CN116551182A - Welding system and welding method for laminated state retaining structure of transformer core - Google Patents
Welding system and welding method for laminated state retaining structure of transformer core Download PDFInfo
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- CN116551182A CN116551182A CN202310615173.3A CN202310615173A CN116551182A CN 116551182 A CN116551182 A CN 116551182A CN 202310615173 A CN202310615173 A CN 202310615173A CN 116551182 A CN116551182 A CN 116551182A
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- welded
- welding
- guide rail
- transformer
- transformer body
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- 238000003466 welding Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims description 15
- 238000009826 distribution Methods 0.000 claims abstract 2
- 238000003825 pressing Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 240000001085 Trapa natans Species 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 235000009165 saligot Nutrition 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a welding system of a laminated state holding structure of a transformer core, which comprises a welding fixture, wherein the welding fixture comprises an equipment bracket, a vertical switching motor with a braking function is fixedly arranged at the bottom of the equipment bracket, the upper end of an output shaft of the switching motor is fixedly connected with a rotating platform, four lifters which are in rectangular distribution are arranged on the rotating platform, the upper ends of telescopic rods of the lifters are fixedly connected with lifting seats, clamping grooves are formed in the upper sides of the lifting seats, and four column boxes on the lower side of a lower frame of a transformer body to be welded are respectively clamped into the clamping grooves on the upper sides of the four lifting seats; the distance between the tail end of the welding gun and the gap to be welded is always consistent, so that the uniformity of laser welding is ensured.
Description
Technical Field
The invention belongs to the field of transformer manufacturing processes.
Background
The silicon steel laminated iron core is formed by laminating a plurality of silicon steel sheets, in the actual working process, the tightly laminated state of each silicon steel sheet needs to be kept, and in order to keep the laminated state, the most common structure is as follows: through holes penetrating along the laminating direction are formed in the transformer iron core, then bolts penetrate through the through holes and are locked, so that laminated silicon steel sheets on the transformer iron core are kept in a laminated state, the mode needs to be adopted to punch holes in each silicon steel sheet, the integrity of each silicon steel sheet is directly damaged, the integrity is incomplete and damaged, and the magnetic conductivity of the iron core is not affected in a negligible way;
the applicant designs a novel transformer structure which can realize the tight lamination state of each silicon steel sheet without punching the silicon steel sheet on a transformer iron core, and the novel specific transformer structure is as follows:
the novel transformer structure shown in fig. 1 and 2 comprises a transformer body 31, wherein the transformer body 31 comprises a transformer coil framework 22 and a transformer iron core 23 which is formed by laminating a plurality of silicon steel sheets and has a rectangular outer contour;
the upper end face and the lower end face of the transformer iron core 23 are respectively and parallelly attached with an upper frame 20 and a lower frame 20, four upper right-angle walls 21 extending downwards are respectively and integrally arranged on the lower side of the upper frame 20 along right-angle outlines of four vertex angles, and the four upper right-angle walls 21 wrap four water caltrops on the upper half part of the transformer iron core 23; four upwardly extending lower right angle walls 24 are integrally arranged on the upper side of the lower frame 26 along right angle outlines of four vertex angles respectively, and the four lower right angle walls 24 wrap four water caltrops of the lower half part of the transformer core 23;
the lower side of the lower frame 26 is integrally provided with a plurality of column boxes 25 with upper openings, and a stacked state maintaining spring 36 is coaxially arranged in each box body of the column boxes 25;
when the upper frame 20 and the lower frame 20 are respectively attached to the upper end surface and the lower end surface of the transformer core 23 in parallel, the joint between the lower end of each upper right-angle wall 21 and the upper end of each lower right-angle wall 24 forms a gap 44 to be welded, and when the gap 44 to be welded is welded along a gap path, the stacked state maintaining springs 36 in each column box 25 form an upward elastic pressing force on the lower end surface of the transformer core 23, so that the silicon steel sheets on the transformer core 23 are always in a stacked state.
In the specific processing technology of the novel transformer structure, the most critical step is to weld the gaps 44 to be welded on each side surface of the welded transformer body 31 in a consistent manner; the invention aims to design a corresponding welding system aiming at the technological requirements of the welding, and simultaneously, the economy of the welding system is considered.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides a welding system and a welding method of a laminated state retaining structure of a transformer core, which can realize the consistency of welding seams of each side face of a novel transformer.
The technical scheme is as follows: in order to achieve the above purpose, the welding system of the laminated state retaining structure of the transformer core comprises a welding fixture, wherein the welding fixture comprises an equipment bracket, a vertical switching motor with a braking function is fixedly arranged at the bottom of the equipment bracket, the upper end of an output shaft of the switching motor is fixedly connected with a rotating platform, four lifters which are distributed in a rectangular manner are arranged on the rotating platform, the upper ends of telescopic rods of the lifters are fixedly connected with lifting seats, clamping grooves are formed in the upper sides of the lifting seats, and four column boxes on the lower side of a lower frame of a transformer body to be welded are respectively clamped into the clamping grooves on the upper sides of the four lifting seats.
Further, a horizontal rectangular constraint ring is arranged above the rotary platform, the inner ring of the rectangular constraint ring is a rectangular bayonet, a rotary arm is fixed at the upper end of the rectangular bayonet of the rectangular constraint ring, an upward rotating shaft is fixed in the middle of the rotary arm, a fixed beam is fixedly arranged at the top of the equipment support, a bearing hole at the axis of the fixed beam is in running fit with the rotating shaft through a bearing, and the rotating shaft is coaxial with the output shaft; the lower surface of the rectangular constraint ring is downwards and parallelly pressed against the upper surface of the upper frame of the transformer body to be welded, and the transformer coil framework on the upper side of the transformer body to be welded is upwards clamped into the rectangular bayonet.
Further, the transformer body to be welded is clamped and pressed between each lifting seat and the rectangular constraint ring, the transformer body to be welded is pressed down by upper and lower clamps, and any one of four side surfaces of the transformer body to be welded forms a gap to be welded with two overlapped extension lines; and the rectangular constraint ring, the transformer body to be welded and the rotary platform are synchronously rotated along with the output shaft.
Further, one side of the rectangular constraint ring is provided with a horizontal guide rail, two ends of the guide rail are fixedly connected with passive sliding blocks, the rectangular constraint ring further comprises two pairs of fixed sliding rods which are horizontal and vertical to the guide rail, one end of each fixed sliding rod is fixed on the equipment support, and the other end of each fixed sliding rod is fixedly connected with a spring baffle disc; the fixed slide bar slides through the slide hole on the passive slide block, so that the passive slide blocks at two ends of the guide rail slide along the fixed slide bar, and the guide rail is provided with a driving slide block capable of actively displacing along the direction of the guide rail; and a laser welder is arranged at one side of the lower part of the driving sliding block, which is close to the transformer body to be welded, and the tail end of a welding gun of the laser welder corresponds to a gap to be welded on the transformer body to be welded.
Further, a roller with a vertical axis is rotatably arranged on one side of the driving sliding block, which is close to the rectangular constraint ring, through a roller bracket; the outer ring of the rectangular constraint ring is provided with four linear rollways, the joint of two adjacent linear rollways is in smooth rounded transition, and the idler wheel is tangent with one linear rollway.
Further, a spring is sleeved on one side of each fixed sliding rod, which is close to the spring baffle disc, and each spring forms elastic thrust to the passive sliding block, and under the force transmission, a jacking force F is formed between the roller and the tangent linear rollaway nest;
further, when the active slider actively displaces to the middle of the guide rail, there are two cases:
in the first case, as shown in the figure, if the linear roller path tangent to the roller is parallel to the guide rail, the extension line of the pressing force F of the linear roller path tangent to the roller pair intersects with the central axis of the rotating shaft;
in the second case, as shown in the figure, if the linear roller path tangent to the roller is not parallel to the guide rail, the extension line of the pressing force F of the linear roller path tangent to the roller pair is not intersected with the central axis of the rotating shaft; so that the pressing force F forms a torque on the rotating shaft.
Further, the welding method of the welding system of the laminated state maintaining structure of the transformer core comprises the following steps:
step one, assembling a transformer body to be welded on a welding fixture;
step two, controlling the active sliding block to actively displace to the middle part of the guide rail, wherein a linear rollaway nest tangential to the roller is spontaneously parallel to the guide rail, and braking the output shaft;
and thirdly, controlling the active sliding block to move along the guide rail, so that the tail end of a welding gun of the laser welder transversely scans two gaps to be welded on one side of the transformer body close to the laser welder, and welding the two gaps to be welded on one side close to the laser welder by using laser beams emitted by the tail end of the welding gun.
The beneficial effects are that: the scheme avoids using a high-precision motor, reduces the cost, and solves the problem that the switching motor is not a high-precision motor though the switching motor is not the high-precision motor; in the second and fourth steps: whether "first instance" or "second instance"; the linear roller path 11 tangent to the roller 15 spontaneously parallels the guide rail 9, so that two gaps 44 to be welded on the side of the transformer body 31 to be welded, which is close to the laser welder 41, parallels the guide rail 9
In the process of the third step, the distance between the tail end of the welding gun of the laser welder and two gaps to be welded is always in a consistent state in the process of transversely scanning the tail end of the welding gun of the laser welder and two gaps to be welded close to one side of the laser welder, so that the uniformity of laser welding is ensured;
in the fourth step, the welding gun automatically follows in the process of forcibly rotating the output shaft by about 90 degrees so as to prevent motion interference; after all gaps to be welded on four sides of the transformer body to be welded are welded, after a complete welded transformer body is formed, the laminated state maintaining springs in each column box form upward elastic jacking force on the lower end face of the transformer core, so that the silicon steel sheets on the transformer core are always in the laminated state.
Drawings
FIG. 1 is a schematic diagram of a novel transformer structure;
FIG. 2 is a cross-sectional view of the structure of the novel transformer;
FIG. 3 is a schematic structural view of a welding fixture;
FIG. 4 is a schematic view of the "first case" in top view;
FIG. 5 is a schematic view of the "second case" in top view;
FIG. 6 is a schematic illustration of FIG. 3 with the bracket removed;
FIG. 7 is an exploded view of FIG. 6;
fig. 8 is another schematic view of the active slider and the slide rail.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
The laminated state holding structure of the transformer core shown in fig. 1 and 2 comprises a transformer body 31, wherein the transformer body 31 comprises a transformer coil framework 22 and a transformer core 23 with a rectangular outer contour, which is formed by laminating a plurality of silicon steel sheets; the upper end face and the lower end face of the transformer iron core 23 are respectively and parallelly attached with an upper frame 20 and a lower frame 20, four upper right-angle walls 21 extending downwards are respectively and integrally arranged on the lower side of the upper frame 20 along right-angle outlines of four vertex angles, and the four upper right-angle walls 21 wrap four water caltrops on the upper half part of the transformer iron core 23; four upwardly extending lower right angle walls 24 are integrally arranged on the upper side of the lower frame 26 along right angle outlines of four vertex angles respectively, and the four lower right angle walls 24 wrap four water caltrops of the lower half part of the transformer core 23;
the lower side of the lower frame 26 is integrally provided with a plurality of column boxes 25 with upper openings, and a stacked state maintaining spring 36 is coaxially arranged in each box body of the column boxes 25;
when the upper frame 20 and the lower frame 20 are respectively attached to the upper end surface and the lower end surface of the transformer core 23 in parallel, the joint between the lower end of each upper right-angle wall 21 and the upper end of each lower right-angle wall 24 forms a gap 44 to be welded, and when the gap 44 to be welded is welded along a gap path, the stacked state maintaining springs 36 in each column box 25 form an upward elastic pressing force on the lower end surface of the transformer core 23, so that the silicon steel sheets on the transformer core 23 are always in a stacked state.
The welding system specific structure of the welding gap 44 with the above structure is as follows:
as shown in fig. 3 to 8, the welding fixture 71 comprises a welding fixture 71, wherein the welding fixture 71 comprises an equipment bracket 1, a vertical switching motor 2 with a braking function is fixedly arranged at the bottom of the equipment bracket 1, a rotary platform 4 is fixedly connected to the upper end of an output shaft 3 of the switching motor 2, four lifters 27 which are distributed in a rectangular shape are arranged on the rotary platform 4, lifting seats 34 are fixedly connected to the upper ends of telescopic rods 28 of the lifters 27, and clamping grooves 30 are formed in the upper sides of the lifting seats 34;
a horizontal rectangular constraint ring 17 is arranged above the rotary platform 4, the inner ring of the rectangular constraint ring 17 is a rectangular bayonet 33, a rotary arm 32 is fixed at the upper end of the rectangular bayonet 33 of the rectangular constraint ring 17, an upward rotary shaft 14 is fixed in the middle of the rotary arm 32, a fixed beam 16 is fixedly arranged at the top of the equipment support 1, a bearing hole 13 at the axis of the fixed beam 16 is in rotary fit with the rotary shaft 14 through a bearing, and the rotary shaft 14 is coaxial with the output shaft 3.
The four column boxes 25 at the lower side of the lower frame 26 of the transformer body 31 to be welded are respectively clamped into the clamping grooves 30 at the upper sides of the four lifting seats 34; the lower surface of the rectangular constraint ring 17 is downwards and parallelly pressed against the upper surface of the upper frame 20 of the transformer body 31 to be welded, and the transformer coil skeleton 22 on the upper side of the transformer body 31 to be welded is upwards clamped into the rectangular bayonet 33; the transformer body 31 to be welded is clamped between each lifting seat 34 and the rectangular constraint ring 17, the transformer body 31 to be welded is pressed down by upper and lower clamps, and any one of four side surfaces of the transformer body 31 to be welded forms a gap 44 to be welded with two overlapped extension lines; and the rectangular constraint ring 17, the transformer body 31 to be welded and the rotary platform 4 are all made to rotate synchronously with the output shaft 3.
One side of the rectangular constraint ring 17 is provided with a horizontal guide rail 9, two ends of the guide rail 9 are fixedly connected with a driven sliding block 7, the rectangular constraint ring also comprises two pairs of fixed sliding rods 8 which are horizontal and vertical to the guide rail 9, one end of each fixed sliding rod 8 is fixed on the equipment bracket 1, and the other end of each fixed sliding rod is fixedly connected with a spring baffle disc 5; the fixed slide bar 8 slides through the slide hole on the passive slide block 7, so that the passive slide blocks 7 at two ends of the guide rail 9 slide along the fixed slide bar 8, and the guide rail 9 is provided with a driving slide block 10 capable of actively displacing along the direction of the guide rail 9; a roller 15 with a vertical axis is rotatably arranged on one side of the driving sliding block 10, which is close to the rectangular constraint ring 17, through a roller bracket 12; the outer ring of the rectangular constraint ring 17 is provided with four linear rollways 11, the joint of two adjacent linear rollways 11 is provided with smooth rounded transitions 11.1, and the idler wheel 15 is tangent with one linear rollway 11.
The side of each fixed slide bar 8, which is close to the spring baffle disc 5, is sleeved with a spring 6, and each spring 6 forms elastic thrust to the passive slide block 7, and under the force transmission, a jacking force F is formed between the idler wheel 15 and the tangent linear rollaway nest 11.
A laser welder 41 is arranged at one side of the lower part of the driving sliding block 10, which is close to the transformer body 31 to be welded, and the tail end of a welding gun 40 of the laser welder 41 corresponds to a gap 44 to be welded on the transformer body 31 to be welded;
when the active slider 10 is actively displaced to the middle of the guide rail 9, there are the following two cases:
in the first case, as shown in fig. 4, if the linear race 11 tangent to the roller 15 is parallel to the guide rail 9, the extension line 19 of the pressing force F of the roller 15 against the tangent linear race 11 intersects with the central axis 18 of the rotating shaft 14;
in the second case, as shown in fig. 5, if the linear race 11 tangent to the roller 15 is not parallel to the guide rail 9, the extension line 19 of the pressing force F of the roller 15 against the tangent linear race 11 does not intersect with the central axis 18 of the rotating shaft 14; thereby causing the pressing force F to torque the rotating shaft 14;
working principle: step one, the transformer body 31 waiting for welding is assembled on the welding fixture 71, and when the transformer body 31 waiting for welding is assembled on the welding fixture 71: the four column boxes 25 at the lower side of the lower frame 26 of the transformer body 31 to be welded are respectively clamped into the clamping grooves 30 at the upper sides of the four lifting seats 34; the lower surface of the rectangular constraint ring 17 is downwards and parallelly pressed against the upper surface of the upper frame 20 of the transformer body 31 to be welded, and the transformer coil skeleton 22 on the upper side of the transformer body 31 to be welded is upwards clamped into the rectangular bayonet 33; so that the transformer body 31 to be welded is clamped and pressed between each lifting seat 34 and the rectangular constraint ring 17, the transformer body 31 to be welded is pressed down by upper and lower clamps, and any one of four side surfaces of the transformer body 31 to be welded forms a gap 44 to be welded with two overlapped extension lines; the rectangular constraint ring 17, the transformer body 31 to be welded and the rotary platform 4 are synchronously rotated along with the output shaft 3, and the tail end of a welding gun 40 of the laser welder 41 corresponds to a gap 44 to be welded on the transformer body 31 to be welded;
step two, controlling the driving slide block 10 to actively displace to the middle part of the guide rail 9, and then controlling the switching motor 2 to release the braking state of the output shaft 3, so that the output shaft 3 can freely rotate along the axis; so that the transformer body 31 to be welded can rotate freely along the axis of the output shaft 3/rotating shaft 14; at this time, there may be the following two cases:
in the first case, as shown in fig. 4, if the linear race 11 tangent to the roller 15 is parallel to the guide rail 9, the extension line 19 of the pressing force F of the roller 15 against the tangent linear race 11 intersects with the central axis 18 of the rotating shaft 14; the pressing force F does not form torque to the output shaft 3/the rotating shaft 14, so that the transformer body 31 to be welded enters a stable state;
in the second case, as shown in fig. 5, if the linear race 11 tangent to the roller 15 is not parallel to the guide rail 9, the extension line 19 of the pressing force F of the roller 15 against the tangent linear race 11 does not intersect with the central axis 18 of the rotating shaft 14; so that the jacking force F forms torque on the output shaft 3/rotating shaft 14, and then under the action of the torque exerted by the jacking force F, the transformer body 31 to be welded spontaneously rotates along the axis of the output shaft 3/rotating shaft 14 until the extension line 19 of the jacking force F of the roller 15 on the tangent linear roller path 11 intersects with the central axis 18 of the rotating shaft 14, so that the linear roller path 11 tangent with the roller 15 is parallel to the guide rail 9;
whether "first instance" or "second instance"; the linear roller path 11 tangent to the roller 15 is spontaneously parallel to the guide rail 9, so that two gaps 44 to be welded on one side of the transformer body 31 to be welded, which is close to the laser welder 41, are parallel to the guide rail 9; at the moment, the switching motor 2 is controlled to brake the output shaft 3; bringing the transformer body 31 to be welded at this time into a fixed state;
step three, controlling the active sliding block 10 to move along the guide rail 9, wherein in the process of moving the active sliding block 10 along the guide rail 9, the tail end of a welding gun 40 of the laser welder 41 transversely sweeps two gaps 44 to be welded on one side of a transformer body 31 to be welded, which is close to the laser welder 41, and in the process of transversely sweeping the tail end of the welding gun 40 of the laser welder 41 transversely sweeps two gaps 44 to be welded on one side of the laser welder 41, the two gaps 44 to be welded on one side of the laser welder 41 are welded by laser beams emitted by the tail end of the welding gun 40; the welding of the slit 44 to be welded of one of the four sides of the transformer body 31 to be welded has been completed so far;
after the step is completed, the active sliding block 10 is controlled to actively move to the middle part of the guide rail 9;
in the step, in the process that the tail end of the welding gun 40 of the laser welder 41 transversely sweeps through two gaps 44 to be welded close to one side of the laser welder 41, the distance between the tail end of the welding gun 40 and the two gaps 44 to be welded is always in a consistent state, so that the uniformity of laser welding is ensured;
step four, the welding process of the other side face of the transformer body 31 to be welded is as follows: the brake state of the output shaft 3 is relieved, then the release of the switching motor 2 is controlled, in order to avoid using a high-precision motor and reduce the cost, the switching motor 2 of the scheme is not a high-precision motor, but the structure of the scheme can solve the problem that the switching motor 2 is not a high-precision motor, the output shaft 3 cannot realize accurate rotation, so that the forced rotation of the output shaft 3 is controlled to be about 90 degrees, the rotation error is not more than +/-5 degrees, the rectangular constraint ring 17, the transformer body 31 to be welded and the rotating platform 4 are synchronously and forcibly rotated along with the output shaft 3 by about 90 degrees, the other side surface of the transformer body 31 faces the laser welder 41, and meanwhile, the other linear roller way 11 on the rectangular constraint ring 17 is tangent with the roller 15; as can be seen from the structural relation of the scheme, the welding gun 40 automatically follows in the process of forcibly rotating the output shaft 3 by about 90 degrees so as to prevent motion interference; then referring to the processes of the second step and the third step, whether the first condition or the second condition, the linear roller path 11 tangent to the roller 15 is spontaneously parallel to the guide rail 9, and then the welding of the other side surface of the transformer body 31 is completed; referring to the rule of "step four", welding of the to-be-welded slits 44 of the other two sides of the to-be-welded transformer body 31 is completed successively.
After all the gaps 44 to be welded on the four sides of the transformer body 31 to be welded are welded, a complete welded transformer body 31 is formed, and the stacked state maintaining springs 36 in each column box 25 form upward elastic jacking force on the lower end face of the transformer core 23, so that the silicon steel sheets on the transformer core 23 are always in a stacked state;
finally, the telescopic rods 28 are controlled to retract downwards completely, so that the distance between the lifting seats 34 and the rectangular constraint ring 17 is large enough, and the welded transformer body (31) can be taken out smoothly.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (8)
1. Welding system of lamination state of transformer core keeps structure, its characterized in that: including welding frock clamp (71), welding frock clamp (71) include equipment support (1), the bottom fixed mounting of equipment support (1) has vertical switch motor (2) that have the brake function, output shaft (3) upper end fixedly connected with rotary platform (4) of switch motor (2), be provided with riser (27) of four rectangle distributions on rotary platform (4), each equal fixedly connected with lifting seat (34) of telescopic link (28) upper end of riser (27), each lifting seat (34) upside is provided with draw-in groove (30), waits welded four post casees (25) of lower frame (26) downside of transformer body (31) block respectively in draw-in groove (30) of four lifting seat (34) upside.
2. The welding system of the laminated state holding structure of the transformer core according to claim 1, wherein: a horizontal rectangular constraint ring (17) is arranged above the rotary platform (4), the inner ring of the rectangular constraint ring (17) is a rectangular bayonet (33), a rotary arm (32) is fixed at the upper end of the rectangular bayonet (33) of the rectangular constraint ring (17), an upward rotary shaft (14) is fixed in the middle of the rotary arm (32), a fixed beam (16) is fixedly arranged at the top of the equipment support (1), a bearing hole (13) at the axis of the fixed beam (16) is in running fit with the rotary shaft (14) through a bearing, and the rotary shaft (14) is coaxial with the output shaft (3); the lower surface of the rectangular constraint ring (17) is downwards and parallelly pressed against the upper surface of the upper frame (20) of the transformer body (31) to be welded, and the transformer coil framework (22) on the upper side of the transformer body (31) to be welded is upwards clamped into the rectangular bayonet (33).
3. The welding system of the laminated state holding structure of the transformer core according to claim 2, wherein: the transformer body (31) to be welded is clamped between each lifting seat (34) and the rectangular constraint ring (17), the transformer body (31) to be welded is pressed by upper and lower clamps, and any one of four side surfaces of the transformer body (31) to be welded forms a gap (44) to be welded with two overlapped extension lines; and the rectangular constraint ring (17), the transformer body (31) to be welded and the rotary platform (4) synchronously rotate along with the output shaft (3).
4. A welding system for a laminated state holding structure of a transformer core according to claim 3, wherein: one side of the rectangular constraint ring (17) is provided with a horizontal guide rail (9), two ends of the guide rail (9) are fixedly connected with a driven sliding block (7), the rectangular constraint ring further comprises two pairs of fixed sliding rods (8) which are horizontal and perpendicular to the guide rail (9), one end of each fixed sliding rod (8) is fixed on the equipment bracket (1), and the other end of each fixed sliding rod is fixedly connected with a spring baffle disc (5); the fixed slide bar (8) slides through a slide hole on the driven slide bar (7), so that the driven slide bars (7) at two ends of the guide rail (9) slide along the fixed slide bar (8), and the guide rail (9) is provided with a driving slide block (10) capable of actively displacing along the direction of the guide rail (9); a laser welder (41) is arranged at one side of the lower part of the driving sliding block (10) close to the transformer body (31) to be welded, and the tail end of a welding gun (40) of the laser welder (41) corresponds to a gap (44) to be welded on the transformer body (31) to be welded.
5. The welding system of the laminated state holding structure of the transformer core according to claim 4, wherein: a roller (15) with a vertical axis is rotatably arranged on one side, close to the rectangular constraint ring (17), of the driving sliding block (10) through a roller bracket (12); the outer ring of the rectangular constraint ring (17) is provided with four linear rollways (11), the joint of two adjacent linear rollways (11) is a smooth fillet transition (11.1), and the roller (15) is tangent with one linear rollway (11).
6. The welding system of the laminated state holding structure of the transformer core according to claim 5, wherein: one side of each fixed sliding rod (8) close to the spring baffle disc (5) is sleeved with a spring (6), each spring (6) forms elastic thrust to the driven sliding block (7), and under force transmission, a jacking force F is formed between the idler wheel (15) and the tangent linear rollaway nest (11).
7. The welding system of the laminated state holding structure of the transformer core according to claim 6, wherein: when the driving sliding block (10) actively moves to the middle part of the guide rail (9), the following two conditions exist:
in the first case, as shown in fig. 4, if the linear race (11) tangential to the roller (15) is parallel to the guide rail (9), the extension line (19) of the pressing force F of the roller (15) against the tangential linear race (11) intersects with the central axis (18) of the rotating shaft (14);
in the second case, as shown in fig. 5, if the linear race (11) tangential to the roller (15) is not parallel to the guide rail (9), the extension line (19) of the pressing force F of the roller (15) against the tangential linear race (11) does not intersect with the central axis (18) of the rotating shaft (14); so that the pressing force F forms a torque on the rotating shaft (14).
8. The welding method of the welding system of the laminated state holding structure of the transformer core according to claim 7, characterized in that:
step one, a transformer body (31) waiting for welding is assembled on a welding fixture (71);
step two, controlling the driving sliding block (10) to actively move to the middle part of the guide rail (9), wherein a linear rollaway nest (11) tangent to the roller (15) is spontaneously parallel to the guide rail (9) and brakes the output shaft (3);
and thirdly, controlling the active sliding block (10) to move along the guide rail (9) so that the tail end of a welding gun (40) of the laser welder (41) transversely sweeps across two gaps (44) to be welded on one side of the transformer body (31) to be welded, which is close to the laser welder (41), and welding the two gaps (44) to be welded on one side, which is close to the laser welder (41), by laser beams emitted by the tail end of the welding gun (40).
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| CN202310615173.3A CN116551182B (en) | 2023-05-29 | 2023-05-29 | Welding system and welding method for laminated state retaining structure of transformer core |
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| CN202310615173.3A CN116551182B (en) | 2023-05-29 | 2023-05-29 | Welding system and welding method for laminated state retaining structure of transformer core |
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| CN116551182B CN116551182B (en) | 2024-03-26 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207057904U (en) * | 2017-06-09 | 2018-03-02 | 南通科赛尔机械有限公司 | A kind of welding tooling |
| CN113851316A (en) * | 2021-08-31 | 2021-12-28 | 陆林娣 | Iron core cladding system of transformer and working method |
| CN215966876U (en) * | 2021-09-17 | 2022-03-08 | 南京开关厂有限公司 | Laser welding tool platform |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207057904U (en) * | 2017-06-09 | 2018-03-02 | 南通科赛尔机械有限公司 | A kind of welding tooling |
| CN113851316A (en) * | 2021-08-31 | 2021-12-28 | 陆林娣 | Iron core cladding system of transformer and working method |
| CN215966876U (en) * | 2021-09-17 | 2022-03-08 | 南京开关厂有限公司 | Laser welding tool platform |
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