Welding equipment for iron core of power transformer

Abstract

The invention relates to the technical field of iron core welding, and discloses power transformer iron core welding equipment which comprises a support. The bearing part is used for bearing the transformer iron core; the welding piece is used for carrying out automatic transposition type circulating welding with the transformer iron core; the welding piece comprises a driving piece, a machining piece, a transposition piece and a triggering piece. The processing piece is used for axially and automatically welding the transformer iron core in a reciprocating manner; and the position changing part is used for carrying out position changing on the machined part after welding. According to the welding equipment for the iron core of the power transformer, the double effects of spot welding and linear welding can be achieved through the arranged machined part by means of the reciprocating action of the welding gun, the situation that the other side tilts due to single-side welding can be effectively reduced through the symmetrical structure, meanwhile, the whole welding process is more automatic, redundant operation of operators is not needed, and the welding efficiency is improved. And the welding efficiency and the welding convenience of the iron core are improved from the side face.

Description

Technical Field

[0001] This invention relates to the field of iron core welding technology, specifically to a welding device for the iron core of a power transformer. Background Technology

[0002] The transformer core is the main magnetic circuit part of the transformer. It is usually made of stacked silicon steel sheets. The core has a significant impact on the power transmission capacity of the transformer. Common transformer cores are produced by welding two E-shaped cores together. However, existing transformer core welding equipment still has certain defects.

[0003] Especially for power transformers, whose cores are generally large or heavy, existing welding methods are too simplistic, only allowing welding on one side. This requires manual re-clamping before welding the other side of the transformer core, which is not only cumbersome and inconvenient, but also prone to thermal expansion and contraction due to the high temperatures generated during welding. Welding the other side under these conditions can easily lead to uneven welding heights, meaning the gaps between each silicon steel sheet will be different, resulting in an uneven core. Furthermore, current welding efficiency is low, failing to achieve both automatic repositioning and welding. Therefore, this paper proposes a power transformer core welding equipment to solve the aforementioned problems. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a power transformer core welding device, which solves the problem of thermal expansion and contraction deformation during transformer core welding, ultimately reducing the quality of the finished core and resulting in low welding efficiency.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a power transformer core welding device, comprising a support; a bearing member for supporting the transformer core; and a welding member for automatically repositioning and cyclically welding with the transformer core; the welding member includes a driving member, a processing member, a repositioning member, and a triggering member; the processing member performs axial reciprocating automatic welding on the transformer core; the repositioning member performs post-weld position conversion on the processing member; the driving member is connected to the processing member and the repositioning member respectively through the action of the triggering member; the processing member is provided in two sets, and the two sets of processing members are symmetrically distributed about the center line of the support.

[0006] The processing component includes a slide carriage with a sliding groove inside. A limit frame is slidably connected inside the sliding groove. A locking ring is connected to the bottom of the limit frame. A welding torch is engaged inside the locking ring. A sliding pin is connected to the bottom of the locking ring. A rotating shaft is provided at the bottom of the sliding pin. A spiral groove is provided on the rotating shaft. The sliding pin is slidably connected inside the spiral groove. A connecting gear is connected to one end of the rotating shaft. The connecting gear is connected to a driving component for transmission.

[0007] Preferably, the driving component includes a drive motor, which is mounted at the bottom of the bracket. The output end of the drive motor is connected to a drive key shaft, and a rear gear is connected to the drive key shaft. A small toothed ring meshes with the rear gear, and the surface of the small toothed ring meshes with two connecting gears.

[0008] Preferably, the shifting component includes a large gear ring, which is rotatably connected to the bracket. A rotating gear is disposed below the large gear ring, which is connected to the drive key shaft. The rotating shaft is rotatably connected to the large gear ring.

[0009] Preferably, the trigger includes a bearing bracket, one side of which is rotatably connected to the rear gear, and the other side of which is rotatably connected to the rotating gear. A sliding bracket is connected to the bearing bracket, and both sides of the sliding bracket are slidably connected to the support. A patch is connected to the sliding bracket, and a sliding plate is fixedly connected to the side of the large gear ring. The sliding plate will abut against the patch when the large gear ring rotates.

[0010] Preferably, the trigger further includes a push shaft, which is fixed on the limiting frame. A slide rod is slidably connected to the bracket, and a magnetic ring is connected to the slide rod. When the push shaft slides along with the limiting frame, it will abut against the magnetic ring.

[0011] Preferably, four sliders are provided, and the four sliders are arranged in a circular array with the center of the large toothed ring as the axis of symmetry. The small toothed ring is rotatably connected to the large toothed ring through a connector.

[0012] Preferably, the magnetic ring is magnetic, and when the magnetic ring moves to the right, it will be magnetically connected to the bracket, and the bottom side of the magnetic ring abuts against the rear gear.

[0013] Preferably, it also includes a positioning component, which includes a support frame. The two sides of the support frame are connected to a large gear ring, and a dual-shaft cylinder is fixedly installed at the bottom of the support frame. A crank is rotatably connected to the output shaft of each dual-shaft cylinder, and a tripod is rotatably connected to the crank. The tripod is rotatably connected to the support frame through a plate.

[0014] Preferably, the bottom of the tripod is connected to a ball sleeve, and a ball is fitted inside the ball sleeve, with the two balls respectively abutting against the two sides of the iron core.

[0015] The bearing component includes two bearing support rods, with an iron core inserted through the bearing support rods. The bottom of the bearing support rods is rotatably connected to multiple sets of support rods, with two support rods in each set. A contraction groove is provided on the lower surface of the bearing support rods. A slip ring is slidably connected to the bearing support rods, and a pull rod is connected to the slip ring. A push ring is connected to the pull rod.

[0016] (III) Beneficial Effects Compared with the prior art, the present invention provides a welding device for power transformer cores, which has the following advantages: 1. This power transformer core welding equipment, through the set processing parts, can achieve the dual effects of spot welding and linear welding by using the reciprocating motion of the welding gun. The symmetrical structure can effectively reduce the situation where the other side is lifted due to welding on one side. At the same time, the entire welding process is more automated, eliminating the need for redundant operations by operators, thereby improving the welding efficiency and convenience of the core.

[0017] 2. This power transformer core welding equipment, through the trigger-type linkage between the set triggering element, the transposition element, and the processing element, will automatically switch between welding and transposition, thereby achieving rapid and continuous multi-sided welding, reducing the thermal deformation of the core, improving welding efficiency, improving the welding quality of the core, improving the finished welding quality of the core, and reducing the amount of deformation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a power transformer core welding device proposed in this invention; Figure 2 This is a schematic diagram of the processed part structure of a power transformer core welding equipment proposed in this invention; Figure 3 This is a schematic diagram of the connection structure of the drive component of a power transformer core welding equipment proposed in this invention; Figure 4 This is a schematic diagram of the connection structure of the welding torch in a power transformer core welding equipment proposed in this invention. Figure 5 This is a schematic diagram of the large toothed ring structure of a power transformer core welding device proposed in this invention; Figure 6 This is a schematic diagram of the bearing bracket connection structure of a power transformer core welding equipment proposed in this invention; Figure 7 This is a schematic diagram of the positioning component structure of a power transformer core welding equipment proposed in this invention; Figure 8 This is a schematic diagram of the load-bearing structure of a power transformer core welding equipment proposed in this invention; Figure 9 This is a schematic diagram of the support structure of a power transformer core welding equipment proposed in this invention.

[0019] In the diagram: 1. Bracket; 2. Bearing component; 201. Bearing support rod; 202. Support rod; 203. Tie rod; 204. Slip ring; 205. Push ring; 206. Shrinkage groove; 3. Welded component; 301. Drive motor; 302. Drive key shaft; 303. Rotary gear; 304. Large gear ring; 305. Rear gear; 306. Sliding plate; 307. Sliding frame; 308. Patch; 309. Bearing frame; 310. Small 311. Gear ring; 312. Slide carriage; 313. Slide groove; 314. Limiting frame; 315. Push shaft; 316. Welding torch; 317. Locking ring; 318. Rotating shaft; 319. Helical groove; 320. Connecting gear; 321. Magnetic ring; 322. Slide rod; 323. Slide pin; 4. Positioning component; 401. Dual-shaft cylinder; 402. Support frame; 403. Crank; 404. Triangular frame; 405. Ball sleeve; 406. Ball. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-8 A power transformer core welding device includes a support 1; a load-bearing component 2 for supporting the transformer core; and a welding component 3 for automatically repositioning and cyclically welding with the transformer core. The welding component 3 includes a driving component, a processing component, a repositioning component, and a triggering component. The processing component performs axial reciprocating automatic welding on the transformer core. The repositioning component repositions the processed component after welding. The driving component is connected to the processing component and the repositioning component respectively through the action of the triggering component. Two sets of processing components are provided, and the two sets of processing components are symmetrically distributed about the centerline of the support 1.

[0022] In this embodiment, the workpiece includes a slide 311. A groove 312 is formed inside the slide 311, and a limiting frame 313 is slidably connected inside the groove 312. A locking ring 316 is connected to the bottom of the limiting frame 313, and a welding torch 315 is engaged inside the locking ring 316. The slide 311 serves as the basic support component of the welding actuator, and a groove 312 is precisely machined along its axial direction inside. The limiting frame 313 is slidably installed in the groove 312. The limiting frame 313 not only serves as a guide and limiter but also is fixed to the locking ring 316 at its bottom, forming a stable suspension structure. The locking ring 316 has an adjustable engaging mechanism inside, used to reliably clamp and fix the welding torch 315, ensuring the accuracy and stability of the welding torch position during welding. A sliding pin 322 is connected to the bottom of the locking ring 316. A rotating shaft 317 is located at the bottom of the sliding pin 322. A spiral groove 318 is formed on the rotating shaft 317. The sliding pin 322 is slidably connected inside the spiral groove 318. A connecting gear 319 is connected to one end of the rotating shaft 317, and the connecting gear 319 is connected to the driving component for transmission. To further realize the axial automatic reciprocating motion of the welding torch 315, a sliding pin 322 is also connected to the bottom of the locking ring 316. The sliding pin 322 extends downward and works in cooperation with a rotating shaft 317. A spiral groove 318 with a specific lead is machined on the surface of the rotating shaft 317. The end of the sliding pin 322 is embedded in the spiral groove 318 to form a sliding pair. When the rotating shaft 317 rotates under the drive of the driving component, the interaction between the spiral groove 318 and the sliding pin 322 can convert the rotational motion into the axial reciprocating linear motion of the welding torch 315, thereby realizing the feed and retraction action in the welding process. One end of the rotating shaft 317 is equipped with a connecting gear 319, which is connected to the drive component for transmission and receives power input from the drive system to ensure the coordination and synchronization of the entire welding feed motion. Through the above structure, the workpiece achieves precise positioning, reliable clamping, and automatic reciprocating welding functions of the welding torch 315, significantly improving the automation level and process consistency of iron core welding.

[0023] Furthermore, the drive unit includes a drive motor 301, which serves as the power source and core transmission mechanism of the entire welding equipment. The core of this drive unit is the drive motor 301. The drive motor 301 is preferably a servo motor or a stepper motor, fixedly mounted at the bottom of the equipment bracket 1 to ensure the stability of the overall structure and the reliability of the power output. The drive motor 301 is mounted at the bottom of the bracket 1, and its output end is connected to a drive key shaft 302. A rear gear 305 is connected to the drive key shaft 302, and a small gear ring 310 meshes with the rear gear 305. The surface of the small gear ring 310 meshes with two connecting gears 319. The small gear ring 310 is not fixedly mounted but is rotatably connected to a large gear ring 304 or other supporting structures via bearings or other connecting components (not fully shown in the diagram), allowing it to both rotate on its own axis and revolve under certain conditions. The outer tooth surface of the small gear ring 310 simultaneously meshes with the connecting gears 319 in the left and right workpieces, thereby synchronously and symmetrically transmitting the single rotational power generated by the drive motor 301 to two symmetrically distributed welding execution units.

[0024] Furthermore, the shifting component includes a large gear ring 304, which is rotatably connected to the bracket 1. A rotating gear 303 is positioned below the large gear ring 304 and connected to the drive key shaft 302. A rotating shaft 317 is rotatably connected to the large gear ring 304. The large gear ring 304 is rotatably connected to the main bracket 1 of the equipment via a bearing structure, enabling it to rotate precisely around its own axis in the horizontal plane. Below the large gear ring 304, a rotating gear 303 is slidably mounted on the drive key shaft 302 via a keyway, rotating synchronously with the drive key shaft 302. In the initial "welding mode," this rotating gear 303 does not mesh with the large gear ring 304 and is in an idle state, with no power transmitted to the shifting system. The movement of a trigger element, such as a sliding bracket 307, drives the entire transmission system, including the drive key shaft 302 and its rotating gear 303, to produce axial displacement. This causes the previously disengaged rotary gear 303 to move axially and mesh with the lower end face teeth of the large gear ring 304. Once meshing is established, the power of the drive motor 301 is transmitted to the rotary gear 303 via the drive key shaft 302, which then drives the large gear ring 304 to rotate. As the large gear ring 304 rotates, it causes all the workpieces mounted above it, typically in two symmetrical groups, to rotate together around the central axis of the equipment by 90° or a predetermined angle, thereby precisely transferring the welding torch 315 to the next welding station. The switching mechanism cleverly achieves automatic and precise switching of welding stations through the rotational movement of the large gear ring 304, the axial engagement and disengagement of the rotary gear 303, and the power transfer via the drive key shaft 302.

[0025] In addition, the trigger includes a bearing bracket 309, one side of which is rotatably connected to the rear gear 305, and the other side of which is rotatably connected to the rotating gear 303. A sliding bracket 307 is connected to the bearing bracket 309, and both sides of the sliding bracket 307 are slidably connected to the bracket 1. A patch 308 is connected to the sliding bracket 307. A sliding plate 306 is fixedly connected to the side of the large gear ring 304. When the sliding plate 306 rotates with the large gear ring 304, it will abut against the patch 308. The trigger is a key sensing and actuator for controlling the automatic switching of the control device between "welding mode" and "transfer mode". The two sides of the bearing bracket 309 are rotatably connected to the rear gear 305 and the rotating gear 303 respectively through bearings. This means that the rear gear 305 and the rotating gear 303 can rotate freely independently of the bearing bracket 309, but their axial positions are determined by the bearing bracket 309. The three form a synchronously movable whole. The top of the bearing bracket 309 is fixedly connected to a sliding bracket 307. The two sides of the sliding frame 307 are slidably connected to the main support 1 via slide rails or guide grooves, thereby constraining the motion of the entire transmission unit, including the bearing frame 309, the rear gear 305, and the rotating gear 303, to a strict axial left-right linear motion. A patch 308 is mounted on the sliding frame 307, which serves as a static trigger point. Correspondingly, a sliding plate 306 is fixedly mounted on the side of the large gear ring 304. In the "transition mode," when the large gear ring 304 is driven to rotate, the sliding plate 306 mounted on its side also revolves accordingly. After the large gear ring 304 rotates 90° or other preset angles, and the station switch is completed (determined by the number of sliding plates 306), one of the sliding plates 306 rotates to a position where it abuts against the patch 308 on the sliding frame 307. As the large gear ring 304 continues to rotate slightly, the sliding plate 306 exerts a continuous compressive force on the patch 308. This force is transmitted through the sliding bracket 307, driving the entire integrated transmission unit, including the bearing bracket 309, the rear gear 305, and the rotating gear 303, to move axially to the left. Therefore, the trigger element converts the rotation angle signal of the large gear ring 304 into an axial displacement signal of the transmission system through the mechanical contact between the sliding plate 306 and the patch 308, ultimately realizing the automatic and precise switching from "transfer mode" to "welding mode".

[0026] In addition, the trigger also includes a push shaft 314, which is fixed on the limiting frame 313. A slide rod 321 is slidably connected to the bracket 1, and a magnetic ring 320 is connected to the slide rod 321. When the push shaft 314 slides along with the limiting frame 313, it will abut against the magnetic ring 320. Since the limiting frame 313 and the welding torch 315 reciprocate axially synchronously, the position of the push shaft 314 directly reflects the real-time position of the welding torch 315. A slide rod 321 that can slide axially is provided on the main bracket 1. A magnetic ring 320 is fixedly installed on the slide rod 321. The magnetic ring 320 is made of permanent magnet material and has strong magnetism. In the "welding mode", the welding torch 315 performs reciprocating welding motion driven by the rotating shaft 317. When a welding stroke is about to end, the welding torch 315 drives the limiting frame 313 to the farthest end of its axial stroke, such as the rightmost end. At this time, the push shaft 314 fixed on the limit frame 313 moves accordingly and mechanically abuts against the magnetic ring 320 on the slide rod 321. The push shaft 314 continues to move forward, pushing the magnetic ring 320 and the slide rod 321 to slide to the right in the same direction. This action produces two chain effects: magnetic attraction and locking: when the magnetic ring 320 is pushed to its predetermined position, its strong magnetic force will cause it to magnetically connect with the surface of the adjacent steel bracket 1, thereby locking itself in that position and providing a basis for subsequent mode maintenance; and gear disengagement: the movement of the slide rod 321 will drive the magnetic ring 320 to move synchronously. The bottom side of the magnetic ring 320 is designed to contact the end face of the rear gear 305. Therefore, the rightward movement of the magnetic ring 320 will push the rear gear 305 and the entire transmission unit connected to it through the bearing bracket 309, including the rotating gear 303, to move to the right together. The rear gear 305 disengages from the small gear ring 310, cutting off the welding power. The welding torch 315 stops moving, and the rotating gear 303 moves to the right and engages with the large gear ring 304, preparing for the shift. Therefore, this triggering mechanism, composed of the push shaft 314, slide rod 321, and magnetic ring 320, converts the end-of-stroke signal of the welding torch 315 into the axial displacement of the transmission system through mechanical contact and magnetic locking, thereby accurately and automatically triggering the equipment to switch from "welding mode" to "shifting mode". It is the control switch for the start of the automated cycle.

[0027] It is worth noting that four sliders 306 are provided, and the four sliders 306 are distributed in a circular array with the center of the large gear ring 304 as the axis of symmetry. The small gear ring 310 is rotatably connected to the large gear ring 304 through a connector. The magnetic ring 320 is magnetic, and when it moves to the right, it will magnetically connect with the bracket 1. The bottom side of the magnetic ring 320 abuts against the rear gear 305. Four sliders 306 are fixedly connected to the side of the large gear ring 304, and are evenly distributed in a circular array with 90° intervals with the center of the large gear ring 304 as the axis of symmetry. The core purpose of this design is to accurately quantify the circular motion of the large gear ring 304 into a fixed angular beat. Each slider 306 represents a 90° rotation position. When the large gear ring 304 rotates one revolution, the four sliders 306 will trigger the mode switch in sequence, which allows the equipment to complete the welding of four stations in one revolution, greatly improving the work efficiency and ensuring the absolute accuracy of the switching angle. In this technical solution, the gear sides of the transmission components (large gear ring 304, small gear ring 310, rear gear 305 and rotating gear 303) are all tapered, so that the tapered surface can accurately cut into the teeth of the two gears during disengagement and meshing after disengagement, avoiding the situation where the teeth of the two gears collide during re-meshing after disengagement.

[0028] It is worth noting that a positioning component 4 is also included. Positioning component 4 includes a support frame 402, with both sides of the support frame 402 connected to a large gear ring 304. A dual-axis cylinder 401 is fixedly mounted at the bottom of the support frame 402. Cranks 403 are rotatably connected to the output shafts of both cylinders 401, and triangular brackets 404 are rotatably connected to the cranks 403. The triangular brackets 404 are rotatably connected to the support frame 402 via a plate. Both ends of the support frame 402 are fixedly connected to the large gear ring 304 by bolts or welding. This crucial installation method means that the entire positioning component 4 will move synchronously with the rotation of the large gear ring 304 as a whole. Regardless of the welding station switching, the positioning component 4 can always accurately align and act on the iron core part that needs to be welded, achieving linkage between clamping and repositioning. A dual-axis cylinder 401 is fixedly mounted at the center of the bottom of the support frame 402. The cylinder, serving as the power source for positioning component 4, features two output shafts that can extend or retract synchronously, providing symmetrical driving force. Each output shaft is rotatably connected to a crank 403 via a hinge or bearing. The crank 403, acting as a force transmission and motion conversion mechanism, has one end connected to the cylinder output shaft and the other end rotatably connected to a tripod 404 via a pin. The tripod 404 is a crucial lever mechanism. Its middle section is rotatably connected to the side wall of the support frame 402 via a fixed plate or rotating shaft; this connection point forms the fulcrum for the movement of the tripod 404. A ball sleeve 405 is connected to the bottom of the tripod 404, with two balls 406 nested inside. These balls 406 abut against the two sides of the iron core. Because the entire workpiece will undergo subsequent rotation and repositioning, the balls 406 on the sides of the iron core allow for rotational rolling, preventing excessive friction and thus avoiding wear on the core surface.

[0029] It is worth mentioning that the carrier 2 includes two carrier support rods 201. The iron core is inserted through the carrier support rods 201. The bottom of the carrier support rods 201 is rotatably connected to multiple groups of support rods 202, and each group of support rods 202 has two. A contraction groove 206 is formed on the lower surface of the carrier support rods 201. A sliding ring 204 is slidably connected to the carrier support rods 201. A pull rod 203 is connected to the sliding ring 204, and a push ring 205 is connected to the pull rod 203. The central holes of the laminations of the iron core are precisely inserted through these two carrier support rods 201. The support rods not only play a guiding role but also serve as the track for the movement of the iron core. At the bottom of each carrier support rod 201, multiple groups of support rods 202 are rotatably connected along its length direction. Each group of support rods 202 consists of two support rods 202, which are respectively hinged on both sides of the bottom of the support rod, forming a support structure similar to a "person" shape. The ends of these support rods 202 contact the ground or the equipment foundation, jointly bearing the entire weight of the iron core and the carrier support rods 201. In order to achieve the automatic retraction and extension of the support rods 202, contraction grooves 206 that are recessed inward are formed on the lower surface of the carrier support rods 201 at positions corresponding to the hinge points of each group of support rods 202. This groove provides a storage space for the rotation of the support rods 202. When an external thrust, such as a manipulator or a hydraulic cylinder, pushes the iron core forward and to the right along the carrier support rods 201 through the push ring 205, the iron core first contacts and crosses the frontmost group of support rods 202. The lower surface of the iron core will squeeze the top of the support rods 202, forcing this pair of support rods 202 to rotate downward around their hinge points until they are completely retracted into their corresponding contraction grooves 206, thereby making room for the passage of the iron core. Once the iron core completely passes through this group of support rods 202, this pair of support rods 202 will automatically reset under the action of gravity due to the loss of pressure and return to the vertical state again, waiting to receive the iron core. At the same time, the subsequent groups of support rods 202 repeat this retraction and extension process in sequence. The push ring 205 and the sliding ring 204 are linked through the pull rod 203 to ensure uniform transmission of the driving force. By controlling the pushing stroke of the push ring 205, the iron core can be precisely transported to the preset welding station.

[0030] The working principle is as follows: First, the stacked and bonded iron core is inserted into the bearing support rod 201. Then, the push rod 203 is controlled to push the iron core slowly to the welding position by using the push ring 205 to abut against the surface of the iron core. When the iron core is with the outermost set of support rods 202, the support rods 202 will rotate synchronously. At this time, the support rods 202 will rotate and retract into the shrinkage groove 206. At this time, the bearing support rod 201 will be supported by the other sets of support rods 202 and the ground to support the iron core of the transformer. After the iron core continues to move, the outermost support rod 202 will detach from the iron core and will automatically rotate under gravity to a vertical position to support the ground. At this time, the iron core continues to move, and the second set of support rods 202 is controlled to retract. At this time, the bearing support rod 201 will be supported by the outermost bearing support rod 201 and the ground to support the iron core. This allows the iron core to slide on the bearing support rod 201 and finally enter the welding position. The welding station is actually the center position of the dual-axis cylinder 401. When the dual-axis cylinder 401 extends, it will control the extension of the two output shafts, which will drive the crank 403 to move. The crank 403 will then drive the tripod 404 to rotate around its own rotation center, thereby abutting the ball 406 against the side of the iron core. The positioning component 4 is provided with two sets, upper and lower, so the two sets of positioning components 4 can move synchronously, which can clamp the iron core in the center and press the stacked silicon steel sheets to prevent deformation caused by subsequent welding. Next, the drive motor 301 is started, which drives the rear gear 305 to rotate. The rotation of the rear gear 305 drives the meshing small gear ring 310 to rotate. The meshing rotation of the small gear ring 310 and the connecting gear 319 drives the rotation of the rotating shaft 317. At this time, the sliding pin 322 slides laterally within the helical groove 318 of the rotating shaft 317. Since the helical groove 318 is the helical groove of the reciprocating lead screw, the sliding pin 322 then drives the welding torch 315 on the locking ring 316. The welding torch 315 moves reciprocally laterally, linearly welding along the cross-section of the iron core. Each silicon steel sheet is spot-welded to form a single unit. The entire workpiece, the welding torch 315, has two symmetrical sets. The synchronous movement of the two sets of torches reduces the risk of the iron core warping due to welding on one side only. Utilizing the characteristics of synchronous welding, deformation is reduced. Furthermore, the positioning element 4 abuts against the upper and lower sides, effectively suppressing thermal expansion deformation of the iron core and ultimately improving the quality of the welded iron core. The entire equipment is designed for reciprocating welding, i.e., single-sided double welding. When the welding torch 315 moves to the far left, it returns to its original position due to the design of the spiral groove 318. This is because a single weld may only spot-weld the iron core for initial positioning; the second return position represents the actual linear welding process.When the sliding pin 322 moves to the rightmost position along with the welding torch 315, the push shaft 314 on the limit bracket 313 will abut against the magnetic ring 320 and simultaneously push the magnetic ring 320 to the right, so that the magnetic ring 320 is magnetically fixed to the bracket 1. When the magnetic ring 320 moves to the right, the position below it will simultaneously push the rear gear 305 to the right, thereby controlling the rear gear 305 to disengage from the small gear ring 310. After the rear gear 305 disengages, it will also simultaneously push the sliding bracket 307 and the bearing bracket 309 to the right. The bearing bracket 309 will then simultaneously drive the rotating gear 303 to the right, ultimately controlling the rotating gear 303 to mesh with the large gear ring 304. At this point, the welding torch 315 will not move, but will enter the switching stage. At this time, the rotation of the drive key shaft 302 will drive the rotation of the rotating gear 303, and the rotation of the rotating gear 303 will drive the large gear ring 304, which meshes with it, to rotate. As the large gear ring 304 rotates, it drives the entire workpiece to rotate synchronously, thereby changing the welding position. After the large gear ring 304 rotates 90 degrees, the sliding plate 306 fixed on the side will form a pressing contact with the patch 308, which will then push the sliding frame 307 to the left again. The leftward movement of the sliding frame 307 will drive the bearing frame 309, the rear gear 305, and the rotating gear 303 to the left. Under the condition that the rotating gear 303 disengages, the rear gear 305 will re-mesh with the small gear ring 310. At this time, the welding torch 315 will start again to realize the axial displacement spot welding operation and welding operation. The whole process realizes the effect of automatic welding and automatic repositioning, eliminating the need for redundant manual operations, ensuring the welding quality of the iron core, and eliminating the need to disassemble and assemble the iron core tooling. By repeating this process, the iron core can be continuously welded. The iron core enters from the right and exits from the left on the bearing 2, thereby improving the overall welding efficiency and welding convenience of the iron core.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A welding device for the core of a power transformer, characterized in that, include: Support (1); The support component (2) is used to support the transformer core; Welded component (3) is used for automatic repositioning and cyclic welding with the transformer core; The welded component (3) includes a driving component, a machining component, a repositioning component, and a triggering component; The processed parts are automatically welded to the transformer core in an axial reciprocating manner. The transposition component performs positional changes on the workpiece after welding. The driving component is connected to the processing component and the shifting component respectively through the action of the trigger component; The processing component includes a slide (311), the slide (311) has a groove (312) inside, a limit frame (313) is slidably connected inside the groove (312), a locking ring (316) is connected to the bottom of the limit frame (313), a welding torch (315) is engaged inside the locking ring (316), a sliding pin (322) is connected to the bottom of the locking ring (316), a rotating shaft (317) is provided at the bottom of the sliding pin (322), a spiral groove (318) is provided on the rotating shaft (317), the sliding pin (322) is slidably connected inside the spiral groove (318), a connecting gear (319) is connected to one end of the rotating shaft (317), and the connecting gear (319) is connected to the driving component for transmission. The processing parts are provided in two sets, and the two sets of processing parts are symmetrically distributed with the center line of the bracket (1) as the axis of symmetry.

2. The power transformer core welding equipment according to claim 1, characterized in that: The driving component includes a drive motor (301), which is mounted on the bottom of the bracket (1). The output end of the drive motor (301) is connected to a drive key shaft (302), and a rear gear (305) is connected to the drive key shaft (302). A small gear ring (310) meshes with the rear gear (305), and the surface of the small gear ring (310) meshes with two connecting gears (319).

3. The power transformer core welding equipment according to claim 2, characterized in that: The shifting component includes a large gear ring (304), which is rotatably connected to the bracket (1). A rotating gear (303) is provided below the large gear ring (304), which is connected to the drive key shaft (302). The rotating shaft (317) is rotatably connected to the large gear ring (304).

4. The power transformer core welding equipment according to claim 3, characterized in that: The trigger includes a bearing bracket (309), one side of which is rotatably connected to the rear gear (305), and the other side of which is rotatably connected to the rotating gear (303). A sliding bracket (307) is connected to the bearing bracket (309), and both sides of the sliding bracket (307) are slidably connected to the bracket (1). A patch (308) is connected to the sliding bracket (307). A sliding piece (306) is fixedly connected to the side of the large gear ring (304). When the sliding piece (306) rotates with the large gear ring (304), it will abut against the patch (308).

5. The power transformer core welding equipment according to claim 4, characterized in that: The trigger also includes a push shaft (314), which is fixed on the limit frame (313). A slide rod (321) is slidably connected to the bracket (1), and a magnetic ring (320) is connected to the slide rod (321). When the push shaft (314) slides along with the limit frame (313), it will abut against the magnetic ring (320).

6. The power transformer core welding equipment according to claim 4, characterized in that: The slide (306) is provided in four parts, and the four slides (306) are arranged in a circular array with the center of the large toothed ring (304) as the axis of symmetry. The small toothed ring (310) is rotatably connected to the large toothed ring (304) through a connector.

7. The power transformer core welding equipment according to claim 5, characterized in that: The magnetic ring (320) is magnetic, and when the magnetic ring (320) moves to the right, it will be magnetically connected to the bracket (1). The bottom side of the magnetic ring (320) abuts against the rear gear (305).

8. The power transformer core welding equipment according to claim 3, characterized in that: It also includes a positioning component (4), which includes a support frame (402). The two sides of the support frame (402) are connected to a large gear ring (304). A dual-shaft cylinder (401) is fixedly installed at the bottom of the support frame (402). A crank (403) is rotatably connected to the output shaft of the dual-shaft cylinder (401). A tripod (404) is rotatably connected to the crank (403). The tripod (404) is rotatably connected to the support frame (402) through a plate.

9. The power transformer core welding equipment according to claim 8, characterized in that: The bottom of the tripod (404) is connected to a ball sleeve (405), and a ball (406) is fitted inside the ball sleeve (405). The two balls (406) respectively abut against the two sides of the iron core.

10. The power transformer core welding equipment according to claim 1, characterized in that: The bearing component (2) includes two bearing support rods (201), with an iron core inserted through the bearing support rods (201). The bottom of the bearing support rods (201) is rotatably connected to multiple sets of support rods (202), and each set of support rods (202) has two rods. A contraction groove (206) is provided on the lower surface of the bearing support rods (201). A slip ring (204) is slidably connected to the bearing support rods (201), and a pull rod (203) is connected to the slip ring (204). A push ring (205) is connected to the pull rod (203).

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