Intelligent laser welding device for ship block manufacturing

Abstract

The application discloses a kind of intelligent laser welding devices for ship section manufacturing, it is related to intelligent laser welding technical field, including chassis and welding station being installed on the chassis, the intelligent laser welding device for ship section manufacturing further includes: preliminary mechanism, installation is positioned on the chassis, so that before the arrival laser processing area of station is stopped, laser head is moved in space by three-axis machine base, so that laser welding is carried out to ship metal workpiece, and reciprocating movement is driven by linear slide platform to drive workpiece to enter or output, and before moving seat enters laser head processing area, it is limited by so-called limiting mechanism, avoid when not placing metal workpiece, lead to that moving seat slides into laser head processing area in advance by the error driving of screw rod in linear slide platform, external force touch, eliminate mechanical interference collision with three-axis machine base, laser head, protect laser welding equipment safety.

Description

Technical Field

[0001] This invention relates to the field of intelligent laser welding technology, specifically to an intelligent laser welding device for ship section manufacturing. Background Technology

[0002] In ship section manufacturing, the welding of large metal ship plate components has long relied on manual positioning, which can no longer meet the needs of modern shipbuilding industry for automated and intelligent production. Existing laser welding equipment for ship sections has obvious shortcomings in terms of equipment safety operation. The starting point of the workpiece entering the laser welding processing area is not fixed, and the weld alignment deviation is large, which affects the consistency and forming quality of laser welding. At the same time, the moving seat is prone to accidentally move into the welding torch working area, which poses a safety hazard of mechanical collision with the three-axis machine base and laser head, and damages precision optical components.

[0003] The existing technical solutions have obvious limitations in practice: there may be safety hazards such as the loading station being accidentally fed into the laser head and other components, and the positioning accuracy and operational safety of the overall device cannot be effectively guaranteed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an intelligent laser welding device for ship section manufacturing, which solves the safety hazards mentioned in the background art, such as the potential for mechanical collisions between the loading station and components like the laser head, and the inability to effectively guarantee the positioning accuracy and operational safety of the overall device.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intelligent laser welding device for ship section manufacturing, comprising a base frame and a welding station mounted on the base frame. The intelligent laser welding device for ship section manufacturing further comprises: a preparatory mechanism mounted on the base frame, which is limited and stopped before the workstation reaches the laser processing area; the preparatory mechanism comprises a linear slide table mounted on the base frame, the linear slide table having a movable seat driven by a lead screw to achieve linear reciprocating movement and a grid plate mounted on the movable seat, the middle part of the grid plate being a solid closed structure, the solid middle part of the grid plate being used to support and place the workpiece to be welded; a sliding seat slidably mounted on the grid plate, a drive plate mounted on the sliding seat, a collection frame slidably mounted inside the movable seat, a limiting groove formed in the collection frame, a sliding rod slidably mounted on the movable seat, an auxiliary seat assisting the movement of the movable seat, a limiting strip mounted on the auxiliary seat, a guide rod mounted on the base frame, a sliding rod slidably mounted on the guide rod, and a positioning block slidably mounted on the sliding rod.

[0006] According to the above technical solution, a first spring is provided between the sliding seat and the grid plate, which drives the sliding seat to reset. A second spring is provided between the sliding rod and the moving seat, which drives the sliding rod to reset. A third spring is provided between the sliding rod and the guide rod, which drives the sliding rod to reset. The contact surface between the positioning block and the limiting strip is set as an inclined surface. A fourth spring is provided between the positioning block and the sliding rod, which drives the positioning block to reset.

[0007] According to the above technical solution, the preparation mechanism also includes a three-axis machine base installed on the welding station, which can drive the laser head to perform spatial displacement, and the laser head is installed at the output end of the three-axis machine base.

[0008] In the above embodiments, this solution sets up a gantry-type welding station on the base frame, and a three-axis machine base drives the laser head to move in space to perform laser welding on the ship metal workpiece. The ship metal workpiece is placed in the solid area in the middle of the grating plate. The solid area in the middle of the grating plate is used to support the workpiece to be welded, and the other hollow areas of the grating plate are used to collect the welding slag generated during welding. The welding slag falls through the hollow positions and is collected by the collection frame. The linear slide table drives the moving seat to move back and forth to move the workpiece in or out. Before the moving seat enters the laser head processing area, it is restricted by a so-called limiting mechanism.

[0009] According to the above technical solution, the intelligent laser welding device for ship section manufacturing also includes a clamping mechanism and a protective mechanism; the clamping mechanism is installed on the movable seat and is used to support the bottom of the workpiece to be welded after it is suspended and clamped; the protective mechanism is installed on the movable seat and is used to automatically shield the area around the welding area during laser welding.

[0010] According to the above technical solution, the clamping mechanism includes a hydraulic rod mounted on a movable seat for driving the clamping plate to clamp, the clamping plate is mounted on the output end of the hydraulic rod, an abutment rod is slidably mounted on a sliding seat, and a receiving plate is mounted on the abutment rod; the clamping plate is provided with an anti-slip groove; a No. 5 spring is provided between the abutment rod and the sliding seat, and the abutment rod is reset by the No. 5 spring.

[0011] In the above embodiment, the workpiece is placed on the lifting block at the receiving plate, thereby pressing down the abutment rod by gravity, and the abutment rod presses down the sliding seat to complete the linkage operation. The hydraulic rod drives the clamping plate with anti-slip groove to clamp the ship metal workpiece from the left and right sides.

[0012] According to the above technical solution, the clamping mechanism further includes a guide rod one mounted on the receiving plate to guide the trapezoidal block, the trapezoidal block being slidably mounted on the guide rod one, a guide rod two mounted on the receiving plate to guide the lifting block, the lifting block being slidably mounted on the guide rod two, a flexible pad mounted on the lifting block, and an extension plate slidably mounted in the clamping plate; a No. 6 spring is provided between the extension plate and the clamping plate, and the No. 6 spring drives the extension plate to reset.

[0013] According to the above technical solution, the contact surface between the trapezoidal block and the lifting block is set as an inclined surface, and the contact surface between the lifting block and the trapezoidal block is set as an inclined surface; a No. 7 spring is provided between the trapezoidal block and the guide rod, and the trapezoidal block is reset by the No. 7 spring.

[0014] In the above embodiment, by setting four lifting blocks and supporting the bottom of the workpiece with a flexible pad, when facing an uneven situation, the bottom of the workpiece contacts the flexible pad, causing the lifting block to move downward along the second guide rod. Through the contact between its inclined surface and the inclined surface of the trapezoidal block, the vertical pressure is decomposed into a horizontal clamping force and a vertical bonding force, so that the trapezoidal block moves along the first guide rod, and the lifting block automatically adjusts its height according to the unevenness of the workpiece surface, and always drives the flexible pad to be in contact with the workpiece surface.

[0015] According to the above technical solution, the protective mechanism includes a mounting plate that is detachably installed inside the movable seat and a baffle that is slidably installed inside the mounting plate; an eighth spring is provided between the baffle and the mounting plate, and the baffle is reset by the eighth spring.

[0016] According to the above technical solution, the protective mechanism further includes a receiving plate installed on the baffle and a trigger button installed on the extension plate; the contact surface between the receiving plate and the trigger button is set as an inclined surface.

[0017] In the above embodiment, when the material is not clamped, the baffle is retracted and stored inside the side mounting plate of the grid plate by the trigger button connected by the extension plate against the inclined surface of the receiving plate. After the clamping is in place, the extension plate first contacts the workpiece, causing the extension plate to move under force and stretch the No. 6 spring. The movement of the extension plate drives the trigger button to move, so that the receiving plate gradually moves upward after being reset by the No. 8 spring due to the inclined surface setting, and finally surrounds and blocks the grid plate.

[0018] According to the above technical solution, the protective mechanism further includes a mounting groove on the movable base, a slot on the mounting plate, and a locking block slidably installed in the mounting groove; a No. 9 spring is provided between the locking block and the mounting groove, and the locking block is reset by the No. 9 spring; the locking block matches the slot of the slot; the contact surface between the locking block and the mounting plate is set as an inclined surface.

[0019] In the above embodiments, when the baffle needs to be cleaned, slag and rust removed, the locking block is pulled outward to disengage it from the slot, and the mounting plate can be taken out normally. During installation, the mounting plate is directly inserted into the preset installation position. After contacting the inclined surface of the locking block, it is moved back along the installation slot to avoid it. Then, the locking block is reset by the No. 9 spring and inserted into the slot to complete the installation of the mounting plate.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, a gantry-type welding station is set up on the base frame, and the laser head is moved in space by a three-axis machine base to perform laser welding on ship metal workpieces. A linear slide table drives the moving seat to move back and forth to move the workpiece in or out. Before the moving seat enters the laser head processing area, it is restricted by a so-called limiting mechanism to avoid the lead screw in the linear slide table being accidentally driven or external force touching it, causing the moving seat to slide into the laser head processing area in advance when no metal workpiece is placed. This eliminates mechanical interference and collision with the three-axis machine base and laser head, protecting the safety of the laser welding equipment. The drawer-type collection frame can be freely pulled out before the workpiece is placed for easy cleaning and maintenance of welding slag. After the metal workpiece is placed, it is automatically locked by its own weight linkage to avoid the collection frame being affected by external force during the welding process, which could lead to slippage, accidental extraction, and slag leakage. This ensures stable collection of welding slag during laser welding operations.

[0021] 2. In this invention, the workpiece is placed on the lifting block at the receiving plate. Gravity presses down the contact rod, which in turn presses down the sliding seat to complete the linkage operation. A hydraulic rod drives the clamping plate with anti-slip grooves to clamp the ship metal workpiece from both sides, making the workpiece in a suspended clamping state. However, the workpiece has characteristics such as rolling unevenness on the bottom surface, plate unevenness, and problems such as deflection in the middle and warping due to thermal deformation caused by the suspended clamping on both sides. To address this, four lifting blocks are set, and flexible pads are used to support the bottom of the workpiece. When facing unevenness, the inclined contact of the trapezoidal block decomposes the vertical pressure into horizontal clamping force and vertical contact force, so that the trapezoidal block moves along the guide rod, and the lifting block automatically adjusts its height according to the unevenness of the workpiece surface, and always keeps the flexible pad in contact with the workpiece surface, effectively reducing the welding deformation caused by the thermal stress of laser welding.

[0022] 3. In this invention, when the material is not clamped, the baffle is retracted and stored inside the mounting plate on the side of the grating plate, without occupying the loading and unloading space or interfering with the placement and removal of the workpiece. After the material is clamped in place, the baffle surrounds and shields the grating plate, preventing debris, dust, and slag generated during the clamping operation from splashing outwards, keeping the ground and work area around the equipment clean, reducing pollution and cleaning workload. The quick installation and disassembly of the baffle allows for quick and individual replacement after wear, deformation, or aging. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the linear slide and the base frame of the present invention; Figure 3 This is a schematic diagram of the structure at the positions of the grille plate and the movable seat in this invention; Figure 4 This is a schematic diagram of the structure at the positions of the grating plate and the sliding seat in this invention; Figure 5 This is a schematic diagram of the structure at the positions of the linear slide and the movable seat of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of section A of the structure; Figure 7 This is a schematic diagram of the structure at the positions of the abutment rod and the sliding seat of the present invention; Figure 8 This is a schematic diagram of the structure at the position of the lifting block and the clamping plate of the present invention; Figure 9 This is a schematic diagram of the structure at the positions of the mounting plate and extension plate of the present invention; Figure 10 For the present invention Figure 9 An enlarged schematic diagram of the structure of part B in the middle section.

[0024] The meanings of the labels in the diagram are as follows: 1. Base frame; 2. Welding station; 3. Three-axis base; 4. Laser head; 5. Linear slide; 6. Moving seat; 7. Grating plate; 8. Sliding seat; 9. Drive plate; 10. Collection frame; 11. Limiting groove; 12. Sliding rod; 13. Auxiliary seat; 14. Limiting strip; 15. Guide rod; 16. Sliding rod; 17. Positioning block; 20. Hydraulic rod; 21. Clamping plate; 22. Abutting rod; 23. Receiving plate; 24. Guide rod one; 25. Trapezoidal block; 26. Guide rod two; 27. Lifting block; 28. Flexible pad; 29. ​​Extension plate; 30. Mounting plate; 31. Baffle; 32. Receiving plate; 33. Trigger button; 34. Mounting groove; 35. Slot; 36. Locking block. Detailed Implementation

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

[0026] Example 1: Please see Figures 1-10 One embodiment of the present invention is: an intelligent laser welding device for ship section manufacturing, including a base frame 1 and a welding station 2 mounted on the base frame 1. The intelligent laser welding device for ship section manufacturing further includes: a preparatory mechanism mounted on the base frame 1, which limits and stops the welding station before it reaches the laser processing area; the preparatory mechanism includes a linear slide 5 mounted on the base frame 1, a movable seat 6 driven by a lead screw to achieve linear reciprocating movement on the linear slide 5, and a grid plate 7 mounted on the movable seat 6, the middle part of the grid plate 7 being a solid closed structure. The grating plate 7 is solid in the middle and is used to support the workpiece to be welded; the sliding seat 8 is slidably mounted on the grating plate 7, the drive plate 9 is mounted on the sliding seat 8, the collection frame 10 is slidably mounted inside the movable seat 6, the limiting groove 11 is opened in the collection frame 10, the sliding rod 12 is slidably mounted on the movable seat 6, the auxiliary seat 13 assists the movement of the movable seat 6, the limiting strip 14 is mounted on the auxiliary seat 13, the guide rod 15 is mounted on the base frame 1, the sliding rod 16 is slidably mounted on the guide rod 15, and the positioning block 17 is slidably mounted on the sliding rod 16.

[0027] A first spring is provided between the sliding seat 8 and the grid plate 7, which drives the sliding seat 8 to reset. A second spring is provided between the sliding rod 12 and the movable seat 6, which drives the sliding rod 12 to reset. A third spring is provided between the sliding rod 16 and the guide rod 15, which drives the sliding rod 16 to reset. The contact surface between the positioning block 17 and the limiting strip 14 is set as an inclined surface. A fourth spring is provided between the positioning block 17 and the sliding rod 16, which drives the positioning block 17 to reset.

[0028] The preparatory mechanism also includes a three-axis base 3 installed on the welding station 2, which can drive the laser head 4 to perform spatial displacement. The laser head 4 is installed at the output end of the three-axis base 3.

[0029] In the above embodiments, when no metal workpiece is placed, the lead screw in the linear slide 5 is not misdriven or touched by external force, which may cause the moving seat 6 to slide into the processing area of ​​the laser head 4 in advance, thus preventing mechanical interference and collision with the three-axis base 3 and the laser head 4 and protecting the safety of the laser welding equipment.

[0030] The intelligent laser welding device for ship section manufacturing also includes a clamping mechanism and a protective mechanism; the clamping mechanism is installed on the movable seat 6 and is used to support the bottom of the workpiece to be welded after it is suspended and clamped; the protective mechanism is installed on the movable seat 6 and is used to automatically shield the area around the welding area during laser welding.

[0031] In this embodiment, the following steps are taken: A gantry-type welding station 2 is set up on the base frame 1, and the laser head 4 is moved spatially by the three-axis machine base 3 to perform laser welding on the ship metal workpiece. The ship metal workpiece is placed in the solid area in the middle of the grating plate 7. The solid middle area of ​​the grating plate 7 is used to support the workpiece to be welded, and the remaining hollow areas of the grating plate 7 are used to collect the welding slag. The welding slag falls through the hollow positions and is collected by the collection frame 10. The linear slide table 5 drives the moving seat 6 to move back and forth to move the workpiece in or out. Before the moving seat 6 enters the processing area of ​​the laser head 4, it is restricted by a so-called limiting mechanism to prevent the linear slide table 5 from moving when no metal workpiece is placed. Misoperation of the lead screw or external force causes the movable seat 6 to slide prematurely into the processing area of ​​the laser head 4, preventing mechanical interference and collision with the three-axis base 3 and the laser head 4, thus protecting the safety of the laser welding equipment. Specifically, when the workpiece is not placed, the collection frame 10 can be pulled out normally to handle the welding slag. At the same time, the auxiliary seat 13 on the linear slide 5, which assists the movement of the movable seat 6, is restricted in displacement by the non-sloping surface of the positioning block 17 through the lower limit strip 14, preventing the movable seat 6 from being normally driven by the lead screw. After the workpiece is placed, its gravity causes the sliding seat 8 to move downwards. The movement of the sliding seat 8 synchronously drives the drive plate 9 to move, pulling the first spring. The drive plate 9 eventually moves and contacts the slide rod. When slide bar 12 moves, slide seat 8 inserts into limiting groove 11, preventing collection frame 10 from being completely pulled out. Drawer-type collection frame 10 can be freely pulled out before workpiece placement for easy slag cleaning and maintenance. After metal workpiece is placed, it automatically locks itself due to its own weight, preventing slippage, accidental extraction, and slag leakage caused by external forces during welding, ensuring stable slag collection during laser welding. When slide bar 12 moves, it contacts slide bar 16, causing slide bar 16 to move downwards along guide bar 15. Simultaneously, slide bar 16 moves, causing positioning block 17 to move synchronously, disengaging from limiting bar 14. At this point, moving seat 6 is released and can move normally. The linear slide table 5 moves, and after the moving seat 6 enters the working range, each component is reset by its respective spring. After the moving seat 6 is reset, the limiting bar 14 presses the inclined surface of the positioning block 17, generating a vertical component force and compressing the fourth spring, causing the positioning block 17 to automatically retract and avoid. When the limiting bar 14 is in place, the positioning block 17 automatically rebounds and resets under the elastic force of the fourth spring, driving the positioning block 17 to insert into the limiting bar 14 to achieve wedge-tight limiting and locking, realizing self-weight sensing mechanical intelligent unlocking: the initial position of the moving seat 6 is locked by the limiting mechanism. After the workpiece is placed, the sliding seat 8 is automatically pressed down and the limiting is released in linkage, without the need for electrical control sensing or manual insertion and removal of the limiting.

[0032] Example 2: Please see Figures 1-10Based on the above embodiments, in another embodiment of the present invention, the clamping mechanism includes a hydraulic rod 20 mounted on the movable seat 6 for driving the clamping plate 21 to perform clamping. The clamping plate 21 is mounted on the output end of the hydraulic rod 20, an abutment rod 22 slidably mounted on the sliding seat 8, and a receiving plate 23 mounted on the abutment rod 22. The clamping plate 21 is provided with an anti-slip groove. A No. 5 spring is provided between the abutment rod 22 and the sliding seat 8, and the abutment rod 22 is reset by the No. 5 spring.

[0033] In the above embodiments, the protective groove increases the friction with the side of the metal workpiece, making it less prone to slippage and slippage during suspended clamping, and ensuring stable clamping.

[0034] The clamping mechanism also includes a guide rod 24 mounted on the receiving plate 23 to guide the trapezoidal block 25, a guide rod 26 mounted on the receiving plate 23 to guide the lifting block 27, a flexible pad 28 mounted on the lifting block 27, and an extension plate 29 mounted in the clamping plate 21. A No. 6 spring is provided between the extension plate 29 and the clamping plate 21, and the extension plate 29 is reset by the No. 6 spring.

[0035] The contact surface between the trapezoidal block 25 and the lifting block 27 is set as an inclined surface, and the contact surface between the lifting block 27 and the trapezoidal block 25 is set as an inclined surface; a No. 7 spring is provided between the trapezoidal block 25 and the guide rod 24, and the trapezoidal block 25 is reset by the No. 7 spring.

[0036] In the above embodiments, the heavy metal workpiece is not suspended and clamped on both sides, which would cause the middle to deflect and warp, and the rigid support would not cause local stress deformation of the metal plate surface, thus protecting the shape accuracy of the metal workpiece.

[0037] In this embodiment, during operation: the workpiece is placed on the lifting block 27 at the receiving plate 23, thereby pressing down the contact rod 22 by gravity, which in turn presses down the sliding seat 8 to complete the linkage operation. The hydraulic rod 20 drives the clamping plate 21 with anti-slip grooves to clamp the ship metal workpiece from both sides, making the workpiece in a suspended clamping state. However, the workpiece has characteristics such as rolling unevenness on the bottom surface and uneven plate surface, as well as problems such as deflection in the middle and warping due to thermal deformation caused by being suspended clamped on both sides. To address this, four lifting blocks 27 are set up. The workpiece bottom is supported by the flexible pad 28. When the workpiece bottom contacts the flexible pad 28, the lifting block 27 is forced to move downward along the guide rod 26. The vertical pressure is decomposed into horizontal clamping force and vertical contact force through the contact between the inclined surface of the lifting block 27 and the inclined surface of the trapezoidal block 25. This causes the trapezoidal block 25 to move along the guide rod 24, while the lifting block 27 automatically adjusts its height according to the unevenness of the workpiece surface and always drives the flexible pad 28 to be in contact with the workpiece surface, effectively reducing the welding deformation caused by the thermal stress of laser welding.

[0038] Example 3: Please see Figures 1-10 Based on the above embodiments, in another embodiment of the present invention, the protective mechanism includes a mounting plate 30 detachably installed inside the movable seat 6 and a baffle 31 slidably installed inside the mounting plate 30; an eighth spring is provided between the baffle 31 and the mounting plate 30, and the baffle 31 is reset by the provided eighth spring.

[0039] The protective mechanism also includes a receiving plate 32 mounted on the baffle 31 and a trigger button 33 mounted on the extension plate 29; the contact surfaces of the receiving plate 32 and the trigger button 33 are set as bevels.

[0040] In the above embodiments, debris, dust, and slag generated during clamping operations are prevented from splashing outwards, keeping the ground and workstations around the equipment clean and reducing pollution and cleaning workload.

[0041] The protective mechanism also includes a mounting groove 34 on the movable base 6, a slot 35 on the mounting plate 30, and a locking block 36 slidably installed in the mounting groove 34; a No. 9 spring is provided between the locking block 36 and the mounting groove 34, and the locking block 36 is reset by the No. 9 spring; the locking block 36 matches the groove of the slot 35; the contact surface between the locking block 36 and the mounting plate 30 is set as an inclined surface.

[0042] In the above embodiments, the baffle 31 can be replaced quickly and individually after it is worn, deformed, or aged.

[0043] In this embodiment, during operation: baffles 31, supported by springs No. 8, are set around the perimeter of the grid plate 7 within the mounting plate 30. When not clamped, the baffles 31, connected to the extension plate 29 and triggered by the trigger button 33, abut against the inclined surface of the receiving plate 32 and are retracted into the mounting plate 30 on the side of the grid plate 7. This does not occupy loading / unloading space, does not interfere with the insertion and removal of workpieces, does not bump the workpieces, and does not affect the loading and unloading process. After clamping, the extension plate 29 first contacts the workpiece, causing the extension plate 29 to move under force and stretch the spring No. 6. The movement of the extension plate 29 drives the trigger button 33 to move, causing the receiving plate 32, due to its inclined surface, to gradually move upward after being reset by the spring No. 8, ultimately clamping the grid plate 7. The grid plate 7 is surrounded and shielded to prevent debris, dust, and slag generated during clamping operations from splashing outwards, keeping the ground and work area around the equipment clean and reducing pollution and cleaning workload. When the baffle plate 31 needs to be cleaned, slag and rust removed, the locking block 36 is pulled outwards to disengage from the slot 35, at which point the mounting plate 30 can be removed normally. During installation, the mounting plate 30 is directly inserted into the preset installation position. After contacting the inclined surface of the locking block 36, it is moved back along the mounting groove 34 to avoid it. Then, the locking block 36 is reset by the No. 9 spring and inserted into the slot 35 to complete the installation of the mounting plate 30. The baffle plate 31 can be quickly replaced separately after wear, deformation and aging.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent laser welding device for ship section manufacturing, comprising a base frame (1) and a welding station (2) mounted on the base frame (1), characterized in that, The device also includes: a preparatory mechanism, a clamping mechanism, and a protective mechanism; The preparatory mechanism is mounted on the base frame (1) so that it is stopped before reaching the laser processing area at the workstation; The preparatory mechanism includes a linear slide (5) mounted on the base frame (1), a movable seat (6) driven by a screw to achieve linear reciprocating movement and a grid plate (7) mounted on the movable seat (6), the hollow area of ​​the grid plate (7) is used to receive the welding slag generated by welding, and the solid middle part of the grid plate (7) is used to support and place the workpiece to be welded. The preparatory mechanism further includes: a sliding seat (8) that slides up and down on the grid plate (7), a drive plate (9) that is mounted on the sliding seat (8), a collection frame (10) that slides inside the movable seat (6), a limiting groove (11) opened in the collection frame (10), a slide rod (12) that slides on the movable seat (6), an auxiliary seat (13) that assists the movable seat (6) in moving, a limiting strip (14) that is mounted on the auxiliary seat (13), a guide rod (15) that is mounted on the base frame (1), a sliding rod (16) that slides on the guide rod (15), and a positioning block (17) that slides on the sliding rod (16). A first spring is provided between the sliding seat (8) and the grid plate (7), a second spring is provided between the sliding rod (12) and the moving seat (6), a third spring is provided between the sliding rod (16) and the guide rod (15), the contact surface between the positioning block (17) and the limiting strip (14) is set as an inclined surface, and a fourth spring is provided between the positioning block (17) and the sliding rod (16). The clamping mechanism is mounted on the movable seat (6) and is used to support the bottom of the workpiece to be welded after it is suspended and clamped. The clamping mechanism includes a hydraulic rod (20) mounted on a movable seat (6) for driving the clamping plate (21) to clamp. The clamping plate (21) is mounted on the output end of the hydraulic rod (20). The clamping mechanism also includes an abutment rod (22) slidably mounted on a sliding seat (8), a receiving plate (23) mounted on the abutment rod (22), and a lifting block (27) mounted on the receiving plate (23). A No. 5 spring is provided between the abutment rod (22) and the sliding seat (8), and the abutment rod (22) is reset by the No. 5 spring. When no workpiece to be welded is placed on the lifting block (27), the collecting frame (10) can be pulled out freely, and the limiting strip (14) is displaced by the non-sloping surface of the positioning block (17), so that the moving seat (6) cannot be normally driven by the lead screw. After the workpiece to be welded is placed on the lifting block (27), the workpiece to be welded causes the sliding seat (8) to move downwards by its gravity and drives the drive plate (9) to move. At the same time, the first spring is pulled, and the drive plate (9) is inserted into the limiting groove (11), so that the collection frame (10) cannot be completely pulled out normally. The movement of the drive plate (9) causes the slide rod (12) to move. The movement of the slide rod (12) will contact the slide rod (16), so that the slide rod (16) is subjected to force and moves downwards along the guide rod (15). At the same time as the slide rod (16) moves, it drives the positioning block (17) to move synchronously, so that the positioning block (17) is separated from the limiting strip (14). The moving seat (6) can move normally with the linear slide (5). The protective mechanism is installed on the movable seat (6) and is used to automatically shield the area around the welding area during laser welding. The protective mechanism includes a mounting plate (30) that is detachably installed inside the movable seat (6) and a baffle (31) that is slidably installed inside the mounting plate (30). An eighth spring is provided between the baffle (31) and the mounting plate (30).

2. The intelligent laser welding device for ship section manufacturing according to claim 1, characterized in that: The preparatory mechanism also includes a three-axis base (3) installed on the welding station (2) that can drive the laser head (4) to perform spatial displacement. The laser head (4) is installed at the output end of the three-axis base (3).

3. The intelligent laser welding device for ship section manufacturing according to claim 1, characterized in that: The clamping mechanism also includes a guide rod 1 (24) installed on the receiving plate (23) to guide the trapezoidal block (25), a guide rod 2 (26) installed on the receiving plate (23) to guide the lifting block (27), a flexible pad (28) installed on the lifting block (27), and an extension plate (29) slidably installed in the clamping plate (21). The trapezoidal block (25) is slidably mounted on the first guide rod (24), and the lifting block (27) is slidably mounted on the second guide rod (26); A No. 6 spring is provided between the extension plate (29) and the clamping plate (21).

4. The intelligent laser welding device for ship section manufacturing according to claim 3, characterized in that: The contact surface between the trapezoidal block (25) and the lifting block (27) is set as an inclined surface; A No. 7 spring is provided between the trapezoidal block (25) and the guide rod (24), and the trapezoidal block (25) is reset by the No. 7 spring.

5. The intelligent laser welding device for ship section manufacturing according to claim 3, characterized in that: The protective mechanism also includes a receiving plate (32) mounted on the baffle (31) and a trigger button (33) mounted on the extension plate (29). The contact surface between the receiving plate (32) and the trigger button (33) is set as an inclined surface; When the workpiece to be welded is not clamped, the trigger button (33) on the extension plate (29) abuts against the inclined surface of the receiving plate (32), and the baffle (31) is retracted and stored inside the mounting plate (30) on the side of the grid plate (7). After the workpiece to be welded is clamped in place, the extension plate (29) first contacts the workpiece to be welded, causing the extension plate (29) to move under force and stretch the No. 6 spring. The movement of the extension plate (29) drives the trigger button (33) to move, causing the receiving plate (32) to gradually move upward after being reset by the No. 8 spring due to the inclined surface setting, and finally surrounds and blocks the grid plate (7) on all sides.

6. The intelligent laser welding device for ship section manufacturing according to claim 1, characterized in that: The protective mechanism also includes a mounting slot (34) on the movable base (6), a slot (35) on the mounting plate (30), and a locking block (36) slidably mounted in the mounting slot (34). A No. 9 spring is provided between the card block (36) and the mounting groove (34); The card block (36) matches the slot opened in the card slot (35); The contact surface between the card block (36) and the mounting plate (30) is set as an inclined surface.

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