A laser welding device for stainless steel welded pipes

Abstract

The application discloses a kind of stainless steel welded pipe laser welding devices, it is related to stainless steel welded pipe laser welding technical field, including support table, the support table is sequentially provided with left clamping mechanism, laser welding mechanism and right clamping mechanism from left to right, and right clamping mechanism is provided with feeding mechanism.Upper feeding mechanism includes the sliding seat and concentric component of being set on right clamping mechanism, and feeding assembly is commonly provided on sliding seat, concentric component.The advantages are: by batch feeding to sealing plate, automatic one by one blanking, avoid relying on artificial taking and placing, eliminate the influence of human factors (such as fatigue, proficiency) on production rhythm, and in the process of blanking, continuous guidance in vertical direction ensures the vertical blanking angle;After blanking, adjust the concentricity in the circumferential direction to ensure concentricity with stainless steel welded pipe;And feeding, blanking, welding process automation, strong continuity, good welding quality.

Description

Technical Field

[0001] This invention relates to the field of laser welding technology for stainless steel welded pipes, and more particularly to a laser welding device for stainless steel welded pipes. Background Technology

[0002] Stainless steel welded pipes are steel pipes made by rolling stainless steel plates or strips into shape and then welding them using processes such as argon arc welding or laser welding. Stainless steel welded pipes are commonly used in fluid transportation and structural applications. Depending on the application, stainless steel welded pipes have different sealing requirements, and welding the ends of stainless steel welded pipes is a high-strength, permanent sealing method.

[0003] Welding sealing involves directly welding a sealing plate (a thin, circular stainless steel sheet) with the same outer diameter as the pipe to the end of the stainless steel welded pipe using argon arc welding or laser welding. Common laser welding devices for stainless steel welded pipes include roller type and chuck type. The former uses a three-point roller assembly to limit the stainless steel welded pipe and sealing plate circumferentially, using friction to rotate them for circumferential welding. The latter is an upgrade to the former, where the stainless steel welded pipe is manually inserted into the chuck fixture, and the sealing plate is clamped into the limiting cylinder. The stainless steel welded pipe and sealing plate are then axially advanced and pressed together by the chuck fixture and limiting cylinder, and laser welding is performed after the connection is complete. However, in order to allow the sealing plate to be smoothly inserted into the limiting cylinder manually, there will be a small gap between the inner diameter of the limiting cylinder and the outer diameter of the sealing plate. This will cause the stainless steel welded pipe to be tilted at a small angle inside the limiting cylinder, and the concentricity of the stainless steel welded pipe and the sealing plate needs to be improved. Secondly, both rely on manual handling to load the sealing plate, and the speed is limited by the worker's skill level, so the efficiency needs to be improved.

[0004] Therefore, in order to improve the efficiency and quality of welding, this invention provides a laser welding device for stainless steel welded pipes. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing a laser welding device for stainless steel welded pipes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a laser welding device for stainless steel welded pipes, including a support platform, wherein a left clamping mechanism, a laser welding mechanism and a right clamping mechanism are arranged sequentially from left to right on the support platform, and a feeding mechanism is arranged on the right clamping mechanism.

[0007] The right clamping mechanism includes an L-shaped seat, and the L-shaped seat is fixed to the right side of the top wall of the support platform. A stabilizing column is fixed to the left side wall of the vertical section of the L-shaped seat. A clamping head is rotatably connected to the left end of the stabilizing column. The feeding mechanism includes a sliding seat and a concentric assembly set on the right clamping mechanism. The feeding assembly is set on both the sliding seat and the concentric assembly. The laser welding mechanism includes a support fixedly connected to the middle and rear part of the top wall of the support platform and a laser welding head that is driven to slide up and down on the support by an electric slider.

[0008] When feeding stainless steel welded pipes through the left clamping mechanism, the feeding component stores multiple sealing plates at once and performs multiple single-plate dropping operations. Through the cooperation of the right clamping mechanism, the concentric component, and the feeding component, the sealing plates are vertically limited during the dropping process and concentrically adjusted in the circumferential direction after dropping, thereby enabling automatic batch feeding and accurate individual dropping of sealing plates.

[0009] In the aforementioned laser welding device for stainless steel welded pipes, the concentric component includes a support slide. The top wall of the L-shaped seat is provided with a slide rail. The slide rail is connected to the sliding seat and the support slide by an electric slider. The support slide and the sliding seat are distributed correspondingly to each other on the left and right, and the stabilizing column is slidably installed through the middle of the sliding seat and the support slide.

[0010] In the aforementioned laser welding device for stainless steel welded pipes, the support slide is a detachable hollow structure. A support ring is detachably installed inside the support slide. The support ring includes a central circular component installed on the inner wall of the support slide and circular pieces that are symmetrically and detachably installed on the side walls of the central circular component.

[0011] In the aforementioned laser welding device for stainless steel welded pipes, annular grooves are symmetrically provided on the left and right side walls of the central annular component, and toothed rings are rotatably connected to the annular grooves. Gears are meshed on the rear side wall of the toothed rings, and the two gears are connected to the motor output end installed on the outer wall of the support slide through the same rotating shaft.

[0012] In the aforementioned laser welding device for stainless steel welded pipes, wedge blocks one are fixedly fixed to the front and back of the inner ring wall of the toothed ring, and wedge blocks two are fixedly fixed to the front and back of the inner ring wall of the toothed ring, respectively, and the support ring is provided with slots for the movement of wedge blocks one and wedge blocks two.

[0013] In the aforementioned laser welding device for stainless steel welded pipes, the inner ring wall of the support ring is slidably connected to a vertical limiting member via a spring, and the inner ring wall of the support ring is slidably connected to a concentric adjusting member located below the vertical limiting member via a spring.

[0014] In the aforementioned laser welding device for stainless steel welded pipes, the vertical limiting component includes a limiting component that is slidably connected to the support ring and has a U-shaped structure, and a wedge block three that is fixedly connected to the limiting component and corresponds to the position of wedge block one. The concentric adjustment component includes a limiting roller that is slidably connected to the support ring, and a wedge block four that is fixedly connected to the limiting roller and corresponds to the position of wedge block two.

[0015] In the aforementioned laser welding device for stainless steel welded pipes, the feeding assembly includes a feeding bin that is fixed together by a sliding seat and a supporting sliding seat top wall. The feeding bin includes a bin body fixed on the sliding seat and the supporting sliding seat, and a bin door hinged to the top of the bin body. The feeding bin has a cylindrical storage bin oriented to the left and right. A return spring is installed on the right inner wall of the feeding bin, and a push plate that is slidably connected to the inner wall of the feeding bin is fixed to the left end of the return spring.

[0016] In the aforementioned laser welding device for stainless steel welded pipes, an inverted U-shaped frame is fixedly connected to the top left wall of the feeding bin. The two vertical sections of the inverted U-shaped frame are connected to a feeding push plate by means of an electric slider. The bottom wall of the feeding push plate is arc-shaped to match the sealing plate. The top left wall of the feeding bin has holes for the feeding push plate to pass through.

[0017] In the aforementioned laser welding device for stainless steel welded pipes, the top wall of the central ring component is provided with a feeding hole 1 that penetrates the inner ring wall, the top wall of the support slide is provided with a feeding hole 2 that corresponds to the position of feeding hole 1, and the bottom left wall of the upper hopper is provided with a feeding hole 3 that corresponds to the position of feeding hole 2.

[0018] Compared with existing technologies, the advantages of this invention are as follows: This invention batch-feeds and automatically drops the sealing plates one by one, and continuously guides them in the vertical direction during the dropping process to ensure a vertical dropping angle; after dropping, the concentricity is adjusted in the circumferential direction to ensure concentricity with the stainless steel welded pipe; and the feeding, dropping, and welding processes are automated, highly continuous, and produce good welding quality.

[0019] 1. The stainless steel welded pipes are fed through the left clamping mechanism. The feeding assembly temporarily stores the sealing plates in batches and automatically unloads them one by one, avoiding reliance on manual handling and eliminating the impact of human factors (such as fatigue and skill level) on the production cycle, which is conducive to improving welding efficiency and quality. A stack of neatly stacked sealing plates is placed into the cylindrical storage bin at once; the arc-shaped bottom wall of the feeding pusher pushes the leftmost sealing plate down one by one, and the sealing plates are unloaded sequentially through the unloading hole three, unloading hole two, and unloading hole one.

[0020] 2. Through the cooperation of the concentric component, the feeding component and the right clamping mechanism, two U-shaped limiting components restrict the verticality of the sealing plate during the unloading process. In conjunction with the unloading hole three, unloading hole two, unloading hole one and the clamping head, it ensures that the sealing plate remains vertical during the unloading process. The continuous material guidance prevents tilting, which helps to improve the concentricity of the stainless steel welded pipe and the sealing plate and improve the welding quality.

[0021] 3. Through the cooperation of the left clamping mechanism, the concentric component, the feeding component and the right clamping mechanism, the two concentric adjustment components adjust the position of the sealing plate from the bottom and cooperate with the upper feeding push plate to adjust the sealing plate to be concentric with the support ring and the clamping head from three directions, which solves the concentricity problem caused by the installation gap and helps to improve concentricity and welding quality. Attached Figure Description

[0022] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of the overall structure during the unloading of the sealing plate.

[0024] Figure 2 This is a schematic diagram of the overall structure during welding.

[0025] Figure 3 This is a schematic diagram of the right clamping mechanism.

[0026] Figure 4 This is a front view schematic diagram of part of the feeding mechanism.

[0027] Figure 5 This is a schematic diagram of the rear side of the feeding mechanism.

[0028] Figure 6 This is a partial sectional view of the feeding mechanism.

[0029] Figure 7 This is a partial structural diagram of the concentric components.

[0030] Figure 8 This is a schematic diagram of the exploded structure of the support ring.

[0031] Figure 9 This is a schematic diagram of another part of the concentric component structure.

[0032] Figure 10 This is a left-side view of the cross-section of the support ring during the unloading of the sealing plate.

[0033] Figure 11 This is a schematic diagram of the structure before the sealing plate is concentrically adjusted.

[0034] Figure 12This is a schematic diagram of the structure after the sealing plate has been concentrically adjusted.

[0035] In the diagram: 1. Support platform; 2. Left clamping mechanism; 3. Right clamping mechanism; 31. L-shaped seat; 32. Stabilizing column; 33. Clamping head; 4. Feeding mechanism; 41. Sliding seat; 42. Concentric assembly; 421. Support slide; 422. Support ring; 423. Gear ring; 424. Gear; 425. Wedge one; 426. Vertical limiting component; 427. Wedge two; 428. Concentric adjusting component; 43. Feeding assembly; 431. Feeding bin; 432. Return spring; 433. Push plate; 434. Inverted U-shaped frame; 435. Feeding push plate; 5. Laser welding mechanism. Detailed Implementation

[0036] 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.

[0037] Reference Figures 1 to 2 A laser welding device for stainless steel welded pipes includes a support platform 1. From left to right, a left clamping mechanism 2, a laser welding mechanism 5, and a right clamping mechanism 3 are arranged on the support platform 1. A feeding mechanism 4 is arranged on the right clamping mechanism 3. The left clamping mechanism 2 includes a base fixedly connected to the left side of the top wall of the support platform 1, a drive assembly rotatably mounted on the base, and a clamping assembly slidably mounted on the drive assembly. The clamping assembly is used to clamp the stainless steel welded pipe from the circumference. The drive assembly (not shown in the figure) is used to drive the clamping assembly and the stainless steel welded pipe to rotate. The laser welding mechanism 5 includes a support fixedly connected to the middle and rear part of the top wall of the support platform 1 and a laser welding head that is slidably connected to the support by an electric slider.

[0038] Before laser welding, the support platform 1 is placed on a horizontal table. The feeding mechanism 4 is used to temporarily store the sealing plates in batches and automatically unload the sealing plates one by one. The right clamping mechanism 3 and the feeding mechanism 4 work together to continuously and automatically adjust the discharge guidance, vertical limit and circumferential limit when the sealing plates are unloaded, so as to ensure that the sealing plates and stainless steel welded pipes are aligned before laser welding.

[0039] The stainless steel welded pipe is fed by a robotic arm (not shown in the figure, and the existing technology will not be described in detail here). The stainless steel welded pipe is clamped and limited by the clamping component of the left clamping mechanism 2. The right end of the stainless steel welded pipe is the end to be welded.

[0040] During laser welding, the electric slider drives the laser welding head to slide downwards on the support. Then, the drive component of the left clamping mechanism 2 rotates, causing the sealing plate and the stainless steel welding pipe to rotate. The laser welding head then welds the connection between the sealing plate and the stainless steel welding pipe.

[0041] It should be noted that the clamping assembly is a three-jaw chuck type, with the three clamping jaws moving synchronously and at equal intervals in the radial direction to automatically center and clamp the stainless steel welded pipe; the drive assembly is driven by a servo motor, which drives the clamping assembly and the stainless steel welded pipe to rotate 180 degrees during subsequent welding.

[0042] Reference Figures 1 to 3 The right clamping mechanism 3 includes an L-shaped seat 31. The L-shaped seat 31 is fixed to the right side of the top wall of the support platform 1. A stabilizing column 32 is fixed to the left side wall of the vertical section of the L-shaped seat 31. A clamping head 33 is rotatably connected to the left end of the stabilizing column 32.

[0043] Reference Figure 1 , Figure 2 and Figure 4 The feeding mechanism 4 includes a sliding seat 41 and a concentric component 42 disposed on the right clamping mechanism 3, and a feeding component 43 is disposed on both the sliding seat 41 and the concentric component 42.

[0044] Reference Figures 2 to 9 The concentric component 42 includes a support slide 421. The top wall of the L-shaped base 31 is provided with a slide rail. The slide rail is connected to the slide base 41 and the support slide 421 by an electric slider. The support slide 421 and the slide base 41 are distributed on the left and right sides respectively. The stabilizing column 32 is slidably disposed through the middle of the slide base 41 and the support slide 421. The support slide 421 is a detachable hollow structure. The support ring 422 is detachably installed inside the support slide 421. The support ring 422 includes a central ring component installed on the inner wall of the support slide 421 and two symmetrically detachable ring pieces installed on the side walls of the central ring component. The left and right side walls of the central ring component are symmetrically provided with annular grooves. A toothed ring 423 is rotatably connected to the annular groove. A gear 424 meshes with the rear side wall of the toothed ring 423. The two gears 424 are connected to the motor output end installed on the outer wall of the support slide 421 through the same rotating shaft.

[0045] Reference Figures 3 to 9The inner ring wall of the toothed ring 423 is fixed with wedge block 1 425 at the front and rear, and wedge block 2 427 is fixed with the inner ring wall of the toothed ring 423 at the front and rear, respectively, and is disposed below the corresponding wedge block 1 425. The support ring 422 has a groove for the movement of wedge block 1 425 and wedge block 2 427. The inner ring wall of the support ring 422 is slidably connected with a vertical limiting member 426 at the front and rear by a spring 1 (not shown in the figure), and the inner ring wall of the support ring 422 is slidably connected with a concentric adjusting member 428 disposed below the vertical limiting member 426 by a spring 2 (not shown in the figure). The vertical limiting member 426 includes a slidably connected to the support ring 422. The ring 422 has a U-shaped limiting member, a wedge block three fixedly connected to the limiting member and corresponding to the position of wedge block one 425, and a concentric adjustment member 428 including a limiting roller slidably connected to the support ring 422 and a wedge block four fixedly connected to the limiting roller and corresponding to the position of wedge block two 427. The left side wall of the clamping head 33 is frustoconical, the right side wall of the limiting member is adapted to the left side wall of the clamping head 33, the sides of wedge block one 425 and wedge block two 427 away from the toothed ring 423 are inclined, and the sides of wedge block three and wedge block four near the toothed ring 423 are inclined to match the corresponding wedge block one 425 and wedge block two 427.

[0046] Reference Figures 4 to 6 The feeding assembly 43 includes a feeding bin 431 fixed together with the top walls of a sliding seat 41 and a supporting sliding seat 421. The feeding bin 431 includes a bin body fixed to the sliding seat 41 and the supporting sliding seat 421, and a bin door hinged to the top of the bin body. The feeding bin 431 has a cylindrical storage bin oriented left and right. A return spring 432 is installed on the right inner wall of the feeding bin 431. A pusher plate 433 that is slidably connected to the inner wall of the feeding bin 431 is fixed to the left end of the return spring 432. An inverted U-shaped frame is fixedly connected to the top wall of the left part of the feeding bin 431. 434, the two vertical sections of the inverted U-shaped frame 434 are connected to a feeding push plate 435 by an electric slider. The bottom wall of the feeding push plate 435 is arc-shaped to match the sealing plate. The left top wall of the feeding bin 431 has a hole for the feeding push plate 435 to pass through. The top wall of the middle ring part has a discharge hole 1 that penetrates the inner ring wall. The top wall of the support slide 421 has a discharge hole 2 that corresponds to the position of discharge hole 1. The left bottom wall of the feeding bin 431 has a discharge hole 3 that corresponds to the position of discharge hole 2.

[0047] The cylindrical storage bin of the feeding hopper 431 can store multiple sealing plates at once. The specific operation is as follows: Flip the hopper door backward to open it, push the push plate 433 to the right, and the return spring 432 will be compressed, allowing a stack of neatly stacked sealing plates to be placed into the cylindrical storage bin at once. After feeding is completed, the return spring 432 returns, and the stacked sealing plates are pushed to the left by the push plate 433, making the stacked sealing plates fit tightly together. Flip the hopper door forward to close it.

[0048] It should be noted that the sealing plates and stainless steel welded pipes used in this device are all standard qualified products produced on the assembly line. The dimensional tolerances, roundness, and surface flatness of the stainless steel pipes and sealing plates have small fluctuations, which avoids jamming during the use of this device.

[0049] like Figure 6 As shown, when the stacked sealing plates are fed one by one, the feeding push plate 435 slides downwards driven by the electric slider. The arc-shaped bottom wall of the feeding push plate 435 pushes the leftmost sealing plate downwards. The sealing plate passes through the discharge hole three, discharge hole two, and discharge hole one in sequence, and gradually leaves the cylindrical storage bin of the feeding bin 431 and enters the middle of the central ring of the support ring 422. The middle of the central ring is the sealing plate drop point. This avoids reliance on manual handling and eliminates the impact of human factors (such as fatigue and skill level) on the production cycle, which is beneficial to improving welding efficiency and quality.

[0050] It should be noted that the frictional force generated by the elasticity of the return spring 432 is greater than the gravitational force on the sealing plate. Therefore, the leftmost sealing plate will not slide down into the discharge holes three, two, and one when it is unsupported at the bottom before being pushed by the feeding push plate 435.

[0051] like Figures 6 to 10 As shown, before the sealing plate is dropped, the motor drives the gear 424 to rotate, and the gear ring 423 rotates backward, which drives the wedge block 1 425 to move and push the corresponding wedge block 3 to move. The limiting members of the two vertical limiting members 426 move closer to the sealing plate dropping point, while driving the wedge block 2 427 to move away from the wedge block 4. The limiting rollers of the two concentric adjusting members 428 move away from the sealing plate dropping point.

[0052] The openings of the two U-shaped limiting members are opposite each other, and the distance between the two openings is adapted to the diameter of the sealing plate. When the sealing plate is being unloaded, it gradually enters the space between the two limiting members from top to bottom. The two U-shaped limiting members restrict the verticality of the sealing plate during the unloading process. They cooperate with the three unloading holes, the two unloading holes, the one unloading hole and the clamping head 33 to ensure that the sealing plate remains vertical during the unloading process. The continuous material guidance prevents tilting during unloading, which helps to improve the concentricity of the stainless steel welded pipe and the sealing plate and improve the welding quality.

[0053] After the sealing plate is unloaded, it lands at the unloading point in the middle of the central ring part (e.g., Figure 11As shown), the motor drives the gear 424 to rotate, and the gear ring 423 rotates forward accordingly, causing the first wedge 425 to move away from the corresponding third wedge. The limiting members of the two vertical limiting members 426 move away from the sealing plate's drop point, gradually releasing the restriction on the sealing plate. At the same time, the second wedge 427 moves closer to the fourth wedge, pushing the limiting rollers of the two concentric adjustment members 428 closer to the sealing plate. The two concentric adjustment members 428 adjust the position of the sealing plate from the bottom and cooperate with the upper feeding push plate 435 to adjust the sealing plate from three directions to make it concentric with the support ring 422 and the clamping head 33. This solves the concentricity problem caused by the installation gap, which is beneficial to improving the concentricity of the stainless steel welded pipe and the sealing plate and improving the welding quality. When the sealing plate completes the concentricity adjustment, the limiting plate simultaneously completes the retraction action (e.g., Figure 12 (As shown).

[0054] It should be noted that the above-mentioned motor is a forward and reverse motor. The rotation angle of the motor output end, the sliding distance of the electric slider driving the feeding push plate 435, the size of the vertical limit member 426 and the concentric adjustment member 428, and the selection of the return spring 432 are all results obtained by those skilled in the art through multiple experiments to ensure the precise operation of the device.

[0055] It should be noted that the clamping head 33 is located on the right side of the sealing plate unloading area. The U-shaped limiting component, limiting roller, left side wall of the clamping head 33, and bottom wall of the feeding push plate 435 that are in contact with the sealing plate are made of soft materials such as copper alloy to prevent scratches.

[0056] During the unloading of the sealing plate, after the sealing plate has completed concentricity adjustment, the stainless steel welded pipe is loaded by a robotic arm. The stainless steel welded pipe passes through the clamping assembly of the right clamping mechanism 3, with its right end inserted into the middle of the support slide 421 and its right end face accurately abutting the left side wall of the sealing plate. The stainless steel welded pipe and the clamping head 33 together clamp the sealing plate. After the stainless steel welded pipe is locked in position by the clamping assembly of the left clamping mechanism 2, the support slide 421 and the sliding seat 41 slide to the right via an electric slider, and the loading mechanism 4 disengages from the sealing plate (e.g., Figure 2 As shown in the figure, after the electric slider drives the laser welding head to slide downward on the support, the drive component of the left clamping mechanism 2 rotates, causing the sealing plate and the stainless steel welding pipe to rotate, and the laser welding head welds the connection between the sealing plate and the stainless steel welding pipe.

[0057] In this invention, stainless steel welded pipes are fed using a robotic arm and the clamping assembly of the left clamping mechanism 2. Multiple sealing plates are stored at once by the feeding assembly 43, and each plate is dropped multiple times. The right clamping mechanism 3, the concentric assembly 42, and the feeding assembly 43 work together to limit vertical movement during the dropping process and to perform concentric adjustment circumferentially after dropping. This allows for batch feeding of sealing plates, automatic and accurate dropping one by one, and full control of the sealing plates from dropping to the welding position, achieving automatic continuous feeding and welding. Although this invention adds a feeding mechanism 4 compared to existing technologies, the feeding, dropping, and welding processes of this invention are highly automated and continuous, resulting in good welding quality. From a long-term economic perspective, the increased equipment cost compared to existing technologies is negligible.

[0058] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0059] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A laser welding device for stainless steel welded pipes, comprising a support platform, characterized in that, The support platform is provided with a left clamping mechanism, a laser welding mechanism and a right clamping mechanism from left to right, and the right clamping mechanism is provided with a feeding mechanism. The right clamping mechanism includes an L-shaped seat, and the L-shaped seat is fixed to the right side of the top wall of the support platform. A stabilizing column is fixed to the left side wall of the vertical section of the L-shaped seat. A clamping head is rotatably connected to the left end of the stabilizing column. The feeding mechanism includes a sliding seat and a concentric assembly set on the right clamping mechanism. The feeding assembly is set on both the sliding seat and the concentric assembly. The laser welding mechanism includes a support fixedly connected to the middle and rear part of the top wall of the support platform and a laser welding head slidably connected to the support. The concentric component includes a support slide, and the top wall of the L-shaped base is provided with a slide rail. The slide rail is connected to the sliding base and the support slide by an electric slider. The support slide and the sliding base are distributed on the left and right sides respectively, and the stabilizing column is slidably installed through the middle of the sliding base and the support slide. The support slide has a detachable hollow structure. A support ring is detachably installed inside the support slide. The support ring includes a central circular part installed on the inner wall of the support slide and circular pieces that are symmetrically and detachably installed on the side walls of the central circular part. The left and right side walls of the central ring are symmetrically provided with annular grooves, and a toothed ring is rotatably connected to the annular groove. A gear is meshed on the rear side wall of the toothed ring. The two gears are connected to the motor output end installed on the outer wall of the support slide through the same rotating shaft. The inner ring wall of the toothed ring is fixed with wedge block one at the front and back, and the inner ring wall of the toothed ring is fixed with wedge block two below the corresponding wedge block one at the front and back. The support ring is provided with a groove for wedge block one and wedge block two to move. The feeding assembly includes a feeding bin that is fixed together by a sliding seat and a support sliding seat top wall. The feeding bin includes a bin body fixed on the sliding seat and the support sliding seat, and a bin door hinged to the top of the bin body. The feeding bin has a cylindrical storage bin facing left and right inside. A return spring is installed on the right inner wall of the feeding bin, and a push plate that is slidably connected to the inner wall of the feeding bin is fixed to the left end of the return spring. The left top wall of the feeding hopper is fixedly connected to an inverted U-shaped frame, and the two vertical sections of the inverted U-shaped frame are slidably connected to a feeding push plate on their respective sides. The bottom wall of the feeding push plate is arc-shaped to match the sealing sheet. The left top wall of the feeding hopper is provided with holes for the feeding push plate to pass through. When feeding stainless steel welded pipes through the left clamping mechanism, the feeding component stores multiple sealing plates at once and performs multiple single-plate dropping operations. Through the cooperation of the right clamping mechanism, the concentric component, and the feeding component, the sealing plates are vertically limited during the dropping process and concentrically adjusted in the circumferential direction after dropping, thereby enabling automatic batch feeding and accurate individual dropping of sealing plates.

2. The laser welding device for stainless steel welded pipes according to claim 1, characterized in that, The inner ring wall of the support ring is slidably connected to a vertical limiting member via a spring, and the inner ring wall of the support ring is slidably connected to a concentric adjusting member located below the vertical limiting member via a spring.

3. The laser welding device for stainless steel welded pipes according to claim 2, characterized in that, The vertical limiting component includes a U-shaped limiting component that is slidably connected to the support ring and a wedge block three that is fixedly connected to the limiting component and corresponds to the position of wedge block one. The concentric adjustment component includes a limiting roller that is slidably connected to the support ring and a wedge block four that is fixedly connected to the limiting roller and corresponds to the position of wedge block two.

4. The laser welding device for stainless steel welded pipes according to claim 1, characterized in that, The top wall of the central ring component has a discharge hole 1 that penetrates the inner ring wall, the top wall of the support slide has a discharge hole 2 that corresponds to the position of discharge hole 1, and the bottom left wall of the upper hopper has a discharge hole 3 that corresponds to the position of discharge hole 2.

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