A welding apparatus and welding method for nickel-based alloy composite plates

Abstract

This invention relates to the field of nickel-based alloy composite plate welding technology, specifically to a welding apparatus and method for nickel-based alloy composite plates, comprising: a processing table, the processing table further having a drive cavity; a top clamp, the top clamp being disposed on both sides of the processing table; a lifting mechanism, the lifting mechanism including a liftable lifting plate, the lifting plate being connected to the top clamp by a linkage rod; and a welding robot, the welding robot being disposed above the processing table for performing welding operations on two nickel-based alloy composite plates to be welded after being joined on the processing table. Through the cooperation of the lifting mechanism, the linkage rod, and the top clamp, synchronous positioning of multiple parts is achieved.

Description

Technical Field

[0001] This invention relates to the field of nickel-based alloy composite plate welding technology, specifically to a welding apparatus and welding method for nickel-based alloy composite plates. Background Technology

[0002] Nickel-based alloy composite plates combine the corrosion resistance and high temperature resistance of nickel-based alloys with the high strength and low cost advantages of the base material. They are widely used in high-end equipment manufacturing fields such as petrochemicals, nuclear power, and marine engineering. The positioning accuracy of their welding joints directly determines the mechanical and sealing performance of the welded joints. Therefore, stringent requirements of high precision and high adaptability are put forward for the plate positioning device before welding.

[0003] In existing technologies, positioning devices for welding metal composite plates often employ multiple independent pneumatic clamps to position the top and sides of the plate separately. Some devices also include separate adjustment mechanisms to adjust the clamp spacing to accommodate plates of different specifications. For example, multiple pneumatic grippers are arranged around the processing table to clamp the top, and the spacing of the side positioning blocks is adjusted manually using bolts. This meets the positioning requirements of composite plates of different widths, achieving basic positioning of the plate before welding.

[0004] However, existing positioning devices still have core shortcomings in practical applications. The independent control of multiple drive sources leads to poor positioning synchronization. Multiple sets of pneumatic clamps need to be supplied with air and controlled separately, which can easily cause the clamps to move asynchronously, resulting in uneven force on the plate and displacement. It is difficult to ensure accurate docking precision, which in turn affects the quality of the welded joint. Summary of the Invention

[0005] To address the problems existing in the prior art, a welding device and welding method for nickel-based alloy composite plates are provided. Through the cooperation of the lifting mechanism, linkage rod and top clamp, synchronous positioning of multiple parts is achieved.

[0006] To address the problems of existing technologies, the present invention provides a welding apparatus for nickel-based alloy composite plates, comprising: A processing table having a processing surface for placing two nickel-based alloy composite plates to be welded, the two nickel-based alloy composite plates to be welded can be butted together on the processing surface, and the processing table also having a drive cavity; Top clamps are provided on both sides of the processing table and are used to position and clamp the tops of the two nickel-based alloy composite plates to be welded after docking. A lifting mechanism is disposed in the drive cavity of the processing table. The lifting mechanism includes a liftable lifting plate. A linkage rod is provided between the lifting plate and the top clamps. The lifting plate has an initial high position and a clamped low position. When the lifting plate is in the initial high position, the linkage rod drives all the top clamps to remain open. When the lifting plate moves from the high position to the low position and is in the clamped low position, the linkage rod drives all the top clamps to move towards each other to position and clamp the tops of the two nickel-based alloy composite plates to be welded after being joined on the processing table. A welding robot is positioned above the processing table and is used to perform welding operations on two nickel-based alloy composite plates that have been joined together on the processing table.

[0007] Preferably, two symmetrically arranged flat plates are provided above the lifting plate, and a spacing adjustment mechanism is provided between the two flat plates. The spacing adjustment mechanism is used to drive the two flat plates to move in opposite directions. The lower ends of the linkage rods on both sides are rotatably connected to the corresponding flat plates. The movement of the flat plates can synchronously adjust the spacing of the linkage rods on the same side and the corresponding top clamps. An avoidance opening is provided on the processing table to avoid the movement of the linkage rods. The top clamps are provided at the upper ends of the linkage rods.

[0008] Preferably, the linkage rod is in the shape of a "7", the lower end of the linkage rod is rotatably connected to the top of the corresponding flat plate, and the middle section of the linkage rod is provided with a positioning groove, the positioning groove including an upper section that is vertically arranged and a lower section that is inclined inward; Guide rods are provided on both sides of the drive cavity. The guide rods pass through the sliding grooves of all the linkage rods on the corresponding side. Movable seats are provided at both ends of the guide rods. The movable seats can move together with the plate. A first telescopic rod connects the movable seats and the corresponding plate.

[0009] Preferably, the spacing adjustment mechanism includes a dual-axis motor disposed at the center of the top of the lifting plate. The two shaft ends of the dual-axis motor are respectively connected to lead screws with opposite rotation directions. Shaft seats are disposed on both sides of the lifting plate. The ends of the lead screws are rotatably connected to the corresponding shaft seats. Each lead screw is fitted with a lead screw sleeve. The lead screw sleeve is fixedly connected to the corresponding plate through a connecting plate. A first slider is disposed at the bottom of the plate. A first slide rail extending along the length direction of the lead screw is opened at the top of the lifting plate. The first slider slides in cooperation with the first slide rail.

[0010] Preferably, the top of the movable seat is provided with a second slider, and the top of the drive cavity is provided with a second slide rail extending along the length of the lead screw, and the second slider slides in cooperation with the second slide rail.

[0011] Preferably, the processing table has L-shaped side positioning plates on both sides of the processing surface for limiting the side of the nickel-based alloy composite plate. The processing surface of the processing table has a strip-shaped through groove for the extension plate to move. One side of the side positioning plate is connected to an extension plate that extends through the strip-shaped through groove into the drive cavity. The end of the extension plate away from the side positioning plate is connected to a vertically arranged second telescopic rod. The end of the second telescopic rod away from the extension plate is connected to the corresponding flat plate. The movement of the flat plate can synchronously drive the side positioning plate to move.

[0012] Preferably, the lifting mechanism further includes a hydraulic cylinder and four guide columns. The hydraulic cylinder is disposed at the lower end of the drive cavity, and the output shaft of the hydraulic cylinder is fixedly connected to the bottom of the lifting plate. The four guide columns are vertically disposed at the edge of the lifting plate. The drive cavity is provided with guide sleeves corresponding to each of the guide columns. The guide columns pass through the corresponding guide sleeves and move along their limits.

[0013] Preferably, the top clamp includes an adjusting block, a buffer sleeve, a buffer rod, a rubber pressure head, a spring, a threaded sleeve, and a locking nut; The upper end of the linkage rod has a strip-shaped opening, the buffer sleeve passes through the strip-shaped opening, and its lower end is fixedly connected to the adjusting block. The top of the adjusting block slides in contact with the lower surface of the upper end of the linkage rod, and the top of the adjusting block is provided with limiting blocks extending along the length direction of the strip-shaped opening on both sides. The upper end of the linkage rod is provided with a limiting groove for the limiting blocks to slide in cooperation. The threaded sleeve is fixedly sleeved on the outside of the upper end of the buffer sleeve, and the locking nut is threadedly connected to the threaded sleeve and can abut against the outer side of the upper end of the linkage rod away from the adjusting block. The buffer rod is movably disposed inside the buffer sleeve, with one end extending toward the processing table and fixedly connected to the rubber pressure head, and the other end provided with a buffer piston; The spring is located inside the buffer sleeve, and one end of the spring is elastically abutting against the buffer piston.

[0014] Preferably, push plates are provided on both sides of the processing table. The push plates are used to bring two nickel-based alloy composite plates to be welded together. The processing table is also provided with electric push rods that correspond one-to-one with the push plates. The output end of the electric push rod is connected to the corresponding push plate and is used to drive the push plate to move along the processing surface.

[0015] The present invention also provides a welding method for a welding apparatus for nickel-based alloy composite plates, comprising the following steps: S1. Start the dual-axis motor to drive the two flat plates to move towards each other or away from each other, and synchronously adjust the distance between the top clamp and the side positioning plate to adapt to the specifications of the nickel-based alloy composite plate to be welded. S2. Place the two composite plates to be welded on the processing surface of the processing table, start the electric push rod to drive the push plate to bring the two composite plates together and precisely connect them. S3. Start the hydraulic cylinder to drive the lifting plate to descend, which in turn drives the linkage rod to move the top clamp vertically downward, clamping and positioning the top of the composite plate. The side positioning plate simultaneously limits the side of the composite plate. S4. Start the welding robot above the processing table to weld the joint of the two composite plates; S5. After welding is completed, the hydraulic cylinder drives the lifting plate to rise, causing the top clamp to open outward. The electric push rod drives the push plate to reset, removes the welded composite plate, and the device returns to its initial state.

[0016] The advantages of this invention compared to the prior art are: 1. This invention uses a single drive source to achieve synchronous positioning of multiple parts. The hydraulic cylinder is the sole drive source for lifting and lowering. Combined with the mechanical linkage structure of the linkage rod and guide rod, it can synchronously drive all the top clamps on both sides of the processing table to complete the opening and clamping actions. This replaces the traditional method of independently driving multiple sets of pneumatic clamps, fundamentally avoiding the problem of plate force displacement caused by asynchronous actions of multiple drive sources. It greatly improves the synchronization and docking accuracy of plate positioning, while reducing the number of drive components, simplifying the overall structure of the device, and reducing the maintenance cost and failure rate of the equipment.

[0017] 2. This invention realizes the linkage spacing adjustment between the top clamp and the side positioning plate. The spacing adjustment mechanism with a dual-axis motor as the core can drive the two plates to move synchronously in opposite directions. The plates drive the top clamp through the linkage rod, and drive the side positioning plate to adjust the spacing synchronously through the vertical telescopic rod and the extension plate. This allows the spacing between the top clamp and the side limit to be matched in one go, without the need to adjust each positioning structure separately. This greatly simplifies the positioning adjustment process of nickel-based alloy composite plates of different widths, significantly shortens the tooling adjustment time, and improves the efficiency of welding operations. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a welding device for a nickel-based alloy composite plate according to the present invention.

[0019] Figure 2 This is a top view of a welding apparatus for a nickel-based alloy composite plate according to the present invention.

[0020] Figure 3 yes Figure 2 Sectional view along AA.

[0021] Figure 4 yes Figure 2 A three-dimensional sectional view along point AA.

[0022] Figure 5 yes Figure 4 Enlarged view of point E in the middle.

[0023] Figure 6 This is a partially exploded view of the top clamp of a welding device for a nickel-based alloy composite plate according to the present invention.

[0024] Figure 7 yes Figure 2 A three-dimensional sectional view of the structure at point BB.

[0025] Figure 8 yes Figure 2 A three-dimensional sectional view of the structure at the center CC.

[0026] Figure 9 yes Figure 2 Sectional view along the middle DD.

[0027] Figure 10 This is a partial three-dimensional structural schematic diagram of a welding device for a nickel-based alloy composite plate according to the present invention.

[0028] Figure 11 This is a partial three-dimensional structural diagram of the linkage rod and positioning fixture of the welding device for a nickel-based alloy composite plate according to the present invention.

[0029] The diagram is labeled as follows: 1. Processing table; 11. Clearance opening; 12. Strip groove; 13. Push plate; 14. Electric push rod; 2. Top clamp; 21. Adjusting block; 211. Limiting block; 22. Buffer sleeve; 23. Buffer rod; 231. Buffer piston; 24. Rubber pressure head; 25. Spring; 26. Threaded sleeve; 27. Locking nut; 3. Lifting mechanism; 31. Lifting plate; 32. Flat plate; 321. First slider; 322. First slide rail; 33. Spacing adjustment machine 331. Dual-axis motor; 332. Lead screw; 333. Shaft seat; 334. Lead screw sleeve; 335. Connecting plate; 34. Guide rod; 35. Moving seat; 351. Second slider; 352. Second slide rail; 36. First telescopic rod; 37. Hydraulic cylinder; 38. Guide column; 39. Guide sleeve; 4. Linkage rod; 41. Sliding groove; 42. Strip opening; 43. Limiting groove; 5. Welding robot; 6. Side positioning plate; 61. Extension plate; 62. Second telescopic rod. Detailed Implementation

[0030] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figures 1 to 3 As shown: A welding apparatus for a nickel-based alloy composite plate, comprising: The processing table 1 has a processing surface for placing two nickel-based alloy composite plates to be welded, and the two nickel-based alloy composite plates to be welded can be mated on the processing surface. The processing table 1 also has a driving cavity. Top clamp 2, which is disposed on both sides of the processing table 1, is used to position and clamp the top of the two nickel-based alloy composite plates to be welded after docking; A lifting mechanism 3 is disposed in the drive cavity of the processing table 1. The lifting mechanism 3 includes a lifting plate 31 that can be raised and lowered. A linkage rod 4 is provided between the lifting plate 31 and the top clamp 2. The lifting plate 31 has an initial state at a high position and a clamping state at a low position. When the lifting plate 31 is in the initial state at a high position, the linkage rod 4 drives all the top clamps 2 to remain open. When the lifting plate 31 moves from the high position to the low position and is in the clamping state at a low position, the linkage rod 4 drives all the top clamps 2 to move towards each other to position and clamp the tops of the two nickel-based alloy composite plates to be welded after being joined on the processing table 1. Welding robot 5 is positioned above the processing table 1 and is used to perform welding operations on two nickel-based alloy composite plates that have been joined together on the processing table 1.

[0032] This welding device uses the lifting mechanism 3 as the sole drive source, and works in conjunction with the linkage rod 4 to achieve synchronous linkage of all the top clamps 2 on both sides of the processing table 1. The lifting plate 31 has two working states: a high initial state and a low clamping state. In the initial state, the lifting plate 31 is in a high position. At this time, the lifting plate 31, through the linkage rod 4, drives all the top clamps 2 on both sides of the processing table 1 to remain open, facilitating the placement of two nickel-based alloy composite plates to be welded on the processing surface of the processing table 1 and the completion of the docking operation. Once the two nickel-based alloy composite plates are docked in place on the processing surface, the lifting mechanism... The lifting plate 31 is driven to move from a high position to a low position clamping state. The descent of the lifting plate 31 is synchronously transmitted to all the top clamps 2 through the linkage rod 4, driving the top clamps 2 on both sides of the processing table 1 to move in opposite directions until the tops of the two nickel-based alloy composite plates after docking are accurately and synchronously positioned and clamped. This replaces the traditional positioning method of independent driving of multiple pneumatic clamps. Multi-point synchronous positioning can be achieved with only a single drive source. After the pre-welding positioning of the plates is completed, the welding robot 5 above the processing table 1 can perform welding operations on the docking joint of the plates.

[0033] Reference Figure 3 and Figure 4As shown: Two symmetrically arranged flat plates 32 are provided above the lifting plate 31. A spacing adjustment mechanism 33 is provided between the two flat plates 32. The spacing adjustment mechanism 33 is used to drive the two flat plates 32 to move in opposite directions. The lower ends of the linkage rods 4 on both sides are rotatably connected to the corresponding flat plates 32. The movement of the flat plates 32 can synchronously adjust the spacing of the linkage rods 4 on the same side and the corresponding top clamps 2. An avoidance opening 11 is provided on the processing table 1. The avoidance opening 11 is used to avoid the movement of the linkage rods 4. The top clamps 2 are provided at the upper end of the linkage rods 4.

[0034] Two flat plates 32 are symmetrically arranged above the lifting plate 31, and a spacing adjustment mechanism 33 is provided between the two flat plates 32. The linkage rods 4 on both sides of the processing table 1 are respectively connected to the corresponding flat plates 32. This structure can adapt to the welding positioning requirements of nickel-based alloy composite plates of different widths. When the width of the composite plate to be welded changes, the spacing adjustment mechanism 33 drives the two flat plates 32 to move synchronously in opposite or opposite directions. The movement of the flat plates 32 will synchronously drive the linkage rods 4 connected to them to adjust their positions, thereby synchronously adjusting the spacing of the corresponding top clamps 2 connected to the linkage rods 4, so that the clamping spacing of the top clamps 2 on both sides matches the width of the composite plate to be welded. This realizes the positioning adaptation of nickel-based alloy composite plates of different specifications. Moreover, the spacing adjustment of the top clamps 2 on both sides can be completed synchronously with a single spacing adjustment mechanism 33. Combined with the single drive source positioning of the lifting mechanism 3, the adjustment convenience and positioning adaptability of the device are further improved.

[0035] Reference Figure 3 , Figure 4 , Figure 10 and Figure 11 As shown: The linkage rod 4 is in the shape of a "7". The lower end of the linkage rod 4 is rotatably connected to the top of the corresponding plate 32. The middle section of the linkage rod 4 is provided with a positioning groove 41. The positioning groove 41 includes an upper section that is vertically arranged and a lower section that is inclined inward. Guide rods 34 are provided on both sides of the drive cavity. The guide rods 34 pass through the positioning slots 41 of all the linkage rods 4 on the corresponding side. Movable seats 35 are provided at both ends of the guide rods 34. The movable seats 35 can move together with the plate 32. A first telescopic rod 36 is connected between the movable seats 35 and the corresponding plate 32.

[0036] The "7"-shaped linkage rod 4 is rotatably connected to the top of the plate 32 via its lower end. The middle section of the linkage rod 41 consists of a vertical upper section and an inner inclined lower section. The guide rods 34 on both sides of the drive cavity pass through the corresponding sliding grooves 41 of all linkage rods 4. The movable seats 35 at both ends of the guide rods 34 are connected to the plate 32 via the first telescopic rod 36 and can move synchronously with the plate 32. When the lifting plate 31 drives the plate 32 to move up and down, the plate 32 will synchronously drive the lower end of the linkage rod 4 to move up and down together. At this time, the guide rod 34 fixed in the drive cavity will slide relative to the sliding groove 41, passing through the upper section of the sliding groove 41. The lower section's structure guides the linkage rod 4, causing it to swing around its rotational connection point with the plate 32. This, in turn, drives the top clamp 2 at the upper end of the linkage rod 4 to switch between opening and vertical downward positioning. The first telescopic rod 36 adapts to the synchronous movement requirements of the plate 32 and the moving seat 35, ensuring the stable guidance of the guide rod 34 to the sliding groove 41. Through the coordinated mechanical structure, the entire system achieves a precise conversion from the linear lifting of the lifting plate 31 to the opening, closing, and positioning of the top clamp 2. Furthermore, since multiple linkage rods 4 are guided and driven by the same guide rod 34, the synchronicity and consistency of the movements of all top clamps 2 are ensured. Reference Figure 3 , Figure 8 and Figure 11 As shown: The spacing adjustment mechanism 33 includes a dual-axis motor 331 located at the top center of the lifting plate 31. The two shaft ends of the dual-axis motor 331 are respectively connected to lead screws 332 with opposite rotation directions. Shaft seats 333 are provided on both sides of the lifting plate 31. The ends of the lead screws 332 are rotatably connected to the corresponding shaft seats 333. Each lead screw 332 is fitted with a lead screw sleeve 334. The lead screw sleeve 334 is fixedly connected to the corresponding flat plate 32 through a connecting plate 335. A first slider 321 is provided at the bottom of the flat plate 32. A first slide rail 322 extending along the length direction of the lead screws 332 is provided at the top of the lifting plate 31. The first slider 321 and the first slide rail 322 are slidably engaged.

[0037] The spacing adjustment mechanism 33 uses a dual-axis motor 331 at the top center of the lifting plate 31 as its driving core. The two shafts of the dual-axis motor 331 are connected to lead screws 332 with opposite directions of rotation. The ends of the lead screws 332 are rotated and engaged with the bearing seats 333 on both sides of the lifting plate 31 to achieve stable support for the lead screws 332. The lead screw sleeve 334 on the lead screw 332 is fixed to the corresponding plate 32 through the connecting plate 335. The first slider 321 at the bottom of the plate 32 is slidably engaged with the first slide rail 322 at the top of the lifting plate 31 to form a guide and limit for the movement of the plate 32.

[0038] During operation, the dual-axis motor 331 starts and drives two lead screws 332 with opposite rotation directions to rotate synchronously. Utilizing the threaded transmission between the lead screws 332 and the lead screw sleeves 334, the two lead screw sleeves 334 move in opposite or opposite linear motions along the lead screws 332. The movement of the lead screw sleeves 334 synchronously drives the corresponding flat plate 32 to slide along the first slide rail 322 through the connecting plate 335, thereby realizing the adjustment of the distance between the two flat plates 32. Relying on the transmission of the lead screws 332 with opposite rotation directions and the guiding and limiting of the slide rail slider, the synchronicity, stability and accuracy of the movement of the two flat plates 32 are ensured. Only a single dual-axis motor 331 is needed to drive the two flat plates 32 to move synchronously in opposite directions, realizing the rapid adjustment of the distance between the top clamps 2, and adapting to the positioning requirements of nickel-based alloy composite plates of different widths.

[0039] Reference Figure 10 As shown: The top of the movable seat 35 is provided with a second slider 351, and the top of the drive cavity is provided with a second slide rail 352 extending along the length direction of the lead screw 332. The second slider 351 and the second slide rail 352 are slidably engaged.

[0040] A second slider 351 is provided on the top of the movable seat 35, and a second slide rail 352 is adapted to be provided on the top of the drive cavity. The second slide rail 352 extends along the length of the lead screw 332 and forms a sliding engagement with the second slider 351. When the spacing adjustment mechanism 33 drives the plate 32 to move along the direction of the lead screw 332, the plate 32 drives the movable seat 35 to move synchronously through the first telescopic rod 36. At this time, the second slider 351 on the top of the movable seat 35 slides smoothly along the second slide rail 352, providing precise guidance and limiting for the movement of the movable seat 35, effectively constraining the movement trajectory of the movable seat 35, avoiding problems such as offset and jamming of the movable seat 35 during the movement with the plate 32, ensuring that the guide rod 34 always remains horizontal, ensuring the stable guidance and engagement of the guide rod 34 with the sliding groove 41 of the linkage rod 4, and at the same time, with the connecting effect of the first telescopic rod 36, making the synchronous movement of the movable seat 35 and the plate 32 smoother, further improving the stability and accuracy of the mechanical linkage of the entire device.

[0041] Reference Figure 7 and Figure 11 As shown: The processing table 1 has L-shaped side positioning plates 6 on both sides of its processing surface for limiting the side of the nickel-based alloy composite plate. The processing surface of the processing table 1 has a strip-shaped through groove 12 for the extension plate 61 to move. One side of the side positioning plate 6 is connected to an extension plate 61 that extends through the strip-shaped through groove 12 into the drive cavity. The end of the extension plate 61 away from the side positioning plate 6 is connected to a vertically arranged second telescopic rod 62. The end of the second telescopic rod 62 away from the extension plate 61 is connected to the corresponding flat plate 32. The movement of the flat plate 32 can synchronously drive the side positioning plate 6 to move.

[0042] L-shaped side positioning plates 6 are installed on both sides of the processing surface of the processing table 1. Utilizing their structural characteristics, they achieve precise positioning of the sides of the nickel-based alloy composite plate. Together with the top clamp 2, they form multi-directional positioning of the plate from the top, bottom, and sides, improving the positioning stability of the plate before welding. The side positioning plates 6 are connected to the corresponding flat plate 32 via an extension plate 61 and a second telescopic rod 62. When the spacing adjustment mechanism 33 drives the flat plate 32 to move along the direction of the lead screw 332 to adjust the spacing of the top clamp 2, the movement of the flat plate 32 is synchronously transmitted to the extension plate 61 via the vertical second telescopic rod 62, thereby driving the side positioning plates 62 to move. Positioning plate 6 moves synchronously with plate 32, realizing synchronous adjustment of the spacing between side positioning plates 6 and top clamp 2. This links the spacing adjustment of side positioning and top positioning, eliminating the need for separate adjustment of side positioning plates 6. The spacing adaptation of multi-directional positioning of the plate can be completed by a single spacing adjustment mechanism 33, adapting to the positioning requirements of nickel-based alloy composite plates of different widths. This further simplifies the adjustment process of the device, improves the efficiency and synchronicity of positioning adjustment, and at the same time, the multi-directional positioning constraint can effectively prevent the plate from shifting during welding, ensuring welding accuracy.

[0043] Reference Figure 3 , Figure 9 and Figure 10 As shown: The lifting mechanism 3 also includes a hydraulic cylinder 37 and four guide columns 38. The hydraulic cylinder 37 is located at the lower end of the drive cavity, and the output shaft of the hydraulic cylinder 37 is fixedly connected to the bottom of the lifting plate 31. The four guide columns 38 are vertically arranged at the edge of the lifting plate 31. The drive cavity is provided with guide sleeves 39 corresponding to each guide column 38. The guide columns 38 pass through the corresponding guide sleeves 39 and move along their limits.

[0044] During operation, hydraulic cylinder 37 is activated, and its output shaft extends and retracts, directly driving the lifting plate 31 to move vertically. During the movement of the lifting plate 31, the guide posts 38 on the four edges simultaneously slide vertically along the corresponding guide sleeves 39. Through the cooperation of the four sets of guide posts 38 and guide sleeves 39, the lifting trajectory of the lifting plate 31 is guided and constrained in all directions, effectively preventing tilting, deviation, or jamming during movement, ensuring that the lifting plate 31 always remains horizontal and performs stable linear lifting motion. This structure makes the lifting action of the lifting plate 31 more precise and stable, thereby ensuring the consistency and accuracy of the actions of subsequent linkage components such as the linkage rod 4 and the top clamp 2, providing a reliable driving foundation for the stability of the plate positioning.

[0045] Reference Figures 3 to 6 As shown: The top clamp 2 includes an adjusting block 21, a buffer sleeve 22, a buffer rod 23, a rubber pressure head 24, a spring 25, a threaded sleeve 26, and a locking nut 27; The upper end of the linkage rod 4 is provided with a strip-shaped opening 42, the buffer sleeve 22 passes through the strip-shaped opening 42, and its lower end is fixedly connected to the adjusting block 21. The top of the adjusting block 21 slides in contact with the lower surface of the upper end of the linkage rod 4, and the top two sides of the adjusting block 21 are provided with limiting blocks 211 extending along the length direction of the strip-shaped opening 42. The upper end of the linkage rod 4 is provided with a limiting groove 43 for the limiting block 211 to slide and cooperate. The threaded sleeve 26 is fixedly sleeved on the outside of the upper end of the buffer sleeve 22, and the locking nut 27 is threadedly connected to the threaded sleeve 26 and can abut against the outer side of the upper end of the linkage rod 4 away from the adjusting block 21. The buffer rod 23 is movably disposed inside the buffer sleeve 22, with one end extending toward the processing table 1 and fixedly connected to the rubber pressure head 24, and the other end provided with a buffer piston 231; The spring 25 is located inside the buffer sleeve 22, and one end of the spring 25 elastically abuts against the buffer piston 231.

[0046] The top clamp 2 achieves a combined positioning effect of adjustable position and elastic buffer through the cooperation of multiple components, which can adapt to the positioning and clamping requirements of nickel-based alloy composite plates of different thicknesses, while avoiding damage to the plate surface caused by hard contact. The strip-shaped opening 42 at the upper end of the linkage rod 4 provides installation and position adjustment space for the buffer sleeve 22. The top of the adjustment block 21 slides in contact with the lower surface of the linkage rod 4, and the limit blocks 211 on both sides slide in cooperation with the limit groove 43 of the linkage rod 4, forming the movement guide and circumferential limit of the buffer sleeve 22, ensuring that the buffer sleeve 22 can only move along the length direction of the strip-shaped opening 42, so as to achieve precise adjustment of the clamping position of the top clamp 2.

[0047] During adjustment, loosen the locking nut 27, push the buffer sleeve 22 to drive the adjusting block 21 to slide along the slot 42 until the rubber pressure head 24 is aligned with the position to be clamped on the plate. Then tighten the locking nut 27 so that it abuts against the outer side of the linkage rod 4. The position of the buffer sleeve 22 and the adjusting block 21 is fixed by the thread locking force, completing the position calibration of the top clamp 2. When the lifting plate 31 descends and drives the linkage rod 4 to drive the top clamp 2 to be positioned vertically downward, the rubber pressure head 24 first contacts the top of the plate. The plate generates a reverse force on the buffer rod 23, pushing the buffer rod 23 to retract into the buffer sleeve 22 and compress the internal spring 25. The elastic deformation of the spring 25 forms a buffer damping, transforming hard clamping into elastic clamping. This ensures the positioning clamping force on the plate and effectively buffers the clamping impact, preventing damage such as indentations and scratches on the surface of the nickel-based alloy composite plate. At the same time, the flexible contact of the rubber pressure head 24 further enhances the clamping protection effect.

[0048] Reference Figure 7 and Figure 9As shown: Push plates 13 are provided on both sides of the processing table 1. The push plates 13 are used to bring two nickel-based alloy composite plates to be welded together. The processing table 1 is also provided with electric push rods 14 that correspond one-to-one with the push plates 13. The output end of the electric push rod 14 is connected to the corresponding push plate 13 and is used to drive the push plate 13 to move along the processing surface.

[0049] Push plates 13 are provided on both sides of the processing table 1 and driven by electric push rods 14. After the two nickel-based alloy composite plates are placed on the processing surface, the electric push rods 14 on both sides start synchronously and drive the corresponding push plates 13 to move in opposite directions along the processing surface. The push plates 13 abut against the side of the composite plates and apply horizontal thrust to accurately bring the two composite plates together.

[0050] Reference Figures 1 to 11 The following is shown: A welding method for a welding apparatus for a nickel-based alloy composite plate, comprising the following steps: S1. Start the dual-axis motor 331 to drive the two flat plates 32 to move towards or away from each other, and synchronously adjust the distance between the top clamp 2 and the side positioning plate 6 to match the specifications of the nickel-based alloy composite plate to be welded. S2. Place the two composite plates to be welded on the processing surface of the processing table 1, start the electric push rod 14 to drive the push plate 13 to bring the two composite plates together and precisely connect them. S3. Start the hydraulic cylinder 37 to drive the lifting plate 31 to descend, which drives the linkage rod 4 to make the top clamp 2 move vertically downward, clamping and positioning the top of the composite plate. The side positioning plate 6 simultaneously limits the side of the composite plate. S4. Start the welding robot 5 above the processing table 1 to weld the joint of the two composite plates; S5. After welding is completed, hydraulic cylinder 37 drives lifting plate 31 to rise, causing top clamp 2 to open outward. Electric push rod 14 drives push plate 13 to reset, removes the welded composite plate, and the device returns to its initial state.

[0051] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A welding apparatus for nickel-based alloy composite plates, characterized in that, include: The processing table (1) has a processing surface for placing two nickel-based alloy composite plates to be welded, and the two nickel-based alloy composite plates to be welded can be mated on the processing surface. The processing table (1) also has a driving cavity. Top clamp (2), the top clamp (2) is set on both sides of the processing table (1) and is used to position and clamp the top of the two nickel-based alloy composite plates to be welded after docking; The lifting mechanism (3) is located in the drive cavity of the processing table (1). The lifting mechanism (3) includes a lifting plate (31) that can be lifted. A linkage rod (4) is provided between the lifting plate (31) and the top clamp (2). The lifting plate (31) has an initial state at a high position and a clamping state at a low position. When the lifting plate (31) is in the initial state at a high position, the linkage rod (4) drives all the top clamps (2) to remain open. When the lifting plate (31) moves from the high position to the low position and is in the clamping state at a low position, the linkage rod (4) drives all the top clamps (2) to move towards each other to position and clamp the top of the two nickel-based alloy composite plates to be welded after docking on the processing table (1). Welding robot (5), which is set above the processing table (1), is used to perform welding operations on two nickel-based alloy composite plates to be welded after being joined on the processing table (1).

2. The welding apparatus for a nickel-based alloy composite plate according to claim 1, characterized in that, Two symmetrically arranged flat plates (32) are provided above the lifting plate (31). A spacing adjustment mechanism (33) is provided between the two flat plates (32). The spacing adjustment mechanism (33) is used to drive the two flat plates (32) to move in opposite directions. The lower ends of the linkage rods (4) on both sides are rotatably connected to the corresponding flat plates (32). The movement of the flat plates (32) can synchronously adjust the spacing of the linkage rods (4) on the same side and the corresponding top clamps (2). A clearance opening (11) is provided on the processing table (1). The clearance opening (11) is used to avoid the movement of the linkage rods (4). The top clamps (2) are located at the upper end of the linkage rods (4).

3. The welding apparatus for a nickel-based alloy composite plate according to claim 2, characterized in that, The linkage rod (4) is in the shape of a "7". The lower end of the linkage rod (4) is rotatably connected to the top of the corresponding plate (32). The middle section of the linkage rod (4) is provided with a positioning groove (41). The positioning groove (41) includes an upper section that is vertically arranged and a lower section that is inclined inward. Guide rods (34) are provided on both sides of the drive cavity. The guide rods (34) pass through the sliding grooves (41) of all the linkage rods (4) on the corresponding side. Movable seats (35) are provided at both ends of the guide rods (34). The movable seats (35) can move together with the plate (32). A first telescopic rod (36) is connected between the movable seats (35) and the corresponding plate (32).

4. The welding apparatus for a nickel-based alloy composite plate according to claim 3, characterized in that, The spacing adjustment mechanism (33) includes a dual-axis motor (331) located at the top center of the lifting plate (31). The two shaft ends of the dual-axis motor (331) are respectively connected to lead screws (332) with opposite rotation directions. The lifting plate (31) is provided with bearing seats (333) on both sides. The end of the lead screw (332) is rotatably connected to the corresponding bearing seat (333). Each lead screw (332) is fitted with a lead screw sleeve (334). The lead screw sleeve (334) is fixedly connected to the corresponding plate (32) through a connecting plate (335). The bottom of the plate (32) is provided with a first slider (321). The top of the lifting plate (31) is provided with a first slide rail (322) extending along the length direction of the lead screw (332). The first slider (321) and the first slide rail (322) slide together.

5. The welding apparatus for a nickel-based alloy composite plate according to claim 4, characterized in that, The top of the movable seat (35) is provided with a second slider (351), and the top of the drive cavity is provided with a second slide rail (352) extending along the length direction of the lead screw (332). The second slider (351) and the second slide rail (352) are slidably engaged.

6. The welding apparatus for a nickel-based alloy composite plate according to claim 4, characterized in that, The processing table (1) has L-shaped side positioning plates (6) on both sides of the processing surface for limiting the side of the nickel-based alloy composite plate. The processing surface of the processing table (1) has a strip-shaped through groove (12) for the extension plate (61) to move. One side of the side positioning plate (6) is connected to an extension plate (61) that extends through the strip-shaped through groove (12) into the drive cavity. The end of the extension plate (61) away from the side positioning plate (6) is connected to a vertically arranged second telescopic rod (62). The end of the second telescopic rod (62) away from the extension plate (61) is connected to the corresponding flat plate (32). The movement of the flat plate (32) can synchronously drive the side positioning plate (6) to move.

7. The welding apparatus for a nickel-based alloy composite plate according to claim 1, characterized in that, The lifting mechanism (3) further includes a hydraulic cylinder (37) and four guide columns (38). The hydraulic cylinder (37) is located at the lower end of the drive cavity, and the output shaft of the hydraulic cylinder (37) is fixedly connected to the bottom of the lifting plate (31). The four guide columns (38) are vertically arranged at the edge of the lifting plate (31). The drive cavity is provided with guide sleeves (39) corresponding to each guide column (38). The guide column (38) passes through the corresponding guide sleeve (39) and moves along its limit.

8. The welding apparatus for a nickel-based alloy composite plate according to claim 3, characterized in that, The top clamp (2) includes an adjusting block (21), a buffer sleeve (22), a buffer rod (23), a rubber pressure head (24), a spring (25), a threaded sleeve (26), and a locking nut (27). The upper end of the linkage rod (4) is provided with a strip-shaped opening (42), the buffer sleeve (22) passes through the strip-shaped opening (42), and its lower end is fixedly connected to the adjusting block (21). The top of the adjusting block (21) slides in contact with the lower surface of the upper end of the linkage rod (4), and the top sides of the adjusting block (21) are provided with limiting blocks (211) extending along the length direction of the strip-shaped opening (42). The upper end of the linkage rod (4) is provided with a limiting groove (43) for the limiting block (211) to slide in cooperation. The threaded sleeve (26) is fixedly sleeved on the outside of the upper end of the buffer sleeve (22), and the locking nut (27) is threadedly connected to the threaded sleeve (26) and can abut against the outer side of the upper end of the linkage rod (4) away from the adjusting block (21). The buffer rod (23) is movably disposed inside the buffer sleeve (22), with one end extending toward the processing table (1) and fixedly connected to the rubber pressure head (24), and the other end is provided with a buffer piston (231). The spring (25) is located inside the buffer sleeve (22), and one end of the spring (25) is elastically abutting against the buffer piston (231).

9. The welding apparatus for a nickel-based alloy composite plate according to claim 1, characterized in that, The processing table (1) is provided with push plates (13) on both sides. The push plates (13) are used to bring two nickel-based alloy composite plates to be welded together. The processing table (1) is also provided with electric push rods (14) that correspond one-to-one with the push plates (13). The output end of the electric push rod (14) is connected to the corresponding push plate (13) and is used to drive the push plate (13) to move along the processing surface.

10. A welding method for a welding apparatus for nickel-based alloy composite plates, characterized in that, A welding apparatus for use with the nickel-based alloy composite plate according to any one of claims 1-9, comprising the following steps: S1. Start the dual-axis motor (331) to drive the two flat plates (32) to move towards each other or away from each other, and synchronously adjust the distance between the top clamp (2) and the side positioning plate (6) to match the specifications of the nickel-based alloy composite plate to be welded. S2. Place the two composite plates to be welded on the processing surface of the processing table (1), start the electric push rod (14) to drive the push plate (13) to bring the two composite plates together and precisely connect them; S3. Start the hydraulic cylinder (37) to drive the lifting plate (31) to descend, and drive the linkage rod (4) to make the top clamp (2) move vertically downward, clamp and position the top of the composite plate, and the side positioning plate (6) simultaneously limits the side of the composite plate. S4. Start the welding robot (5) above the processing table (1) to weld the joint of the two composite plates; S5. After welding is completed, the hydraulic cylinder (37) drives the lifting plate (31) to rise, which in turn drives the top clamp (2) to open outward. The electric push rod (14) drives the push plate (13) to reset, removes the welded composite plate, and restores the device to its initial state.

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