A rapid welding machine for elevator car panels

Abstract

The application discloses a kind of elevator car board quick welding machine, belong to elevator car board processing welding technical field, the application includes the base placed in welding workshop, the outside of the base is equipped with annular slide rail by lifting adjustment structure, and annular slide rail is evenly equipped with welding mechanical arm, the inboard of the cavity of the base is fixedly installed with assembly drive motor, and the upper surface of base is provided with limit slot, and the inboard of limit slot is slidably provided with sliding block, the transmission assembly is connected between the assembly drive motor and sliding block, the outside of the sliding block is rotatably installed with rotary seat, and the upper of rotary seat is provided with positioning assembly for the negative pressure suction positioning of elevator car board. The elevator car board quick welding machine can realize the quick positioning assembly of different size elevator car board, to improve overall welding efficiency and precision, and welding fume can be effectively absorbed and treated during long distance welding process.

Description

Technical Field

[0001] This invention relates to the field of elevator car panel processing and welding technology, specifically to a rapid welding machine for elevator car panels. Background Technology

[0002] As the core load-bearing component of the elevator system, the structural stability and safety performance of the elevator car are directly related to the life safety of the passengers. The car panel, as a key component constituting the main body of the car, is usually made of materials such as stainless steel plate and cold-rolled steel plate, which are cut, bent and spliced ​​together. Welding is the core process to ensure the splicing strength, sealing performance and structural accuracy of the car panel.

[0003] The prior art (Chinese patent publication number: CN117484042A, publication date: 2024-02-02) discloses a multi-station welding device for elevator cars, including a welding assembly. The welding assembly includes a U-shaped frame, a support base, an adjusting screw, a servo motor, four adjusting seats, a sliding seat, a welding head, a transmission screw, a lifting seat, a transmission motor, four sliding grooves, a threaded rod, a drive motor, and a joint motor; the four sliding grooves are symmetrically opened on the upper surface of the four adjusting seats. This invention, through the cooperation of a transmission motor and a transmission lead screw, and the cooperation of a servo motor and an adjusting lead screw, can move the welding head to the top of the car frame and simultaneously to the joint between the car frame and the car panel. The welding head is driven by a U-shaped frame, allowing it to weld the joint between the car frame and the car panel from the inside. Furthermore, by setting four workstations, welding can be performed on four joints simultaneously, replacing the traditional manual welding method and improving work efficiency. Existing technology (Chinese patent publication number: CN117359170A, publication date: 2024-01-09) discloses a rapid welding device for elevator cars, including a feeding assembly. The feeding assembly includes a third motor, a first lead screw, a connecting rod, a fourth motor, a second lead screw, a support plate, a fifth motor, a bracket, a sixth motor, a rotating shaft, a connecting frame, a vacuum generator, and a vacuum suction cup. The output shaft of the third motor is fixedly connected to one end of the first lead screw. This invention controls the operation of the third and fourth motors via a control panel, driving the first and second lead screws to rotate, thereby moving the connecting frame. The fifth and sixth motors then rotate the connecting frame, which, through a vacuum generator and vacuum suction cups, adsorbs materials onto the car wall or car top, thus achieving automatic material feeding and fixing the materials in designated positions. This process quickly completes multiple steps such as handling, positioning, adjustment, and fixing, saving operation time, reducing the workload of workers, and improving welding efficiency.

[0004] Existing elevator car panel welding machines require separate operation to splice the panels during the welding process, resulting in low welding efficiency. Furthermore, due to the long welding distance between the panels, traditional welding fume treatment systems cannot adequately purify the welding fumes, which presents certain shortcomings in their use. Summary of the Invention

[0005] The purpose of this invention is to provide a rapid welding machine for elevator car panels, in order to solve the problems mentioned in the background art, that current elevator car panel welding machines on the market require separate operation to splice the panels during the welding process, resulting in low welding efficiency, and that traditional welding fume treatment mechanisms cannot fully purify the welding fumes due to the long welding distance between the panels.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rapid welding machine for elevator car panels, comprising a base placed in a welding workshop, an annular slide rail mounted on the outer side of the base via a lifting adjustment structure, and welding robotic arms evenly mounted on the annular slide rail; an assembly drive motor fixedly mounted inside the cavity of the base, and a limit groove formed on the upper surface of the base, with a slider slidably disposed inside the limit groove; the assembly drive motor and the slider are connected by a transmission component; a rotating seat is rotatably mounted on the outer side of the slider, and a positioning component for negative pressure adsorption positioning of the elevator car panel is disposed above the rotating seat; a hollow frame is fixedly mounted on the annular slide rail, and an annular air passage is elastically rotatably mounted on the upper end of the hollow frame, with suction pipes evenly disposed on the annular air passage; an elastic rubber component for adjusting airflow is fixedly connected between the annular air passage and the annular slide rail; and a guide component for guiding the reciprocating rotation of the annular air passage is also mounted on the base.

[0007] Preferably, the transmission component includes a drive disk fixedly installed at the output end of the assembly drive motor, and the drive disk is evenly provided with sliding grooves along the tangential direction, and the slider slides along the limiting groove and the sliding groove at the same time, while the drive disk rotates and drives the slider to slide along the limiting groove.

[0008] Preferably, the positioning component includes a lifting plate that is lifted and mounted on a rotating base, and a hydraulic cylinder is connected between the rotating base and the lifting plate, and a right-angle support structure is provided at one end of the lifting plate near the base.

[0009] Preferably, the positioning component further includes an adjusting motor fixedly installed on the outside of the lifting plate, and a first lead screw is fixedly installed at the output end of the adjusting motor. The two ends of the first lead screw have opposite thread directions, and positioning plates are symmetrically connected to the two ends of the first lead screw. The positioning plates slide and adjust against the surface of the lifting plate.

[0010] Preferably, a gear is fixedly connected to the outer side of the shaft of the rotating seat, and a rack is meshed with the outer side of the gear. The rack is fixedly installed on the surface of the base. At the same time, when the slider drives the rotating seat to slide along the limiting groove, the rotating seat rotates and stands upright synchronously.

[0011] Preferably, an adsorption cylinder is uniformly and fixedly installed through the positioning plate, and a piston plate is slidably disposed on the inner side of the adsorption cylinder with interference fit. A pull rod is fixedly installed at the lower end of the piston plate, and a spring is fixedly connected between the piston plate and the adsorption cylinder. A sleeve is sleeved on the lower outer side of the pull rod, and a connecting plate is fixedly connected to the lower ends of multiple sleeves. A pull rope is fixedly connected between the lower end of the connecting plate and the base.

[0012] Preferably, a heat-conducting cylinder is fixedly installed at the lower end of the positioning plate, and the heat-conducting cylinder is sleeved on the outside of the adsorption cylinder. An air storage bag is provided on the inner side of the heat-conducting cylinder. A driving air bag is provided between the lower end of the pull rod and the inner wall of the upper end of the sleeve. The air storage bag and the driving air bag are connected by a pipe.

[0013] Preferably, the lifting adjustment structure includes a lifting motor fixedly installed on the outside of the base, and a second lead screw is fixedly installed at the output end of the lifting motor, and the second lead screw is threadedly connected to the annular slide rail.

[0014] Preferably, the guide assembly includes a guide plate fixedly installed on the outside of the base, and the guide plate has a reciprocating guide groove, and the two continuous reciprocating sections of the guide groove have different inclination angles. At the same time, a guide post is slidably arranged on the inner side of the guide groove. The guide post is fixedly installed on the outside of the annular air passage, and the annular air passage is driven to reciprocate and rotate during lifting and adjusting. The inner diameter of the elastic rubber part is larger than the outer diameter of the hollow frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the elevator car panel rapid welding machine can realize the rapid positioning and assembly of elevator car panels of different sizes, so as to improve the overall welding efficiency and accuracy, and can effectively absorb and treat welding fumes during long-distance welding, as detailed below;

[0016] 1. It is equipped with a rotating seat, a lifting plate, a positioning plate, and an adsorption cylinder. According to the size of the elevator car panel, the motor drives the first lead screw to adjust the distance between the two positioning plates, thereby supporting different elevator car panels. By controlling the lifting and lowering adjustment of the lifting plate, it can ensure that the subsequent elevator car panels can be accurately spliced. When the rotating seat drives the elevator car panel to rotate and stand upright, the adsorption cylinder can adsorb and fix the edge position of the elevator car panel.

[0017] 2. Equipped with a circular slide rail and welding robotic arms, the circular slide rail can be raised and lowered by controlling the lifting motor, allowing multiple sets of welding robotic arms on the circular slide rail to quickly weld the joints of the elevator car panels, effectively improving welding efficiency.

[0018] 3. Equipped with an annular air passage, suction pipe, and elastic rubber parts, the annular air passage is raised and lowered by the annular slide rail, allowing the guide post on the outside of the annular air passage to slide along the guide groove. At the same time, the suction and purification equipment connected to the outside of the annular air passage is activated, causing the annular air passage to rotate back and forth. This ensures that the suction pipe can effectively remove welding fumes. Simultaneously, when the annular air passage rotates back and forth, it can drive the upper end of the elastic rubber parts to rotate synchronously, causing the elastic rubber parts to twist and return to their original position. This causes a change in the air pressure inside the elastic rubber parts, drawing in some of the escaped fumes, ensuring the full absorption and treatment of the fumes. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 This is a top view of the structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the connection structure between the lifting plate and the positioning plate of the present invention;

[0022] Figure 4 This is a schematic diagram of the connection structure between the rotating seat and the lifting plate of the present invention;

[0023] Figure 5 This is a schematic diagram of the connection structure between the positioning plate and the adsorption cylinder of the present invention;

[0024] Figure 6 This is a schematic cross-sectional view of the adsorption cylinder and sleeve of the present invention;

[0025] Figure 7 This is a top view of the rotating base structure of the present invention;

[0026] Figure 8 This is a cross-sectional view of the base and drive disk of the present invention;

[0027] Figure 9 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0028] Figure 10 This is a schematic diagram of the disassembled structure of the base and drive disk of the present invention;

[0029] Figure 11 This is a schematic diagram of the welding robotic arm installation structure of the present invention;

[0030] Figure 12This is a schematic diagram of the disassembled structure of the annular slide rail and annular air passage of the present invention.

[0031] In the diagram: 1. Base; 2. Assembled drive motor; 3. Limiting groove; 4. Drive plate; 5. Slide groove; 6. Slider; 7. Rotary seat; 8. Hydraulic cylinder; 9. Lifting plate; 10. Adjusting motor; 11. First lead screw; 12. Positioning plate; 13. Gear; 14. Rack; 15. Adsorption cylinder; 16. Piston plate; 17. Pull rod; 18. Sleeve; 19. Connecting plate; 20. Pull rope; 21. Heat conduction cylinder; 22. Air storage bag; 23. Drive air bag; 24. Lifting motor; 25. Second lead screw; 26. Circular slide rail; 27. Welding robotic arm; 28. Hollow frame; 29. ​​Circular air passage; 30. Suction pipe; 31. Elastic rubber part; 32. Guide plate; 33. Guide groove; 34. Guide column. Detailed Implementation

[0032] 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.

[0033] Example 1: Existing elevator car panel welding machines are inconvenient for fixing and splicing elevator car panels, resulting in low welding efficiency. To solve this technical problem, this example discloses the following technical content. Please refer to [link / reference]. Figures 1-10 As shown; a rapid welding machine for elevator car panels includes a base 1 placed in a welding workshop. An annular slide rail 26 is installed on the outer side of the base 1 through a lifting adjustment structure, and welding robotic arms 27 are evenly installed on the annular slide rail 26. An assembly drive motor 2 is fixedly installed inside the cavity of the base 1, and a limit groove 3 is opened on the upper surface of the base 1. A slider 6 is slidably arranged inside the limit groove 3. The assembly drive motor 2 and the slider 6 are connected by a transmission component. A rotating seat 7 is rotatably installed on the outer side of the slider 6, and a positioning component for negative pressure adsorption positioning of the elevator car panel is arranged above the rotating seat 7.

[0034] The transmission assembly includes a drive disc 4 fixedly mounted on the output end of the assembly drive motor 2. The drive disc 4 has evenly spaced tangential grooves 5, and a slider 6 slides simultaneously along both the limiting groove 3 and the grooves 5. During the rotation of the drive disc 4, the slider 6 is driven to slide along the limiting groove 3. The positioning assembly includes a lifting plate 9 mounted on a rotating base 7, with a hydraulic cylinder 8 connecting the rotating base 7 and the lifting plate 9. A right-angle support structure is provided at the end of the lifting plate 9 near the base 1. The positioning assembly also includes an adjusting motor 10 fixedly mounted on the outside of the lifting plate 9. A first lead screw 11 is fixedly mounted on the output end of the adjusting motor 10, with opposite thread directions at both ends of the first lead screw 11. Positioning plates 12 are symmetrically connected to both ends of the first lead screw 11. The rotating seat 7 is adjusted to slide along the surface of the lifting plate 9. A gear 13 is fixedly connected to the outer side of the shaft of the rotating seat 7, and a rack 14 is meshed with the outer side of the gear 13. The rack 14 is fixedly installed on the surface of the base 1. When the slider 6 drives the rotating seat 7 to slide along the limiting groove 3, the rotating seat 7 rotates and stands upright synchronously. An adsorption cylinder 15 is evenly fixedly installed through the positioning plate 12. A piston plate 16 is slidably arranged inside the adsorption cylinder 15. A pull rod 17 is fixedly installed at the lower end of the piston plate 16. A spring is fixedly connected between the piston plate 16 and the adsorption cylinder 15. A sleeve 18 is sleeved on the lower outer side of the pull rod 17. A connecting plate 19 is fixedly connected to the lower end of multiple sleeves 18. A pull rope 20 is fixedly connected between the lower end of the connecting plate 19 and the base 1.

[0035] A heat-conducting cylinder 21 is fixedly installed at the lower end of the positioning plate 12, and the heat-conducting cylinder 21 is sleeved on the outside of the adsorption cylinder 15. An air-storing bladder 22 is provided on the inner side of the heat-conducting cylinder 21. A driving air-storing bladder 23 is provided between the lower end of the pull rod 17 and the upper inner wall of the sleeve 18. The air-storing bladder 22 and the driving air-storing bladder 23 are connected by a pipe.

[0036] Based on the dimensions of the elevator car panel, the control adjustment motor 10 drives the first lead screw 11 to adjust the distance between the two positioning plates 12. The elevator car panel is then placed on the two positioning plates 12, with the positioning plates 12 supporting the edges of the elevator car panel, thus supporting different elevator car panels. The hydraulic cylinder 8 pushes the lifting plate 9 for lifting and adjustment, ensuring precise splicing of subsequent elevator car panels. The assembly drive motor 2 then drives the drive disc 4 to rotate, causing the drive disc 4 to slide along the limit groove 3 via the slide groove 5, bringing multiple rotating seats 7 closer together. During the movement of the rotating seats 7, the gear 13 on the outer side of its shaft meshes with the rack 14, driving the rotating seats 7 to synchronously rotate and erect the elevator car panels. When the elevator car panels are rotated and erected, the pull rope 20 pulls the connecting plate 19, causing the connecting plate 19 to move the sleeve 18. The sleeve 18 pulls the piston plate 16 to slide inside the adsorption cylinder 15 via the pull rod 17, allowing the adsorption cylinder 15 to adsorb and fix the edge of the elevator car panel. As welding progresses, the heat-conducting cylinder 21 conducts welding heat and heats the air storage bag 22, causing the gas temperature inside the air storage bag 22 and the driving air bag 23 to rise rapidly. The air storage bag 22 and the driving air bag 23 are filled with safety gas with a high expansion coefficient, causing the driving air bag 23 to expand and push the pull rod 17 to continue moving downward inside the sleeve 18, thereby pulling the piston plate 16 to move further. This adjusts the adsorption force inside the adsorption cylinder 15, achieving adaptive adjustment and preventing the high welding temperature from reducing the adsorption force. At the same time, the pull rope 20 adopts an adjustable length structure, such as changing the length for winding and positioning, to prevent the lifting and adjusting process of the lifting plate 9 from affecting the normal traction effect of the pull rope 20. The pull rope 20 can also be replaced with different length models.

[0037] Example 2: The technical content disclosed in this example is a further improvement based on Example 1. Existing elevator car panel welding machines, when performing long-distance welding, find it inconvenient to effectively absorb and treat welding fumes. To further solve this technical problem, this example discloses the following technical content: Figures 1-2 and Figures 11-12 As shown; a hollow frame 28 is fixedly installed on the annular slide rail 26, and an annular air passage 29 is elastically rotatably installed on the upper end of the hollow frame 28. Air intake pipes 30 are evenly arranged on the annular air passage 29. An elastic rubber part 31 for adjusting air flow is fixedly connected between the annular air passage 29 and the annular slide rail 26. A guide component for guiding and driving the annular air passage 29 to reciprocate is also installed on the base 1.

[0038] The lifting and adjusting structure includes a lifting motor 24 fixedly installed on the outside of the base 1, and a second lead screw 25 fixedly installed at the output end of the lifting motor 24. The second lead screw 25 is threadedly connected to the annular slide rail 26. The guide assembly includes a guide plate 32 fixedly installed on the outside of the base 1. The guide plate 32 has a reciprocating guide groove 33. The two continuous reciprocating sections of the guide groove 33 have different inclination angles. At the same time, a guide post 34 is slidably arranged on the inner side of the guide groove 33. The guide post 34 is fixedly installed on the outside of the annular air passage 29. When the annular air passage 29 is lifted and adjusted, it is driven to reciprocate and rotate. The inner diameter of the elastic rubber part 31 is larger than the outer diameter of the hollow frame 28.

[0039] By controlling the lifting motor 24, the second lead screw 25 and the annular slide rail 26 can be threaded together, driving the annular slide rail 26 to adjust its height. This allows the multiple welding robotic arms 27 on the annular slide rail 26 to quickly weld the joints of the elevator car panels, effectively improving welding efficiency.

[0040] As the annular slide rail 26 drives the annular air passage 29 to rise and fall, the guide post 34 on the outside of the annular air passage 29 can slide along the guide groove 33. At the same time, the suction and purification equipment connected to the outside of the annular air passage 29 is activated, causing the annular air passage 29 to rotate back and forth. This ensures that the suction pipe 30 can effectively remove welding fumes. When the annular air passage 29 rotates back and forth, it can drive the upper end of the elastic rubber part 31 to rotate synchronously. This causes the elastic rubber part 31 to twist and return to its original position, resulting in a change in the air pressure inside the elastic rubber part 31. Due to the different inclination angles of the two continuous folding sections of the guide groove 33, the annular air passage 29 can drive the elastic rubber part 31 to slowly twist and quickly rotate and reset. Slow twisting can reduce the speed at which the gas inside the elastic rubber part 31 flows to the outside, while after rapid reset, some of the escaped fumes can be sucked in through the change in air pressure, further ensuring the full absorption and treatment of fumes.

[0041] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rapid welding machine for elevator car panels, comprising a base (1) placed in a welding workshop, wherein an annular slide rail (26) is installed on the outer side of the base (1) through a lifting adjustment structure, and welding robotic arms (27) are evenly installed on the annular slide rail (26). Its features are, The assembly drive motor (2) is fixedly installed inside the cavity of the base (1), and a limit groove (3) is opened on the upper surface of the base (1). A slider (6) is slidably arranged inside the limit groove (3). The assembly drive motor (2) and the slider (6) are connected by a transmission component. A rotating seat (7) is rotatably installed on the outside of the slider (6). A positioning component for negative pressure adsorption positioning of the elevator car plate is provided above the rotating seat (7). A hollow frame (28) is fixedly installed on the annular slide rail (26). An annular air passage (29) is elastically rotatably installed at the upper end of the hollow frame (28). An air suction pipe (30) is evenly arranged on the annular air passage (29). An elastic rubber part (31) for adjusting air flow is fixedly connected between the annular air passage (29) and the annular slide rail (26). A guide component for guiding the annular air passage (29) to reciprocate is also installed on the base (1). The transmission assembly includes a drive disk (4) fixedly installed at the output end of the assembly drive motor (2), and the drive disk (4) is evenly provided with sliding grooves (5) along the tangential direction, and the slider (6) slides along the limiting groove (3) and the sliding groove (5) at the same time. During the rotation of the drive disk (4), the slider (6) is driven to slide along the limiting groove (3). The positioning component includes a lifting plate (9) that is lifted and mounted on a rotating seat (7), and a hydraulic cylinder (8) is connected between the rotating seat (7) and the lifting plate (9), and a right-angle support structure is provided at one end of the lifting plate (9) near the base (1); The positioning assembly also includes an adjustment motor (10) fixedly installed on the outside of the lifting plate (9), and a first lead screw (11) is fixedly installed at the output end of the adjustment motor (10), and the two ends of the first lead screw (11) have opposite threads. At the same time, the two ends of the first lead screw (11) are symmetrically connected to positioning plates (12), and the positioning plates (12) slide and adjust against the surface of the lifting plate (9).

2. The rapid welding machine for elevator car panels according to claim 1, characterized in that: The rotating seat (7) has a gear (13) fixedly connected to the outer side of its shaft, and a rack (14) meshes with the outer side of the gear (13). The rack (14) is fixedly installed on the surface of the base (1). At the same time, when the slider (6) drives the rotating seat (7) to slide along the limiting groove (3), the rotating seat (7) rotates and stands upright synchronously.

3. The rapid welding machine for elevator car panels according to claim 1, characterized in that: An adsorption cylinder (15) is uniformly and fixedly installed on the positioning plate (12), and a piston plate (16) is slidably and interference-fitted on the inner side of the adsorption cylinder (15). A pull rod (17) is fixedly installed at the lower end of the piston plate (16), and a spring is fixedly connected between the piston plate (16) and the adsorption cylinder (15). A sleeve (18) is sleeved on the lower outer side of the pull rod (17), and a connecting plate (19) is fixedly connected to the lower end of multiple sleeves (18). A pull rope (20) is fixedly connected between the lower end of the connecting plate (19) and the base (1).

4. The rapid welding machine for elevator car panels according to claim 3, characterized in that: The lower end of the positioning plate (12) is also fixedly installed with a heat-conducting cylinder (21), and the heat-conducting cylinder (21) is sleeved on the outside of the adsorption cylinder (15). An air-storing bladder (22) is provided on the inner side of the heat-conducting cylinder (21). A driving air bladder (23) is provided between the lower end of the pull rod (17) and the upper inner wall of the sleeve (18). The air-storing bladder (22) and the driving air bladder (23) are connected by a pipe.

5. The rapid welding machine for elevator car panels according to claim 1, characterized in that: The lifting adjustment structure includes a lifting motor (24) fixedly installed on the outside of the base (1), and a second lead screw (25) is fixedly installed at the output end of the lifting motor (24), and the second lead screw (25) is threadedly connected to the annular slide rail (26).

6. The rapid welding machine for elevator car panels according to claim 1, characterized in that: The guide assembly includes a guide plate (32) fixedly installed on the outside of the base (1), and the guide plate (32) is provided with a reciprocating folding guide groove (33), and the two consecutive folding sections of the guide groove (33) have different inclination angles. Meanwhile, a guide post (34) is slidably provided on the inner side of the guide groove (33). The guide post (34) is fixedly installed on the outside of the annular air passage (29), and the annular air passage (29) is driven to reciprocate and rotate when it is raised and lowered. The inner diameter of the elastic rubber part (31) is larger than the outer diameter of the hollow frame (28).

Images