Laser brazing apparatus and method

Abstract

The application discloses a kind of laser brazing equipment and method thereof, it is related to laser welding technical field, its technical solutions are: including workbench, workbench is equipped with XYZ axis transfer platform, XYZ axis transfer platform side is fixedly provided with welding machine box, welding head is fixedly arranged at the bottom of welding machine box, the side of welding machine box is equipped with wire pulling mechanism, and the top of workbench is equipped with fixed mechanism;Wire pulling mechanism includes wire reel, and wire reel is arranged in the inside of welding machine box, and welding wire is arranged on the side of wire reel, and sleeve pipe is fixedly arranged at the bottom of welding machine box, and wire pulling shell is fixedly arranged on the side of sleeve pipe, and welding wire penetrates sleeve pipe and wire pulling shell, and wire pulling assembly is arranged in the inside of wire pulling shell, and wire pulling assembly includes two transmission shafts, and the side wall of wire pulling shell is connected by bearing, improves the precision of wire feeding, facilitates welding head to carry out welding, improves traction degree, makes the speed of welding wire leading and welding speed level, makes welding positioning precision improve, improves welding efficiency.

Description

Technical Field

[0001] This invention relates to the field of laser welding technology, and more specifically to a laser brazing device and method. Background Technology

[0002] The main characteristic of laser brazing is that it uses the high energy density of lasers to achieve rapid heating of local or micro-areas to complete the brazing process.

[0003] In existing laser brazing, the welding wire is fed by a conveyor roller. Prolonged rotation and conveying can cause wear on the conveyor roller, reducing the friction between the conveyor roller and the welding wire. This results in insufficient wire feeding force, the wire lead-out speed cannot keep up with the welding speed, and the wire feeding accuracy is not high. Consequently, the welding positioning accuracy is poor, affecting the welding efficiency. Furthermore, existing welding equipment is not convenient for fixing curved workpieces, which are prone to displacement, affecting the welding process. Summary of the Invention

[0004] To address this issue, the present invention provides a laser brazing device and method to solve the problems of the welding wire being transported by a conveyor roller. Prolonged rotation of the conveyor roller leads to wear and reduced friction between the roller and the welding wire, resulting in insufficient wire feeding force, the wire lead-out speed failing to keep up with the welding speed, low wire feeding accuracy, poor welding positioning accuracy, and reduced welding efficiency. Furthermore, existing welding equipment is inconvenient for fixing curved workpieces, which are prone to displacement, affecting welding performance.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser brazing device and method, comprising a worktable, wherein the worktable is provided with an XYZ axis transfer platform, a welding machine box is fixedly provided on one side of the XYZ axis transfer platform, a welding head is fixedly provided at the bottom of the welding machine box, a wire pulling mechanism is provided on one side of the welding machine box, and a fixing mechanism is provided at the top of the worktable;

[0006] The wire-drawing mechanism includes a wire-feeding reel disposed inside a welding machine housing. A welding wire is disposed on one side of the wire-feeding reel. A sleeve is fixedly disposed at the bottom of the welding machine housing. A wire-drawing housing is fixedly disposed on one side of the sleeve. The welding wire passes through the sleeve and the wire-drawing housing. A wire-drawing assembly is disposed inside the wire-drawing housing. The wire-drawing assembly includes two drive shafts connected to the sidewall of the wire-drawing housing via bearings. Synchronous pulleys are fixedly fitted onto the exterior of each drive shaft. Synchronous belts are fitted onto the exterior of each synchronous pulley. A second motor is fixedly disposed on one side of the wire-drawing housing. The output end of the second motor is fixedly connected to one of the drive shafts. Two limiting slides are fixedly disposed inside the wire-drawing housing. The track includes multiple wire-pulling units on one side of the synchronous belt. Each wire-pulling unit includes a fixed rod, which is fixedly connected to the synchronous belt. A side slider is fixedly connected to one side of the fixed rod, and a connecting block is provided on one side of the side slider. A side groove is formed on the side wall of the connecting block, and the side slider passes through the side groove and is slidably connected to it. A sliding rod is fixedly provided inside the side groove, and it passes through the side slider and is slidably connected to it. A first spring is sleeved on the outside of the sliding rod. A pressure plate is fixedly provided on one side of the connecting block, and it contacts a pressure roller. Two circular plates are fixedly provided on the other side of the connecting block, and a support wheel is connected between the two circular plates through a bearing. The support wheel contacts a limiting slide rail.

[0007] Preferably, the fixing mechanism includes a bottom slider located at the bottom of the workbench. Fixing components are provided on both sides of the bottom slider. Each fixing component includes two square sleeves fixedly connected to the bottom slider. A square rod is provided on one side of each of the two square sleeves, extending into the interior of the two square sleeves. A fixing plate is fixedly connected between the two square rods. A first electric push rod is fixedly provided on one side of the bottom slider, with its output end fixedly connected to the fixing plate. A side plate is fixedly provided on one side of each of the two square rods. A cylinder is fixedly provided on one side of the side plate, with a movable block fixedly connected to its output end. Two connecting plates are provided on one side of the side plate, one of which is fixedly connected to the movable block, and the other to the side plate. Two telescopic rods are fixedly provided on one side of the connecting plate. A second spring is fixedly sleeved on the outside of each of the two telescopic rods. A connecting frame is fixedly connected to one end of each of the two telescopic rods, and a pressure roller is connected to one side of the connecting frame via a bearing.

[0008] Preferably, the workpiece body is provided on the top of the worktable, and the workpiece body is in contact with the pressure roller.

[0009] Preferably, a second electric push rod is fixedly provided on one side of the welding machine housing, and a grinding head is fixedly provided on one side of the second electric push rod.

[0010] Preferably, a tracking lens is fixedly provided on one side of the wire-drawing housing.

[0011] Preferably, the wire-drawing housing has a first pulley connected to it by a bearing, the first pulley being in contact with the welding wire, and two second pulleys connected to it by a bearing, the two second pulleys being in contact with the welding wire.

[0012] Preferably, the bottom of the worktable is provided with a bottom slide groove, and a lead screw is connected to the bottom slide groove through a bearing. A first motor is fixedly provided on one side of the worktable, and the output end of the first motor is fixedly connected to the lead screw. The lead screw passes through the bottom slider and is connected to the bottom slider through a thread. The bottom slider is slidably connected to the bottom slide groove.

[0013] Preferably, the workbench is fixedly connected to four support legs at its bottom corners.

[0014] A laser brazing equipment method, the specific steps of which are as follows:

[0015] S1. Place the workpiece body on the worktable, start the first motor, the first motor drives the lead screw to rotate, the lead screw drives the bottom slider to move, the bottom slider drives the fixed component to move, start the first electric push rod, the first electric push rod drives the fixed plate to move, the fixed plate drives the square rod to retract into the square sleeve, the square rod drives the side plate to move, the side plate drives the connecting plate to move, then start the cylinder, the cylinder drives the movable block to move down, the movable block drives the connecting plate to move down, the connecting plate drives the telescopic rod and the second spring to move, the pressure roller contacts the workpiece body, the upper and lower pressure rollers squeeze the workpiece body to fix the workpiece body, and the weld positions of the two workpiece bodies are aligned;

[0016] S2. Start the second motor. The second motor drives the transmission shaft to rotate, the transmission shaft drives the synchronous pulley to rotate, the synchronous pulley drives the synchronous belt to rotate, and the synchronous belt drives the wire-drawing unit to move. The support wheel of the wire-drawing unit contacts the limit slide rail, causing the support wheel to drive the circular plate to move. The circular plate drives the connecting block to move, and the connecting block drives the pressure plate to move. At the same time, the two pressure plates squeeze the welding wire, and the synchronous belt drives the wire-drawing unit assembly to move. The pressure plate of the wire-drawing unit pulls the welding wire to move, leading the welding wire out of the end of the wire-drawing housing, improving the wire feeding accuracy and facilitating welding of the welding head.

[0017] S3. The welding machine box is moved by the XYZ axis transfer platform, and the weld is tracked by the tracking lens to perform welding. The welding trajectory is clear, and the post-weld position is ground by the grinding head according to the welding trajectory.

[0018] The embodiments of the present invention have the following advantages:

[0019] 1. The support wheel of the wire drawing unit contacts the limiting slide rail, causing the support wheel to drive the circular plate to move. The circular plate drives the connecting block to move, and the connecting block drives the pressure plate to move. As the two pressure plates squeeze the pressure wheel, the synchronous belt drives the wire drawing unit assembly to move. The pressure plate of the wire drawing unit pulls the pressure wheel to move, leading the pressure wheel out of the end of the wire drawing housing, improving the wire feeding accuracy, facilitating welding head welding, increasing the traction force, making the wire drawing speed equal to the welding speed, improving welding positioning accuracy, and increasing welding efficiency.

[0020] 2. The cylinder drives the movable block to move down, which in turn drives the connecting plate to move down. The connecting plate then drives the telescopic rod and the second spring to move. The pressure roller contacts the workpiece body, and the upper and lower pressure rollers squeeze the workpiece body to fix it. The weld seams of the two workpiece bodies are aligned, which facilitates the fixing of the arc-shaped workpiece and prevents the arc-shaped workpiece from easily shifting, thus facilitating welding. Attached Figure Description

[0021] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0022] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0023] Figure 1 This is a front view of the overall structure provided by the present invention;

[0024] Figure 2 Rear view of the overall structure provided for this invention;

[0025] Figure 3 A bottom view of the overall structure provided for this invention;

[0026] Figure 4 A perspective view of the fixing mechanism provided by the present invention;

[0027] Figure 5 A perspective view of the welding chassis provided for this invention;

[0028] Figure 6 This is a cross-sectional view of the wire-drawing housing provided by the present invention;

[0029] Figure 7 A perspective view of the wire-drawing mechanism provided by the present invention;

[0030] Figure 8 A perspective view of the wire-drawing assembly provided by the present invention;

[0031] Figure 9 Provided by the present invention Figure 4 Enlarged view of the structure of section A in the middle;

[0032] Figure 10 Provided by the present invention Figure 6 Enlarged view of the structure of section B in the middle;

[0033] Figure 11 Provided by the present invention Figure 7 Enlarged view of the structure of section C.

[0034] In the diagram: 1. Worktable; 2. First motor; 3. Support leg; 4. Workpiece body; 5. XYZ axis transfer platform; 6. Side plate; 7. Welding housing; 8. Bottom slide; 9. Lead screw; 10. Bottom slider; 11. First electric push rod; 12. Square sleeve; 13. Square rod; 14. Fixing plate; 15. Cylinder; 16. Moving block; 17. Connecting plate; 18. Grinding head; 19. Second electric push rod; 20. Sleeve; 21. Tracking lens; 22. Second motor; 23. Wire drawing housing; 24. Welding wire; 25. Welding head; 26. Wire feeding reel; 27. Pressure roller; 28. Synchronous pulley; 29. ​​Synchronous belt; 30. Slide bar; 31. First pulley; 32. Second pulley; 33. Drive shaft; 34. Fixed rod; 35. Connecting block; 36. Pressure plate; 37. Side groove; 38. Side slider; 39. First spring; 40. Circular plate; 41. Support wheel; 42. Telescopic rod; 43. Second spring; 44. Connecting frame; 45. Limiting slide rail. Detailed Implementation

[0035] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0036] See attached document Figure 1 -Appendix Figure 11The present invention provides a laser brazing equipment and method, including a worktable 1, an XYZ axis transfer platform 5, a welding machine box 7 fixedly mounted on one side of the XYZ axis transfer platform 5, a welding head 25 fixedly mounted on the bottom of the welding machine box 7, a wire pulling mechanism mounted on one side of the welding machine box 7, and a fixing mechanism mounted on the top of the worktable 1.

[0037] The wire-drawing mechanism includes a wire-feeding reel 26, which is located inside the welding machine housing 7. A welding wire 24 is provided on one side of the wire-feeding reel 26. A sleeve 20 is fixedly installed at the bottom of the welding machine housing 7. A wire-drawing housing 23 is fixedly installed on one side of the sleeve 20. The welding wire 24 passes through the sleeve 20 and the wire-drawing housing 23. A wire-drawing assembly is provided inside the wire-drawing housing 23. The wire-drawing assembly includes two drive shafts 33, which are connected to the sidewall of the wire-drawing housing 23 via bearings. Synchronous pulleys 28 are fixedly fitted onto the outside of each of the two drive shafts 33. A synchronous belt 29 is fitted onto the outside of each of the two synchronous pulleys 28. A second motor 22 is fixedly installed on one side of the wire-drawing housing 23. The output end of the second motor 22 is fixedly connected to one of the drive shafts 33. Two limiting slide rails 45 are fixedly installed inside the wire-drawing housing 23. Multiple wire-drawing units are provided on one side of the timing belt 29. Each wire-drawing unit includes a fixed rod 34, which is fixedly connected to the timing belt 29. A side slider 38 is fixedly connected to one side of the fixed rod 34. A connecting block 35 is provided on one side of the side slider 38. A side groove 37 is opened on the side wall of the connecting block 35. The side slider 38 passes through the side groove 37 and is slidably connected to the side groove 37. A sliding rod 30 is fixedly provided inside the side groove 37. The sliding rod 30 passes through the side slider 38 and is slidably connected to the side slider 38. A first spring 39 is sleeved on the outside of the sliding rod 30. A pressure plate 36 is fixedly provided on one side of the connecting block 35. The pressure plate 36 is in contact with the pressure roller 27. Two circular plates 40 are fixedly provided on the other side of the connecting block 35. A support wheel 41 is connected between the two circular plates 40 through a bearing. The support wheel 41 is in contact with the limiting slide rail 45.

[0038] In this embodiment, the second motor 22 is started, which drives the transmission shaft 33 to rotate. The transmission shaft 33 drives the synchronous pulley 28 to rotate, the synchronous pulley 28 drives the synchronous belt 29 to rotate, and the synchronous belt 29 drives the wire drawing unit to move. The support wheel 41 of the wire drawing unit contacts the limiting slide rail 45, causing the support wheel 41 to drive the circular plate 40 to move. The circular plate 40 drives the connecting block 35 to move, and the connecting block 35 drives the pressure plate 36 to move. At the same time, the two pressure plates 36 squeeze the pressure wheel 27, and the synchronous belt 29 drives the wire drawing unit assembly to move. The pressure plate 36 of the wire drawing unit pulls the pressure wheel 27 to move, leading the pressure wheel 27 out of the end of the wire drawing housing 23, thereby improving the wire feeding accuracy.

[0039] To achieve the purpose of fixation, this device adopts the following technical solution: The fixing mechanism includes a bottom slider 10, which is located at the bottom of the workbench 1. Fixing components are provided on both sides of the bottom slider 10. Each fixing component includes two square sleeves 12, which are fixedly connected to the bottom slider 10. A square rod 13 is provided on one side of each of the two square sleeves 12, extending into the interior of the two square sleeves 12. A fixing plate 14 is fixedly connected between the two square rods 13. A first electric push rod 11 is fixedly provided on one side of the bottom slider 10, with its output end fixedly connected to the fixing plate 14. A side plate 6 is fixedly provided on one side of each of the two square rods 13. A cylinder 15 is fixedly provided on one side of the side plate 6, with a movable block 16 fixedly connected to its output end. Two connecting plates 17 are provided on one side of the side plate 6, one of which is fixedly connected to the movable block 16, and the other... The connecting plate 17 is fixedly connected to the side plate 6. Two telescopic rods 42 are fixedly provided on one side of the connecting plate 17. A second spring 43 is fixedly sleeved on the outside of the two telescopic rods 42. A connecting frame 44 is fixedly connected to one end of each of the two telescopic rods 42. A pressure roller 27 is connected to one side of the connecting frame 44 through a bearing. The workpiece body 4 is provided on the top of the workbench 1. The workpiece body 4 is in contact with the pressure roller 27. The first electric push rod 11 is activated. The first electric push rod 11 drives the fixed plate 14 to move. The fixed plate 14 drives the square rod 13 to retract into the square sleeve 12. The square rod 13 drives the side plate 6 to move. The side plate 6 drives the connecting plate 17 to move. Then the cylinder 15 is activated. The cylinder 15 drives the movable block 16 to move down. The movable block 16 drives the connecting plate 17 to move down. The connecting plate 17 drives the telescopic rods 42 and the second spring 43 to move. The pressure roller 27 is in contact with the workpiece body 4. The upper and lower pressure rollers 27 squeeze the workpiece body 4, so that the workpiece body 4 is fixed and the weld positions of the two workpiece bodies 4 are aligned.

[0040] To achieve the purpose of grinding, the device adopts the following technical solution: a second electric push rod 19 is fixedly provided on one side of the welding machine box 7, and a grinding head 18 is fixedly provided on one side of the second electric push rod 19. The grinding head 18 is rotated by a motor, and the grinding head 18 grinds the post-weld position according to the welding trajectory.

[0041] To achieve weld seam tracking, this device employs the following technical solution: a tracking lens 21 is fixedly mounted on one side of the wire-drawing housing 23. The tracking lens 21 tracks the weld seam, and the main function of the CCD camera in the weld seam tracking sensor is to read images. When the CCD camera captures a scene, the light reflected from the scene is transmitted through the CCD camera lens onto the CCD. When the CCD is exposed, the photodiode is excited by the light and releases a charge, thereby generating an electrical signal from the photosensitive element.

[0042] The CCD control chip uses the control signal circuit in the photosensitive element to control the current generated by the photodiode. The current is output by the current transmission circuit. The tracking lens 21 is composed of a CCD camera, which collects the electrical signals generated by the single image and outputs them to the amplifier. After amplification and filtering, the electrical signals are sent to the A / D converter, which converts the electrical signals into digital signals. The magnitude of the value is proportional to the strength of the electrical signal, i.e., the voltage level. These values ​​are actually the image data. After the image is stored, image processing is performed to obtain the deviation between the weld seam and the welding gun. Then, the host computer sends a control signal to the PLC to achieve precise weld seam tracking.

[0043] To achieve the purpose of preventing deviation, the device adopts the following technical solution: the wire pulling housing 23 is connected to a first pulley 31 through a bearing, the first pulley 31 is in contact with the welding wire 24, and the wire pulling housing 23 is connected to two second pulleys 32 through a bearing, the two second pulleys 32 are in contact with the welding wire 24, and the welding wire 24 is corrected by the first pulley 31 and the second pulleys 32;

[0044] To achieve the purpose of movement, the device adopts the following technical solution: The bottom of the worktable 1 is provided with a bottom slide groove 8, and a lead screw 9 is connected inside the bottom slide groove 8 through a bearing. A first motor 2 is fixedly provided on one side of the worktable 1. The output end of the first motor 2 is fixedly connected to the lead screw 9. The lead screw 9 passes through the bottom slider 10 and is connected to the bottom slider 10 through a thread. The bottom slider 10 is slidably connected to the bottom slide groove 8. When the workpiece body 4 is placed on the worktable 1, the first motor 2 is started. The first motor 2 drives the lead screw 9 to rotate, the lead screw 9 drives the bottom slider 10 to move, and the bottom slider 10 drives the fixed component to move.

[0045] In order to achieve the purpose of support, the device adopts the following technical solution: support legs 3 are fixedly connected to the four corners of the bottom of the workbench 1, and the support legs 3 have the function of supporting the workbench 1.

[0046] A laser brazing equipment method, the specific steps of which are as follows:

[0047] S1. Place the workpiece body 4 on the workbench 1, start the first motor 2, the first motor 2 drives the lead screw 9 to rotate, the lead screw 9 drives the bottom slider 10 to move, the bottom slider 10 drives the fixed component to move, start the first electric push rod 11, the first electric push rod 11 drives the fixed plate 14 to move, the fixed plate 14 drives the square rod 13 to retract into the square sleeve 12, the square rod 13 drives the side plate 6 to move, the side plate 6 drives the connecting plate 17 to move, then start the cylinder 15, the cylinder 15 drives the movable block 16 to move down, the movable block 16 drives the connecting plate 17 to move down, the connecting plate 17 drives the telescopic rod 42 and the second spring 43 to move, the pressure roller 27 contacts the workpiece body 4, and the upper and lower pressure rollers 27 squeeze the workpiece body 4 to fix the workpiece body 4, and the weld positions of the two workpiece bodies 4 are aligned.

[0048] S2. Start the second motor 22. The second motor 22 drives the transmission shaft 33 to rotate. The transmission shaft 33 drives the synchronous pulley 28 to rotate. The synchronous pulley 28 drives the synchronous belt 29 to rotate. The synchronous belt 29 drives the wire-drawing unit to move. The support wheel 41 of the wire-drawing unit contacts the limit slide rail 45, so that the support wheel 41 drives the circular plate 40 to move. The circular plate 40 drives the connecting block 35 to move. The connecting block 35 drives the pressure plate 36 to move. At the same time, the two pressure plates 36 squeeze the welding wire 24. The synchronous belt 29 drives the wire-drawing unit assembly to move. The pressure plate 36 of the wire-drawing unit pulls the welding wire 24 to move, and leads the welding wire 24 out of the end of the wire-drawing housing 23, improving the wire feeding accuracy and facilitating welding head 25 to weld.

[0049] S3. The welding machine box 7 is moved by the XYZ axis transfer platform, and the weld is tracked by the tracking lens 21 to weld the weld. The welding trajectory is clear, and the post-weld position is ground by the grinding head 18 according to the welding trajectory.

[0050] The above description is merely a preferred embodiment of the present invention. Any person skilled in the art can modify the present invention or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A laser brazing apparatus, comprising a worktable (1), characterized in that: The workbench (1) is provided with an XYZ axis transfer platform (5), a welding machine box (7) is fixedly provided on one side of the XYZ axis transfer platform (5), a welding head (25) is fixedly provided at the bottom of the welding machine box (7), a wire pulling mechanism is provided on one side of the welding machine box (7), and a fixing mechanism is provided at the top of the workbench (1). The wire-drawing mechanism includes a wire-feeding reel (26), which is located inside the welding machine housing (7). A welding wire (24) is provided on one side of the wire-feeding reel (26). A sleeve (20) is fixedly provided at the bottom of the welding machine housing (7). A wire-drawing housing (23) is fixedly provided on one side of the sleeve (20). The welding wire (24) passes through the sleeve (20) and the wire-drawing housing (23). A wire-drawing assembly is provided inside the wire-drawing housing (23). The wire-drawing assembly includes two drive shafts (33). The drive shaft (33) is connected to the side wall of the wire drawing housing (23) by bearings. Synchronous pulleys (28) are fixedly fitted on the outside of both drive shafts (33), and synchronous belts (29) are fitted on the outside of the two synchronous pulleys (28). A second motor (22) is fixedly installed on one side of the wire drawing housing (23). The output end of the second motor (22) is fixedly connected to one of the drive shafts (33). Two limiting slide rails (45) are fixedly installed inside the wire drawing housing (23). The synchronous belt (29)... 9) Multiple wire-drawing units are provided on one side. Each wire-drawing unit includes a fixed rod (34). The fixed rod (34) is fixedly connected to the synchronous belt (29). A side slider (38) is fixedly connected to one side of the fixed rod (34). A connecting block (35) is provided on one side of the side slider (38). A side groove (37) is opened on the side wall of the connecting block (35). The side slider (38) passes through the side groove (37) and is slidably connected to the side groove (37). A sliding rod (30) is fixedly provided inside the side groove (37). The slide rod (30) passes through the side slider (38) and is slidably connected to the side slider (38). A first spring (39) is sleeved on the outside of the slide rod (30). A pressure plate (36) is fixed on one side of the connecting block (35). The pressure plate (36) is in contact with the pressure roller (27). Two circular plates (40) are fixed on the other side of the connecting block (35). A support wheel (41) is connected between the two circular plates (40) through a bearing. The support wheel (41) is in contact with the limiting slide rail (45).

2. The laser brazing equipment according to claim 1, characterized in that: The fixing mechanism includes a bottom slider (10), which is located at the bottom of the workbench (1). Fixing components are provided on both sides of the bottom slider (10). Each fixing component includes two square sleeves (12), which are fixedly connected to the bottom slider (10). A square rod (13) is provided on one side of each of the two square sleeves (12), extending into the interior of the two square sleeves (12). A fixing plate (14) is fixedly connected between the two square rods (13). A first electric push rod (11) is fixedly provided on one side of the bottom slider (10), with its output end fixedly connected to the fixing plate (14). The two square rods... (13) A side plate (6) is fixedly provided on one side, and a cylinder (15) is fixedly provided on one side of the side plate (6). A movable block (16) is fixedly connected to the output end of the cylinder (15). Two connecting plates (17) are provided on one side of the side plate (6). One of the connecting plates (17) is fixedly connected to the movable block (16), and the other connecting plate (17) is fixedly connected to the side plate (6). Two telescopic rods (42) are fixedly provided on one side of the connecting plate (17). A second spring (43) is fixedly sleeved on the outside of the two telescopic rods (42). A connecting frame (44) is fixedly connected to one end of each of the two telescopic rods (42). A pressure wheel (27) is connected to one side of the connecting frame (44) through a bearing.

3. The laser brazing equipment according to claim 1, characterized in that: The workbench (1) is provided with a workpiece body (4) on top, and the workpiece body (4) is in contact with the pressure roller (27).

4. The laser brazing equipment according to claim 1, characterized in that: A second electric push rod (19) is fixedly provided on one side of the welding machine box (7), and a grinding head (18) is fixedly provided on one side of the second electric push rod (19).

5. The laser brazing equipment according to claim 1, characterized in that: A tracking lens (21) is fixedly provided on one side of the wire-drawing housing (23).

6. The laser brazing equipment according to claim 1, characterized in that: The wire-drawing housing (23) is connected to a first pulley (31) via a bearing. The first pulley (31) is in contact with the welding wire (24). The wire-drawing housing (23) is also connected to two second pulleys (32) via a bearing. The two second pulleys (32) are in contact with the welding wire (24).

7. The laser brazing equipment according to claim 1, characterized in that: The workbench (1) has a bottom slide groove (8) at the bottom. A lead screw (9) is connected inside the bottom slide groove (8) through a bearing. A first motor (2) is fixedly installed on one side of the workbench (1). The output end of the first motor (2) is fixedly connected to the lead screw (9). The lead screw (9) passes through the bottom slider (10) and is connected to the bottom slider (10) by a thread. The bottom slider (10) is slidably connected to the bottom slide groove (8).

8. The laser brazing equipment according to claim 1, characterized in that: The workbench (1) is fixedly connected to four support legs (3) at the bottom corners.

9. A laser brazing equipment method, characterized in that: The specific steps are as follows: S1. Place the workpiece body (4) on the worktable (1), start the first motor (2), the first motor (2) drives the lead screw (9) to rotate, the lead screw (9) drives the bottom slider (10) to move, the bottom slider (10) drives the fixed component to move, start the first electric push rod (11), the first electric push rod (11) drives the fixed plate (14) to move, the fixed plate (14) drives the square rod (13) to retract into the square sleeve (12), the square rod (13) drives the side plate (6) to move. The side plate (6) drives the connecting plate (17) to move, and then the cylinder (15) is activated. The cylinder (15) drives the movable block (16) to move down, the movable block (16) drives the connecting plate (17) to move down, the connecting plate (17) drives the telescopic rod (42) and the second spring (43) to move, the pressure roller (27) contacts the workpiece body (4), and the upper and lower pressure rollers (27) squeeze the workpiece body (4) to fix the workpiece body (4), and the weld positions of the two workpiece bodies (4) are aligned. S2. Start the second motor (22). The second motor (22) drives the transmission shaft (33) to rotate. The transmission shaft (33) drives the synchronous pulley (28) to rotate. The synchronous pulley (28) drives the synchronous belt (29) to rotate. The synchronous belt (29) drives the wire-drawing unit to move. The support wheel (41) of the wire-drawing unit contacts the limit slide rail (45), so that the support wheel (41) drives the circular plate (40) to move. The circular plate (40) drives the connecting block (35) to move. The connecting block (35) drives the pressure plate (36) to move. So that the two pressure plates (36) squeeze the welding wire (24) at the same time, the synchronous belt (29) drives the wire-drawing unit assembly to move. The pressure plate (36) of the wire-drawing unit pulls the welding wire (24) to move, and leads the welding wire (24) out of the end of the wire-drawing housing (23), improving the wire feeding accuracy and facilitating welding head (25) to weld. S3. The welding machine box (7) is moved by the XYZ axis transfer platform. The weld is tracked by the tracking lens (21) and then welded. The welding trajectory is clear. The position after welding is ground by the grinding head (18) according to the welding trajectory.

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