Butt joint device for titanium alloy sheet laser welding

Abstract

The utility model discloses a butt joint device for titanium alloy sheet laser welding, which comprises a base, a working table is fixed at the top of the base, positioning mechanisms for positioning and butt joint of titanium alloy sheets are mounted at two ends of the top of the working table, each positioning mechanism comprises an L-shaped placing seat and a guide seat, the L-shaped placing seats are mounted at two ends of the working table, and the guide seats are mounted at two ends of the working table. The guide seat is fixedly mounted at the center of the front and back of the top of the workbench; positioning plates are installed on the front face and the back face of the top of the transverse end of the L-shaped containing base. A protection assembly used for shielding titanium alloy sheet welding sparks is arranged at one end of the inner side of each positioning plate. The protection assembly comprises an insertion groove, an insertion plate and a sparkproof baffle. Through cooperative work of the protection assembly and the positioning mechanism, spark protection and quick disassembly and assembly functions during titanium alloy sheet welding are achieved, high-precision positioning and stable welding are guaranteed, and therefore the welding quality, efficiency and yield are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of titanium alloy thin plate technology, specifically a butt welding device for laser welding of titanium alloy thin plates. Background Technology

[0002] Titanium alloy thin plates refer to rolled sheets of titanium-based alloys (such as Ti-6Al-4V, pure titanium, etc.) with a thickness typically ranging from 0.1 to 3 mm. They possess high strength, low density, corrosion resistance, and excellent biocompatibility, and require precision machining (such as laser cutting and stamping) and special welding processes (such as laser welding and electron beam welding). When laser welding titanium alloy thin plates, a butt welding device is needed to fix them together to improve the stability of the laser welding process.

[0003] Currently, existing laser welding butt welding devices for titanium alloy thin plates generally suffer from two major defects: Firstly, due to the lack of an effective spark protection structure, the high-temperature metal particles that splash during the welding process will cause mechanical wear on the titanium alloy surface, affecting the surface quality of the material; secondly, the positioning system of the existing devices is not accurate enough, making it difficult to align the thin plates, resulting in unstable control of the weld gap, which seriously reduces the accuracy and yield of the welding process. Summary of the Invention

[0004] The purpose of this invention is to provide a butt welding device for laser welding of titanium alloy thin plates. This invention achieves both spark protection and rapid assembly / disassembly during the welding of titanium alloy thin plates through the coordinated operation of protective components and positioning mechanisms, while also ensuring high-precision positioning and stable welding, thereby significantly improving welding quality, efficiency, and yield; thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A butt welding device for laser welding of titanium alloy thin plates includes a base, a worktable fixed on the top of the base, and positioning mechanisms for positioning and butt welding of titanium alloy thin plates installed at both ends of the top of the worktable. The positioning mechanisms include L-shaped placement seats and guide seats. The L-shaped placement seats are installed at both ends of the worktable, and the guide seats are fixedly installed at the center of the front and back of the top of the worktable.

[0007] Positioning plates are installed on the front and back of the top of the horizontal end of the L-shaped placement base. A protective component for shielding welding sparks of titanium alloy thin plates is provided on one inner end of the positioning plate. The protective component includes a slot, a plug plate and a spark-proof baffle. The slot is opened on the inner side of the positioning plate. The plug plate is snapped into the inside of the slot. The spark-proof baffle is fixedly connected between the two plug plates.

[0008] Preferably, the positioning structure further includes an electric telescopic rod, a moving slot, a moving block, a fixed block, and a fixed slot. The electric telescopic rod is fixedly installed at both ends of both sides of the workbench. Two parallel moving slots are symmetrically opened on both sides of the top of the workbench. The output end of the electric telescopic rod, which passes through the moving slot, is fixedly connected to a moving block. The moving block is slidably connected to the inside of the moving slot. A fixed block is fixedly connected to the top of the moving block. The fixed block is engaged with the inside of the fixed slot. The fixed slot is opened at the bottom of the L-shaped placement seat.

[0009] Preferably, the protective assembly further includes a connecting seat, a retaining plate, and a retaining groove. The connecting seat is fixedly installed at both ends of the top of the spark-proof baffle. The retaining plate is fixedly installed at both ends of the bottom of the connecting seat, and an insert plate is fixed at the center of the bottom of the connecting seat. The retaining plate is engaged with the inside of the retaining groove. The retaining groove is opened on the top of the positioning plate and is located at both ends of the top opening of the slot.

[0010] Preferably, a sliding plate is fixedly connected to one end of the positioning plate, and sliding grooves are provided at both ends of the inner side of the vertical end of the L-shaped placement seat, with the sliding plate slidably connected inside the sliding grooves.

[0011] Preferably, a limiting groove is provided at the bottom inner side of the positioning plate, and the limiting groove is interconnected with the slot.

[0012] Preferably, two mounting seats are symmetrically installed on the inner side of the vertical end of the L-shaped placement seat. A clamping cylinder is fixedly installed at the top end of the mounting seat, and the output end of the clamping cylinder, which passes through the bottom of the mounting seat, is connected to a pressure plate through a mounting plate.

[0013] Preferably, mounting blocks are symmetrically fixedly installed on the inner side of the mounting base, and mounting grooves are opened at both ends of the vertical inner side of the L-shaped placement base. The mounting blocks are snapped into the inside of the mounting grooves, and the mounting grooves are located at the inner end of the sliding groove.

[0014] Preferably, a number of positioning posts are fixedly installed at the bottom of the positioning plate, and a number of positioning grooves are opened at the front and back ends of the top of the horizontal end of the L-shaped hairpin holder, with positioning posts engaged inside the positioning grooves.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes a coordinated structural system consisting of a positioning plate, slot, insert plate, spark-proof baffle, connecting seat, clamping plate, and slot to reliably protect the outer surface of the titanium alloy sheet joint during welding. This not only prevents mechanical damage to the sheet surface from welding sparks and spatter but also improves operational safety, thereby indirectly ensuring the stability of welding quality. Furthermore, the snap-fit ​​design allows for quick assembly and disassembly of the spark-proof baffle, significantly enhancing the practicality and ease of maintenance of the equipment.

[0017] This invention utilizes components such as an electric telescopic rod, a moving groove, a moving block, an L-shaped placement seat, and a guide seat to facilitate the positioning of titanium alloy thin plates during butt welding, thereby improving the accuracy of the positioning and fixing of the titanium alloy thin plates. At the same time, the guide seat guides and positions the titanium alloy thin plates, thereby enhancing the overall stability and comprehensively improving welding accuracy, efficiency, and safety, ultimately increasing the accuracy and yield of titanium alloy thin plate welding.

[0018] In summary, this utility model, through the coordinated operation of the above-mentioned protective components and positioning mechanism, not only achieves spark protection and rapid assembly / disassembly during the welding of titanium alloy thin plates, but also ensures high-precision positioning and stable welding, thereby significantly improving welding quality, efficiency and yield. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the explosion separation structure of this utility model;

[0021] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This is a top view of the workbench structure of this utility model;

[0023] Figure 5 This is a bottom view of the L-shaped placement seat of this utility model.

[0024] In the diagram: 1. Base; 2. Workbench; 3. Electric telescopic rod; 301. Moving slot; 302. Moving block; 303. Fixing block; 304. Fixing slot; 4. L-shaped placement seat; 5. Positioning plate; 501. Slide plate; 502. Slide groove; 503. Limiting slot; 6. Positioning column; 601. Positioning slot; 7. Slot; 701. Insert plate; 8. Spark-proof baffle; 9. Connecting seat; 901. Clamping plate; 902. Clamping groove; 10. Mounting seat; 11. Mounting block; 12. Mounting slot; 13. Clamping cylinder; 14. Pressing plate; 15. Guide seat. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-5This utility model provides a technical solution:

[0027] A butt welding device for laser welding of titanium alloy thin plates includes a base 1, a worktable 2 fixed on the top of the base 1, and positioning mechanisms for positioning and butt welding of titanium alloy thin plates installed at both ends of the top of the worktable 2.

[0028] The positioning mechanism includes an L-shaped placement seat 4 and a guide seat 15. The L-shaped placement seat 4 is installed at both ends of the workbench 2, and the guide seat 15 is fixedly installed at the center of the front and back of the top of the workbench 2. The positioning structure also includes an electric telescopic rod 3, a moving groove 301, a moving block 302, a fixing block 303, and a fixing groove 304. The electric telescopic rod 3 is fixedly installed at both ends of both sides of the workbench 2. Two parallel moving grooves 301 are symmetrically opened on both sides of the top of the workbench 2. The output end of the electric telescopic rod 3, which passes through the moving groove 301, is fixedly connected to the moving block 302. The moving block 302 is slidably connected to the inside of the moving groove 301. The top of the moving block 302 is fixedly connected to the fixing block 303. The fixing block 303 is engaged with the inside of the fixing groove 304. The fixing groove 304 is opened at the bottom of the L-shaped placement seat 4. By setting the fixing block 303 and the fixing groove 304, the L-shaped placement seat 4 can be easily disassembled and installed.

[0029] This utility model utilizes components such as an electric telescopic rod 3, a moving groove 301, a moving block 302, an L-shaped placement seat 4, and a guide seat 15 to facilitate the positioning of titanium alloy thin plates during butt welding, thereby improving the accuracy of the positioning and fixing of the titanium alloy thin plates. At the same time, the guide seat 15 guides and positions the titanium alloy thin plates, thereby enhancing the overall stability and comprehensively improving welding accuracy, efficiency, and safety, ultimately increasing the accuracy and yield of titanium alloy thin plate welding.

[0030] Furthermore, by activating the electric telescopic rod 3, its output end drives the moving block 302 to move left and right within the moving groove 301, so that the moving block 302 can drive the L-shaped placement seat 4 to approach the guide seat 15 set at the top center of the workbench 2. This facilitates the positioning and docking of the titanium alloy sheet placed on the L-shaped placement seat 4 with the guide seat 15, thereby improving the accuracy, efficiency and safety of the titanium alloy sheet welding.

[0031] One end of the positioning plate 5 is fixedly connected to a sliding plate 501. The inner ends of the vertical end of the L-shaped placement base 4 are provided with sliding grooves 502, and the sliding plate 501 is slidably connected inside the sliding grooves 502. A limiting groove 503 is provided at the bottom inner side of the positioning plate 5, mainly used for limiting and fixing the thickness of the titanium alloy thin plate; the limiting groove 503 communicates with the slot 7, facilitating the provision of a positioning reference for the installation of the spark-proof baffle 8, thereby improving the stability of the spark-proof baffle 8 during installation. Several sets of positioning posts 6 are fixedly installed at the bottom of the positioning plate 5. Several sets of positioning grooves 601 are provided at the front and back ends of the top of the horizontal end of the L-shaped placement base 4, and the positioning posts 6 are engaged inside the positioning grooves 601.

[0032] This utility model utilizes components such as a sliding plate 501, a sliding groove 502, a positioning post 6, and a positioning slot 601 to facilitate the positioning and installation of the positioning plate 5, thereby improving the stability of the installation. Simultaneously, a limiting slot 503 is provided to limit the thickness of the titanium alloy sheet. The limiting slot 503 is 2mm high and can only be used on titanium alloy sheets with a thickness of 2mm.

[0033] Positioning plates 5 are installed on the front and back of the top of the horizontal end of the L-shaped placement base 4. A protective component for shielding welding sparks of titanium alloy thin plates is provided on one inner end of the positioning plate 5. The protective component includes a slot 7, a plug plate 701 and a spark-proof baffle 8. The slot 7 is opened on the inner side of the positioning plate 5. The plug plate 701 is snapped into the inside of the slot 7. The spark-proof baffle 8 is fixedly connected between the two plug plates 701.

[0034] The protective assembly also includes a connector 9, a retaining plate 901, and a slot 902. The connector 9 is fixedly installed at both ends of the top of the spark-proof baffle 8. The retaining plate 901 is fixedly installed at both ends of the bottom of the connector 9, and an insert plate 701 is fixedly installed at the center of the bottom of the connector 9. The retaining plate 901 is snapped into the inside of the slot 902. The slot 902 is opened on the top of the positioning plate 5 and is located at both ends of the top opening of the slot 7.

[0035] This utility model utilizes a coordinated structural assembly consisting of a positioning plate 5, a slot 7, an insert plate 701, a spark-proof baffle 8, a connecting seat 9, a clamping plate 901, and a clamping groove 902 to reliably protect the outer surface of the titanium alloy sheet joint during welding. This not only prevents mechanical damage to the sheet surface from welding sparks and spatter but also improves operational safety, thereby indirectly ensuring the stability of welding quality. Furthermore, the snap-fit ​​design allows for quick assembly and disassembly of the spark-proof baffle 8, significantly enhancing the equipment's practicality and ease of maintenance.

[0036] Furthermore, by hand, the spark-proof baffle 8 is picked up and its two end inserts 701 are inserted into the slots 7 inside the positioning plate 5. Then, the retaining plate 901 at the bottom of the connecting seat 9 is inserted into the slot 902, which facilitates the positioning and installation of the spark-proof baffle. The bottom of the inserted spark-proof baffle directly contacts the surface of the titanium alloy sheet placed on the L-shaped placement seat 4. Conversely, the spark-proof baffle can be quickly disassembled.

[0037] In summary, this utility model, through the coordinated operation of the above-mentioned protective components and positioning mechanism, not only achieves spark protection and rapid assembly / disassembly during the welding of titanium alloy thin plates, but also ensures high-precision positioning and stable welding, thereby significantly improving welding quality, efficiency and yield.

[0038] Two mounting bases 10 are symmetrically installed on the inner side of the vertical end of the L-shaped placement base 4. A clamping cylinder 13 is fixedly installed at the top end of the mounting base 10. The output end of the clamping cylinder 13, which passes through the bottom of the mounting base 10, is connected to a pressure plate 14 through a mounting plate. Mounting blocks 11 are symmetrically fixedly installed on the inner side of the mounting base 10. Mounting grooves 12 are opened at both ends of the inner side of the vertical end of the L-shaped placement base 4. Mounting blocks 11 are snapped into the inside of the mounting grooves 12. The mounting grooves 12 are located at the inner end of the slide groove 502.

[0039] This utility model uses the above-mentioned mounting base 10, mounting block 11, mounting groove 12, clamping cylinder 13 and pressure plate 14 to work together, so as to facilitate the clamping and fixing of the titanium alloy thin plate placed on the L-shaped placement base 4, thereby improving its fixing stability; at the same time, it also facilitates the quick assembly and disassembly of the mounting base 10, thereby facilitating the maintenance of the clamping cylinder 13 on it.

[0040] By activating the clamping cylinder 13, its output end drives the pressure plate 14 on the mounting plate to descend, so that the pressure plate 14 fits against the surface of the titanium alloy sheet, thereby pressing and fixing it; and the pressure plate 14 is made of rubber material, so it will not cause wear to the surface of the titanium alloy sheet.

[0041] The model of the electric telescopic pole 3 is ECMA; it has a repeatability of ±0.02mm, a stroke of 50-100mm and a thrust of 200-500N, and achieves micron-level positioning of titanium alloy thin plates through servo motor drive.

[0042] The clamping cylinder 13 is an SMC model. It adopts a double-acting pneumatic drive principle, and the compressed air (0.4-0.6MPa) is alternately introduced into the chambers on both sides of the piston through the control of the solenoid valve, which drives the clamping plate 14 to achieve a linear reciprocating motion with an adjustable clamping force of 10-50N, ensuring zero displacement during the welding of titanium alloy thin plates while maintaining flexible clamping.

[0043] In practical use, the titanium alloy sheet is placed on the L-shaped placement seat 4, with the edge of the sheet engaging the limiting groove 503. Then, the electric telescopic rod 3 is activated, moving the L-shaped placement seat 4 towards the center, allowing the two titanium alloy sheets to precisely align under the guidance of the guide seat 15. Next, the spark-proof baffle 8 is installed, with the insert plates 701 on both sides inserted into the corresponding slots 7 on the positioning plate. Simultaneously, the locking plate 901 engages with the locking groove 902 to secure the spark-proof baffle 8. Then, the clamping cylinder 13 is activated, driving the pressure plate 14 to fix the titanium alloy sheet. After fixing, laser welding is performed, with the spark-proof baffle 8 effectively blocking welding sparks. After welding is completed, the titanium alloy sheet can be removed by reversing the operation.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A butt welding device for laser welding of titanium alloy thin plates, comprising a base (1), characterized in that: The top of the base (1) is fixed with a workbench (2), and the top two ends of the workbench (2) are equipped with positioning mechanisms for positioning and docking of titanium alloy thin plates. The positioning mechanism includes an L-shaped placement seat (4) and a guide seat (15). The L-shaped placement seat (4) is installed at both ends of the workbench (2), and the guide seat (15) is fixedly installed at the center of the front and back of the top of the workbench (2). The L-shaped placement base (4) has a positioning plate (5) installed on the front and back of the top of the horizontal end. The inner end of the positioning plate (5) is provided with a protective component for shielding welding sparks of titanium alloy thin plates. The protective component includes a slot (7), a plug plate (701) and a spark baffle (8). The slot (7) is opened on the inner side of the positioning plate (5). The plug plate (701) is snapped into the inside of the slot (7). The spark baffle (8) is fixedly connected between the two plug plates (701).

2. The butt welding device for laser welding of titanium alloy thin plates according to claim 1, characterized in that: The positioning mechanism also includes an electric telescopic rod (3), a moving groove (301), a moving block (302), a fixed block (303), and a fixed groove (304). The electric telescopic rod (3) is fixedly installed at both ends of the workbench (2). Two parallel moving slots (301) are symmetrically opened at both ends of the top of the workbench (2). The output end of the electric telescopic rod (3) that passes through the moving slot (301) is fixedly connected to a moving block (302). The moving block (302) is slidably connected to the inside of the moving slot (301). A fixing block (303) is fixedly connected to the top of the moving block (302). The fixing block (303) is snapped into the inside of the fixing slot (304). The fixing slot (304) is opened at the bottom of the L-shaped placement seat (4).

3. The butt welding device for laser welding of titanium alloy thin plates according to claim 1, characterized in that: The protective assembly also includes a connector (9), a card plate (901), and a card slot (902); The connecting seat (9) is fixedly installed at both ends of the top of the spark-proof baffle (8). The bottom ends of the connecting seat (9) are fixedly installed with a card plate (901), and the bottom center of the connecting seat (9) is fixed with a plug plate (701). The card plate (901) is snapped into the inside of the card slot (902). The card slot (902) is opened on the top of the positioning plate (5) and located at both ends of the top opening of the slot (7).

4. The butt welding device for laser welding of titanium alloy thin plates according to claim 1, characterized in that: One end of the positioning plate (5) is fixedly connected to a sliding plate (501), and the two ends of the vertical inner side of the L-shaped placement seat (4) are provided with sliding grooves (502), and the sliding plate (501) is slidably connected inside the sliding grooves (502).

5. The butt welding device for laser welding of titanium alloy thin plates according to claim 4, characterized in that: The positioning plate (5) has a limiting groove (503) at the bottom inner side, and the limiting groove (503) is interconnected with the slot (7).

6. The butt welding device for laser welding of titanium alloy thin plates according to claim 1, characterized in that: The L-shaped placement seat (4) has two mounting seats (10) symmetrically installed on the inner side of the vertical end. A clamping cylinder (13) is fixedly installed at the top end of the mounting seat (10). The output end of the clamping cylinder (13) passing through the bottom of the mounting seat (10) is connected to a pressure plate (14) through the mounting plate.

7. The butt welding device for laser welding of titanium alloy thin plates according to claim 6, characterized in that: The mounting base (10) is symmetrically fixed with mounting blocks (11) on its inner side. The L-shaped placement base (4) has mounting grooves (12) at both ends of its vertical inner side. The mounting grooves (12) are fitted with mounting blocks (11) inside. The mounting grooves (12) are located at the inner end of the slide groove (502).

8. The butt welding device for laser welding of titanium alloy thin plates according to claim 1, characterized in that: The bottom of the positioning plate (5) is fixedly installed with several sets of positioning posts (6), and the front and back ends of the top of the horizontal end of the L-shaped placement seat (4) are provided with several sets of positioning grooves (601), and the positioning posts (6) are snapped into the inside of the positioning grooves (601).

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