An electric power transformer core welding apparatus

Abstract

The application relates to the technical field of core welding, and discloses a power transformer core welding device, which comprises a support, a bearing part for bearing a transformer core, and a welding part for automatically position-changing and circularly welding the transformer core; the welding part comprises a driving part, a processing part, a position-changing part and a triggering part; the processing part performs automatic axial reciprocating welding on the transformer core; and the position-changing part performs position conversion on the processing part after welding. The power transformer core welding device can realize the double effects of spot welding and linear welding through the reciprocating action of a welding gun by arranging the processing part, the symmetrical structure can effectively reduce the situation that one side is raised due to unilateral welding, the whole welding process is more automatic, and the operator is not required to perform redundant operation, so that the welding efficiency and convenience of the core are improved from the side.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of core welding, in particular to a power transformer core welding equipment. BACKGROUND

[0002] The transformer core is the main magnetic circuit part of the transformer, which is usually stacked by silicon steel sheets, and the core has an important influence on the transmission power of the transformer. The common transformer core is welded by two E-shaped cores, but the existing transformer core welding equipment still has some defects.

[0003] Especially for the power transformer, the volume of the core is generally large or heavy. The existing technology has a single welding method for the core, which can only be welded on one side. Manual operation is required to re-clamp and weld the other side of the transformer core. Not only is the operation cumbersome and inconvenient, but also because of the high temperature generated by welding, thermal expansion and cold contraction are likely to occur. At this time, welding the other side is likely to cause imbalance in the welding height, that is, the gap of each silicon steel sheet will be different, and the final core product will be in a high-low state. Moreover, the welding efficiency is also low, and the automatic transposition and welding cannot be realized. Therefore, a power transformer core welding equipment is proposed to solve the above problems. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the defects of the prior art, the present application provides a power transformer core welding equipment, which solves the problem of thermal expansion and cold contraction deformation welding when the transformer core is welded in the prior art, and finally reduces the quality of the finished product of the core, while solving the problem of low welding efficiency of the core.

[0006] (II) Technical solutions

[0007] To achieve the above purpose, the present application provides the following technical solutions: a power transformer core welding equipment, comprising a support, a bearing member for bearing a transformer core, and a welding member for automatic transposition type circular welding with the transformer core. The welding member comprises a driving member, a processing member, a transposition member and a triggering member. The processing member performs axial reciprocating automatic welding on the transformer core. The transposition member performs position conversion after welding of the processing member. The driving member is in transmission connection with the processing member and the transposition member through the action of the triggering member. The processing member is provided with two groups, and the two groups of processing members are symmetrically distributed with the center line of the support as the symmetry axis.

[0008] The processing piece includes a sliding frame, a sliding groove is formed in the sliding frame, a limiting frame is slidably connected in the sliding groove, a locking ring is connected to the bottom of the limiting frame, a welding gun is clamped in the locking ring, a sliding pin is connected to the bottom of the locking ring, a rotating shaft is arranged at the bottom of the sliding pin, a spiral groove is formed in the rotating shaft, the sliding pin is slidably connected in the spiral groove, a connecting gear is connected to one end of the rotating shaft, and the connecting gear is in transmission connection with a driving piece.

[0009] Preferably, the driving piece includes a driving motor, the driving motor is installed at the bottom of the support, a driving key shaft is connected to the output end of the driving motor, a rear gear is connected to the driving key shaft, a small tooth ring is engaged with the rear gear, and the surface of the small tooth ring is in meshing connection with the two connecting gears.

[0010] Preferably, the transposition piece includes a large tooth ring, the large tooth ring is rotatably connected to the support, a rotating gear is arranged below the large tooth ring, the rotating gear is connected to the driving key shaft, and the rotating shaft is rotatably connected to the large tooth ring.

[0011] Preferably, the trigger piece includes a bearing frame, one side of the bearing frame is rotatably connected with the rear gear, the other side of the bearing frame is rotatably connected with the rotating gear, a sliding frame is connected to the bearing frame, the two sides of the sliding frame are slidably connected to the support, a patch is connected to the sliding frame, a sliding plate is fixedly connected to the side surface of the large tooth ring, and the sliding plate will abut against the patch when the large tooth ring rotates.

[0012] Preferably, the trigger piece further includes a push shaft, the push shaft is fixed to the limiting frame, a sliding rod is slidably connected to the support, a magnetic ring is connected to the sliding rod, and the push shaft will abut against the magnetic ring when the limiting frame slides.

[0013] Preferably, the sliding plate is provided with four, the four sliding plates are circularly arranged with the center of the large tooth ring as the axis of symmetry, and the small tooth ring is rotatably connected to the large tooth ring through a connecting piece.

[0014] Preferably, the magnetic ring has magnetism, and the magnetic ring is magnetically connected with the support when abutting and moving to the right, and the bottom side surface of the magnetic ring abuts against the rear gear.

[0015] Preferably, the positioning piece further includes a support frame, the two sides of the support frame are connected to the large tooth ring, a double-shaft air cylinder is fixedly installed at the bottom of the support frame, output shafts of the double-shaft air cylinder are rotatably connected with cranks, the cranks are rotatably connected with tripods, and the tripods are rotatably connected to the support frame through a plate body.

[0016] Preferably, the bottom of the tripod is connected with a ball sleeve, the inside of the ball sleeve is sleeved with a ball, and the two balls are respectively abutted on the two side surfaces of the iron core.

[0017] The bearing piece comprises two bearing struts, the iron core is inserted on the bearing struts, the bottom of the bearing struts is rotationally connected with a plurality of groups of supporting rods, each group of supporting rods has two supporting rods, the lower surface of the bearing struts is provided with a contraction groove, a sliding ring is slidably connected on the bearing struts, a pull rod is connected on the sliding ring, and a push ring is connected on the pull rod.

[0018] (Three) beneficial effects

[0019] Compared with the prior art, the power transformer iron core welding equipment has the following beneficial effects:

[0020] 1. The power transformer iron core welding equipment can realize the double effects of spot welding and linear welding through the reciprocating action of the welding gun, and the symmetrical structure can effectively reduce the situation that the other side is raised due to unilateral welding, and the whole welding process is more automated, so that the operation of the operator is unnecessary, thereby improving the welding efficiency and convenience of the iron core from the side.

[0021] 2. The power transformer iron core welding equipment can automatically switch the welding and transposition through the trigger linkage of the trigger piece, the transposition piece and the processing piece, so as to realize the rapid and continuous multi-surface welding, reduce the thermal deformation of the iron core, improve the welding efficiency, improve the welding quality of the iron core, improve the finished product welding quality of the iron core, and reduce the deformation amount. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a whole structure schematic view of the power transformer iron core welding equipment proposed in the application;

[0023] Figure 2 It is a processing piece structure schematic view of the power transformer iron core welding equipment proposed in the application;

[0024] Figure 3 It is a connection structure schematic view of the driving piece of the power transformer iron core welding equipment proposed in the application;

[0025] Figure 4 It is a connection structure schematic view of the welding gun of the power transformer iron core welding equipment proposed in the application;

[0026] Figure 5 It is a large gear ring structure schematic view of the power transformer iron core welding equipment proposed in the application;

[0027] Figure 6A bearing frame connecting structure diagram of a power transformer core welding equipment is provided for the present application;

[0028] Figure 7 A positioning member structure diagram of a power transformer core welding equipment is provided for the present application;

[0029] Figure 8 A bearing member structure diagram of a power transformer core welding equipment is provided for the present application;

[0030] Figure 9 A bearing support rod structure diagram of a power transformer core welding equipment is provided for the present application.

[0031] In the figure: 1, support; 2, bearing member; 201, bearing support rod; 202, support rod; 203, pull rod; 204, slip ring; 205, push ring; 206, contraction groove; 3, welding member; 301, driving motor; 302, driving key shaft; 303, rotating gear; 304, large tooth ring; 305, rear gear; 306, sliding sheet; 307, sliding frame; 308, patch; 309, bearing frame; 310, small tooth ring; 311, sliding frame; 312, sliding groove; 313, limiting frame; 314, push shaft; 315, welding gun; 316, locking ring; 317, rotating shaft; 318, spiral groove; 319, connecting gear; 320, magnetic ring; 321, sliding rod; 322, sliding pin; 4, positioning member; 401, double-shaft air cylinder; 402, support frame; 403, crank; 404, tripod; 405, ball sleeve; 406, ball. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Please refer to Figures 1-8 A power transformer core welding equipment, comprising a support 1; a bearing member 2 for bearing a transformer core; a welding member 3 for automatic transposition type circular welding with the transformer core; the welding member 3 comprises a driving member, a processing member, a transposition member and a triggering member; the processing member performs axial reciprocating automatic welding on the transformer core; the transposition member performs position conversion after welding of the processing member; the driving member is in transmission connection with the processing member and the transposition member through the action of the triggering member. The processing member is provided with two groups, and the two groups of processing members are symmetrically distributed with the center line of the support 1 as the symmetry axis.

[0034] In the embodiment, the workpiece comprises a sliding frame 311, the inside of the sliding frame 311 is provided with a sliding groove 312, the inside of the sliding groove 312 is slidably connected with a limiting frame 313, the bottom of the limiting frame 313 is connected with a locking ring 316, the inside of the locking ring 316 is clamped with a welding gun 315, the sliding frame 311 serves as a basic support component of the welding execution mechanism, and the inside of the sliding frame 311 is precisely machined with a sliding groove 312 in the axial direction. The limiting frame 313 is slidably and fitly installed in the sliding groove 312, the limiting frame 313 not only plays a guiding and limiting role, but also is fixedly connected with a locking ring 316 through the bottom of the limiting frame 313, so as to form a stable suspension structure. The inside of the locking ring 316 is designed with an adjustable clamping mechanism, which is used for reliably clamping and fixing the welding gun 315, so as to ensure the accuracy and stability of the position of the welding gun during the welding process. The bottom of the locking ring 316 is connected with a sliding pin 322, the bottom of the sliding pin 322 is provided with a rotating shaft 317, the rotating shaft 317 is provided with a helical groove 318, the sliding pin 322 is slidably connected in the inside of the helical groove 318, one end of the rotating shaft 317 is connected with a connecting gear 319, and the connecting gear 319 is in transmission connection with a driving member. In order to further realize the axial automatic reciprocating movement of the welding gun 315, the bottom of the locking ring 316 is further connected with a sliding pin 322. The sliding pin 322 extends downward and cooperates with a rotating shaft 317. The surface of the rotating shaft 317 is machined with a helical groove 318 with a specific lead, the end of the sliding pin 322 is embedded in the inside of the helical groove 318, so as to form a sliding pair. When the rotating shaft 317 rotates under the driving of the driving member, the rotary motion can be converted into the linear reciprocating motion of the welding gun 315 in the axial direction through the interaction between the helical groove 318 and the sliding pin 322, so as to realize the feeding and returning action during the welding process. One end of the rotating shaft 317 is provided with a connecting gear 319, the gear is in transmission connection with a driving member, receives the power input from the driving system, and ensures the coordination and synchronization of the whole welding feeding movement. Through the above structure, the workpiece realizes the accurate positioning, reliable clamping and automatic reciprocating welding function of the welding gun 315, and significantly improves the automation degree and process consistency of the core welding.

[0035] Further, the driving member comprises a driving motor 301, which is the power source and core transmission mechanism of the whole welding device. The core of the driving member is the driving motor 301. The driving motor 301 is preferably a servo motor or a stepper motor, which is fixedly installed at the bottom of the device support 1 to ensure the stability of the whole device structure and the reliability of the power output. The driving motor 301 is installed at the bottom of the support 1, and the output end of the driving motor 301 is connected with a driving key shaft 302, the driving key shaft 302 is connected with a rear gear 305, the rear gear 305 is engaged with a pinion ring 310, and the surface of the pinion ring 310 is engaged with two connecting gears 319. The pinion ring 310 is not fixedly installed, but is rotationally connected with the gear ring 304 or other support structures through bearings and other connecting members not completely shown in the figure, so that it can rotate and revolve under certain conditions. The outer tooth surface of the pinion ring 310 is simultaneously engaged with the connecting gears 319 in the left and right machining members, so that the single rotary power generated by the driving motor 301 is synchronously and symmetrically transmitted to the two symmetrically distributed welding execution units.

[0036] Further, the transposition member comprises a gear ring 304, which is rotationally connected to the support 1, and a rotary gear 303 is arranged below the gear ring 304, the rotary gear 303 is connected to the driving key shaft 302, and a rotary shaft 317 is rotationally connected to the gear ring 304. The gear ring 304 is rotationally connected to the main support 1 of the device through a bearing structure, so that it can perform accurate rotary motion in the horizontal plane about its own axis. A rotary gear 303 is arranged below the gear ring 304. The rotary gear 303 is slidingly installed in the driving key shaft 302 through a key groove and rotates synchronously with the driving key shaft 302. In the initial "welding mode", the rotary gear 303 is not engaged with the gear ring 304 and is in an idle state, and power is not transmitted to the transposition system. By triggering the movement of the sliding frame 307, the entire transmission system including the driving key shaft 302 and the rotary gear 303 thereon is axially displaced. This makes the originally separated rotary gear 303 axially move and engage with the lower end surface teeth of the gear ring 304. Once the engagement is established, the power of the driving motor 301 is transmitted to the rotary gear 303 through the driving key shaft 302, and the rotary gear 303 drives the gear ring 304 to rotate. When the gear ring 304 rotates, all the machining members installed thereon, usually two symmetric groups, are rotated together by 90° or a predetermined angle about the center axis of the device, so as to accurately switch the welding torch 315 to the next welding station. The transposition member cleverly realizes the automatic and accurate switching of the welding station through the rotary motion of the gear ring 304, the axial clutch engagement of the rotary gear 303, and the power transfer of the driving key shaft 302.

[0037] In addition, the trigger piece includes a bearing frame 309, one side of the bearing frame 309 is rotatably connected with the rear gear 305, the other side of the bearing frame 309 is rotatably connected with the rotating gear 303, the bearing frame 309 is connected with a sliding frame 307, both sides of the sliding frame 307 are slidingly connected with the support 1, the sliding frame 307 is connected with a patch 308, the side surface of the large tooth ring 304 is fixedly connected with a sliding sheet 306, the sliding sheet 306 will abut against the patch 308 when the large tooth ring 304 rotates. The trigger piece is a key sensing and executing mechanism for automatically switching the control device between the "welding mode" and the "position changing mode", both sides of the bearing frame 309 are rotatably connected with the rear gear 305 and the rotating gear 303 through bearings. This means that the rear gear 305 and the rotating gear 303 can rotate freely independently of the bearing frame 309, but their axial positions are determined by the bearing frame 309, and the three become a synchronous moving whole, the upper part of the bearing frame 309 is fixedly connected with a sliding frame 307. Both sides of the sliding frame 307 are slidingly connected with the main support 1 through slide rails or guide grooves and the like, so that the movement of the entire transmission unit including the bearing frame 309, the rear gear 305 and the rotating gear 303 is constrained to be a strict axial diagrammatic left-right straight line movement. The sliding frame 307 is installed with a patch 308, which serves as a static trigger target point. Correspondingly, on the side surface of the large tooth ring 304, a sliding sheet 306 is fixedly installed, in the "position changing mode", when the large tooth ring 304 is driven to rotate, the sliding sheet 306 installed on the side surface also revolves. When the large tooth ring 304 rotates by 90° or other preset angles, and the number of sliding sheets 306 determines that the work position switching is completed, one of the sliding sheets 306 rotates to the position abutting against the patch 308 on the sliding frame 307. With the continuous slight rotation of the large tooth ring 304, the sliding sheet 306 continuously presses the patch 308. This force is transmitted through the sliding frame 307, pushing the entire integrated transmission unit including the bearing frame 309, the rear gear 305 and the rotating gear 303 to move axially to the left. Therefore, the trigger piece converts the rotation angle signal of the large tooth ring 304 into the axial displacement signal of the transmission system through the mechanical abutment of the sliding sheet 306 and the patch 308, and finally realizes the automatic and accurate switching from the "position changing mode" to the "welding mode".

[0038] In addition, the trigger piece further comprises a push shaft 314 fixed on the limiting frame 313, the support 1 is slidably connected with a slide rod 321, the slide rod 321 is connected with a magnetic ring 320, and the push shaft 314 will abut against the magnetic ring 320 when sliding with the limiting frame 313. Since the limiting frame 313 performs synchronous axial reciprocating movement with the welding gun 315, the position of the push shaft 314 directly reflects the real-time position of the welding gun 315, and on the main support 1, an axial slide rod 321 is arranged. The slide rod 321 is fixedly installed with a magnetic ring 320. The magnetic ring 320 is made of a permanent magnetic material and has strong magnetism. In the “welding mode”, the welding gun 315 performs reciprocating welding movement under the driving of the rotating shaft 317. When a welding stroke is about to end, the welding gun 315 drives the limiting frame 313 to move to the farthest end of the axial stroke, for example, the rightmost end. At this time, the push shaft 314 fixed on the limiting frame 313 moves and mechanically abuts against the magnetic ring 320 on the slide rod 321, the push shaft 314 continues to advance and pushes 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 fixation: when the magnetic ring 320 is pushed to the predetermined position, the strong magnetic force thereof will cause the magnetic attraction connection with the surface of the steel support 1 on the side, thereby locking itself at the position, providing a basis for subsequent mode keeping; pushing gear disengagement: the movement of the slide rod 321 will drive the magnetic ring 320 to synchronously displace. The bottom side surface of the magnetic ring 320 is designed to be in contact with the end surface of the rear gear 305. Therefore, the right movement of the magnetic ring 320 will push the rear gear 305 and the entire transmission unit including the rotating gear 303 connected with the rear gear 305 through the bearing frame 309 to move to the right. The rear gear 305 is disengaged from the small tooth ring 310, the welding power is cut off, the welding gun 315 stops moving, the rotating gear 303 moves to the right and enters the meshing state with the large tooth ring 304, and the preparation for position changing is completed. Therefore, the trigger mechanism composed of the push shaft 314, the slide rod 321 and the magnetic ring 320 converts the stroke end signal of the welding gun 315 into the axial displacement of the transmission system through mechanical abutment and magnetic force locking, thereby accurately and automatically triggering the equipment to convert from the “welding mode” to the “position changing mode”, and is a control switch of the automatic cycle starting point.

[0039] It is worth noting that the four sliding pieces 306 are arranged in a circular array with the center of the large gear ring 304 as the axis of symmetry, and the small gear ring 310 is rotatably connected to the large gear ring 304 by a connecting piece. The magnetic ring 320 has magnetism, and when the magnetic ring 320 abuts the right shift, it will be magnetically connected to the support 1, and the bottom side of the magnetic ring 320 abuts the rear gear 305. The sliding pieces 306 fixedly connected to the side of the large gear ring 304 are provided with four and arranged in a 90°-interval circular array 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 circumferential movement of the large gear ring 304 into fixed angular beats. Each sliding piece 306 represents a 90° rotation position. When the large gear ring 304 rotates one revolution, the four sliding pieces 306 will trigger mode switching in turn, which enables the device to complete welding at four stations in one revolution, greatly improving work efficiency and ensuring the absolute accuracy of the shift angle. In this technical solution, the gear sides of the transmission components (the large gear ring 304, the small gear ring 310, the rear gear 305, and the rotating gear 303) are all tapered structures, so that the gears can be disengaged and re-engaged after disengagement. The taper can accurately cut into the teeth of the two gears, avoiding the re-engagement after disengagement and the collision of the teeth of the two gears.

[0040] It is worth mentioning that the positioning member 4 is also included, the positioning member 4 includes a support frame 402, both sides of the support frame 402 are connected to the gear ring 304, a double-shaft air 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 double-shaft air cylinder 401, a tripod 404 is rotatably connected to the crank 403, and the tripod 404 is rotatably connected to the support frame 402 through a plate body. Both ends of the support frame 402 are fixedly connected to the gear ring 304 by bolts or welding. This key installation mode means that the entire positioning member 4 will move synchronously with the gear ring 304 as a whole. Regardless of how the welding station switches, the positioning member 4 can always accurately align and act on the iron core part that needs to be welded at present, realizing the linkage of clamping and transposition. A double-shaft air cylinder 401 is fixedly installed at the bottom center of the support frame 402. The air cylinder serves as the power source of the positioning member 4, and has the characteristics of two output shafts that can be synchronously extended or retracted, and can provide symmetrical driving force. The end of each output shaft is rotatably connected to a crank 403 through a hinge or a bearing. The crank 403 is a force transmission and motion conversion mechanism, one end of which is connected to the output shaft of the air cylinder, and the other end is rotatably connected to a tripod 404 through a pin shaft. The tripod 404 is a key lever mechanism. The middle part is rotatably connected to the side wall of the support frame 402 through a fixed plate body or a rotating shaft. This connection point constitutes the fulcrum of the movement of the tripod 404. The bottom of the tripod 404 is connected to a ball sleeve 405, the inside of the ball sleeve 405 is sleeved with a ball 406, and the two balls 406 abut against the two side surfaces of the iron core. Because the entire workpiece is to be rotated and transposed subsequently, the balls 406 are used to realize rotary rolling on the side surface of the iron core at this time, so as to avoid excessive extrusion friction force, which can cause extrusion wear of the surface of the iron core.

[0041] It is worth mentioning that the carrier 2 includes two bearing rods 201, the core is inserted on the bearing rods 201, the bottom of the bearing rods 201 is rotationally connected with a plurality of support rods 202, each group of support rods 202 has two, the lower surface of the bearing rods 201 is provided with a contraction groove 206, the bearing rods 201 are slidingly connected with a sliding ring 204, the sliding ring 204 is connected with a pull rod 203, and the pull rod 203 is connected with a push ring 205. The core is inserted in the two bearing rods 201, the bearing rods play a guiding role and are tracks for the movement of the core, and a plurality of support rods 202 are rotationally connected with the bottom of each bearing rod 201 along the length direction. Each group of support rods 202 is composed of two support rods 202 and is hingedly connected to the two sides of the bottom of the bearing rod, forming a support structure similar to a "person" shape. The ends of the support rods 202 are in contact with the ground or the equipment foundation and jointly bear the weight of the core and the bearing rods 201, in order to realize the automatic retraction and extension of the support rods 202, the lower surface of the bearing rods 201 is provided with a contraction groove 206 corresponding to the hinge point position of each group of support rods 202. The groove provides a storage space for the rotation of the support rods 202, when the external pushing force such as a mechanical hand or a hydraulic cylinder pushes the core to move forward along the bearing rods 201, the core first contacts and passes through the frontmost group of support rods 202. The lower surface of the core will extrude the top of the support rods 202, forcing the pair of support rods 202 to rotate downward around the hinge point until they are completely stored in the corresponding contraction groove 206, thereby leaving space for the core to pass through, once the core completely passes through the group of support rods 202, the pair of support rods 202 will automatically reset to the vertical state under the action of gravity due to the loss of pressure, waiting for the core. At the same time, the subsequent support rod 202 group repeats the retraction and extension process. The push ring 205 and the sliding ring 204 are linked through the pull rod 203 to ensure uniform transmission of the pushing force. By controlling the pushing stroke of the push ring 205, the core can be accurately delivered to the preset welding station.

[0042] 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 slide pin 322 moves to the rightmost position with the welding gun 315, the push shaft 314 on the limiting frame 313 will abut against the magnetic ring 320 at this time, and synchronously push the magnetic ring 320 to move right, so that the magnetic ring 320 is magnetically attracted and fixed with the support 1, and when the magnetic ring 320 moves right, the position below it will synchronously push the rear gear 305 to move right, thereby controlling the rear gear 305 to disengage with the pinion ring 310, and after the rear gear 305 disengages, it will also synchronously push the sliding frame 307 and the bearing frame 309 to move right, and the bearing frame 309 will synchronously drive the rotating gear 303 to move right, finally controlling the rotating gear 303 to engage with the gear ring 304, at this time the state is that the welding gun 315 will not move, but to the position changing stage, under the rotation of the driving key shaft 302, it will drive the rotation of the rotating gear 303, and the rotation of the rotating gear 303 will drive the rotation of the gear ring 304 engaged with it, and the rotation of the gear ring 304 will drive the synchronous rotation of the entire workpiece, so as to change the welding position, after the gear ring 304 rotates by ninety degrees, the slide plate 306 fixed on the side will form extrusion contact with the pad 308, thereby pushing the sliding frame 307 to move left again, and the left movement of the sliding frame 307 drives the bearing frame 309, the rear gear 305 and the rotating gear 303 to move left, so that the rear gear 305 re-engages with the pinion ring 310 under the condition that the rotating gear 303 disengages, at this time the welding gun 315 will start again to realize the axial displacement spot welding operation and welding operation, the whole realizes the effect of automatic welding and automatic position changing, without the need for redundant manual operation, ensuring the welding quality of the core, without the need to disassemble and assemble the core tool, so that the reciprocating welding of the core can be continuous, the core moves right on the carrier 2 and moves left, thereby improving the overall welding efficiency and welding convenience of the core.

[0043] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or equipment including the element.

Claims

1. An electric power transformer core welding apparatus, characterized by, Include: Support (1); Carrying (2) for carrying transformer core; Welding (3) for automatic transposition type cycle welding with transformer core; The welding (3) includes a drive, a processing piece, a transposition piece and a trigger; The processing piece performs axial reciprocating automatic welding on the transformer core; The transposition piece converts the position of the processing piece after welding; The drive is respectively connected with the processing piece and the transposition piece through the action of the trigger; The processing piece includes a sliding frame (311), the inside of the sliding frame (311) is provided with a sliding groove (312), the inside of the sliding groove (312) is connected with a limiting frame (313) in sliding mode, the bottom of the limiting frame (313) is connected with a locking ring (316), the inside of the locking ring (316) is connected with a welding gun (315) in clamping mode, the bottom of the locking ring (316) is connected with a sliding pin (322), the bottom of the sliding pin (322) is provided with a rotating shaft (317), the rotating shaft (317) is provided with a spiral groove (318), the sliding pin (322) is connected in the spiral groove (318) in sliding mode, one end of the rotating shaft (317) is connected with a connecting gear (319), the connecting gear (319) is connected with the drive in transmission mode; The processing piece is provided with two groups, and the two groups of processing pieces are symmetrically distributed with the center line of the support (1) as the axis of symmetry; The drive includes a drive motor (301), the drive motor (301) is installed at the bottom of the support (1), the output end of the drive motor (301) is connected with a drive key shaft (302), the drive key shaft (302) is connected with a rear gear (305), the rear gear (305) is engaged with a small gear ring (310), the surface of the small gear ring (310) is engaged with two connecting gears (319); The transposition piece includes a large gear ring (304), the large gear ring (304) is rotatably connected on the support (1), a rotating gear (303) is arranged below the large gear ring (304), the rotating gear (303) is connected on the drive key shaft (302), and the rotating shaft (317) is rotatably connected on the large gear ring (304); The trigger includes a bearing frame (309), one side of the bearing frame (309) is rotatably connected with the rear gear (305), the other side of the bearing frame (309) is rotatably connected with the rotating gear (303), the bearing frame (309) is connected with a sliding frame (307), the two sides of the sliding frame (307) are connected with the support (1) in sliding mode, the sliding frame (307) is connected with a patch (308), the side surface of the large gear ring (304) is fixedly connected with a sliding plate (306), and the sliding plate (306) will abut against the patch (308) when the large gear ring (304) rotates.

2. A power transformer core welding apparatus as defined in claim 1, characterized in that: The trigger further comprises a push shaft (314) fixed on the limiting frame (313), the support (1) is slidably connected with a slide rod (321), the slide rod (321) is connected with a magnetic ring (320), and the push shaft (314) will abut against the magnetic ring (320) when the limiting frame (313) slides.

3. A power transformer core welding apparatus as defined in claim 2, characterized in that: The slide piece (306) is provided with four, and the four slide pieces (306) are circularly arranged with the center of the large gear ring (304) as the symmetry axis, and the small gear ring (310) is rotatably connected to the large gear ring (304) through the connecting piece.

4. A power transformer core welding apparatus as defined in claim 3, characterized in that: The magnetic ring (320) has magnetism, and the magnetic ring (320) is magnetically connected with the support (1) when abutting rightward, and the bottom side of the magnetic ring (320) abuts against the rear gear (305).

5. A power transformer core welding apparatus as defined in claim 1, wherein: Further comprising a positioning piece (4), the positioning piece (4) comprises a support frame (402), the both sides of the support frame (402) are connected to the large gear ring (304), the bottom of the support frame (402) is fixedly installed with a double-shaft air cylinder (401), the output shafts of the double-shaft air cylinder (401) are rotatably connected with cranks (403), the cranks (403) are rotatably connected with tripods (404), and the tripods (404) are rotatably connected to the support frame (402) through the plate body.

6. A power transformer core welding apparatus as defined in claim 5, characterized in that: The bottom of the tripod (404) is connected with a ball sleeve (405), the inside of the ball sleeve (405) is sleeved with a ball (406), and the two ball (406) abut against the both side surfaces of the iron core.

7. A power transformer core welding apparatus as defined in claim 1, wherein: The bearing piece (2) comprises two bearing support rods (201), the iron core is inserted on the bearing support rod (201), the bottom of the bearing support rod (201) is rotatably connected with a plurality of support rods (202), each group of support rods (202) has two, the lower surface of the bearing support rod (201) is provided with a contraction groove (206), the bearing support rod (201) is slidably connected with a slide ring (204), the slide ring (204) is connected with a pull rod (203), and the pull rod (203) is connected with a push ring (205).

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