Laser welding equipment for middle frame processing

Abstract

This invention relates to the field of laser welding technology and discloses a laser welding device for mid-frame processing. The device includes a gantry frame, with a welding mechanism mounted on one side. The welding mechanism includes a mounting cylinder, with a laser welding machine fixedly connected to one side of the mounting cylinder. A plastic part is mounted at the bottom of the laser welding machine, and two metal plates are mounted on the upper surface of the plastic part. A transverse mechanism is mounted at the top of the gantry frame to align the laser welding machine with the metal plates. A feeding mechanism is mounted at the bottom of the gantry frame to transport the plastic part. A calibration mechanism is mounted on the inner wall of one side of the mounting cylinder, including two cameras and multiple positioning QR codes. By controlling a first cylinder to lower the output end, the two cameras are lowered, and the mounting base presses against the top of the metal plates, making the metal plates adhere tightly to the upper surface of the plastic part, eliminating gaps between the plastic part and the metal plates, and preventing incomplete welds.

Description

Technical Field

[0001] This invention relates to the field of laser welding technology, specifically to a laser welding device for processing a mid-frame. Background Technology

[0002] Since its inception in the 20th century, laser welding technology has experienced rapid development. Initially, laser welding was mainly used in the aerospace and military fields. Due to its high precision and low heat-affected zone, it has gradually been introduced into industries such as automobiles, electronics, and medicine. With the advancement of fiber lasers and high-energy laser technology, the efficiency and quality of laser welding have been significantly improved. Modern laser welding equipment not only has automated and intelligent functions, but has also developed a variety of welding modes, such as laser transmission welding, laser spot welding, and laser arc welding.

[0003] In the laser welding process between plastic and metal parts, existing equipment cannot accurately and automatically locate the weld point, making it difficult to precisely eliminate the gap between them during welding. This gap not only affects the strength and sealing of the weld, but also the equipment vibration increases the gap between the plastic and metal parts, causing welding misalignment and affecting the overall performance of the product. In addition, the control of welding temperature during laser welding is relatively complex. Excessive temperature may cause the plastic parts to melt and deform, or even damage the equipment, failing to meet actual needs.

[0004] The inventors of this application discovered in their research that the core defect of the aforementioned prior art is that the equipment cannot accurately and automatically find the welding point, resulting in gaps between the plastic and the metal parts, affecting the welding strength and sealing performance, while the equipment vibration exacerbates the misalignment. Summary of the Invention

[0005] This invention provides a laser welding device for mid-frame processing, which solves the problem that the device cannot accurately and automatically find the welding point, resulting in gaps between the plastic and metal parts, affecting the welding strength and sealing, and at the same time, the equipment vibration aggravates the misalignment, thereby achieving the effect of eliminating gaps between plastic parts and metal sheets.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a laser welding equipment for processing a mid-frame, including a gantry frame, a welding mechanism installed on one side of the gantry frame, the welding mechanism including a mounting cylinder, a laser welding machine fixedly connected to one side of the mounting cylinder, a plastic part provided at the bottom of the laser welding machine, and two metal sheets provided on the upper surface of the plastic part;

[0007] The top of the gantry is equipped with a transverse mechanism, which is used to align the laser welding machine with the metal sheet;

[0008] A feeding mechanism is installed at the bottom of the gantry frame, which is used to transport plastic parts;

[0009] A calibration mechanism is installed on one inner wall of the mounting cylinder. The calibration mechanism includes two cameras and multiple positioning QR codes. The two cameras capture images from two angles, and the position of the metal piece is located by the multiple positioning QR codes in the images.

[0010] A reference mechanism is installed on the inner wall of the other side of the mounting cylinder. The reference mechanism is used to provide a welding reference for the calibration mechanism and the welding mechanism.

[0011] The top of the feeding mechanism is equipped with a clamping mechanism, which assists in clamping the plastic parts.

[0012] The traversing mechanism includes a fixed shell fixedly connected to the upper surface of the gantry frame. A traversing motor is fixedly connected to the inner wall of one end of the fixed shell. A first threaded rod is fixedly connected to one end of the output shaft of the traversing motor. A traversing block is threadedly connected to one end of the first threaded rod. The traversing block is fixedly connected to the mounting cylinder.

[0013] The feeding mechanism includes two mounting shells located at the bottom of the gantry frame. One end of each mounting shell is fixedly connected to a feeding motor, and one end of each feeding motor output shaft is fixedly connected to a second threaded rod.

[0014] One end of one of the second threaded rods is threadedly connected to a second feeding plate, and one end of the other second threaded rod is threadedly connected to a first feeding plate. The upper surfaces of the first feeding plate and the second feeding plate are respectively fixedly connected to a first limiting block and a second limiting block.

[0015] By adopting the above technical solution, the worker places a plastic part on the upper surface of the second feeding plate. The feeding motor rotates, driving the second feeding plate and the plastic part to move to the bottom of the laser welding machine. The laser welding machine welds the metal sheet to the plastic part. During this process, the worker places another plastic part on the first feeding plate. The second feeding plate transports the welded plastic part to the worker, and the first feeding plate moves the other plastic part to the bottom of the gantry to wait for welding. This improves welding efficiency.

[0016] In a preferred embodiment, the calibration mechanism further includes a first cylinder fixedly connected to the inner wall of one side of the mounting cylinder, a welding frame fixedly connected to the output end of the bottom of the first cylinder, a mounting base fixedly connected to one end of the welding frame, cameras inserted into the top of both ends of the mounting base, and multiple positioning QR codes set on the bottom inner wall of the mounting base.

[0017] An air suction plate is provided on one side of the mounting base. An air inlet pipe is inserted into one side of the air suction plate. An air pump is provided at one end of the air inlet pipe. An exhaust pipe is inserted into the top of the air pump. The air pump is fixedly connected to the inner wall of one side of the mounting cylinder.

[0018] In a preferred embodiment, the reference mechanism includes a second cylinder fixedly connected to the inner wall of the other side of the mounting cylinder. An adjusting frame is fixedly connected to the output end of the bottom of the second cylinder. An adjusting threaded rod is threadedly connected to the bottom of the adjusting frame. A guide rod is slidably connected to the bottom of the adjusting frame at the bottom position of the adjusting threaded rod. A pressure sensor is provided at one end of the adjusting threaded rod.

[0019] The clamping mechanism includes a third cylinder fixedly connected to the upper surface of the first and second feeding plates. The output end of the third cylinder is fixedly connected to a clamping frame, and the bottom end of the clamping frame is rotatably connected to a pre-tightening block.

[0020] A pre-tensioning spring is provided on the outer wall of the pre-tensioning block, a sliding block is slidably connected to the top of the clamping frame, a return spring is provided at the bottom of the sliding block, and a pressure plate is fixedly connected to the top of the sliding block.

[0021] The pre-tightening block has a moving buckle on one side of its top, a movable buckle on one side of the sliding block near the moving buckle, and a pressing rod on one side of the welding frame.

[0022] This invention provides a laser welding device for mid-frame processing. It has the following advantages:

[0023] 1. This invention controls the first cylinder to drive the output end to descend, thereby driving the mounting base and two cameras to descend until the mounting base abuts against the top of the pressing metal sheet, so that the metal sheet is tightly attached to the upper surface of the plastic part, eliminating the gap between the plastic part and the metal sheet, and thus avoiding the effect of poor soldering.

[0024] 2. This invention uses a transverse motor to rotate and drive the pressure sensor and laser welding machine to move to the right until the pressure sensor detects a pressure signal. At this point, the transverse motor is turned off, causing the laser welding machine and pressure sensor to stop moving. The program sets the position of the laser welding machine at this point as the first metal sheet welding position. By comparing this position with the data preset in the program, the data in the welding program is corrected, thereby optimizing the welding trajectory.

[0025] 3. This invention uses two cameras to capture images of the metal sheet's position, identifies the position using image processing technology, and employs multiple positioning QR codes to accurately determine the metal sheet's location. Welding proceeds when the metal sheet is correctly positioned, and welding stops when the metal sheet is incorrectly positioned, thus protecting the equipment.

[0026] 4. This invention uses an air intake pipe and a welding frame to draw in air. The welding frame draws in the gas generated by the laser heating of the plastic part and discharges it outdoors through an exhaust pipe, thus protecting the safety of workers.

[0027] 5. After welding is completed, control the output end of the third cylinder and the clamping frame to return to their original positions, so that the pre-tightening block, under the action of the pre-tightening spring, is pressed against one corner of the plastic part again. At this time, the pre-tightening block is rotated and fixed by the force of the pre-tightening spring. The plastic part is then sent to the worker again by the first or second feeding plate. The worker can easily remove the plastic part, which shortens the time for the third cylinder to release the plastic part and prevents the plastic part from falling off the equipment during the conveying process. Attached Figure Description

[0028] Figure 1 This is an overall perspective view of the present invention;

[0029] Figure 2 This is a schematic diagram of the transverse movement mechanism of the present invention;

[0030] Figure 3 This is a schematic diagram of the feeding mechanism of the present invention;

[0031] Figure 4 This is a schematic diagram of the welding mechanism of the present invention;

[0032] Figure 5 This is a schematic diagram of the reference mechanism of the present invention;

[0033] Figure 6 This is a partial schematic diagram of the present invention;

[0034] Figure 7 This is a schematic diagram of the mounting base of the present invention;

[0035] Figure 8 This is a schematic diagram of the extrusion rod of the present invention;

[0036] Figure 9 This is a schematic diagram of the preload block of the present invention;

[0037] Figure 10 This is a schematic diagram of the sliding block of the present invention.

[0038] The components include: 1. Gantry frame; 2. Fixed housing; 3. First feeding plate; 4. Plastic parts; 5. Mounting housing; 6. Second feeding plate; 7. Mounting cylinder; 8. Transverse motor; 9. First threaded rod; 10. Transverse block; 11. Feeding motor; 12. Second threaded rod; 13. Laser welding machine; 14. Metal sheet; 15. First limit block; 16. Second limit block; 17. First cylinder; 18. Second cylinder; 19. Air pump; 20. Suction plate. ; 21. Pressure sensor; 22. Guide rod; 23. Adjusting threaded rod; 24. Adjusting bracket; 25. Intake pipe; 26. Welding bracket; 27. Mounting base; 28. Camera; 29. ​​Exhaust pipe; 30. Positioning QR code; 31. Extrusion rod; 32. Third cylinder; 33. Clamping bracket; 34. Preload block; 35. Preload spring; 36. Motion buckle; 37. Pressure plate; 38. Sliding block; 39. Return spring; 40. Moving buckle. Detailed Implementation

[0039] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. 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.

[0040] Reference Figures 1-10 This invention provides a laser welding equipment for processing a mid-frame, including a gantry frame 1. A welding mechanism is installed on one side of the gantry frame 1. The welding mechanism includes a mounting cylinder 7. A laser welding machine 13 is fixedly connected to one side of the mounting cylinder 7. A plastic part 4 is provided at the bottom of the laser welding machine 13. Two metal sheets 14 are provided on the upper surface of the plastic part 4.

[0041] A transverse mechanism is installed on the top of the gantry frame 1, which is used to align the laser welding machine 13 with the metal sheet 14;

[0042] A feeding mechanism is installed at the bottom of the gantry frame 1, which is used to transport plastic parts 4;

[0043] A calibration mechanism is installed on one inner wall of the mounting cylinder 7. The calibration mechanism includes two cameras 28 and multiple positioning QR codes 30. The two cameras 28 take images from two angles, and the multiple positioning QR codes 30 in the images are used to locate the position of the metal piece 14.

[0044] A reference mechanism is installed on the inner wall of the other side of the mounting cylinder 7. The reference mechanism is used to provide a reference for welding to the calibration mechanism and the welding mechanism.

[0045] A clamping mechanism is installed on the top of the feeding mechanism to assist in clamping the plastic part 4.

[0046] The transverse mechanism includes a fixed housing 2 fixedly connected to the upper surface of the gantry frame 1. A transverse motor 8 is fixedly connected to the inner wall of one end of the fixed housing 2. A first threaded rod 9 is fixedly connected to one end of the output shaft of the transverse motor 8. A transverse block 10 is threadedly connected to one end of the first threaded rod 9. The transverse block 10 is fixedly connected to the mounting cylinder 7.

[0047] The feeding mechanism includes two mounting shells 5 located at the bottom of the gantry frame 1. One end of each mounting shell 5 is fixedly connected to a feeding motor 11, and one end of the output shaft of each feeding motor 11 is fixedly connected to a second threaded rod 12.

[0048] One end of a second threaded rod 12 is threadedly connected to a second feeding plate 6, and one end of another second threaded rod 12 is threadedly connected to a first feeding plate 3. The upper surfaces of the first feeding plate 3 and the second feeding plate 6 are respectively fixedly connected to a first limiting block 15 and a second limiting block 16.

[0049] In this embodiment, the worker places a plastic part 4 on the upper surface of the second feeding plate 6. The feeding motor 11 rotates, driving the second feeding plate 6 and the plastic part 4 to move to the bottom of the laser welding machine 13. The laser welding machine 13 welds the metal sheet 14 to the plastic part 4 together. During this process, the worker places another plastic part 4 on the first feeding plate 3. The second feeding plate 6 transports the welded plastic part 4 to the worker, and the first feeding plate 3 moves the other plastic part 4 to the bottom of the gantry 1 to wait for welding, which improves the welding efficiency.

[0050] Reference Figure 1 , Figure 4 , Figure 6 and Figure 7 In a preferred embodiment, the calibration mechanism further includes a first cylinder 17 fixedly connected to the inner wall of one side of the mounting cylinder 7. A welding frame 26 is fixedly connected to the output end of the bottom of the first cylinder 17. A mounting base 27 is fixedly connected to one end of the welding frame 26. Cameras 28 are respectively inserted into the top of both ends of the mounting base 27. Multiple positioning QR codes 30 are set on the bottom inner wall of the mounting base 27.

[0051] An air suction plate 20 is provided on one side of the mounting base 27. An air inlet pipe 25 is inserted into one side of the air suction plate 20. An air pump 19 is provided at one end of the air inlet pipe 25. An exhaust pipe 29 is inserted into the top of the air pump 19. The air pump 19 is fixedly connected to the inner wall of one side of the mounting cylinder 7.

[0052] It should be explained that the air pump 19 and the cylinder are existing technologies, so I will not go into details.

[0053] In this embodiment, the distance between the two metal pieces 14 on the plastic part 4 is set by the program, and the position of the first feeding plate 3 or the upper surface plastic part 4 is set by the program. The transverse motor 8 is controlled by the program to rotate, which drives the first threaded rod 9 to rotate, thereby causing the transverse block 10 to move left and right, driving the laser welding machine 13 to move to the left side of the upper surface plastic part 4 of the second feeding plate 6. The output end is lowered by controlling the second cylinder 18, thereby causing the adjusting frame 24 and the pressure sensor 21 to be lowered to the height of the plastic part 4 at the same time.

[0054] Furthermore, the transverse motor 8 rotates to drive the pressure sensor 21 and the laser welding machine 13 to move to the right until the pressure sensor 21 detects a pressure signal. At this point, the transverse motor 8 is turned off, causing the laser welding machine 13 and the pressure sensor 21 to stop moving. The program then sets the position of the laser welding machine 13 at this point as the welding position of the first metal sheet 14. By comparing this position with the data preset in the program, the data in the welding program is corrected, thereby optimizing the welding trajectory.

[0055] In this embodiment, the first cylinder 17 is controlled to drive the output end to descend, thereby driving the mounting base 27 and the two cameras 28 to descend until the mounting base 27 abuts against the top of the pressing metal sheet 14, so that the metal sheet 14 is tightly attached to the upper surface of the plastic part 4, eliminating the gap between the plastic part 4 and the metal sheet 14, thus avoiding the effect of poor soldering.

[0056] Furthermore, the position of the metal sheet 14 is captured by two cameras 28, and the position of the metal sheet 14 is identified by image equipment technology. The position of the metal sheet 14 is accurately determined by the design of multiple positioning QR codes 30. Welding is carried out when the position of the metal sheet 14 is correct, and welding is stopped when the position of the metal sheet 14 is incorrect, which has the effect of protecting the equipment. During the welding process, the air pump 19 is started. The air pump 19 draws air through the air inlet pipe 25 and the welding frame 26. The welding frame 26 draws in the gas generated by the laser heating of the plastic part 4 and discharges it outdoors through the exhaust pipe 29, which has the effect of protecting the safety of workers.

[0057] Then, by moving the laser welding machine 13 and the pressure sensor 21, the pressure sensor 21 is raised to separate from the plastic part 4, and another metal piece 14 is automatically welded based on the data in the automatic program.

[0058] Reference Figure 1 , Figure 5 , Figure 6 and Figure 7In a preferred embodiment, the reference mechanism includes a second cylinder 18 fixedly connected to the inner wall of the other side of the mounting cylinder 7. An adjustment frame 24 is fixedly connected to the output end of the bottom of the second cylinder 18. An adjustment threaded rod 23 is threadedly connected to the bottom of the adjustment frame 24. A guide rod 22 is slidably connected to the bottom of the adjustment frame 24 at the bottom position of the adjustment threaded rod 23. A pressure sensor 21 is provided at one end of the adjustment threaded rod 23.

[0059] The clamping mechanism includes a third cylinder 32 fixedly connected to the upper surface of the first feeding plate 3 and the second feeding plate 6. The output end of the third cylinder 32 is fixedly connected to a clamping frame 33, and the bottom end of the clamping frame 33 is rotatably connected to a pre-tightening block 34.

[0060] A pre-tensioning spring 35 is provided on the outer wall of the pre-tensioning block 34, a sliding block 38 is slidably connected to the top of the clamping frame 33, a return spring 39 is provided at the bottom of the sliding block 38, and a pressure plate 37 is fixedly connected to the top of the sliding block 38.

[0061] A moving buckle 36 is provided on one side of the top of the pre-tightening block 34, a moving buckle 40 is provided on one side of the sliding block 38 near the moving buckle 36, and a pressing rod 31 is provided on one side of the welding frame 26.

[0062] In this embodiment, after welding the plastic part 4 on the upper surface of the second feeding plate 6, the moving laser welding machine 13 also welds the plastic part 4 on the upper surface of the first feeding plate 3. When the plastic part 4 is placed on the upper surface of the first feeding plate 3 or the second feeding plate 6, the position of the plastic part 4 is restricted by the first limiting block 15 and the second limiting block 16. Under the elastic force of the pre-tightening spring 35, the pre-tightening block 34 abuts against one corner of the plastic part 4, which achieves the effect of stabilizing the position of the plastic part 4.

[0063] In this embodiment, the third cylinder 32 is activated to drive the clamping frame 33 and the pre-tightening block 34 to continue to squeeze the plastic part 4, so that the plastic part 4 is completely and stably clamped on the upper surface of the first feeding plate 3 or the second feeding plate 6, preventing equipment vibration from affecting the welding process. At the same time, when the second metal sheet 14 on the same plastic part 4 is welded, the welding frame 26 drives the extrusion rod 31 to squeeze the pressure plate 37, causing the sliding block 38 and the moving buckle 40 to slide downward, thereby causing the sliding block 38 to squeeze the return spring 39, and causing the moving buckle 36 and the moving buckle 40 to separate.

[0064] Furthermore, after welding is completed, the output end of the third cylinder 32 and the clamping frame 33 are restored to their original positions, so that the pre-tightening block 34, under the elastic force of the pre-tightening spring 35, is pressed against one corner of the plastic part 4 again. At this time, the pre-tightening block 34 is rotated and fixed by the elastic force of the pre-tightening spring 35. The plastic part 4 is then sent to the worker again by the first feeding plate 3 or the second feeding plate 6. The worker can easily remove the plastic part 4, which shortens the time for the third cylinder 32 to release the plastic part 4 and prevents the plastic part 4 from falling off the equipment during the conveying process.

[0065] Workflow: A worker places a plastic part 4 on the upper surface of the second feeding plate 6. The feeding motor 11 rotates, moving the second feeding plate 6 and the plastic part 4 to the bottom of the laser welding machine 13. The laser welding machine 13 welds the metal sheet 14 to the plastic part 4. During this process, the worker places another plastic part 4 on the first feeding plate 3. The second feeding plate 6 transports the welded plastic part 4 to the worker, and the first feeding plate 3 moves the other plastic part 4 to the bottom of the gantry 1 to await welding. This improves welding efficiency. During welding, the distance between the two metal sheets 14 on the plastic part 4 and the position of the first feeding plate 3 or the upper surface of the plastic part 4 are set by the program. The program controls the rotation of the transverse motor 8 to drive the plastic part 4 to the second feeding plate 6. The first threaded rod 9 rotates, causing the transverse block 10 to move left and right, moving the laser welding machine 13 to the left side of the plastic part 4 on the upper surface of the second feeding plate 6. The second cylinder 18 is then controlled to lower the output end, simultaneously lowering the adjusting frame 24 and the pressure sensor 21 to the height of the plastic part 4. The transverse motor 8 rotates, causing the pressure sensor 21 and the laser welding machine 13 to move to the right until a pressure signal is detected on the pressure sensor 21. At this point, the transverse motor 8 is turned off, stopping the laser welding machine 13 and the pressure sensor 21. The program then sets the current position of the laser welding machine 13 as the welding position for the first metal sheet 14. By comparing this position with the pre-set data in the program, the data in the welding program is corrected, thus optimizing the welding process. The trajectory effect is achieved by controlling the first cylinder 17 to lower the output end, thereby lowering the mounting base 27 and the two cameras 28 until the mounting base 27 abuts against the top of the pressing metal sheet 14, making the metal sheet 14 fit tightly against the upper surface of the plastic part 4, eliminating the gap between the plastic part 4 and the metal sheet 14, thus preventing cold solder joints. The two cameras 28 capture images of the position of the metal sheet 14, and the position of the metal sheet 14 is identified by image equipment technology. Through the design of multiple positioning QR codes 30, the position of the metal sheet 14 is accurately determined. If the position of the metal sheet 14 is correct, welding is performed; if the position of the metal sheet 14 is incorrect, welding is stopped, thus protecting the equipment. During the welding process, the air pump 19 is started, and the air pump 19 uses the air intake pipe 25 to... The welding frame 26 draws in the gas generated by the laser heating the surface of the plastic part 4 and exhausts it outdoors through the exhaust pipe 29, thus protecting the safety of the workers. Then, by moving the laser welding machine 13 and the pressure sensor 21, the pressure sensor 21 is raised and separated from the plastic part 4. Based on the data in the automatic program, another metal sheet 14 is automatically welded. After welding the plastic part 4 on the upper surface of the second feeding plate 6, the moving laser welding machine 13 also welds the plastic part 4 on the upper surface of the first feeding plate 3. When the plastic part 4 is placed on the upper surface of the first feeding plate 3 or the second feeding plate 6, the position of the plastic part 4 is restricted by the first limiting block 15 and the second limiting block 16. The pre-tightening block 34 is under the elastic force of the pre-tightening spring 35.The pre-tightening block 34 abuts against one corner of the plastic part 4, stabilizing its position. Then, by activating the third cylinder 32, the clamping frame 33 and the pre-tightening block 34 continue to compress the plastic part 4, ensuring it is completely and stably clamped to the upper surface of the first feeding plate 3 or the second feeding plate 6. This prevents equipment vibration from affecting the welding process. Simultaneously, when the second metal sheet 14 on the same plastic part 4 is welded, the welding frame 26 drives the extrusion rod 31 to press against the pressure plate 37, causing the sliding block 38 and the moving buckle 40 to slide downwards. This causes the sliding block 38 to compress the return spring 3. 9. Separate the moving buckle 36 and the movable buckle 40. After welding, control the output end of the third cylinder 32 and the clamping frame 33 to return to their original positions. Under the elastic force of the pre-tensioning spring 35, the pre-tensioning block 34 is pressed against one corner of the plastic part 4 again. At this time, the pre-tensioning block 34 is rotated and fixed only by the elastic force of the pre-tensioning spring 35. The plastic part 4 is then sent back to the worker via the first feeding plate 3 or the second feeding plate 6. The worker can easily remove the plastic part 4, shortening the time for the third cylinder 32 to release the plastic part 4 and preventing the plastic part 4 from falling off the equipment during transport.

[0066] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser welding device for processing a mid-frame, comprising a gantry (1), characterized in that, A welding mechanism is installed on one side of the gantry (1). The welding mechanism includes an installation cylinder (7). A laser welding machine (13) is fixedly connected to one side of the installation cylinder (7). A plastic part (4) is provided at the bottom of the laser welding machine (13). Two metal sheets (14) are provided on the upper surface of the plastic part (4). The top of the gantry (1) is equipped with a transverse mechanism for aligning the laser welding machine (13) with the metal sheet (14). The bottom of the gantry (1) is equipped with a feeding mechanism, which is used to transport plastic parts (4). A calibration mechanism is installed on one inner wall of the mounting cylinder (7). The calibration mechanism includes two cameras (28) and multiple positioning QR codes (30). The two cameras (28) capture images from two angles, and the multiple positioning QR codes (30) in the images are used to locate the position of the metal piece (14). A reference mechanism is installed on the inner wall of the other side of the mounting cylinder (7). The reference mechanism is used to provide a reference for welding to the calibration mechanism and the welding mechanism. The top of the feeding mechanism is equipped with a clamping mechanism, which assists in clamping the plastic parts (4).

2. The laser welding equipment for mid-frame processing according to claim 1, characterized in that, The transverse mechanism includes a fixed shell (2) fixedly connected to the upper surface of the gantry (1), a transverse motor (8) fixedly connected to the inner wall of one end of the fixed shell (2), a first threaded rod (9) fixedly connected to one end of the output shaft of the transverse motor (8), a transverse block (10) threadedly connected to one end of the first threaded rod (9), and a transverse block (10) fixedly connected to the mounting cylinder (7).

3. The laser welding equipment for mid-frame processing according to claim 2, characterized in that, The feeding mechanism includes two mounting shells (5) located at the bottom of the gantry (1). One end of each mounting shell (5) is fixedly connected to a feeding motor (11), and one end of each feeding motor (11) output shaft is fixedly connected to a second threaded rod (12).

4. The laser welding equipment for mid-frame processing according to claim 3, characterized in that, One end of one of the second threaded rods (12) is threadedly connected to a second feeding plate (6), and one end of the other second threaded rod (12) is threadedly connected to a first feeding plate (3). The upper surfaces of the first feeding plate (3) and the second feeding plate (6) are respectively fixedly connected to a first limiting block (15) and a second limiting block (16).

5. The laser welding equipment for mid-frame processing according to claim 4, characterized in that, The calibration mechanism also includes a first cylinder (17) fixedly connected to the inner wall of one side of the mounting cylinder (7). A welding frame (26) is fixedly connected to the output end of the bottom of the first cylinder (17). A mounting base (27) is fixedly connected to one end of the welding frame (26). Cameras (28) are inserted into the top of both ends of the mounting base (27). Multiple positioning QR codes (30) are set on the bottom inner wall of the mounting base (27).

6. The laser welding equipment for mid-frame processing according to claim 5, characterized in that, An air suction plate (20) is provided on one side of the mounting base (27). An air inlet pipe (25) is inserted into one side of the air suction plate (20). An air pump (19) is provided at one end of the air inlet pipe (25). An exhaust pipe (29) is inserted into the top of the air pump (19). The air pump (19) is fixedly connected to the inner wall of one side of the mounting cylinder (7).

7. The laser welding equipment for mid-frame processing according to claim 1, characterized in that, The reference mechanism includes a second cylinder (18) fixedly connected to the inner wall of the other side of the mounting cylinder (7). An adjustment frame (24) is fixedly connected to the output end of the second cylinder (18). An adjustment threaded rod (23) is threadedly connected to the bottom of the adjustment frame (24). A guide rod (22) is slidably connected to the bottom of the adjustment frame (24) at the bottom position of the adjustment threaded rod (23). A pressure sensor (21) is provided at one end of the adjustment threaded rod (23).

8. A laser welding device for mid-frame processing according to claim 7, characterized in that, The clamping mechanism includes a third cylinder (32) fixedly connected to the upper surface of the first feeding plate (3) and the second feeding plate (6). The output end of the third cylinder (32) is fixedly connected to a clamping frame (33), and the bottom end of the clamping frame (33) is rotatably connected to a pre-tightening block (34).

9. A laser welding device for mid-frame processing according to claim 8, characterized in that, A pre-tensioning spring (35) is provided on the outer wall of the pre-tensioning block (34), a sliding block (38) is slidably connected to the top of the clamping frame (33), a return spring (39) is provided at the bottom of the sliding block (38), and a pressure plate (37) is fixedly connected to the top of the sliding block (38).

10. A laser welding device for mid-frame processing according to claim 9, characterized in that, The pre-tightening block (34) has a moving buckle (36) on one side of its top, and a moving buckle (40) is provided on one side of the sliding block (38) near the moving buckle (36). A pressing rod (31) is provided on one side of the welding frame (26).

Images