Remanufacturing welding device for metal sheet welding part and welding method of remanufacturing welding device
By pre-fixing and precise positioning of the metal thin plate and adjustment of the laser welding joint, the problem of poor weld molding caused by plate displacement during welding is solved, and high-precision and stable welding effect is achieved.
Patent Information
- Application Number
- CN202510740102.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-05
- Publication Date
- 2025-07-08
AI Technical Summary
During the gap welding of metal thin plates, the plate is prone to displacement due to thermal stress and external forces, resulting in poor weld molding.
A metal thin plate welding device is adopted to achieve pre-fixation, polishing and precise positioning of the thin plate through components such as fixing frame, positioning sleeve, fastening nut, fastening pressure plate, longitudinal adjustment frame, synchronization groove, synchronization rod, ceramic limit plate, etc., and combined with the adjustment of laser welding joints, the stability and accuracy of the plate during welding are ensured.
It effectively avoids the deviation of the plate during welding, improves welding accuracy and stability, and ensures the molding quality and overall strength of the weld.
Smart Images
Figure CN120269151A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of metal sheet welding, and specifically provides a remanufacturing welding device and a welding method for metal sheet welded parts. Background Art
[0002] In various industries involving metal sheet processing, such as electronic device manufacturing, automotive parts production, and precision instrument manufacturing, the welding process of metal sheets is crucial. Especially seam welding plays a key role in achieving reliable connection between thin sheets and ensuring the overall performance of products.
[0003] In this regard, the patent of CN119035765A discloses a double - head laser synchronous welding device and a welding method, which relates to the technical field of welding equipment. The synchronous welding device includes a guide rail, a bracket, and a first welding unit and a second welding unit arranged at both ends of the bracket. The bracket is connected to the guide rail and can move along the guide rail. The first welding unit includes a first laser welding head, and the second welding unit includes a second laser welding head. The laser emission parts of the first laser welding head and the second laser welding head are arranged opposite to each other, and a welding position is formed at the gap position between the two laser emission parts. Since the synchronous welding device is provided with two opposite welding units, it can simultaneously perform synchronous welding on the upper and lower or left and right two seams on the fitting side between the metal plate and the edge - wrapped plate, avoiding the problem that the connection between the metal plate and the edge - wrapped plate is not firm during the process of welding the two seams one by one by flipping the metal plate, resulting in the dislocation of the second weld seam, and effectively improving the welding efficiency and weld quality.
[0004] However, during the current seam welding process of metal sheets, there are many problems to be solved urgently. In terms of plate fixation, due to the thermal stress generated during the welding process and the external force, the plate is prone to displacement. A slight displacement of the plate will cause the deviation of the weld seam, resulting in poor weld formation.
[0005] In view of the above problems, a remanufacturing welding device and a welding method for metal sheet welded parts are proposed. Summary of the Invention
[0006] The purpose of the present invention is to provide a remanufacturing welding device and a welding method for metal sheet welded parts, which solve the problem of poor weld formation in the background art during welding.
[0007] To achieve the above purpose, the present invention provides the following technical solution: A remanufacturing welding device for metal sheet welded parts, including a fixed frame; The upper surface of the fixing frame is provided with a slide rail, inside which a positioning sleeve is embedded. A fastening nut is arranged at the top end of the positioning sleeve. A thin sheet to be welded is inserted into the positioning sleeve. A fastening pressure plate is connected inside the positioning sleeve, and the fastening pressure plate is used to fix the thin sheet to be welded. The top end of the fixing frame is also fixedly connected with a welding frame. Inside the welding frame, a longitudinal adjusting frame is embedded. Inside the longitudinal adjusting frame, a stabilizing component is embedded. The stabilizing component includes a welding table which is embedded in the inner wall of the longitudinal adjusting frame. A laser welding head is installed inside the welding table, and the laser welding head is used to weld the metal thin sheet. A synchronous groove is formed on one side surface of the welding table. A synchronous rod is connected inside the synchronous groove. The bottom end of the synchronous rod is connected with an upper pressing strip. One side surface of the upper pressing strip is connected with a ceramic limiting piece. There are two groups of the upper pressing strip and the ceramic limiting piece, and directly above the two groups of ceramic limiting pieces is the laser welding head.
[0008] Preferably, the slide rail and the positioning sleeve are slidably connected. There are two groups of the positioning sleeves, and the two groups of positioning sleeves are respectively used to fix two metal thin sheets to be welded.
[0009] Preferably, the fastening pressure plate penetrates through the outer wall of the positioning sleeve and is embedded into the positioning sleeve. The positioning sleeve and the fastening pressure plate are rotatably connected, and the fastening nut is sleeved on the outer surface of the fastening pressure plate.
[0010] Preferably, the synchronous rod is embedded inside the synchronous groove. A support column is fixedly connected to one side of the welding table. A double-headed telescopic rod is embedded inside the support column, and both ends of the double-headed telescopic rod are fixedly connected with the synchronous rod.
[0011] Preferably, when the double-headed telescopic rod expands or contracts, it drives the synchronous rod to horizontally slide inside the synchronous groove, and the movement of the synchronous rod drives the separation and fitting between the two groups of ceramic limiting pieces.
[0012] Preferably, a linkage rod is fixedly connected to the bottom end of the positioning sleeve. The two groups of positioning sleeves are connected through the linkage rod. A transmission screw rod is embedded inside the linkage rod, and one end of the transmission screw rod is connected with a driving rotation. The driving device drives the transmission screw rod to rotate.
[0013] Preferably, a cutting surface treatment piece is arranged on the side surface of the upper pressing strip close to the thin sheet to be welded. A welding groove is formed on the ceramic limiting piece, and the welding groove is directly below the laser welding head.
[0014] Preferably, a positioning hole is formed at the position of the upper pressing strip directly below the laser welding head, and the upper pressing strip is used to support the top surface of the thin sheet to be welded.
[0015] Preferably, the two thin plates to be welded are respectively arranged on the sides of the ceramic limiting sheet, and the thin plates to be welded are attached to the surface of the section processing sheet, and the section processing sheet is used for grinding the sides of the thin plates to be welded.
[0016] A welding method of a remanufacturing welding device for a metal thin plate welded part. Insert the thin plate to be welded into the positioning sleeves provided in two groups to initially fix the position of the thin plate to be welded. One side of the thin plate to be welded is attached to the welding frame. The movement of the positioning sleeve drives the thin plate to be welded to slide while being attached to the side of the ceramic limiting sheet. After grinding, it is limited. When the laser welding head descends for welding, it drives the synchronous rod, the upper pressing strip and the ceramic limiting sheet to descend. The descent of the ceramic limiting sheet drives the welding groove opened on it to descend. The inner groove wall of the welding groove pads up the joint and supports the molten pool.
[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The remanufacturing welding device and its welding method for a metal thin plate welded part provided by the present invention effectively solve the problem of fixing the plate by pre-fixing the plate first and then positioning, grinding and precisely fixing, avoiding the deviation of the plate during welding. Secondly, the welding height and position are flexibly adjusted by the driving unit, improving the welding precision. During the welding process, the edge of the plate joint is strengthened, and the molten pool is supported by the welding groove to ensure the formation of the weld seam, greatly enhancing the welding stability. Description of the Drawings
[0018] Figure 1 It is a three-dimensional structural schematic diagram of the welding device of the present invention; Figure 2 It is a structural schematic diagram of the welding table and the synchronous groove of the present invention; Figure 3 It is a structural schematic diagram of the fixing frame and the slide rail of the present invention; Figure 4 It is a structural schematic diagram of the transmission screw and the linkage rod of the present invention; Figure 5 It is a structural schematic diagram of the upper pressing strip and the ceramic limiting sheet of the present invention; Figure 6 It is a structural schematic diagram of the ceramic limiting sheet and the section processing sheet of the present invention; Figure 7 It is a structural schematic diagram of the positioning hole and the welding groove of the present invention.
[0019] In the figure: 11, fixing frame; 12, slide rail; 13, positioning sleeve; 14, fastening nut; 15, thin sheet to be welded; 16, welding frame; 17, longitudinal adjusting frame; 18, laser welding head; 19, fastening pressing plate; 2, stabilizing component; 21, welding table; 22, synchronous groove; 23, support column; 24, synchronous rod; 25, upper pressing strip; 26, ceramic limiting piece; 27, positioning hole; 28, cutting surface treatment piece; 29, welding groove; 3, linkage rod; 4, transmission screw. Detailed implementation manner
[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0021] To further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.
[0022] Combined with Figures 1-7 , a remanufacturing welding device for a metal thin sheet welded part of the present invention includes a fixing frame 11. A slide rail 12 is provided on the upper surface of the fixing frame 11. A positioning sleeve 13 is embedded in the slide rail 12. The slide rail 12 and the positioning sleeve 13 are slidably connected. There are two groups of positioning sleeves 13, and the two groups of positioning sleeves 13 are respectively used to fix two metal thin sheets to be welded. A fastening nut 14 is provided at the top of the positioning sleeve 13. A thin sheet to be welded 15 is inserted into the positioning sleeve 13. A fastening pressing plate 19 is connected inside the positioning sleeve 13. The fastening pressing plate 19 is used to fix the thin sheet to be welded 15. The fastening pressing plate 19 penetrates through the outer wall of the positioning sleeve 13 and is embedded into the positioning sleeve 13. The positioning sleeve 13 and the fastening pressing plate 19 are rotatably connected. The fastening nut 14 is sleeved on the outer surface of the fastening pressing plate 19; During welding, first insert the thin sheet to be welded 15 that needs to be welded into the positioning sleeve 13. After inserting the two positioning sleeves 13 into the positioning sleeve 13, in order to ensure the stability during the subsequent welding process, it is necessary to pre-fix the position of the thin sheet to be welded 15 through the fastening pressing plate 19. The position of the thin sheet to be welded 15 is preliminarily restricted through the pre-fixation. Then, as the driving unit provided inside the welding device drives the longitudinal adjusting frame 17, the longitudinal adjusting frame 17 moves up and down inside the welding frame 16. The up and down movement of the longitudinal adjusting frame 17 drives the welding table 21 to move up and down, thereby adjusting the height of the laser welding head 18. Another driving unit is used to adjust the welding table 21, so that the welding table 21 is adjusted horizontally inside, and the welding point is advanced through the horizontal adjustment.
[0023] The top end of the fixing frame 11 is also fixedly connected with a welding frame 16. Inside the welding frame 16, a longitudinal adjusting frame 17 is embedded. Inside the longitudinal adjusting frame 17, a stabilizing component 2 is embedded. The stabilizing component 2 includes a welding table 21. The welding table 21 is embedded in the inner wall of the longitudinal adjusting frame 17. Inside the welding table 21, a laser welding head 18 is installed. The laser welding head 18 is used for welding metal thin plates. On one side surface of the welding table 21, a synchronous groove 22 is opened. Inside the synchronous groove 22, a synchronous rod 24 is connected. The synchronous rod 24 is embedded inside the synchronous groove 22. On one side of the welding table 21, a support column 23 is fixedly connected. Inside the support column 23, a double-headed telescopic rod is embedded. Both ends of the double-headed telescopic rod are fixedly connected with the synchronous rod 24. When the double-headed telescopic rod expands or contracts, it drives the synchronous rod 24 to slide horizontally inside the synchronous groove 22. The movement of the synchronous rod 24 drives the separation and fitting between the two ceramic limiting pieces 26. During welding, in order to ensure the integrity of the welded shape, before welding, the thin plate to be welded 15 is positioned. Through positioning, the butt joint of the welding section can be ensured to be in the best state. The specific operation is as follows: After the thin plate to be welded 15 is embedded into the positioning sleeve 13, by rotating the fastening nut 14, the fastening pressing plate 19 presses the thin plate to be welded 15. At this time, the fixation of the thin plate to be welded 15 by the fastening pressing plate 19 is in the initial stage. In this initial stage, the position of the thin plate to be welded 15 will be changed by the pushing force. First, one side surface of the thin plate to be welded 15 is attached to the side surface of the welding frame 16. Subsequently, by rotating the transmission screw 4, when the transmission screw 4 rotates, it drives the linkage rod 3 to move. When the linkage rod 3 moves, it drives the positioning sleeve 13 to slide inside the slide rail 12. When the positioning sleeve 13 slides, the thin plate to be welded 15 also slides along with the positioning sleeve 13. At this time, the thin plate to be welded 15 slides while attaching to the side surface of the ceramic limiting piece 26. When the side surface of the thin plate to be welded 15 passes through the section processing piece 28, the section processing piece 28 can scrape off the chips and other impurities on the side surface of the thin plate to be welded 15. By grinding the side surface of the thin plate to be welded 15, the flatness of the side surface of the thin plate to be welded 15 is higher. In this way, during welding, the fitting degree between the two thin plates to be welded 15 is higher. It can simultaneously and synchronously adjust the positions of the two positioning sleeves 13, thereby accurately controlling the position and spacing of the thin plate to be welded 15, and realizing the efficient and accurate positioning of the thin plate to be welded 15. During the sliding process, when the thin sheet to be welded 15 is subjected to extrusion pressure, it will shift to a certain extent. In this way, the fit between the thin sheet to be welded 15 and the ceramic limit piece 26 is ensured. After the above treatment, the fastening nut 14 is rotated again to make the fastening pressing plate 19 increase the limitation of the position of the thin sheet to be welded 15. Through this extrusion, the position of the thin sheet to be welded 15 can be locked, thus avoiding the problem of the thin sheet to be welded 15 running off during subsequent welding.
[0024] The bottom end of the synchronous rod 24 is connected with an upper pressing strip 25. A cutting surface treatment piece 28 is arranged on the side surface of the upper pressing strip 25 close to the thin sheet to be welded 15. A welding groove 29 is formed in the ceramic limit piece 26. The welding groove 29 is arranged directly below the laser welding head 18. A positioning hole 27 is formed in the upper pressing strip 25 at the position directly below the laser welding head 18. The upper pressing strip 25 is used to support the top surface of the thin sheet to be welded 15. The two thin sheets to be welded 15 are respectively arranged on the side surface of the ceramic limit piece 26. The thin sheet to be welded 15 is attached to the surface of the cutting surface treatment piece 28. The cutting surface treatment piece 28 is used to polish the side surface of the thin sheet to be welded 15. One side surface of the upper pressing strip 25 is connected with the ceramic limit piece 26. There are two groups of the upper pressing strip 25 and the ceramic limit piece 26. A laser welding head 18 is arranged directly above the two groups of ceramic limit pieces 26; The bottom end of the positioning sleeve 13 is fixedly connected with a linkage rod 3. The two groups of positioning sleeves 13 are connected through the linkage rod 3. A transmission screw rod 4 is embedded in the linkage rod 3. One end of the transmission screw rod 4 is connected with the driving rotation, and the driving device drives the transmission screw rod 4 to rotate.
[0025] In order to improve the stability of the welding process, not only can the fixation of the thin sheet to be welded 15 be increased and the thin sheet to be welded 15 be limited by the ceramic limit piece 26, but also the thin sheet to be welded 15 can be strengthened by the upper pressing strip 25. When the laser welding head 18 is welding, the descent of the laser welding head 18 drives the descent of the synchronous rod 24. When the synchronous rod 24 descends, it will drive the descent of the upper pressing strip 25 and the ceramic limit piece 26. When the upper pressing strip 25 descends until it presses on the surface of the thin sheet to be welded 15, the fixation of the joint edge of the thin sheet to be welded 15 is realized. In addition, when the ceramic limit piece 26 descends, the welding groove 29 also descends accordingly. During welding, in order to improve the coincidence effect between the thin sheets to be welded 15, the joint is padded by the inner groove wall of the welding groove 29. In order to prevent the liquid metal from flowing out of the gap, the inner groove wall of the welding groove 29 can play a role in supporting the molten pool, helping the back formation of the weld seam and ensuring the quality of the root weld seam.
[0026] During the welding process, the inner groove wall of the welding groove 29 can pad up the seam between the thin sheet parts 15 to be welded. This not only helps to improve the overlapping effect between the thin sheet parts 15 to be welded, ensuring the alignment accuracy of the weld seam, but also plays a key role in supporting the molten pool. This effectively prevents the loss of liquid metal from the gap, ensures the forming quality of the back of the weld seam, greatly improves the quality of the root weld seam, reduces the generation of internal defects in the weld seam, and improves the overall strength and reliability of the welded joint.
[0027] Secondly, for different plates, the size of the weld seam can also be adjusted. When adjusting, by adjusting the distance between the two synchronous rods 24, when the distance between the synchronous rods 24 increases, it drives the separation between the two upper pressing strips 25 and the ceramic limiting pieces 26. After the separation between the upper pressing strip 25 and the ceramic limiting piece 26, the size of the seam is thus changed. When the two groups of upper pressing strips 25 and ceramic limiting pieces 26 are separated, in order to improve the flow of liquid metal, additional backing plates can be provided to play a role in supporting and ensuring the forming of the weld seam.
[0028] A welding method for a remanufacturing welding device of a metal thin sheet welded part. Insert the thin sheet part 15 to be welded into the two groups of positioning sleeves 13 to initially fix the position of the thin sheet part 15 to be welded. One side of the thin sheet part 15 to be welded is attached to the welding frame 16. The movement of the positioning sleeve 13 drives the thin sheet part 15 to be welded to slide along the side of the ceramic limiting piece 26. After grinding, it is limited. When the laser welding head 18 descends for welding, it drives the synchronous rod 24, the upper pressing strip 25 and the ceramic limiting piece 26 to descend. The descent of the ceramic limiting piece 26 drives the welding groove 29 opened on it to descend. The inner groove wall of the welding groove 29 pads up the seam and supports the molten pool.
[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.
[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A remanufacturing welding device for a metal sheet welding part, characterized in that: Including a fixing frame; A slide rail is provided on the upper surface of the fixing frame. A positioning sleeve is embedded inside the slide rail. A fastening nut is provided at the top of the positioning sleeve. A thin sheet to be welded is inserted into the positioning sleeve. A fastening pressing plate is connected inside the positioning sleeve, and the fastening pressing plate is used to fix the thin sheet to be welded; A welding frame is further fixedly connected to the top of the fixing frame. A longitudinal adjusting frame is embedded and connected inside the welding frame. A stabilizing component is embedded inside the longitudinal adjusting frame. The stabilizing component includes a welding table. The welding table is embedded in the inner wall of the longitudinal adjusting frame. A laser welding head is installed inside the welding table, and the laser welding head is used to weld the metal thin sheet; A synchronous groove is provided on one side surface of the welding table. A synchronous rod is connected inside the synchronous groove. The bottom end of the synchronous rod is connected to an upper pressing strip. A ceramic limiting piece is connected to one side surface of the upper pressing strip. There are two groups of the upper pressing strip and the ceramic limiting piece. A laser welding head is provided directly above the two groups of ceramic limiting pieces.
2. The remanufacturing welding device for the metal sheet welding part according to claim 1, characterized in that: The slide rail and the positioning sleeve are slidably connected. There are two groups of the positioning sleeves, and the two groups of positioning sleeves are respectively used to fix two metal thin sheets to be welded.
3. The remanufacturing welding device for the metal sheet welding part according to claim 1, characterized in that: The fastening pressing plate penetrates through the outer wall of the positioning sleeve and is embedded into the positioning sleeve. The positioning sleeve and the fastening pressing plate are rotatably connected. The fastening nut is sleeved on the outer surface of the fastening pressing plate.
4. The remanufacturing welding device for the metal sheet welding part according to claim 1, characterized in that: The synchronous rod is embedded inside the synchronous groove. A support column is fixedly connected to one side of the welding table. A double-headed telescopic rod is embedded inside the support column. Both ends of the double-headed telescopic rod are fixedly connected to the synchronous rod.
5. The remanufacturing welding device for the metal sheet welding part according to claim 4, characterized in that: When the double-headed telescopic rod expands or contracts, it drives the synchronous rod to horizontally slide inside the synchronous groove. The movement of the synchronous rod drives the separation and fitting between the two groups of ceramic limiting pieces.
6. The remanufacturing welding device for the metal sheet welding part according to claim 1, characterized in that: A linkage rod is fixedly connected to the bottom end of the positioning sleeve. The two groups of positioning sleeves are connected by the linkage rod. A transmission screw rod is embedded inside the linkage rod. One end of the transmission screw rod is connected to a driving rotation, and the driving device drives the transmission screw rod to rotate.
7. The remanufacturing welding device for the metal sheet welded part according to claim 1, characterized in that: A cutting surface treatment piece is provided on the side surface of the upper pressing strip close to the thin sheet to be welded. A welding groove is provided on the ceramic limiting piece, and the welding groove is provided directly below the laser welding head.
8. The remanufacturing welding device for the metal sheet welding part according to claim 1, characterized in that: A positioning hole is provided at the position of the upper pressing strip directly below the laser welding head. The upper pressing strip is used to support the top surface of the thin sheet to be welded.
9. The remanufacturing welding device for the metal sheet welding part according to claim 1, characterized in that: The two thin sheets to be welded are respectively arranged on the side surfaces of the ceramic limiting pieces. The thin sheet to be welded is attached to the surface of the cutting surface treatment piece, and the cutting surface treatment piece is used to polish the side surface of the thin sheet to be welded.
10. The welding method of the remanufacturing welding device for the metal sheet welding part according to any one of claims 1-9, characterized in that: Insert the thin sheet to be welded into the two groups of positioning sleeves, initially fix the position of the thin sheet to be welded. One side surface of the thin sheet to be welded is attached to the welding frame. The movement of the positioning sleeve drives the thin sheet to be welded to slide while being attached to the side surface of the ceramic limiting piece. After polishing, it is limited. When the laser welding head descends for welding, it drives the synchronous rod, the upper pressing strip and the ceramic limiting piece to descend. The descent of the ceramic limiting piece drives the welding groove provided on it to descend. The inner groove wall of the welding groove pads up the joint and supports the molten pool.