A laser welding system for instrument manufacturing

Abstract

The application relates to the technical field of laser welding systems, and discloses a laser welding system for instrument and meter production and manufacturing, which can form continuous welding operation in cooperation with the shell of the instrument and meter to be welded, and can form double-side welding operation of two laser welding joints relative to the welding gap in cooperation with the welding gap during the welding process, so that the welding quality is higher; meanwhile, the two laser welding joints can also form same-side welding operation, so that the welding efficiency is improved. The laser welding system comprises two laser welding joints, a device main body, a rack bed body and a gantry. The gantry is installed on the rack bed body, a driving structure is installed between the gantry and the rack bed body, the driving structure is used for driving movement of the gantry relative to the rack bed body, a sliding structure is installed on the gantry, a space displacement frame is installed on the sliding structure, the position of the space displacement frame relative to the gantry can be adjusted through the sliding structure, and an integrated mounting rack is fixedly connected to the space displacement frame.

Description

Technical Field

[0001] This invention relates to the field of laser welding system technology, and more specifically to a laser welding system for the production and manufacturing of instruments and meters. Background Technology

[0002] As is well known, instruments and meters are professional equipment used to measure, monitor, control and analyze physical or chemical quantities. Typically, instruments and meters are equipped with a carrier-type housing. To ensure the installation and protection of the instruments and meters, the housing structure usually needs to have strong sealing performance, which requires a large amount of welding and high welding quality. To facilitate the welding operation of the housing during the manufacturing process of instruments and meters, we propose a laser welding system for the manufacturing of instruments and meters.

[0003] A search revealed Chinese patent application number CN202510649119.X, which discloses a laser welding equipment for instrument manufacturing. The equipment comprises a base plate, a support frame fixedly connected to the bottom of the base plate, a welding support frame fixedly connected to the top of the base plate, a fixed end of an electric lifting platform fixedly connected to the top of the welding support frame, a laser welding head fixedly connected to the movable end of the electric lifting platform, a protective device fixedly connected to the top of the welding support frame, and a pneumatic device fixedly connected to the bottom of the welding support frame. The bottom of the pneumatic device is fixedly connected to the top of the base plate. The protective device is positioned below the laser welding head. During use, the welding support frame supports the electric lifting platform and the laser welding head, and the laser welding head welds the components. Patent application number CN202411746326.9 discloses a welding machine for instrument manufacturing. It is roughly described as follows: a welding base on which a multi-degree-of-freedom laser welding robot is mounted; a manufacturing station plate is provided on one side of the welding base; a supporting half-shaft is fixedly mounted on the manufacturing station plate; a positioning adjustment component for positioning and clamping a spring tube is provided on the supporting half-shaft; a transverse pushing column for conveying the spring tube is fixedly connected to the end of the supporting half-shaft; an electrically controlled pushing component is provided inside the transverse pushing column for pushing the spring tube forward. In use, the spring tube is conveyed through the transverse pushing column, the spring tube is clamped and limited by the inclined clamping plate, and the rotation angle of the spring tube is limited by the blocking end block and its injection connector.

[0004] While the aforementioned existing technical solutions can provide laser welding for the production and manufacturing of instruments and meters, the welding process is only single-sided welding. If welding is required on both sides of the weld seam, one side must be welded first before the other side, which reduces welding efficiency. Furthermore, the specific structural form of the shell inevitably involves the distinction between internal and external corners. In actual welding, the welding difficulty of internal corners is significantly lower than that of external corners in most cases. The two aforementioned technical solutions are clearly more convenient for welding internal corners. When welding external corners, both practicality and ease of operation need further improvement. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a laser welding system for instrument manufacturing. This system can perform continuous welding operations on the housing of the instrument to be welded. During the welding process, it can also perform double-sided welding operations with two laser welding heads relative to the welding gap, resulting in higher welding quality. Furthermore, the two laser welding heads can also perform welding operations on the same side, thereby improving welding efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a laser welding system for instrument manufacturing, comprising two laser welding heads and a main body, the main body comprising a machine bed and a gantry frame, the gantry frame being mounted on the machine bed, a drive structure being installed between the gantry frame and the machine bed, the drive structure being used for moving the gantry frame relative to the machine bed, a sliding adjustment structure being mounted on the gantry frame, a spatial displacement frame being mounted on the sliding adjustment structure, the position of the spatial displacement frame relative to the gantry frame being adjustable through the sliding adjustment structure, an integrated mounting frame being fixedly connected to the spatial displacement frame, an electric adjusting structure being mounted on the integrated mounting frame, both laser welding heads being mounted on the electric adjusting structure, the operation of the electric adjusting structure enabling relative attitude adjustment of the two laser welding heads, a synchronous adjustment structure being mounted on the integrated mounting frame, the synchronous adjustment structure being used for auxiliary adjustment of the two laser welding heads, and a rotary work clamping table being mounted on the machine bed.

[0007] Preferably, the electric adjustment structure includes a first servo motor, two adjustment mounting brackets, and two sliding plate brackets. Both sliding plate brackets are slidably connected to the integrated mounting bracket, and the two adjustment mounting brackets are rotatably connected to the two sliding plate brackets respectively. An assembly bracket is fixedly connected to the bottom end of each of the two adjustment mounting brackets. A connecting bracket is installed outside each of the two laser welding heads, and the two connecting brackets are rotatably connected within the two assembly brackets respectively. An angle adjustment component is installed on each of the two adjustment mounting brackets, and the two angle adjustment components are used for adjusting the angle of the two laser welding heads respectively. The first servo motor is installed at the bottom end of the integrated mounting bracket, and a synchronous gear is installed on the output shaft of the first servo motor. The synchronous gear meshes with and drives two spur racks, and the two spur racks are fixedly connected to the two sliding plate brackets respectively.

[0008] Preferably, both of the angle adjustment components include an electric telescopic rod, which is respectively mounted on the two adjustment mounting frames. Each of the two electric telescopic rods is connected to a follower slide rod, which is slidably engaged within the two adjustment mounting frames. Each follower slide rod is rotatably connected to a linkage rod, which is rotatably connected to the two rotating frames.

[0009] Preferably, the synchronous adjustment structure includes an electric lifting rod and two vertical guide rods. The electric lifting rod is mounted on the integrated mounting frame. A synchronous frame is mounted on the lifting rod of the electric lifting rod. Two transmission cylinders are fixedly connected to the synchronous frame. The two vertical guide rods are respectively fixedly connected to the two sliding plate frames. A transmission rod frame is slidably connected to each of the two vertical guide rods. An arc-shaped frame is hinged to each of the two transmission rod frames. The two arc-shaped frames are rotatably connected to the two adjustment mounting frames. The two transmission cylinders are slidably connected to the two transmission rod frames.

[0010] Preferably, the rotary work clamping table includes a main rotating frame, which is rotatably connected to the machine bed. A second servo motor is installed inside the machine bed, and the output shaft of the second servo motor is drivenly connected to the main rotating frame. Two assembly frames are installed on the main rotating frame, and each of the two assembly frames is rotatably connected to a cantilever frame. Each of the two cantilever frames is equipped with a rotating clamping plate, and each of the two rotating clamping plates is provided with multiple T-shaped clamping slots. Each of the bottom ends of the two cantilever frames is provided with a mounting slot, and each of the two mounting slots is equipped with a third servo motor. The two third servo motors are drivenly connected to the two rotating clamping plates respectively. A fourth servo motor is installed on each of the two assembly frames, and the two fourth servo motors are used to drive the rotation of the two cantilever frames respectively.

[0011] Preferably, the sliding adjustment structure includes a horizontal lead screw sliding component and a vertical lead screw sliding component. The horizontal lead screw sliding component is mounted on the gantry frame, and an intermediate transfer plate is mounted on the horizontal lead screw sliding component. The vertical lead screw sliding component is mounted on the intermediate transfer plate, and the spatial displacement frame is mounted on the vertical lead screw sliding component.

[0012] Preferably, two dovetail rails are fixedly connected to the machine frame bed, and dovetail sleeves are slidably connected to both dovetail rails. Both dovetail sleeves are installed at the bottom of the gantry frame.

[0013] Preferably, the drive structure includes an external mounting plate and an external rack. The external mounting plate is fixedly connected to the gantry frame. A fifth servo motor is mounted on the external mounting plate, and a transmission gear that meshes with the external rack is mounted on the output shaft of the fifth servo motor.

[0014] Preferably, each of the two adjustment mounting brackets is fixedly connected with a hinge seat and a hinge plate, the two sliding plate brackets are rotatably connected to the two hinge seats respectively, and the two hinge plates are rotatably connected to the two arc-shaped brackets respectively.

[0015] Preferably, the frame bed is provided with a slag discharge port, and support legs are provided at the four corners of the bottom of the frame bed. The frame bed is suspended at the bottom by the four support legs. A collection box is provided at the bottom of the frame bed for receiving slag falling from the slag discharge port.

[0016] Compared with the prior art, the present invention provides a laser welding system for the production and manufacturing of instruments and meters, which has the following beneficial effects:

[0017] (1). In this invention, the main structure of the laser welding system for instrument manufacturing is formed by designing the main body of the equipment, which facilitates the subsequent integration and installation of the electric adjustment structure and the rotary work clamping table.

[0018] (2). In this invention, the electric adjustment structure provides a specific installation position for the two laser welding heads, and facilitates the adjustment of the relative position of the two laser welding heads, as well as the adjustment of the relative posture of the two laser welding heads.

[0019] (3). In this invention, the design of the synchronous adjustment structure can provide further adjustment for the relative posture of the two laser welding heads, so as to broaden the adjustment range of the relative posture between the two laser welding heads.

[0020] (4). In this invention, by equipping the rotary work clamping table, a basic clamping position can be provided for the housing of the instrument to be welded, so that the housing of the instrument is in a relatively fixed state for welding, and the relative position and posture of the housing to be welded relative to the laser welding head can be further enriched, making it more practical. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0022] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0023] Figure 3 For the present invention Figure 1 A magnified view of the structure at point B in the middle;

[0024] Figure 4 This is a three-dimensional structural diagram of the integrated mounting bracket, the first servo motor, and the adjustment mounting bracket of the present invention.

[0025] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point C in the middle;

[0026] Figure 6 This is a three-dimensional structural diagram of the cooperation between the rotating frame, the follower slide rod, and the linkage rod of the present invention;

[0027] Figure 7 This is a three-dimensional structural diagram of the spatial displacement frame, integrated mounting frame, and synchronous gear of the present invention.

[0028] Figure 8 This is a three-dimensional structural diagram of the entire invention from a rear side view;

[0029] Figure 9 For the present invention Figure 8 A magnified schematic diagram of the local structure at point D;

[0030] Figure 10 This is a three-dimensional structural diagram of the synchronization frame and transmission cylinder of the present invention.

[0031] Figure 11 This is a three-dimensional structural diagram of the invention viewed from below.

[0032] Figure 12 For the present invention Figure 11 A magnified schematic diagram of the local structure at point E;

[0033] Figure 13 This is a three-dimensional structural diagram of the sliding plate frame, synchronous gear, and spur rack of the present invention.

[0034] Figure 14 This is a partial cross-sectional three-dimensional structural diagram of the main rotating frame, assembly frame, and cantilever frame of the present invention.

[0035] Figure 15 This is a schematic diagram of the clamping and welding of the shell to be welded by using a universal pressure frame with a T-shaped clamping groove 27 according to the present invention;

[0036] Figure 16 For the present invention Figure 15 A magnified schematic diagram of the local structure at point F;

[0037] Figure 17 This is a three-dimensional structural diagram of the present invention, showing the "V" shaped arrangement between the two adjustable mounting brackets.

[0038] Figure 18 This is a three-dimensional structural diagram of the two adjustable mounting brackets of the present invention, which present an "eight" shape.

[0039] In the diagram: 1. Laser welding head; 2. Machine bed; 3. Gantry frame; 4. Spatial displacement frame; 5. Integrated mounting frame; 6. First servo motor; 7. Adjustment mounting frame; 8. Sliding plate frame; 9. Assembly frame; 10. Rotary connecting frame; 11. Synchronous gear; 12. Spur rack; 13. Electric telescopic rod; 14. Follower slide rod; 15. Linkage rod; 16. Electric lifting rod; 17. Vertical guide rod; 18. Synchronous frame; 19. Transmission cylinder; 20. Transmission rod frame; 21. Arc frame; 22. Main rotating frame; 23. Second servo motor 24. Assembly frame; 25. Cantilever frame; 26. Rotating clamping plate; 27. T-shaped clamping groove; 28. Mounting groove; 29. ​​Third servo motor; 30. Fourth servo motor; 31. Horizontal lead screw sliding component; 32. Vertical lead screw sliding component; 33. Intermediate transfer plate; 34. Dovetail track bar; 35. Dovetail sleeve frame; 36. External mounting plate; 37. External rack; 38. Fifth servo motor; 39. Transmission gear; 40. Hinge seat; 41. Hinge plate; 42. Slag discharge port; 43. Support leg; 44. Collection box. Detailed Implementation

[0040] 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.

[0041] For examples, please refer to Figures 1-18A laser welding system for instrument manufacturing includes two laser welding heads 1 and a main body. The main body includes a machine bed 2 and a gantry 3. The gantry 3 is mounted on the machine bed 2. Two dovetail rails 34 are fixedly connected to the machine bed 2. Dovetail sleeves 35 are slidably connected to each of the two dovetail rails 34. Both dovetail sleeves 35 are mounted at the bottom of the gantry 3. A drive structure is installed between the gantry 3 and the machine bed 2. The drive structure includes an external mounting plate 36 and an external rack 37. The external mounting plate 36 is fixedly connected to the gantry 3. A fifth servo motor 38 is mounted on the external mounting plate 36. A transmission gear 3 meshing with the external rack 37 is mounted on the output shaft of the fifth servo motor 38. 9. The drive structure is used for the movement of the gantry 3 relative to the machine bed 2. A sliding adjustment structure is installed on the gantry 3, and a spatial displacement frame 4 is mounted on the sliding adjustment structure. The sliding adjustment structure includes a horizontal lead screw sliding component 31 and a vertical lead screw sliding component 32. The horizontal lead screw sliding component 31 is mounted on the gantry 3, and an intermediate transfer plate 33 is mounted on the horizontal lead screw sliding component 31. The vertical lead screw sliding component 32 is mounted on the intermediate transfer plate 33, and the spatial displacement frame 4 is mounted on the vertical lead screw sliding component 32. The sliding adjustment structure allows for position adjustment of the spatial displacement frame 4 relative to the gantry 3. This design of the main body forms the main structure of the laser welding system used for instrument manufacturing, facilitating subsequent electric adjustment mechanisms and rotary work clamping tables. The system integrates and installs an integrated mounting frame 5 fixedly connected to a spatial displacement frame 4. An electrically adjustable structure is mounted on the integrated mounting frame 5. Both laser welding heads 1 are mounted on the electrically adjustable structure. The operation of the electrically adjustable structure enables relative attitude adjustment of the two laser welding heads 1. The electrically adjustable structure includes a first servo motor 6, two adjusting mounting frames 7, and two sliding plate frames 8. Both sliding plate frames 8 are slidably connected to the integrated mounting frame 5. The two adjusting mounting frames 7 are rotatably connected to the two sliding plate frames 8. Assembly frames 9 are fixedly connected to the bottom of each of the two adjusting mounting frames 7. A connecting frame 10 is mounted on the outside of each of the two laser welding heads 1, and the two connecting frames 10 are rotatably connected to the two assembly frames 9. Angle adjustment mechanisms are installed on both adjusting mounting frames 7. The system comprises two angle adjustment components for adjusting the angles of two laser welding heads 1. A first servo motor 6 is mounted at the bottom of an integrated mounting bracket 5. A synchronous gear 11 is mounted on the output shaft of the first servo motor 6. The synchronous gear 11 meshes with two racks 12, which are fixedly connected to two sliding plate frames 8. Each angle adjustment component includes an electric telescopic rod 13, which is mounted on two adjustment mounting brackets 7. Each telescopic rod 13 has a follower slide rod 14 connected to it. The follower slide rods 14 slide within the two adjustment mounting brackets 7. Each follower slide rod 14 is rotatably connected to a linkage rod 15, which is rotatably connected to two rotating connecting frames 10.Each of the two adjustable mounting brackets 7 is fixedly connected to a hinge seat 40 and a hinge plate 41. Two sliding plate brackets 8 are rotatably connected to the two hinge seats 40 respectively. Through the design of the electrically adjustable structure, specific mounting positions are provided for the two laser welding heads 1, facilitating the adjustment of their relative positions and attitudes.

[0042] It should be further explained that a synchronous adjustment structure is installed on the integrated mounting frame 5. The synchronous adjustment structure is used for auxiliary adjustment of the two laser welding heads 1. The synchronous adjustment structure includes an electric lifting rod 16 and two vertical guide rods 17. The electric lifting rod 16 is installed on the integrated mounting frame 5. A synchronous frame 18 is installed on the lifting rod of the electric lifting rod 16. Two transmission cylinders 19 are fixedly connected to the synchronous frame 18. The two vertical guide rods 17 are respectively fixedly connected to two sliding plate frames 8. A transmission rod frame 20 is slidably connected to each of the two vertical guide rods 17. An arc-shaped frame 21 is hinged to each of the two transmission rod frames 20. The two arc-shaped frames 21 are respectively connected to... Two adjusting mounting brackets 7 are rotatably connected, two hinge plates 41 are rotatably connected to two arc-shaped frames 21 respectively, and two transmission cylinders 19 are slidably connected to two transmission rod frames 20 respectively. Through the design of the synchronous adjustment structure, further adjustments can be made to the relative posture of the two laser welding heads 1 to widen the adjustment range of the relative posture between the two laser welding heads 1. A rotary work clamping table is installed on the machine bed 2. The rotary work clamping table includes a main rotating frame 22, which is rotatably connected to the machine bed 2. A second servo motor 23 is installed inside the machine bed 2. The output shaft of the second servo motor 23 is connected to the main rotating frame 22. The rotating frame 22 is connected by a transmission mechanism. Two assembly frames 24 are mounted on the main rotating frame 22. Each assembly frame 24 is rotatably connected to a cantilever frame 25. Each cantilever frame 25 is equipped with a rotating clamping plate 26, which has multiple T-shaped clamping slots 27. Each cantilever frame 25 has a mounting slot 28 at its bottom, and a third servo motor 29 is installed in each mounting slot 28. The two third servo motors 29 are respectively connected to the two rotating clamping plates 26. A fourth servo motor 30 is mounted on each assembly frame 24, and the two fourth servo motors 30 are used to drive the rotation of the two cantilever frames 25. The rotating work clamping table provides a basic clamping position for the housing of the instrument to be welded, keeping the housing in a relatively fixed state for welding. It also enriches the relative position and posture of the housing to be welded relative to the laser welding head 1, making it more practical. The machine bed 2 is equipped with a slag discharge port 42, and support legs 43 are provided at the four corners of the bottom of the machine bed 2. The machine bed 2 is suspended at the bottom by the four support legs 43. A collection box 44 is provided at the bottom of the machine bed 2 for receiving slag falling from the slag discharge port 42.

[0043] In this embodiment, the laser welding head 1, the first servo motor 6, the electric telescopic rod 13, the electric lifting rod 16, the second servo motor 23, the third servo motor 29, the fourth servo motor 30, the horizontal lead screw sliding component 31, the vertical lead screw sliding component 32, and the fifth servo motor 38 are all commercially available conventional devices known to those skilled in the art. In this invention, we are simply using them without modifying their structure or function. Their setting method, installation method, and electrical connection method can be easily understood by those skilled in the art by following the instructions for use, and will not be described in detail here.

[0044] In summary, the working principle of this laser welding system for instrument manufacturing is as follows: Before use, laser generators are first installed on the two laser welding heads 1. Simultaneously, control circuits are installed on the laser generator, the first servo motor 6, the electric telescopic rod 13, the electric lifting rod 16, the second servo motor 23, the third servo motor 29, the fourth servo motor 30, the horizontal lead screw sliding component 31, the vertical lead screw sliding component 32, and the fifth servo motor 38. An industrial control computer is installed in the control circuit. The industrial control computer can control the operation of the laser generator, the first servo motor 6, the electric telescopic rod 13, the electric lifting rod 16, the second servo motor 23, the third servo motor 29, the fourth servo motor 30, the horizontal lead screw sliding component 31, the vertical lead screw sliding component 32, and the fifth servo motor 38. Furthermore, the laser welding system... The light generator provides a welding beam for the laser welding head 1. During operation, the output shaft of the fifth servo motor 38 is first rotated to drive the transmission gear 39. Since the transmission gear 39 meshes with the external rack 37 on the machine bed 2, its rotational motion is converted into linear motion of the gantry 3 along the dovetail track 34. The gantry 3 is controlled to move backward relative to the machine bed 2 until the synchronous rotation of the two cantilever frames 25 no longer interferes with the gantry 3. Then, the fifth servo motor 38 enters a parking state. The second servo motor 23 is then powered on to adjust the rotation of the main rotating frame 22, thereby alternating the front and rear positions of the two cantilever frames 25. The cantilever frame 25 located at the front serves as the loading and clamping station for the housing, while the cantilever frame 25 located at the rear serves as the welding station for the housing. (See attached diagram.) Figure 15The diagram shows a clamping and welding process where a shell to be welded is formed using a universal clamping frame with T-shaped clamping slots 27. The rotary work clamping table enables clamping of the workpiece and multi-dimensional posture adaptation. The operator places the shell on the rotating clamping plate 26, and the shell is secured using multiple T-shaped clamping slots 27 evenly distributed along the circumference of the rotating clamping plate 26, along with T-bolts or special clamps. The clamping force is controlled by adjusting the bolt tightness to avoid damaging the shell surface. When the shell is fixedly mounted on the rotating clamping plate 26, the fourth servo motor 30 operates to drive... The rotation drive of the cantilever frame 25 facilitates the attitude adjustment of the cantilever frame 25, so as to control the housing to be adjusted between 0° and 90° relative to the horizontal plane, which can adapt to the welding of the side inclined weld. The third servo motor 29 can realize the rotation adjustment of the rotating clamping plate 26, thereby facilitating the rotation adjustment of the housing, so that the housing itself can rotate continuously from 0° to 360°, which facilitates the precise positioning of the circumferential angle of the housing, ensures the matching and alignment of the weld at different circumferential positions of the housing with the laser welding head 1, and also facilitates the switching operation of multiple gaps on the side of the housing.

[0045] Furthermore, the horizontal lead screw slide 31, when energized, enables the intermediate transfer plate 33 to move laterally along the horizontal direction at the top of the gantry 3, while the vertical lead screw slide 32, when energized, enables the spatial displacement frame 4 to adjust its height. Therefore, through the combined operation of the horizontal and vertical lead screw slides 31 and 32, the lateral position and height of the spatial displacement frame 4 can be adjusted. When the housing enters the welding station, the vertical lead screw slide 32 first raises the spatial displacement frame 4 to its limit position. Then, the fifth servo motor 38, when energized, moves the gantry 3 forward relative to the machine bed 2 until the two laser welding heads 1 move above the housing to be welded. Next, the electric adjustment structure adjusts the core posture of the laser welding heads 1. Firstly, the relative distance is adjusted: after the first servo motor 6 starts, the synchronous gear 11 on its output shaft can rotate clockwise or counterclockwise. Because the synchronous gear 11 simultaneously meshes with two parallel and oppositely installed spur racks 12, The rotation of the synchronous gear 11 drives the two racks 12 to move relative to each other along the integrated mounting frame 5, which in turn drives the two sliding plate frames 8 fixed to the racks 12 to slide synchronously relative to each other, thereby adjusting the relative distance between the two adjusting mounting frames 7, and finally adjusting the relative distance between the two laser welding heads 1. Considering the weld seam of the shell and the limitation of the laser focusing distance, when both adjusting mounting frames 7 are in a vertical position, it is advisable to adjust the continuous distance between the two laser welding heads 1 within the range of 50mm-300mm. According to the spatial requirements of the welding position, the operation of the electric telescopic rod 13 can enable the follower slide rod 14 to slide along the adjusting mounting frame 7. The follower slide rod 14 transmits linear motion to the rotating frame 10 through the linkage rod 15. Since the two ends of the linkage rod 15 are rotatably connected to the side connecting shafts of the follower slide rod 14 and the rotating frame 10 respectively, the rotating frame 10 can rotate around the assembly frame 9, ultimately driving the laser welding head 1 to achieve fine-tuning of the angle, meeting the inclination angle requirements of different weld seams such as right angle and oblique angle.

[0046] Furthermore, since the adjusting mounting bracket 7 is rotatably connected to the sliding plate bracket 8 via the hinge seat 40, the adjusting mounting bracket 7 can be rotated and adjusted in the vertical plane around the hinge axis in the hinge seat 40, ultimately adjusting the two adjusting mounting brackets 7 from a vertical posture to a relatively open or relatively closed posture. When the electric lifting rod 16 is running, its lifting rod can drive the synchronous frame 18 to rise and fall in the vertical direction. The two transmission cylinders 19 fixed on the synchronous frame 18 move synchronously. When the height of the transmission cylinders 19 changes, it can drive the transmission rod frame 20 to form a synchronous height change. Since the transmission rod frame 20 is sleeved outside the vertical guide rod 17, the vertical guide rod 17 can provide vertical support for the transmission rod frame 20. Guided by the transmission cylinder 19, the movement of the transmission rod 20 pushes the transmission rod frame 20 to slide along the vertical guide rod 17. The arc-shaped frame 21 hinged on the transmission rod frame 20 moves accordingly. Since the arc-shaped frame 21 is rotatably connected to the hinge plate 41 on the adjustment mounting frame 7, and the curvature of the arc-shaped frame 21 matches the rotation trajectory of the adjustment mounting frame 7, the force transmission can be ensured to be smooth. Ultimately, the adjustment mounting frame 7 is driven to rotate around the hinge seat 40. Through precise control of the electric lifting rod 16, the two adjustment mounting frames 7 can be tilted inward or outward simultaneously, so that the two adjustment mounting frames 7 can be adjusted and cooperate to form a "V" shape or an "octagon" shape, etc., to adapt to the welding requirements of the instrument housing in multiple directions and angles, as shown in the attached figure. Figure 16 The diagram shows the welding operation on the vertical edge of the shell by two adjustable mounting brackets 7 standing in a parallel vertical position. At this time, two electric telescopic rods 13 can be used together to make the welding tilt angle of the two laser welding heads 1 different, so as to achieve the double-sided welding operation of the two laser welding heads 1 relative to the same weld seam. Generally, the operation method of first the inside corner and then the outside corner is selected.

[0047] As attached Figure 17 The diagram shown illustrates a welding operation where the two adjusting mounting brackets 7 are positioned in a "V" shape. Figure 18 The diagram illustrates a welding operation with two adjusting mounting brackets 7 arranged in an "octagon" shape. When the two adjusting mounting brackets 7 are relatively vertical and parallel, it facilitates the insertion of a narrow, elongated housing. When they are arranged in a "V" shape, it facilitates the insertion of housings with small openings and large cavities. When they are arranged in an "octagon" shape, it facilitates welding the exterior of large-sized housings. Once the laser welding head 1 is fully aligned with the welding point of the housing, the laser welding head 1 is activated and welds the housing according to a preset program. During the welding process, the two welding heads can operate synchronously or independently to adapt to different weld requirements, as shown in the attached diagram. Figure 15The diagram shows two laser welding heads 1 performing synchronous welding operations relative to the weld seam. To reduce welding deformation and avoid heat concentration, the two laser welding heads 1 can be controlled to be in different postures during synchronous welding operations, allowing them to perform sequential welding operations relative to the same welding point. The metal slag produced during welding falls under gravity and enters the drawer-type collection box 44 through the slag discharge port 42, preventing accumulation that could affect equipment operation or pollute the environment. After the operation is completed, the laser generator is first powered off to stop supplying laser to the laser welding head 1. Then, each structure is controlled to reset sequentially. The electric adjustment structure and the synchronous adjustment structure drive the laser welding head 1 back to its initial posture. The sliding adjustment structure drives the laser welding head 1 to rise to a safe height. The gantry 3 returns to its initial position under the action of the driving structure. Then, the rotary work clamping table adjusts the welded shell to the loading clamping position and stops moving. The operator releases the clamps and removes the welded shell. Thus, the entire welding process for a single shell is completed. Repeating the above steps can form welding operations for multiple shells.

[0048] 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 system for instrument manufacturing, comprising two laser welding heads (1), characterized in that, It also includes the main body of the equipment, which includes a machine bed (2) and a gantry (3). The gantry (3) is mounted on the machine bed (2). A drive structure is installed between the gantry (3) and the machine bed (2). The drive structure is used to drive the movement of the gantry (3) relative to the machine bed (2). A sliding adjustment structure is installed on the gantry (3). A spatial displacement frame (4) is installed on the sliding adjustment structure. The position adjustment of the spatial displacement frame (4) relative to the gantry (3) can be realized through the sliding adjustment structure. An integrated mounting frame (5) is fixedly connected to the spatial displacement frame (4). An electric adjusting structure is installed on the integrated mounting frame (5). Both laser welding heads (1) are installed on the electric adjusting structure. The operation of the electric adjusting structure can realize the relative posture adjustment of the two laser welding heads (1). A synchronous adjustment structure is installed on the integrated mounting frame (5). The synchronous adjustment structure is used for the auxiliary adjustment of the two laser welding heads (1). A rotary tool is installed on the machine bed (2). The electric adjustment structure, which serves as a clamping platform, includes a first servo motor (6), two adjustment mounting brackets (7), and two sliding plate brackets (8). The two sliding plate brackets (8) are slidably connected to the integrated mounting bracket (5), and the two adjustment mounting brackets (7) are rotatably connected to the two sliding plate brackets (8). The bottom ends of the two adjustment mounting brackets (7) are fixedly connected to an assembly bracket (9). The two laser welding heads (1) are each equipped with a connecting bracket (10), and the two connecting brackets (10) are rotatably connected to the two assembly brackets (9). The two adjustment mounting brackets (7) are each equipped with an angle adjustment component, which is used to adjust the angle of the two laser welding heads (1). The first servo motor (6) is installed at the bottom end of the integrated mounting bracket (5). A synchronous gear (11) is installed on the output shaft of the first servo motor (6). The synchronous gear (11) meshes with and drives two straight racks (12). The two straight racks (12) are fixedly connected to the two sliding plate brackets (8). Both of the aforementioned angle adjustment components include an electric telescopic rod (13), which is respectively mounted on two of the aforementioned adjustment mounting brackets (7). Each of the two electric telescopic rods (13) has a follower slide rod (14) connected to its telescopic rod. The two follower slide rods (14) are slidably fitted within the two adjustment mounting brackets (7). Each follower slide rod (14) is rotatably connected to a linkage rod (15), which is rotatably connected to the two of the aforementioned rotating brackets (10). The synchronous adjustment structure includes an electric lifting rod (16) and two vertical guide rods (17). The electric lifting rod (16)... Installed on the integrated mounting frame (5), the electric lifting rod (16) is equipped with a synchronous frame (18), and two transmission cylinders (19) are fixedly connected to the synchronous frame (18). The two vertical guide rods (17) are respectively fixedly connected to the two sliding plate frames (8). The two vertical guide rods (17) are each slidably connected to a transmission rod frame (20). The two transmission rod frames (20) are each hinged to an arc frame (21). The two arc frames (21) are respectively rotatably connected to the two adjusting mounting frames (7). The two transmission cylinders (19) are respectively slidably connected to the two transmission rod frames (20).

2. The laser welding system for instrument manufacturing according to claim 1, characterized in that, The rotary work clamping table includes a main rotating frame (22), which is rotatably connected to the machine bed (2). A second servo motor (23) is installed inside the machine bed (2). The output shaft of the second servo motor (23) is connected to the main rotating frame (22) via a transmission. Two assembly frames (24) are installed on the main rotating frame (22). Each of the two assembly frames (24) is rotatably connected to a cantilever frame (25). Each of the two cantilever frames (25) is equipped with a rotating clamping disc (2). 6) Both of the two rotating clamping discs (26) are provided with multiple T-shaped clamping slots (27), and both of the two cantilever frames (25) are provided with mounting slots (28) at their bottom ends. Both of the two mounting slots (28) are equipped with third servo motors (29). The two third servo motors (29) are respectively connected to the two rotating clamping discs (26) for transmission. Both of the two assembly frames (24) are equipped with fourth servo motors (30). The two fourth servo motors (30) are respectively used for the rotation drive of the two cantilever frames (25).

3. The laser welding system for instrument manufacturing according to claim 2, characterized in that, The sliding adjustment structure includes a horizontal lead screw sliding component (31) and a vertical lead screw sliding component (32). The horizontal lead screw sliding component (31) is installed on the gantry frame (3), and an intermediate transfer plate (33) is installed on the horizontal lead screw sliding component (31). The vertical lead screw sliding component (32) is installed on the intermediate transfer plate (33), and the spatial displacement frame (4) is installed on the vertical lead screw sliding component (32).

4. A laser welding system for instrument manufacturing according to claim 3, characterized in that, Two dovetail rails (34) are fixedly connected to the machine bed (2), and dovetail sleeves (35) are slidably connected to both dovetail rails (34). Both dovetail sleeves (35) are installed at the bottom of the gantry frame (3).

5. A laser welding system for instrument manufacturing according to claim 4, characterized in that, The drive structure includes an external mounting plate (36) and an external rack (37). The external mounting plate (36) is fixedly connected to the gantry (3). A fifth servo motor (38) is mounted on the external mounting plate (36). A transmission gear (39) that meshes with the external rack (37) is mounted on the output shaft of the fifth servo motor (38).

6. A laser welding system for instrument manufacturing according to claim 5, characterized in that, Each of the two adjustment mounting brackets (7) is fixedly connected with a hinge seat (40) and a hinge plate (41). The two sliding plate brackets (8) are rotatably connected to the two hinge seats (40) respectively, and the two hinge plates (41) are rotatably connected to the two arc-shaped brackets (21) respectively.

7. A laser welding system for instrument manufacturing according to claim 6, characterized in that, The frame bed (2) is provided with a slag discharge port (42), and support legs (43) are provided at the four corners of the bottom of the frame bed (2). The frame bed (2) is suspended at the bottom through the four support legs (43). A collection box (44) is provided at the bottom of the frame bed (2). The collection box (44) is used to receive the slag falling from the slag discharge port (42).

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