carrier lifting mechanism 53, welding clamping mechanism 54 and welding sheet feeding unit 4 are respectively arranged on the workbench 51; the carrier lifting mechanism 53 is arranged between the upper welding unit 523 and the lower welding unit 524, and is used to place the transformer 522 and make the terminals of the transformer 522 in the welding station; the welding clamping mechanism 54 is arranged on the front side of the carrier lifting mechanism 53, and the welding clamping mechanism 54 is used to clamp the lead wire and the transformer 522 terminal before welding.

[0081] Through the cooperation of the welding mechanism 52, the carrier lifting mechanism 53, the welding clamping mechanism 54 and the solder piece feeding unit 4, the operations of lead conveying, solder piece feeding, lead and terminal clamping, and lead and terminal welding are realized. The whole process is fully automated and does not require manual processing, which not only saves labor costs but also improves production efficiency. The degree of automation is high, the welding efficiency is significantly improved, and the welding quality is stable.

[0082] The welding clamping mechanism 54 includes a bottom lifting drive 541, a bottom lifting seat 542 and a clamping device 543, wherein the clamping device 543 includes a welding clamping plate 5431, a fixing frame 5432, a reset member 5433, a first clamping member 5434 and a second clamping member 5435; the driving end of the bottom lifting drive 541 is drivingly connected to the bottom lifting seat 542 to drive the bottom lifting seat 542 to rise or fall; the welding clamping plate 5431 is fixed to the proximal end of the front end of the bottom lifting seat 542; the fixing frame 5432 is fixedly arranged on the workbench 51 and is located at the front side of the welding clamping plate 5431;

[0083] The middle parts of the first clamping member 5434 and the second clamping member 5435 are rotatably assembled on the fixing frame 5432 to form a clamp-like structure; the top of the first clamping member 5434 and the top of the second clamping member 5435 cooperate to form a clamping station for clamping the lead wire and the terminal of the transformer 522;

[0084] The welding clamping plate 5431 is provided with a guide notch 54310; the width between the two side walls of the guide notch 54310 gradually narrows along the opening edge toward the bottom of the guide notch 54310; the bottoms of the first clamping member 5434 and the second clamping member 5435 are both rotatably equipped with rollers 5436; one end of the reset member 5433 is arranged at the proximal end of the lower end of the first clamping member 5434, and one end of the reset member 5433 is arranged at the proximal end of the lower end of the second clamping member 5435, so that the side wall of the roller 5436 is close to the side wall of the guide notch 54310.

[0085] The welding clamping plate 5431 is arranged on the bottom lifting seat 542, and will rise or fall with the bottom lifting seat 542. When it is necessary to clamp the lead wire and the terminal of the transformer 522, the bottom lifting drive 541 drives the bottom lifting seat 542 to rise, thereby driving the welding clamping plate 5431 to rise synchronously. Since the width between the two side walls of the guide notch 54310 gradually narrows along the opening edge toward the bottom of the guide notch 54310, as the welding clamping plate 5431 rises, the spacing between the two rollers 5436 gradually decreases, and compresses the reset member 5433, so that the distance between the top of the first clamping member 5434 and the top of the second clamping member 5435 gradually decreases, thereby achieving the purpose of the top of the first clamping member 5434 and the second clamping member 5435 tightening the lead wire and the terminal of the transformer 522.

[0086] When it is necessary to release the welded lead wire and the terminal of the transformer 522, the bottom lifting drive 541 drives the bottom lifting seat 542 to descend, thereby driving the welding clamping plate 5431 to descend synchronously. Since the width between the two side walls of the guide notch 54310 gradually narrows along the opening edge toward the bottom of the guide notch 54310, as the welding clamping plate 5431 descends, the reset member 5433 drives the bottom of the first clamping member 5434 and the second clamping member 5435 to reset, and the spacing between the two rollers 5436 gradually increases, so that the distance between the top of the first clamping member 5434 and the top of the second clamping member 5435 gradually increases, so that the top of the first clamping member 5434 and the second clamping member 5435 release the lead wire and the terminal of the transformer 522.

[0087] By adopting the above structure, during the welding process, the bottom lifting drive 541 drives the bottom lifting seat 542 and the welding head to move upward or downward, so that the top of the first clamping member 5434 and the second clamping member 5435 can clamp or release the lead wire and the terminal of the transformer 522; and the structure is simple and stable, which can replace the traditional method of manually adjusting the position of the lead wire and the terminal of the transformer 522, so that the whole device has a high degree of automation, significantly improves the welding efficiency, and stabilizes the welding quality.

[0088] The fixing frame 5432 serves to fix the first clamping member 5434 and the second clamping member 5435, so that the first clamping member 5434 and the second clamping member 5435 form an embedded structure. In a specific embodiment, the reset member 5433 is a spring; the reset member 5433 can make the side wall of the roller 5436 close to the side wall of the guide notch 54310, and reduce or increase the distance between the two rollers 5436 through the guide notch 54310, so as to achieve the purpose of clamping the lead wire and the terminal of the transformer 522.

[0089] The roller 5436 can reduce the friction between the first clamping member 5434 and the guide notch 54310, and between the second clamping member 5435 and the guide notch 54310, so that the clamping and releasing processes are smoother. In a specific embodiment of the present invention, the bottom lifting drive 541 is a lifting motor.

[0090] The guide notch 54310 includes a loosening section, a transition section and a clamping section; the loosening section is located at the opening of the guide notch 54310, the clamping section is located at the bottom of the guide notch 54310, and the transition section is located between the loosening section and the clamping section; the distance between the two side walls of the loosening section is greater than the distance between the two side walls of the clamping section, and the distance between the two side walls of the transition section gradually decreases from top to bottom.

[0091] In a preferred embodiment of the present invention, the welding clamping mechanism 54 includes a bottom sliding guide assembly 544, the bottom sliding guide assembly 544 includes a bottom sliding block and a bottom guide rail, the bottom guide rail is vertically arranged on the welding mechanism 52, the bottom sliding block is arranged on the rear side of the bottom lifting seat 542, and the bottom sliding block and the bottom guide rail are slidably assembled. With the above structure, the movement trajectory of the bottom lifting seat 542 can be accurately controlled through the cooperation of the bottom sliding block and the bottom guide rail, and the bottom lifting seat 542 can be kept stable during the movement, reducing the influence of vibration and unstable factors, thereby improving the stability and accuracy of the welding equipment.

[0092] The upper welding unit 523 includes a top lifting drive 5231, a top lifting seat 5232, an upper welding head 5233, an upper welding rod 5234 and an upper welding head 5235; the top lifting drive 5231 is arranged at the top of the welding frame 521; the driving end of the top lifting drive 5231 is drivingly connected with the top lifting seat 5232 to drive the top lifting seat 5232 to rise or fall; the upper welding head 5233 is arranged on the top lifting seat 5232, the upper welding rod 5234 is arranged at the front end of the upper welding head 5233, and the upper welding head 5235 is arranged at the bottom end of the upper welding rod 5234;

[0093] The lower welding unit 524 includes a lower welding head 5241, a lower welding rod 5242 and a lower welding head 5243; the lower welding head 5241 is arranged on the bottom lifting seat 542, the lower welding rod 5242 is arranged at the front end of the lower welding head 5241, and the lower welding head 5243 is arranged at the top of the lower welding rod 5242; the upper welding head 5235 is located directly above the lower welding head 5243, and the connection line between the upper welding head 5235 and the lower welding head 5243 passes through the clamping station; the upper welding head 5233 and the lower welding head 5241 are electrically connected to the welding power supply module through the line.

[0094] The transformer 522 is used to provide electric energy to support the welding process. The upper welding unit 523 and the lower welding unit 524 are respectively welded and electrically connected to the power supply module. The upper welding head 5233, the upper welding rod 5234 and the upper welding head 5235 are electrically connected through the line to obtain electric energy. Similarly, the lower welding head 5241, the lower welding rod 5242 and the lower welding head 5243 are electrically connected through the line to obtain electric energy. During welding, the top lifting drive 5231 drives the top lifting seat 5232 to move downward, and at the same time, the bottom lifting drive 541 drives the bottom lifting seat 542 to move upward, so that the upper welding head 5235 and the lower welding head 5243 are close to the welding point. When the upper welding head 5235 and the lower welding head 5243 contact the welding station at the same time, an arc and heat are formed, and the surface of the transformer 522 is melted together.

[0095] In a preferred embodiment of the present invention, the upper welding unit 523 also includes a top sliding guide assembly 5236, which includes a top sliding block and a top guide rail. The top guide rail is vertically arranged on the front side wall of the welding frame 521, and the top sliding block is arranged on the rear side of the top lifting seat 5232. The top sliding block is slidably assembled with the top guide rail.

[0096] Specifically, the first clamping member 5434 includes a first driving portion 54341, a first rotating connection portion 54342, a first connection portion 54343 and a first clamping portion 54344; the second clamping member 5435 includes a second driving portion 54351, a second rotating connection portion 54352, a second connection portion 54353 and a second clamping portion 54354; one end of the first driving portion 54341 is connected to one end of the first rotating connection portion 54342, and one end of the first connection portion 54343 is connected to the other end of the first rotating connection portion 54342; one end of the second driving portion 54351 is connected to one end of the second rotating connection portion 54352, and one end of the second connection portion 54353 is connected to the other end of the second rotating connection portion 54352;

[0097] The first connecting portion 54343 and the second connecting portion 54353 are both bent backwards, the first clamping portion 54344 is disposed at the top of the other end of the first connecting portion 54343; the second clamping portion 54354 is disposed at the top of the other end of the second connecting portion 54353;

[0098] The second driving part 54351 includes a clamping connecting rod 54351a and a connecting block 54351b, wherein the connecting block 54351b is arranged at the front side of the clamping connecting rod 54351a, and the lower end of the connecting block 54351b extends downward, so that the total length of the clamping connecting rod 54351a and the connecting block 54351b is adapted to the length of the first driving part 54341, and the roller 5436 on one side of the second driving part 54351 is rotatably assembled at the proximal end of the lower end of the connecting block 54351b;

[0099] The top surface of the connecting block 54351b, the front side surface of the clamping connecting rod 54351a, the front side surface of the second rotating connecting part 54352 and the bottom surface of the second connecting part 54353 cooperate to form an avoidance cavity 54351c; the depth of the avoidance cavity 54351c is adapted to the thickness of the first rotating connecting part 54342 and the thickness of the first driving part 54341, and the upper ends of the first rotating connecting part 54342 and the first driving part 54341 are both arranged in the avoidance cavity 54351c; the first rotating connecting part 54342 and the second rotating connecting part 54352 are respectively rotatably connected to the fixing frame 5432;

[0100] A first mounting hole is provided on the left side of the connecting block 54351b, a second mounting hole is provided on the right side of the first driving portion 54341, one end of the reset member 5433 is installed in the first mounting hole, and the other end of the reset member 5433 is installed in the second mounting hole.

[0101] The first connection part 54343 serves to connect the first rotating connection part 54342 and the first clamping part 54344, and the second connection part 54353 serves to connect the second rotating connection part 54352 and the second clamping part 54354. The first connection part 54343 and the second connection part 54353 are both bent backwards to prevent interference between the first clamping member 5434, the second clamping member 5435 and the lower welding rod 5242 and the lower welding head 5243, which results in the lower welding rod 5242 being unable to move upward smoothly and the lower welding head 5243 being unable to extend into the clamping station, thereby causing problems affecting welding.

[0102] In practical applications, the fixing frame 5432 is provided with a rotating shaft, the first rotating connection part 54342 is provided with a first rotating through hole, the second rotating connection part 54352 is provided with a second rotating through hole, the rotating shaft passes through the first rotating through hole and the second rotating through hole in sequence, and the first rotating connection part 54342 and the second rotating connection part 54352 are pressed against each other by bolts. The first clamping member 5434 is rotatably assembled through the first rotating connection part 54342, and the first clamping member 5434 is rotatably assembled through the second rotating connection part 54352. In a preferred embodiment of the present invention, the first clamping part 54344 and the second clamping part 54354 are both provided with an anti-slip insulating pad 5437 on one side facing the welding machine head.

[0103] Specifically, the carrier lifting mechanism 53 includes an inductor placement plate 531, a lifting plate 532, a first lifting device 533, a first transmission assembly 534, a lifting drive 535, a second lifting device 536 and a second transmission assembly 537;

[0104] The first lifting device 533 includes a first connecting frame 5331 and a first lifting screw 5332; the first lifting screw 5332 is threadedly assembled on the first connecting frame 5331; the first transmission assembly 534 includes a transmission driving wheel 5341, a first synchronous belt 5342 and a transmission driven wheel 5343; the lifting drive member 535 is arranged on one side of the first connecting frame 5331, and the transmission driving wheel 5341 is transmission-connected to the driving end of the lifting drive member 535, and the transmission driving wheel 5341 is transmission-connected to the driving end of the lifting drive member 535. The inner ring of the driven wheel 5343 of the driving member is threadedly connected with the first lifting screw 5332, and the driven wheel 5343 of the driving member is rotatably assembled on the first connecting frame 5331; the first synchronous belt 5342 is sleeved on the outer periphery of the driving wheel 5341 and the driven wheel 5343 of the driving member; the lifting driving member 535 drives the first lifting screw 5332 to rotate about its own axis through the first transmission assembly 534, and makes the first lifting screw 5332 move upward or downward relative to the first connecting frame 5331;

[0105] The second lifting device 536 includes a second connecting frame 5361 and a second lifting screw 5362; the second lifting screw 5362 is threadedly assembled on the second connecting frame 5361; the second transmission assembly 537 includes a first transmission wheel 5371, a second synchronous belt 5372 and a second transmission wheel 5373; the first transmission wheel 5371 is sleeved on the outer periphery of the first lifting screw 5332, the second transmission wheel 5373 is sleeved on the outer periphery of the second lifting screw 5362, and the second synchronous belt 5372 is sleeved on the outer peripheries of the first transmission wheel 5371 and the second transmission wheel 5373;

[0106] The first lifting screw 5332 drives the second lifting screw 5362 to rotate about its own axis through the second transmission assembly 537, and causes the second lifting screw 5362 to move upward or downward relative to the second connecting frame 5361; the top of the second lifting screw 5362 is rotatably connected to the bottom of the lifting plate 532; the inductor placement plate 531 is set on the lifting plate 532, and the top of the first lifting screw 5332 and the top of the second lifting screw 5362 are both rotatably connected to the bottom of the lifting plate 532.

[0107] The driving device 5352 can refer to the existing driving motor 4332, and the driving shaft of the driving motor 4332 can rotate in both clockwise and counterclockwise directions, thereby driving the first lifting screw 5332 and the second lifting screw 5362 to move upward or downward.

[0108] The first connecting frame 5331 and the second connecting frame 5361 have the same structure, and the difference lies in the installation position. The first lifting screw 5332 and the second lifting screw 5362 are respectively threadedly assembled on the corresponding connecting frame. The connecting frame includes a connecting frame transverse plate and a connecting frame longitudinal plate. The connecting frame longitudinal plate is vertically arranged at one end of the connecting frame transverse plate, and the angle between the connecting frame transverse plate and the connecting frame longitudinal plate is 90°. The first lifting screw 5332 and the second lifting screw 5362 are respectively threadedly assembled on the proximal end of one end of the connecting frame transverse plate of the corresponding connecting frame, and the top of the connecting frame longitudinal plate is connected to the proximal end of the other end of the connecting frame transverse plate.

[0109] In a specific embodiment of the present invention, the lifting drive member 535 includes a connecting plate 5351 and a driving device 5352; one end of the connecting plate 5351 is connected to the longitudinal plate of the connecting frame, and the driving device 5352 is arranged on the connecting plate 5351. The connecting plate 5351 is used to fix the driving device 5352 to the first connecting frame 5331.

[0110] A screw connection seat 5321 is provided at the bottom of the lifting plate 532, and a bearing is provided in the screw connection seat 5321 to prevent the first lifting screw 5332 or the second lifting screw 5362 from interfering with the screw connection seat 5321 during rotation, thereby preventing the first lifting screw 5332 or the second lifting screw 5362 from being unable to rotate.

[0111] In a specific embodiment of the present invention, the first connecting frame 5331 and the second connecting frame 5361 are further provided with a guide assembly, which includes a lifting guide rail, a lifting slider and a screw connection seat 5321; the lifting guide rail is arranged on the connecting frame longitudinal plate along the up-down direction; one side of the lifting slider is slidably assembled on the lifting guide rail, the screw connection seat 5321 is arranged on the other side of the lifting slider, and the lower end of the first lifting screw 5332 or the second lifting screw 5362 is rotatably assembled on the screw connection seat 5321. When the first lifting screw 5332 or the second lifting screw 5362 moves in the vertical direction, the lower end of the first lifting screw 5332 or the second lifting screw 5362 will drive the screw connection seat 5321 to rise and fall synchronously, thereby driving the lifting slider to rise and fall synchronously. Through the cooperation of the lifting guide rail, the lifting slider and the screw connection seat 5321, it can be ensured that the first lifting screw 5332 and the second lifting screw 5362 of the machine maintain accurate positions and directions during the movement, and optimize the trajectory and stability of the movement.

[0112] Specifically, the carrier lifting mechanism 53 also includes a lateral moving device 538, including a translation driving member 5381, a translation guide rail 5382, a translation screw 5383, a translation slider 5384 and a translation connecting seat 5385; the translation driving member 5381 is arranged at one end of the lifting plate 532, and is transmission-connected with the translation screw 5383; the translation guide rail 5382 is arranged on the lifting plate 532 along the left and right direction; a screw hole is provided in the middle of the translation slider 5384, and the translation slider 5384 is threadedly connected to the translation screw 5383 through the screw hole, and the side wall of the translation slider 5384 is slidably assembled on the translation guide rail 5382, the translation connecting seat 5385 is arranged at the top of the translation slider 5384, and the inductor placement plate 531 is arranged at the top of the translation connecting seat 5385.

[0113] The lateral moving device 538 is specifically a screw transmission structure. The translation drive 5381 drives the translation screw 5383 to rotate with its own axis as the rotation axis. Through the cooperation of the translation guide rail 5382, the translation screw 5383 and the translation slider 5384, the rotational motion is converted into linear motion, so that the translation slider 5384 can move along the translation guide rail 5382, so that the translation slider 5384 drives the inductor placement plate 531 to move horizontally through the translation connecting seat 5385, thereby improving the flexibility of the inductor processing tooling, and the staff can adjust the position of the inductor workpiece according to actual conditions.

[0114] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. An automatic welding unit for a transformer production line, characterized in that: It includes a lead feeding unit, a solder sheet feeding unit and a lead welding unit; The lead feeding unit is located at the front side of the lead welding unit, and is used to feed the lead; the soldering piece feeding unit is located at the front side of the lead welding unit, and is used to feed the soldering piece; the lead welding unit is used to weld the lead and the semi-finished transformer; The lead welding unit includes a workbench, a welding mechanism, a carrier lifting mechanism and a welding clamping mechanism; The workbench is provided with an air avoidance zone; the welding mechanism is arranged in the air avoidance zone, and the welding mechanism comprises a welding frame, an upper welding unit and a lower welding unit; The welding power supply module is located in the welding frame, and the upper welding unit and the lower welding unit are electrically connected to the welding power supply module respectively; the upper welding unit is arranged at the upper end proximal end of the welding frame, and the lower welding unit is arranged at the lower end proximal end of the welding frame; the upper welding unit and the lower welding unit are arranged opposite to each other and form a welding station; The carrier lifting mechanism, welding clamping mechanism and welding sheet feeding unit are respectively arranged on the workbench; the carrier lifting mechanism is arranged between the upper welding unit and the lower welding unit, and is used to place the transformer and make the transformer terminal in the welding station; The welding clamping mechanism is arranged at the front side of the carrier lifting mechanism, and the welding clamping mechanism is used to clamp the lead wire and the transformer terminal before welding; It also includes a transformer loading unit, which includes a transport frame and a transport lifting plate, the lead welding unit is installed at the end of the transport frame, a transport moving assembly is installed on the top of the transport frame, the movable end of the transport moving assembly is connected to the transport lifting plate, the transport moving assembly is used to move the transport lifting plate, and the transport lifting plate is used to transport the transformer to the lead welding unit; The lead feeding unit comprises a conveying mechanism and a feeding mechanism; The conveying mechanism is used to arrange the leads to be processed in an orderly manner and separate them individually, and continuously convey the leads to be processed to the grabbing area of ​​the feeding mechanism in a circular rolling manner; The feeding mechanism is used to grab the individually separated lead wires to be processed and place them in the lead welding unit for welding process; The conveying mechanism comprises two conveying racks arranged side by side, and two ends of the facing surfaces of the two conveying racks are rotatably mounted with a conveying driving sprocket and a conveying driven sprocket respectively, and an annular chain is sleeved and meshedly connected on the conveying driving sprocket and the conveying driven sprocket; A conveying motor is installed at one end of the conveying frame, and the motor shaft of the conveying motor passes through the conveying frame and is connected to the conveying driving sprocket; Conveying plates are installed at intervals on the annular chain, and at least one elastic clip is installed on the plate surface of the conveying plate. The elastic clip is used to clamp the lead wire to be processed.

2. The automatic welding unit of a transformer production line according to claim 1, characterized in that: The endless chain comprises a plurality of outer connecting members and inner connecting members connected at intervals; The outer connecting member includes a pair of outer plates, a pin shaft and a sleeve, and the inner connecting member includes a pair of inner plates; the pair of inner plates are sandwiched between two adjacent pairs of outer plates, the two ends of the inner plates are respectively fixedly connected to one end of the adjacent outer plates through the pin shaft, and the pin shaft is installed between the opposite surfaces of the pair of inner plates, and the sleeve is sleeved and rotatably installed on the pin shaft; The outer plates arranged opposite to each other on the two ring chains are both provided with conveying connection parts extending toward each other, the conveying connection parts are arranged perpendicularly to the outer plates, a first conveying connection hole is opened on the conveying connection parts, and second conveying connection holes are opened at both ends of the conveying plates, and the first conveying connection hole and the second conveying connection hole are aligned for the conveying fixing piece to pass through and be fixedly connected; The elastic clip comprises a clip fixing body and a pair of elastic clip arms, one end of the pair of elastic clip arms is symmetrically arranged on both sides of the clip fixing body and connected to the clip fixing body as a whole, and an elastic clamping opening is formed between the other ends of the pair of elastic clip arms; A clip fixing through hole is provided in the middle of the clip fixing body, and the clip fixing through hole is aligned with the second conveying connection hole for the conveying fixing piece to pass through and be fixedly connected.

3. The automatic welding unit of a transformer production line according to claim 1, characterized in that: The welding sheet feeding unit comprises an unwinding mechanism, a swinging assembly, a welding sheet feeding mechanism and a driving mechanism; The unwinding mechanism is used to unwind the solder sheet, and a stop sensor and an unwinding sensor are provided on the unwinding mechanism; the swinging assembly is installed on the unwinding mechanism, a pressure wheel is installed on the swinging end of the swinging assembly, and the solder sheet unwound by the unwinding mechanism is wound around the pressure wheel, and an elastic member is connected between the swinging end of the swinging assembly and the unwinding mechanism; The solder sheet feeding mechanism is installed on the unwinding mechanism, and the solder sheet feeding mechanism is used to feed the solder sheet wound on the pressing wheel; The unwinding mechanism is installed at the driving end of the driving mechanism, and the driving mechanism is used to drive the unwinding mechanism to move. The movement of the unwinding mechanism drives the welding piece feeding mechanism and the swing assembly to move. The movement of the welding piece feeding mechanism drives the welding piece conveyed by the welding piece feeding mechanism to move, so as to tear and separate the welding piece conveyed by the welding piece feeding mechanism from the welding piece welded to the transformer; When the stop sensor senses the swing end of the swing assembly, the elastic member is in a natural state, and the unwinding mechanism stops working; When the unwinding sensor senses the swinging end of the swinging assembly, the elastic member is in a stretched state, and the unwinding mechanism unwinds the welding sheet until the elastic member returns to a natural state.

4. The automatic welding unit of a transformer production line according to claim 3, characterized in that: The driving mechanism comprises a mounting plate, a side wall of the mounting plate is mounted with a cylinder, a telescopic end of the cylinder is connected to the unwinding mechanism, a first guide rail pair is mounted on the unwinding mechanism, and the first guide rail pair is fixed to the side wall of the mounting plate.

5. The automatic welding unit of a transformer production line according to claim 4, characterized in that: The welding clamping mechanism comprises a bottom lifting drive, a bottom lifting seat and a clamping device, and the clamping device comprises a welding clamping plate, a fixing frame, a reset member, a first clamping member and a second clamping member; The driving end of the bottom lifting drive is connected to the bottom lifting seat to drive the bottom lifting seat to rise or fall; the welding clamping plate is fixed to the front end of the bottom lifting seat; the fixing frame is fixed to the workbench and is located at the front side of the welding clamping plate; The middle parts of the first clamping member and the second clamping member are rotatably assembled on the fixing frame to form a clamp-like structure; the top of the first clamping member and the top of the second clamping member cooperate to form a clamping station for clamping the lead wire and the terminal of the transformer; The welding clamping plate is provided with a guide notch; the width between the two side walls of the guide notch gradually narrows along the opening edge toward the bottom of the guide notch; the first clamping member and the second clamping member are both rotatably equipped with rollers at the bottom; one end of the reset member is arranged at the proximal end of the lower end of the first clamping member, and one end of the reset member is arranged at the proximal end of the lower end of the second clamping member, so that the side wall of the roller is close to the side wall of the guide notch.

6. The automatic welding unit of a transformer production line according to claim 5, characterized in that: The upper welding unit comprises a top lifting drive, a top lifting seat, an upper welding head, an upper welding rod and an upper welding head; the top lifting drive is arranged at the top of the welding frame; the driving end of the top lifting drive is connected to the driving of the top lifting seat to drive the top lifting seat to rise or fall; the upper welding head is arranged on the top lifting seat, the upper welding rod is arranged at the front end of the upper welding head, and the upper welding head is arranged at the bottom end of the upper welding rod; The lower welding unit comprises a lower welding head, a lower welding rod and a lower welding head; the lower welding head is arranged on the bottom lifting seat, the lower welding rod is arranged on the front end of the lower welding head, and the lower welding head is arranged on the top end of the lower welding rod; the upper welding head is located directly above the lower welding head, and the connection line between the upper welding head and the lower welding head passes through the clamping station; The upper welding head and the lower welding head are electrically connected to the welding power supply module through a circuit.

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