Laser welding system and process method for elevator door panel reinforcing rib

Abstract

The application discloses an elevator door plate reinforcing rib laser welding system and a process method, relates to the elevator door plate component technical field in the mechanical manufacturing field. The application comprises a door plate feeding riveting area, a reinforcing rib feeding area and a door plate laser welding area; the door plate feeding riveting area is connected with a door plate automatic bending line and comprises at least one set of door plate conveying mechanisms and a door plate reinforcing rib riveting unit. The door plate conveying mechanism is used for driving the door plate to move towards the door plate reinforcing rib riveting unit; the door plate reinforcing rib riveting unit is installed on a riveting platform rack and is used for the initial fixation of the reinforcing rib and the door plate; the reinforcing rib feeding area comprises at least one set of reinforcing rib storage positions, a reinforcing rib positioning platform, a reinforcing rib grabbing suction disc rack and a reinforcing rib feeding robot; the reinforcing rib positioning platform is used for reinforcing rib positioning; the reinforcing rib grabbing suction disc rack is fixedly connected with a mechanical hand of the reinforcing rib feeding robot; and the reinforcing rib grabbing suction disc rack is electrically connected with vacuum equipment on the reinforcing rib feeding robot.

Description

Technical Field

[0001] This invention relates to the field of elevator door panel component technology in the machinery manufacturing industry, and more specifically, to a laser welding system and process for elevator door panel reinforcing ribs. Background Technology

[0002] Currently, the traditional production process for assembling elevator door panels and reinforcing ribs mostly uses special adhesives or tapes to bond the door panel and reinforcing ribs together, and then uses riveting or spot welding to fix the two ends of the reinforcing ribs to the door panel to make the reinforcing ribs firmly bonded. The special adhesives or tapes used in this method are expensive, and the production efficiency and automation efficiency are not high.

[0003] Chinese Patent Publication No. CN109604826A, published on April 12, 2019, discloses an automatic laser welding system for elevator door panels. The system includes a feeding area, a reinforcing rib feeding area, a door panel welding area, and a discharging area. The feeding area includes a door panel feeding and detection mechanism, a door panel gripping mechanism, and a door panel conveying mechanism. The reinforcing rib feeding area includes a reinforcing rib feeding platform assembly, a reinforcing rib positioning platform assembly, a reinforcing rib gripping assembly, and a second rotating robot. The door panel welding area includes a door panel welding area... The invention comprises a plate welding platform, a welding robot, a welding gun, a door panel clamp, and welding clamps; the unloading area includes a conveyor frame, a second roller group, a second suction cup frame, a third rotating robot, and a door panel unloading table assembly; this invention uses a set of automated laser welding production lines for door panels to replace the traditional hot riveting or spot welding, reinforcing rib bonding, and hot baking processes; however, the specific implementation structure differs significantly from this invention, and the coordination between the various mechanisms such as transportation, positioning, and processing in this solution is more efficient and precise, making it more suitable for laser processing technology to replace the existing bonding or spot welding process for door panel reinforcing ribs. Summary of the Invention

[0004] To overcome the aforementioned technical problems, a laser welding system for elevator door panel reinforcing ribs is provided. This system uses advanced laser processing to replace existing bonding or spot welding of door panel reinforcing ribs, thereby improving the automation level of elevator door panel processing, significantly increasing production efficiency, reducing manual operation time, and lowering production costs, which aligns with the future direction of intelligent manufacturing.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an elevator door panel reinforcing rib laser welding system, comprising a door panel feeding and riveting area, a reinforcing rib feeding area and a door panel laser welding area;

[0006] The door panel feeding and riveting area is connected to the automatic door panel bending line and includes at least one set of door panel conveying mechanism and door panel reinforcing rib riveting unit. The door panel conveying mechanism includes a conveyor frame and a door panel detection unit and roller conveying device fixed to the conveyor frame. The door panel detection unit includes a door panel material detection component and a door panel no-material detection component, which are respectively installed at the front and rear ends of the conveyor frame. The roller conveying device is installed on the conveyor frame and is used to drive the door panel towards the door panel reinforcing rib riveting unit. The door panel reinforcing rib riveting unit includes several sets of riveting devices installed on the riveting platform frame for initial fixing of the reinforcing rib to the door panel.

[0007] The reinforcing rib feeding area includes at least one set of reinforcing rib storage locations, a reinforcing rib positioning platform, a reinforcing rib gripping suction cup frame, and a reinforcing rib feeding robot; the reinforcing rib positioning platform is used for positioning the reinforcing ribs; the reinforcing rib gripping suction cup frame is fixedly connected to the robotic arm of the reinforcing rib feeding robot; the reinforcing rib gripping suction cup frame is electrically connected to the vacuum equipment on the reinforcing rib feeding robot.

[0008] The door panel laser welding area includes a laser welding workbench, a gantry-type laser welding moving device, a laser welding gun, a clamping device, a lifting and translating assembly, a second door panel centering assembly, a second door panel stopping assembly, and a smoke and dust removal system;

[0009] The gantry-type laser welding moving device includes two sets of X-axis servo screw slide assemblies along the flow direction of the door panel, at least one set of Z-axis servo screw slide assemblies, and a gantry bridge. The gantry-type laser welding moving device, the lifting and translating assembly, the second door panel centering assembly, and the second door panel stopping assembly are all installed on the laser welding worktable. The gantry-type laser welding moving device is installed on the side of the laser welding worktable away from the door panel feeding side. The lifting and translating assembly is installed in the middle of the laser welding worktable and is responsible for lifting and conveying the door panel to the correct position, and then lowering the door panel onto the worktable. The second door panel centering assembly is installed on the two side platforms of the laser welding worktable and is responsible for centering, positioning, and clamping the door panel, respectively. The second door panel stopping assembly is installed at the end of the laser welding worktable. The laser welding gun, the clamping device, and the fume extraction and dust removal system are all installed on the gantry-type laser welding moving device.

[0010] Furthermore, the door panel reinforcing rib riveting unit includes a first door panel centering component and a first door panel stopping component mounted on the riveting platform frame.

[0011] Furthermore, the reinforcing rib positioning platform includes a reinforcing rib positioning platform frame, a fixed backing, and a movable positioning device driven by a screw slide assembly. The fixed backing is installed on the side of the reinforcing rib positioning platform frame near the door panel reinforcing rib riveting unit, and the movable positioning device is installed on the reinforcing rib positioning platform frame together with the screw slide assembly.

[0012] Furthermore, the lead screw slide assembly includes several moving guide rails, a mounting base, a servo motor fixed on the mounting base, a rotating lead screw mounted on the output shaft of the servo motor and rotatably connected to the mounting base, and a movable positioning device mounted on the rotating lead screw, wherein the movable positioning device is slidably mounted on the moving guide rails.

[0013] Furthermore, the door panel laser welding area also includes a lifting cylinder, which is fixedly installed on the laser welding worktable and is used for lifting and adjusting the translation component.

[0014] Furthermore, the elevator door panel reinforcing rib laser welding system also includes a laser protective cover installed around the laser welding area of ​​the door panel. This structure is used for installation protection of the laser welding area of ​​the door panel.

[0015] Furthermore, the second door panel centering assembly also includes a guide rail welding spatter shield to prevent welding spatter from damaging the guide rail.

[0016] Furthermore, the gantry-type laser welding moving device also includes an infrared sensor, which is mounted on the clamping device and used for focusing the laser generator.

[0017] Furthermore, the X-axis servo screw slide assembly of the gantry laser welding moving device is equipped with a limit switch, which is used to control the movement stroke of the gantry laser welding moving device and has the function of detecting the position.

[0018] A process for laser welding elevator door panel reinforcing ribs involves the following steps: The door panel body, processed by an automated door panel bending line, enters the laser welding system via an assembly line. The door panel first flows through the door panel feeding and riveting area to the reinforcing rib riveting unit for centering and positioning. Then, a reinforcing rib loading robot retrieves and positions the ribs from their storage location, accurately placing them at the designated riveting positions on the door panel. The riveting device performs initial riveting and fixing of the door panel and both ends of the reinforcing ribs. Finally, the panel flows into the laser welding area for laser welding to complete the final welding and fixing before exiting to the next process. This process utilizes a system that connects to the automated door panel bending line for feeding and can be connected to a door panel hanging robot for powder coating, enabling fully automated production.

[0019] Compared with the prior art, the beneficial effects of the present invention are reflected in:

[0020] 1. The elevator door panel reinforcing rib welding system of the present invention is particularly suitable for the modernization of equipment in enterprises with gradually expanding production scale, so as to realize intelligent manufacturing and unmanned operation.

[0021] 2. This invention realizes a mode in which the door panel is initially fixed by riveting the reinforcing ribs after bending and forming, and then completely fixed by laser welding of the reinforcing ribs. This replaces the traditional processes of gluing and spot welding, which greatly improves production efficiency, reduces manual operation time, and lowers production costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the laser welding system for reinforcing ribs of the elevator door panel of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the door panel feeding and riveting area of ​​the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the reinforcing rib feeding area of ​​the present invention;

[0025] Figure 4 This is a partially enlarged schematic diagram of the reinforcing rib feeding area of ​​the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the laser welding area of ​​the door panel in this invention;

[0027] Figure 6 yes Figure 2 A magnified view of the area marked "AA" in the diagram.

[0028] In the diagram: Door panel feeding and riveting area (100), door panel conveying mechanism (101), door panel reinforcing rib riveting unit (102), conveyor frame (101-1), roller conveyor device (101-2), riveting platform frame (102-1), riveting device (102-2), first door panel centering assembly (102-3), first door panel stopping assembly (102-4), reinforcing rib feeding area (200), reinforcing rib storage location (201), reinforcing rib positioning platform (202), reinforcing rib gripping suction cup frame (203), reinforcing rib feeding robot (204), feeding robot base (205), reinforcing rib positioning platform frame (202-1), fixed support (202-2), screw slide assembly (202-3). 1. Moving guide rail (202-31), rotating lead screw (202-32), mounting base (202-33), servo motor (202-34), driven moving positioning device (202-4), door panel laser welding area (300), laser welding worktable (301), gantry laser welding moving device (302), laser welding gun (303), clamping device (304), lifting and translating assembly (305), lifting cylinder (305-1), second door panel centering assembly (306), second door panel stopping assembly (307), smoke and dust removal system (308), X-axis servo lead screw slide assembly (302-1), Z-axis servo lead screw slide assembly (302-2), gantry bridge (302-3). Detailed Implementation

[0029] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0030] The technical solution of the invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0031] Example 1: A laser welding system for reinforcing ribs of elevator door panels, as shown in the attached figure. Figures 1-6 As shown, the present invention provides an elevator door panel reinforcing rib laser welding system, including a door panel feeding and riveting area (100), a reinforcing rib feeding area (200), and a door panel laser welding area (300).

[0032] The door panel feeding and riveting area (100) is connected to the automatic door panel bending line and includes at least one door panel conveying mechanism (101) and a door panel reinforcing rib riveting unit (102). The door panel conveying mechanism (101) includes a conveyor frame (101-1) and a door panel detection unit and a roller conveying device (101-2) fixed on the conveyor frame (101-1). The door panel detection unit includes a door panel material detection component and a door panel no-material detection component. The material detection component and the no-material detection component are respectively installed at the front and rear ends of the conveyor frame (101-1). The material detection component continuously triggers after detecting the door panel flowing in at the feed inlet position, and the no-material detection component continuously triggers after detecting the door panel flowing in at the feed inlet position. The discharge port is reset after the door panel flows out; the roller conveyor (101-2) is installed on the conveyor frame (101-1) to drive the door panel toward the door panel laser welding area (300); the door panel reinforcing rib riveting unit (102) includes 4 sets of riveting devices (102-2), a first door panel centering assembly (102-3), and a first door panel stopping assembly (102-4) installed on the riveting platform frame (102-1) for initial fixing of the reinforcing rib and the door panel;

[0033] The reinforcing rib feeding area (200) includes at least one set of reinforcing rib storage space (201), reinforcing rib positioning platform (202), reinforcing rib gripping suction cup frame (203), reinforcing rib feeding robot (204) and feeding robot base (205). The reinforcing rib feeding robot (204) is mounted on the feeding robot base (205), and the reinforcing rib gripping suction cup frame (203) is mounted at the end of the reinforcing rib gripping suction cup frame (203). The reinforcing rib positioning platform (202) includes a reinforcing rib positioning platform frame (202-1), a fixed support (202-2), and a movable positioning device (202-4) driven by a screw and slide assembly (202-3). The screw and slide assembly (202-3) includes several moving guide rails (202-31), a mounting base (202-33), a servo motor (202-34) fixed on the mounting base, a rotating screw (202-32) mounted on the output shaft of the servo motor (202-34) and rotatably connected to the mounting base (202-33), and a movable positioning device (202-4) mounted on the rotating screw (202-32). Slidingly mounted on the movable guide rail (202-31), the fixed backrest (202-2) is installed on the side of the reinforcing rib positioning platform frame (202-1) near the door panel reinforcing rib riveting unit (102). The movable positioning device (202-4) and the lead screw slide assembly (202-3) are installed together on the reinforcing rib positioning platform frame (202-1). The servo motor (202-34) can drive the rotating lead screw (202-32) to rotate forward. (Or in the opposite direction) rotation, the rotating screw (202-32) rotates in the forward (or reverse) direction, which can drive the movable positioning device (202-4) to slide along the moving guide rail (202-31), that is, move towards (or away from) the fixed support (202-2); the reinforcing rib gripping suction cup frame (203) is fixedly connected to the manipulator of the reinforcing rib loading robot (204); the reinforcing rib gripping suction cup frame is electrically connected to the vacuum equipment on the reinforcing rib loading robot;

[0034] The door panel laser welding area (300) includes a laser welding worktable (301), a gantry-type laser welding moving device (302), a laser welding gun (303), a clamping device (304), a lifting and translating assembly (305), a second door panel centering assembly (306), a second door panel stopping assembly (307), and a smoke and dust removal system (308). The gantry-type laser welding moving device (302) includes two sets of X-axis servo screw slide assemblies (302-1) along the door panel flow direction, at least one set of Z-axis servo screw slide assemblies (302-2), and a gantry bridge (302-3). The gantry-type laser welding moving device (302), the lifting and translating assembly (305), the second door panel centering assembly (306), and the second door panel stopping assembly (307) are all installed on the laser welding worktable (301), wherein the gantry-type laser welding moving device (302) is installed on the laser welding worktable (301) away from the door panel. On the feeding side, the lifting and translation component (305) is installed in the middle of the laser welding workbench (301) and is responsible for lifting the conveying door panel into place and lowering the door panel onto the workbench. The second door panel centering component (306) is installed on the two side platforms of the laser welding workbench (301) and is responsible for centering and clamping the door panel respectively. The second door panel stopping component (307) is installed at the end of the laser welding workbench (301). The laser welding gun (303), the clamping device (304), and the smoke and dust removal system (308) are all installed on the gantry laser welding moving device (302).

[0035] The door panel laser welding area (300) also includes a lifting cylinder (305-1), which is fixedly installed on the laser welding worktable (301) and is used to lift and move the translation component.

[0036] The laser welding system for the elevator door panel reinforcing ribs can also be equipped with a laser protective cover, which is located around the perimeter of the laser welding area (300) of the door panel.

[0037] The second door panel centering assembly (306) also includes a guide rail welding spatter shield to prevent welding spatter from damaging the guide rail.

[0038] The gantry-type laser welding moving device (302) also includes an infrared sensor, which is mounted on the clamping device (304) for focusing the laser generator.

[0039] The gantry laser welding moving device (302) has an limit switch installed in the X-axis servo screw slide assembly to control the movement stroke of the gantry laser welding moving device (302) and to detect when it is in position.

[0040] The reinforcing rib feeding area (200) also includes a reinforcing rib material detection device, which is used to sense whether there is material available in the reinforcing rib storage position to avoid equipment errors.

[0041] A process method for a laser welding system for elevator door panel reinforcing ribs, wherein the system is connected to an automatic door panel bending line for feeding and can be connected to a door panel hanging robot for powder coating, achieving fully automated production. The specific process flow is as follows: The door panel first flows into the door panel reinforcing rib riveting unit (102) via the door panel conveying mechanism (101), triggering a material arrival signal, causing the first door panel blocking component (102-4) to stop the door panel, and then the first door panel centering component (102-3) to center the door panel and place it in the designated position to ensure that the door panel will not move; since the reinforcing ribs are generally placed back-to-back on the reinforcing rib trolley, under the power and air supply state, the reinforcing rib material detection device detects that there is material in the reinforcing rib storage position (201), and so on. Form 1: The reinforcing rib loading robot (204) drives the reinforcing rib gripping suction cup frame (203) to pick up the reinforcing rib (forward) from the reinforcing rib storage position (201) and place it on the reinforcing rib positioning platform (202). At this time, the screw slide assembly (202-3) drives the movable positioning device (202-4) to push the reinforcing rib to the fixed backing (202-2) to complete the reinforcing rib positioning. Then, the reinforcing rib loading robot (204) drives the reinforcing rib gripping suction cup frame (203) to pick up the reinforcing rib from above. The screw slide assembly (202-3) pushes the reinforcing rib to the fixed backing (202-2) to complete the reinforcing rib positioning. 2-3) Retract, the reinforcing rib loading robot (204) lifts and places the reinforcing rib on the fixed position of the door panel; Scenario 2: When the reinforcing rib (reverses), the reinforcing rib loading robot (204) drives the reinforcing rib gripping suction cup frame (203) to pick up the reinforcing rib (reverses) from the reinforcing rib storage position (201) and place it on the reinforcing rib positioning platform (202). At this time, the screw slide assembly (202-3) drives the movable positioning device (202-4) to push the reinforcing rib to the fixed backing (202-2) to complete the reinforcing rib positioning, and then add The reinforcing rib loading robot (204) drives the reinforcing rib gripping suction cup frame (203) to pick up the reinforcing rib from below. The screw slide assembly (202-3) retracts, and the reinforcing rib loading robot (204) lifts up and places the reinforcing rib on the fixed position of the door panel. Then, the two corresponding sets of the four riveting devices (102-2) perform initial riveting fixation on the overlapping positions of the reinforcing rib and the two ends of the door panel. Then, the first door panel stopping assembly (102-4) falls down, and the door panel conveying mechanism (101) sends the door panel to the laser welding worktable (301). At this time, the door panel triggers the material arrival signal, the lifting and translating component (305) rises, the synchronous belt rotates, causing the door panel to flow into the laser welding worktable (301), the second door panel blocking component (307) moves synchronously to block the door panel, then the synchronous belt of the lifting and translating component (305) stops rotating and lowers, so that the door panel contacts the surface of the laser welding worktable (301), and then the second door panel centering component (306) completes the centering and fixing of the door panel.At this time, the Z-axis servo screw slide assembly (302-2) drives the laser welding gun (303), the clamping device (304), and the smoke and dust removal system (308) to move downwards. The infrared sensor performs laser focusing, and the clamping device (304) clamps the reinforcing rib to make it fit against the door panel, ensuring the welding gap requirements and ensuring welding quality. Then, the laser welding gun (303) starts welding, and the gantry laser welding moving device (302) moves along the welding direction of the reinforcing rib under the drive of two sets of X-axis servo screw slide assemblies (302-1), so that the door panel and the reinforcing rib are welded together evenly and intermittently. Finally, the limit detection switch is triggered. After welding is completed, the gantry laser welding moving device (302) returns to the origin, the second door panel centering assembly (306) resets, the second door panel stopping assembly (307) lowers, and the lifting and translation assembly (305) rises and transports the door panel to the next process. As an extension, the subsequent process can be carried out by a door panel hanging robot for unloading, powder coating, and powder spraying. The entire process is fully automated, making on-site management convenient, significantly improving production efficiency, reducing manual labor time, and lowering production costs.

[0042] The present invention is described in detail only for the embodiments, but it should not be construed as limiting other ways of implementing the present invention. Any further improvements and similar or identical solutions based on the present invention are considered to be within the scope of protection claimed by the present invention.

Claims

1. A laser welding system for reinforcing ribs of elevator door panels, characterized in that, Includes the door panel feeding and riveting area (100), the reinforcing rib feeding area (200), and the door panel laser welding area (300). The door panel feeding and riveting area (100) is connected to the automatic bending line of the door panel, and includes at least one set of door panel conveying mechanism (101) and door panel reinforcing rib riveting unit (102); the door panel conveying mechanism (101) includes a conveyor frame (101-1) and a door panel detection unit and roller conveying device (101-2) fixed on the conveyor frame (101-1); the door panel detection unit includes a door panel material detection component and a door panel no-material detection component, the material detection component and the no-material component The detection components are respectively installed at the front and rear ends of the conveyor frame (101-1); the roller conveyor device (101-2) is installed on the conveyor frame (101-1) and is used to drive the door panel to move towards the door panel reinforcing rib riveting unit (102); the door panel reinforcing rib riveting unit (102) includes a riveting platform frame (102-1) and several sets of riveting devices (102-2) arranged on the riveting platform frame (102-1) for the initial fixing of the reinforcing rib and the door panel; The reinforcing rib loading area (200) includes at least one set of reinforcing rib storage slots (201), a reinforcing rib positioning platform (202), a reinforcing rib gripping suction cup frame (203), and a reinforcing rib loading robot (204); the reinforcing rib positioning platform (202) is used for positioning the reinforcing ribs; the reinforcing rib gripping suction cup frame (203) is fixedly connected to the manipulator of the reinforcing rib loading robot (204); the reinforcing rib gripping suction cup frame (203) is electrically connected to the vacuum equipment on the reinforcing rib loading robot (204); The door panel laser welding area (300) includes a laser welding workbench (301), a gantry-type laser welding moving device (302), a laser welding gun (303), a clamping device (304), a lifting and translating assembly (305), a second door panel centering assembly (306), a second door panel stopping assembly (307), and a smoke and dust removal system (308). The gantry-type laser welding moving device (302) includes two sets of X-axis servo screw slide assemblies (302-1) along the flow direction of the door panel, at least one set of Z-axis servo screw slide assemblies (302-2), and a gantry bridge (302-3). The gantry-type laser welding moving device (302), the lifting and translating assembly (305), the second door panel centering assembly (306), and the second door panel stopping assembly (307) are all installed on the laser welding worktable (301), wherein the gantry-type laser welding moving device (302) is installed on the laser welding worktable (301) away from the door panel. On the feeding side, the lifting and translation component (305) is installed in the middle of the laser welding workbench (301) and is responsible for lifting the conveying door panel into place and lowering the door panel onto the workbench. The second door panel centering component (306) is installed on the two side platforms of the laser welding workbench (301) and is responsible for centering and clamping the door panel respectively. The second door panel stopping component (307) is installed at the end of the laser welding workbench (301). The laser welding gun (303), the clamping device (304), and the smoke and dust removal system (308) are all installed on the gantry laser welding moving device (302).

2. The laser welding system for reinforcing ribs of elevator door panels according to claim 1, characterized in that, The door panel reinforcing rib riveting unit (102) includes a first door panel centering component (102-3) and a first door panel stopping component (102-4) mounted on the riveting platform frame (102-1).

3. A laser welding system for reinforcing ribs of an elevator door panel according to claim 1 or 2, characterized in that, The reinforcing rib positioning platform (202) includes a reinforcing rib positioning platform frame (202-1), a fixed backrest (202-2), and a movable positioning device (202-4) driven by a screw slide assembly (202-3). The fixed backrest (202-2) is installed on the side of the reinforcing rib positioning platform frame (202-1) near the door panel reinforcing rib riveting unit (102). The movable positioning device (202-4) is installed on the reinforcing rib positioning platform frame (202-1) together with the screw slide assembly (202-3).

4. The laser welding system for reinforcing ribs of an elevator door panel according to claim 3, characterized in that, The lead screw slide assembly (202-3) includes several moving guide rails (202-31), a mounting base (202-33), a servo motor (202-34) fixed on the mounting base, a rotating lead screw (202-32) disposed on the output shaft of the servo motor (202-34) and rotatably connected to the mounting base (202-33), and a movable positioning device (202-4) disposed on the rotating lead screw (202-32). The movable positioning device (202-4) is slidably mounted on the moving guide rails (202-31).

5. The laser welding system for reinforcing ribs of an elevator door panel according to claim 4, characterized in that, The door panel laser welding area (300) also includes a lifting cylinder (305-1), which is fixedly installed on the platform below the laser welding worktable (301) and is used to drive the lifting and translation component (305) to adjust its height.

6. A laser welding system for reinforcing ribs of an elevator door panel according to claim 1, 2, 4, or 5, characterized in that, The elevator door panel reinforcing rib laser welding system also includes a laser protective cover installed around the laser welding area (300) of the door panel.

7. The laser welding system for reinforcing ribs of an elevator door panel according to claim 6, characterized in that, The second door panel centering assembly (306) also includes a guide rail welding spatter shield.

8. The laser welding system for reinforcing ribs of an elevator door panel according to claim 7, characterized in that, The gantry-type laser welding mobile device (302) also includes an infrared sensor, which is mounted on the clamping device (304).

9. The laser welding system for reinforcing ribs of an elevator door panel according to claim 8, characterized in that, The gantry-type laser welding moving device (302) has an limit switch installed inside the X-axis servo screw slide assembly (302-1).

10. The process method of a laser welding system for elevator door panel reinforcing ribs as described in any one of claims 1-9, characterized in that, The main body of the door panel, after being processed by the automatic bending line, enters the laser welding system for the reinforcing ribs of the elevator door panel along the production line. The door panel first flows through the door panel feeding and riveting area (100) to the door panel reinforcing rib riveting unit (102) for centering and positioning. Then, the reinforcing rib feeding robot (204) takes the material from the reinforcing rib storage position (201) and accurately places it at the designated riveting position on the door panel. The riveting device (102-2) completes the initial riveting and fixing of the two ends of the door panel and the reinforcing rib. Then, it flows into the door panel laser welding area (300) for laser welding to complete the final welding and fixing and flows out to the next process.

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