Laser welding device for electric water heater components

Abstract

The present invention relates to the technical field of electric water heater processing, and in particular to a laser welding device for an electric water heater component, comprising a connecting seat for being fixedly connected to a base of a welding robot arm, a locking mechanism 1 for locking a mounting disc of the electric water heater is provided at the front end of the connecting seat, a locking mechanism 2 for locking a plurality of heating U-tubes of the electric water heater is provided at a position corresponding to the mounting disc on the lower side of the connecting seat, the locking mechanism 1 and the locking mechanism 2 are fixedly connected to each other through a plurality of electric push rods 2, and the locking mechanism 1 and the locking mechanism 2 adopted in the present invention are used in combination to automatically complete the docking, positioning and locking of the mounting disc of the electric water heater and the heating U-tube, effectively ensure the welding stability of the mounting disc of the electric water heater and the heating U-tube, further ensure the welding quality of the mounting disc of the electric water heater and the heating U-tube, and are convenient to use, saving time and effort.

Description

Technical Field

[0001] The invention relates to the technical field of electric water heater processing, and in particular to a laser welding device for an electric water heater component. Background Art

[0002] An electric water heater is a device that provides hot water through electric heating. It is widely used in home, commercial and industrial environments to provide hot water for bathing, washing dishes, laundry, etc. Electric water heaters are composed of multiple components, generally including an external box, circuit components and heating components.

[0003] Heating components generally use multiple heating U-tubes to work together. Each heating U-tube is filled with a heating element, usually a resistance wire. When current passes through these resistance wires, the resistance wires will heat up and then transfer the heat to the surrounding water. The design of the U-tube allows water to flow through both sides of the tube to ensure that the heat is fully absorbed. There are many types of heating U-tube distributions, and the most common one is a vertical cross-distribution structure. In order to maintain this distribution state, multiple heating U-tubes need to be welded to the mounting disc. The mounting disc will have a mounting hole reserved in advance for the heating U-tube end to pass through. After docking, the heating U-tube is welded to the mounting disc by a welding device.

[0004] For the welding of the heating U-tube and the mounting disc, there are relatively advanced technologies for welding. This type of technology uses a laser welding robot arm to perform all-round welding after the heating U-tube and the mounting disc are connected. Overall, there are certain technical advantages, but they are slightly insufficient in terms of welding stability. The existing technology only locks the mounting disc, and the heating U-tube is not locked. The connection between the mounting disc and the heating U-tube is maintained by the friction force after the connection. On the one hand, the connection between the mounting disc and the heating U-tube will fall off due to the mechanical vibration in the processing link, and a secondary connection is required. On the other hand, the manual installation of the heating U-tube cannot guarantee the verticality and will have a certain inclination, which is not conducive to later installation. Summary of the invention

[0005] Technical problem to be solved: The present invention provides a laser welding device for electric water heater components, which can solve the above-mentioned problems.

[0006] Technical solution: In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a laser welding device for an electric water heater assembly, comprising a connecting seat fixedly connected to the base of a welding robot arm, a locking mechanism 1 for locking the mounting disc of the electric water heater is provided at the front end of the connecting seat, a locking mechanism 2 for locking multiple heating U-tubes of the electric water heater is provided at the position corresponding to the mounting disc on the lower side of the connecting seat, and the locking mechanism 1 and the locking mechanism 2 are fixedly connected by a plurality of electric push rods 2.

[0007] The locking mechanism includes a mounting ring fixedly connected to the front end of the connecting seat. The interior of the mounting ring is hollow and a plurality of retaining seats are equidistantly arranged on the inner circumference of the ring. The inside and outside of the mounting ring are jointly provided with a synchronous adjustment component for synchronously controlling the radial movement of each retaining seat along the mounting ring. The lower side of the connecting seat is provided with a leveling component for covering the inner hole of the mounting ring.

[0008] The second locking mechanism includes a ring seat fixedly connected to the lower end of each electric push rod. The ring seat is divided into two layers, an upper layer and an lower layer, with a gap between the two layers. Two groups of stoppers are symmetrically arranged inside the ring seats of the upper and lower layers. The two groups of stoppers of the upper and lower layers are vertically distributed. The two groups of stoppers are composed of two groups of symmetrically distributed stoppers. Each group of two stoppers is provided with a joint control component for controlling the two stoppers of the same group to move closer or farther away from each other. Each joint control component is provided with a linkage component for controlling their synchronous operation.

[0009] The locking mechanism 1 and the locking mechanism 2 are used in coordination to achieve automatic positioning and locking of the mounting disc of the electric water heater and the heating U-tube during welding.

[0010] As a preferred technical solution of the present invention, the synchronous adjustment component includes a plurality of telescopic rods corresponding to each stop seat, which slide through the inner ring wall of the mounting ring. One end of the telescopic rod is fixedly connected to a connecting pin inside the mounting ring. A swivel is rotatably connected to the inside of the mounting ring. A curved groove is provided on the swivel corresponding to the connecting pin. The curved groove and the connecting pin are slidably matched. A gear ring segment is fixedly provided on the outer edge of the swivel. A driving gear is meshingly connected on the gear ring segment. The driving gear is rotatably connected between the upper and lower walls of the mounting ring through a rotating rod. The upper end of the rotating rod of the driving gear extends to the outside of the mounting ring and is fixedly connected to the output end of a motor. The motor is fixedly connected to the outside of the mounting ring.

[0011] As a preferred technical solution of the present invention, the leveling component includes an electric push rod 1 fixedly connected to the lower side of the rear end of the connecting seat, the output end of the electric push rod 1 faces the front and is fixedly connected to a movable plate, and the movable plate is provided with a movable opening at the position corresponding to the rear electric push rod 2.

[0012] The two gears are connected with each other through the gear chain, and the two gears are meshed with a sector gear, and the two sector gears are respectively connected with the two support walls of the U frame through corresponding rotation pins, and a sliding groove is provided on the moving bar, and the front end of the U frame slides through the sliding groove, and the rotation pin of the sector gear is also fixedly connected with a short rod symmetrically distributed with the sector gear about the axis of the rotation pin, and the short rod is hinged with a connecting arm at one end away from the connected sector gear, and the two connecting arms are hinged together on the same telescopic rod two, and the telescopic rod two slides through the center of the U frame, and the upper end of the U frame on one side away from the central axis of the ring seat is fixedly connected with a connecting plate, and the connecting plate is fixedly connected to the ring seat, and the end of the telescopic rod two located at the lower side of the connecting plate is fixedly connected with a rack rack, and the rack rack is L-shaped, and the rack segment of the rack rack is meshed with a driving gear, and the driving gear is rotatably connected to the lower side of the connecting plate through a rotating rod.

[0013] As a preferred technical solution of the present invention, the linkage assembly includes a rotating ring two which is rotatably connected to the lower ends of the upper and lower ring seats respectively, and the peripheries of the upper and lower side rotating rings two are fixedly connected with gear ring segments three respectively, and the upper and lower side gear ring segments three are meshingly connected with driving gears two, and the two driving gears two are commonly fixedly connected to a connecting rod, and the connecting rod is fixedly connected to the output end of motor two, and motor two is fixedly connected to the upper ring seat, and the inner walls of the upper and lower side rotating rings two are respectively fixedly provided with connecting plates corresponding to the connection, and each gear ring segment two is meshingly connected with a linkage gear, and each linkage gear is fixedly connected to each rotating rod one by one.

[0014] As a preferred technical solution of the present invention, the edges of the upper and lower ring seats are fixedly connected with a plurality of connecting ears, and a connecting rod is fixedly connected between two corresponding connecting ears.

[0015] As a preferred technical solution of the present invention, a through hole for the rack rack to pass through is opened at the position of the ring wall of the ring seat corresponding to the rack rack.

[0016] Beneficial effects:

[0017] 1. The locking mechanism 1 adopted in the present invention can automatically complete the stable locking of the electric water heater mounting disc, effectively ensure the welding stability of the electric water heater mounting disc, and ensure the welding quality.

[0018] 2. The second locking mechanism adopted in the present invention can independently lock multiple stacked heating U-tubes on the same electric water heater. The locking adopts automatic synchronous control and is easy to use. The locking can ensure the verticality of the distribution of the heating U-tubes and avoid the problem of skewing of the heating U-tubes, resulting in a larger actual contour range and difficulty in installation.

[0019] 3. The locking mechanism 1 and the locking mechanism 2 adopted in the present invention are used in combination to automatically complete the docking, positioning and locking of the electric water heater mounting disc and the heating U-tube, effectively ensuring the welding stability of the electric water heater mounting disc and the heating U-tube, and further ensuring the welding quality of the electric water heater mounting disc and the heating U-tube. It is easy to use and saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure from the first viewing angle of the present invention.

[0022] Figure 2 It is a bottom-up stereoscopic structural schematic diagram of the locking mechanism 1 of the present invention.

[0023] Figure 3 It is a schematic diagram of the internal cross-sectional structure of the mounting ring of the present invention.

[0024] Figure 4 It is a schematic diagram of the top view of the locking mechanism 1 of the present invention.

[0025] Figure 5 It is a three-dimensional structural schematic diagram of the locking mechanism 2 of the present invention.

[0026] Figure 6 It is a bottom view structural schematic diagram of the locking mechanism 2 of the present invention.

[0027] Figure 7 It is a schematic diagram of the internal connection structure of the single-layer ring seat of the present invention.

[0028] In the figure: 1, connecting seat; 2, locking mechanism 1; 21, mounting ring; 22, seat 1; 23, synchronous adjustment component; 231, rotating ring 1; 232, curved groove; 233, connecting pin; 234, telescopic rod 1; 235, gear ring segment 1; 236, driving gear 1; 237, motor 1; 24, leveling component; 241, movable plate; 242, electric push rod 1; 3, electric push rod 2; 4, locking mechanism 2; 41, linkage component; 411, motor 2; 412, connecting rod; 413, driving gear Wheel 2; 414, gear ring segment 2; 415, rotating rod; 416, linkage gear; 417, swivel 2; 418, gear ring segment 3; 42, stop seat 2; 421, joint control component; 4211, sector gear; 4212, rack; 4213, connecting plate; 4214, telescopic rod 2; 4215, U frame; 4216, connecting arm; 4217, moving bar; 4218, driving gear; 4219, rack frame; 43, ring seat; 431, connecting ear; 432, connecting rod; 433, through-hole. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0030] See also Figure 1 A laser welding device for an electric water heater assembly includes a connecting seat 1 for being fixedly connected to a base of a welding robot arm (the welding robot arm is not shown in the figure), a locking mechanism 2 for locking a mounting disc of the electric water heater is provided at the front end of the connecting seat 1, a locking mechanism 2 for locking a plurality of heating U-tubes of the electric water heater is provided at a position corresponding to the mounting disc on the lower side of the connecting seat 1, and the locking mechanism 2 4 for locking a plurality of heating U-tubes of the electric water heater is fixedly connected to the locking mechanism 2 by a plurality of electric push rods 2 3.

[0031] See also Figure 1 , Figure 2 and Figure 3 The locking mechanism 2 includes a mounting ring 21 fixedly connected to the front end of the connecting seat 1. The mounting ring 21 is hollow inside and has a plurality of retaining seats 22 equidistantly arranged on the inner circumference of the ring. The mounting ring 21 has a synchronous adjustment component 23 inside and outside thereof for synchronously controlling the radial movement of each retaining seat 22 along the mounting ring 21. The lower side of the connecting seat 1 is provided with a leveling component 24 for shielding the inner hole of the mounting ring 21.

[0032] During specific operation, the electric push rod 23 is used to extend and retract to control the installation disc and the heating U-tube to connect up and down.

[0033] See also Figure 1 and Figure 5 The locking mechanism 24 includes a ring seat 43 which is fixedly connected to the lower end of each electric push rod 23. The ring seat 43 is divided into two layers, with a gap between the two layers. The inner parts of the ring seats 43 of the upper and lower layers are symmetrically provided with two groups of retaining seats 42. The groups of retaining seats 42 of the upper and lower layers are vertically distributed. The groups of retaining seats 42 are composed of two groups of symmetrically distributed retaining seats 42. Each group of retaining seats 42 is provided with a joint control component 421 for controlling the two retaining seats 42 of the same group to approach or move away from each other. Each joint control component 421 is provided with a linkage component 41 for controlling the synchronous operation thereof.

[0034] In specific operation, the double-layer ring seat 43 can stagger the contact positions of the two vertically distributed heating U-tubes to avoid the problem of mutual interference of the locking structures caused by the two heating U-tubes being arranged closely.

[0035] By using the locking mechanism 1 2 and the locking mechanism 2 4 in cooperation, automatic positioning and locking can be achieved when welding the mounting disc of the electric water heater and the heating U-tube.

[0036] See also Figure 3 and Figure 4The synchronous adjustment component 23 includes a plurality of telescopic rods 234 corresponding to each stop 22 and sliding through the inner ring wall of the mounting ring 21. One end of the telescopic rod 234 located inside the mounting ring 21 is fixedly connected with a connecting pin 233. A swivel 231 is rotatably connected inside the mounting ring 21. A curved groove 232 is provided on the swivel 231 corresponding to the connecting pin 233. The curved groove 232 slidably cooperates with the connecting pin 233. A gear ring segment 235 is fixedly provided on the outer edge of the swivel 231. A driving gear 236 is meshedly connected to the gear ring segment 235. The driving gear 236 is rotatably connected between the upper and lower walls of the mounting ring 21 through a rotating rod. The upper end of the rotating rod of the driving gear 236 extends to the outside of the mounting ring 21 and is fixedly connected to the output end of a motor 237. The motor 237 is fixedly connected to the outside of the mounting ring 21.

[0037] During specific operation, the motor 237 controls the rotation of the driving gear 236, which controls the gear ring segment 235 to drive the rotating ring 231 to rotate, and the curved grooves 232 of the rotating ring 231 control the connecting pins 233 to drive the telescopic rods 234 to telescope, and the telescopic rods 234 telescope to control the support seat 22 to lock the mounting disc.

[0038] See also Figure 2 The leveling component 24 includes an electric push rod 242 fixedly connected to the lower side of the rear end of the connecting seat 1, the output end of the electric push rod 242 faces the front side and is fixedly connected to a movable plate 241, and the movable plate 241 has a movable opening corresponding to the position of the rear electric push rod 2 3.

[0039] During specific operation, the movable plate 241 is controlled by the electric push rod 1 242 to cover the central hole of the mounting ring 21. After pre-tightening each heating tube, when the heating U tube docks with the mounting disc and moves upward, the upper end of each heating U tube first contacts the movable plate 241, and the movable plate 241 restricts the heating U tube to stop moving after contact, and the heating U tube that is not in contact continues to move upward until the upper ends of all the heating U tubes are aligned, and then the movable plate 241 is retracted to the rear side of the connecting seat 1, and a movable opening is set to prevent the rear electric push rod 2 3 from interfering with the movement of the movable plate 241.

[0040] See also Figure 5 , Figure 6 and Figure 7The joint control component 421 includes a moving bar 4217 fixedly connected to one end of the two abutments 42 of the same group away from the central axis of the ring seat 43. A rack 4212 is fixedly arranged on the side of the two moving bars 4217 away from the central axis of the ring seat 43. The two racks 4212 are meshedly connected with a sector gear 4211. The two sector gears 4211 are respectively connected to the two supporting walls of the U frame 4215 through corresponding rotation pins. A slide groove is provided on the moving bar 4217. The front end of the U frame 4215 slides through the slide groove. The rotation pin of the sector gear 4211 is also fixedly connected with a short rod symmetrically distributed with the sector gear 4211 about the axis of the rotation pin. The short rod is away from the connected sector gears. One end of the wheel 4211 is hinged with a connecting arm 4216, and the two connecting arms 4216 are hinged on the same telescopic rod 4214. The telescopic rod 4214 slides through the center of the U frame 4215. The upper end of the U frame 4215 on the side away from the central axis of the ring seat 43 is fixedly connected with a connecting plate 4213, and the connecting plate 4213 is fixedly connected to the ring seat 43. The end of the telescopic rod 4214 located on the lower side of the connecting plate 4213 is fixedly connected with a rack frame 4219. The rack frame 4219 is L-shaped, and the rack segment of the rack frame 4219 is meshedly connected with a driving gear 4218. The driving gear 4218 is rotatably connected to the lower side of the connecting plate 4213 through the rotating rod 415.

[0041] See also Figure 1 , Figure 5 and Figure 7 The linkage assembly 41 includes a rotating ring 417 which is rotatably connected to the lower ends of the upper and lower ring seats 43 respectively, and the peripheries of the upper and lower side rotating rings 417 are fixedly connected with gear ring segments 418 respectively, and the upper and lower side gear ring segments 418 are meshed with driving gears 413. The two driving gears 413 are commonly fixedly connected to the connecting rod 412, and the connecting rod 412 is fixedly connected to the output end of the motor 411. The motor 411 is fixedly connected to the upper ring seat 43. The inner walls of the upper and lower side rotating rings 417 are respectively connected to the connecting plates 4213 which are fixed with gear ring segments 414, and each gear ring segment 414 is meshed with a linkage gear 416, and each linkage gear 416 is fixedly connected to each rotating rod 415 one by one.

[0042] During specific operation, the motor 2 411 controls the connecting rod 412 to drive the two-drive rotating gear 2 413 to rotate, and the two-drive rotating gear 2 413 synchronously drives the upper and lower rotating rings 2 417 to rotate, and the gear ring segment 2 414 of the rotating ring 2 417 controls the synchronous rotation of each linkage gear 416, and the linkage gear 416 drives each rotating rod 415 to rotate synchronously to control the driving gear 4218 to drive the rack frame 4219 to move, and each rack frame 4219 synchronously drives each telescopic rod 234 to move and control the connecting arm 4216 to drive the connected fan gear 4211 to rotate, and the fan gear 4211 controls the moving bar 4217 to move on the U frame 4215 through the rack 4212, and the moving bar 4217 controls the abutment 2 42 to press and lock the heating U tube.

[0043] See also Figure 5 and Figure 7 The edges of the upper and lower ring seats 43 are fixedly connected with a plurality of connecting ears 431, and a connecting rod 432 is fixedly connected between the two corresponding connecting ears 431. The upper and lower ring seats 43 are fixedly connected by the connecting ears 431 and the connecting rod 432, so that the upper and lower ring seats 43 are an integrated structure, which can realize the synchronous movement of the upper and lower ring seats 43, and facilitate the synchronous movement of the two vertically distributed heating U-tubes.

[0044] See also Figure 7 The ring wall of the ring seat 43 is provided with a through hole 433 for the rack rack 4219 to pass through at a position corresponding to the rack rack 4219. The through hole 433 can prevent the rack rack 4219 from interfering with the wall of the ring seat 43.

[0045] When in use: S1: first, place the electric water heater mounting disc into the mounting ring 21 according to the distribution of the heating U-tube mounting holes, and then control the rotation of the driving gear 236 through the motor 237, and the driving gear 236 controls the gear ring segment 235 to drive the rotating ring 231 to rotate, and the curved grooves 232 of the rotating ring 231 control the connecting pins 233 to drive the telescopic rods 234 to telescope, and the telescopic rods 234 are telescopically controlled to press the mounting disc against the support seat 22 to lock it.

[0046] S2: Then, multiple heating U-tubes are placed into each group of the second support seat 42 from the inside to the outside according to the internal and external distribution characteristics, and the connecting rod 412 is controlled by the second motor 411 to drive the two-drive rotating gear 413 to rotate, and the two-drive rotating gear 413 synchronously drives the upper and lower rotating rings 417 to rotate, and the gear ring segment 414 of the rotating ring 417 controls the synchronous rotation of each linkage gear 416, and the linkage gear 416 drives each rotating rod 415 to rotate synchronously to control the driving gear 4218 to drive the rack frame 4219 to move, and each rack frame 4219 synchronously drives each telescopic rod 234 to move and control the connecting arm 4216 to drive the connected fan gear 4211 to rotate, and the fan gear 4211 controls the moving bar 4217 to move on the U frame 4215 through the rack 4212, and the moving bar 4217 controls the second support seat 42 to pre-tighten the heating U-tube.

[0047] S3: Then, the electric push rod 243 is telescopically moved to control the installation disc and the heating U-tube to dock up and down. When docking, the movable plate 241 is first controlled by the electric push rod 1 242 to cover the central hole of the installation ring 21. Then, when the heating U-tube docks with the installation disc and moves upward, the upper end of each heating U-tube first contacts the movable plate 241, and the movable plate 241 restricts the contacted heating U-tube to stop moving. The heating U-tubes that are not in contact continue to move upward until the upper ends of all the heating U-tubes are aligned, and then the movable plate 241 is retracted to the rear side of the connecting seat 1, and then the docking movement is continued until the installation disc and the heating U-tubes are docked. After the docking is completed, the locking mechanism 244 is used to tightly lock the heating U-tubes, and then the welding robot arm is used to weld the docking position of the installation disc and the heating U-tubes.

[0048] S4: After the welding is completed, the connected mounting disc and the heating U-tube are taken out by loosening the first and second dowel seats 22 and 42 .

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A laser welding device for an electric water heater assembly, comprising a connection base (1) for being fixedly connected to a base of a welding robot arm, characterized in that: A locking mechanism 1 (2) for locking the mounting disc of the electric water heater is provided at the front end of the connecting seat (1); a locking mechanism 2 (4) for locking the plurality of heating U-tubes of the electric water heater is provided at a position corresponding to the mounting disc on the lower side of the connecting seat (1); the locking mechanism 1 (2) and the locking mechanism 2 (4) are fixedly connected via a plurality of electric push rods 2 (3); The locking mechanism (2) comprises a mounting ring (21) fixedly connected to the front end of the connecting seat (1); the mounting ring (21) is hollow inside and has a plurality of retaining seats (22) movably arranged at equal intervals on the inner circumference of the ring; a synchronous adjustment component (23) for synchronously controlling the radial movement of each retaining seat (22) along the mounting ring (21) is provided inside and outside the mounting ring (21); and a leveling component (24) for shielding the inner hole of the mounting ring (21) is provided on the lower side of the connecting seat (1); The locking mechanism 2 (4) comprises a ring seat (43) fixedly connected to the lower end of each electric push rod 2 (3), the ring seat (43) is divided into two layers, an upper layer and an lower layer, a gap is left between the two layers, and two groups of stoppers (42) are centrally symmetrically arranged inside the ring seats (43) of the upper and lower layers, the two groups of stoppers (42) of the upper and lower layers are vertically distributed, and the two groups of stoppers (42) are composed of two groups of symmetrically distributed stoppers (42), each group of two stoppers (42) is provided with a joint control component (421) for controlling the two stoppers (42) of the same group to move closer to or farther from each other, and each joint control component (421) is provided with a linkage component (41) for controlling the synchronous operation thereof; The locking mechanism 1 (2) and the locking mechanism 2 (4) are used in conjunction with each other to achieve automatic positioning and locking of the mounting disc and the heating U-tube of the electric water heater during welding; The leveling component (24) comprises an electric push rod 1 (242) fixedly connected to the lower side of the rear end of the connecting seat (1); the output end of the electric push rod 1 (242) faces the front side and is fixedly connected to a movable plate (241); the movable plate (241) is provided with a movable opening at a position corresponding to the rear electric push rod 2 (3); The joint control component (421) comprises a moving bar (4217) fixedly connected to one end of the two support seats (42) of the same group away from the central axis of the ring seat (43); a gear rail (4212) is fixedly provided on the side of the two moving bars (4217) away from the central axis of the ring seat (43); the two gear rails (4212) are meshingly connected with a sector gear (4211); the two sector gears (4211) are respectively connected to the inside of the two supporting walls of the U frame (4215) by corresponding rotation pins; a slide groove is provided on the moving bar (4217); the front end of the U frame (4215) slides through the slide groove; the rotation pin of the sector gear (4211) is also fixedly connected to a short rod centrally symmetrically distributed with the sector gear (4211) about the rotation pin axis; the short rod is away from the connected sector gear (4211) ) is hingedly connected to a connecting arm (4216) at one end, and the two connecting arms (4216) are hingedly connected to the same telescopic rod 2 (4214). The telescopic rod 2 (4214) slides through the center of the U frame (4215). The upper end of the U frame (4215) on the side away from the central axis of the ring seat (43) is fixedly connected to a connecting plate (4213). The connecting plate (4213) is fixedly connected to the ring seat (43). The end of the telescopic rod 2 (4214) located on the lower side of the connecting plate (4213) is fixedly connected to a rack frame (4219). The rack frame (4219) is L-shaped. The rack segment of the rack frame (4219) is meshedly connected to a driving gear (4218). The driving gear (4218) is rotatably connected to the lower side of the connecting plate (4213) through a rotating rod (415).

2. The laser welding device for electric water heater components according to claim 1, characterized in that: The synchronous adjustment assembly (23) comprises a plurality of telescopic rods (234) corresponding to each stop seat (22) and slidingly passing through the inner ring wall of the mounting ring (21); one end of the telescopic rod (234) located inside the mounting ring (21) is fixedly connected to a connecting pin (233); a rotating ring (231) is rotatably connected inside the mounting ring (21); curved grooves (232) are formed on the rotating ring (231) corresponding to the connecting pins (233); the curved grooves (232) and the connecting pins (233) are connected to each other. A gear ring segment 1 (235) is fixedly provided on the outer edge of the rotating ring 1 (231) in a sliding manner, and a driving gear 1 (236) is meshingly connected to the gear ring segment 1 (235). The driving gear 1 (236) is rotatably connected between the upper and lower walls of the mounting ring (21) through a rotating rod. The upper end of the rotating rod of the driving gear 1 (236) extends to the outside of the mounting ring (21) and is fixedly connected to the output end of a motor 1 (237). The motor 1 (237) is fixedly connected to the outside of the mounting ring (21).

3. The laser welding device for electric water heater components according to claim 1, characterized in that: The linkage assembly (41) comprises a rotating ring (417) which is rotatably connected to the lower ends of the upper and lower ring seats (43), respectively; a gear ring segment (418) is fixedly connected to the periphery of the upper and lower rotating rings (417) respectively; a driving gear (413) is meshedly connected to the upper and lower gear ring segments (418); the two driving gears (413) are fixedly connected to a connecting rod (412); the connecting rod (412) is fixedly connected to the output end of a motor (411); the motor (411) is fixedly connected to the upper ring seat (43); a connecting plate (4213) which is connected to the inner wall of the upper and lower rotating rings (417) respectively is fixedly provided with a gear ring segment (414); each gear ring segment (414) is meshedly connected to a linkage gear (416); each linkage gear (416) is fixedly connected to each rotating rod (415) in a one-to-one correspondence.

4. The laser welding device for electric water heater components according to claim 1, characterized in that: A plurality of connection ears (431) are fixedly connected to the edges of the upper and lower ring seats (43), and a connection rod (432) is fixedly connected between two corresponding connection ears (431) distributed above and below.

5. The laser welding device for electric water heater components according to claim 1, characterized in that: A through opening (433) for the rack rack (4219) to pass through is provided on the ring wall of the ring seat (43) at a position corresponding to the rack rack (4219).

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