A clamping mechanism for a laser welding machine

Abstract

This utility model relates to the technical field of welding machine equipment, specifically a clamping mechanism for a laser welding machine. It includes a fixed base, a central rod on one side of the fixed base, a nail plate mounted on the top of the central rod, a first hydraulic cylinder near the central rod on one side of the fixed base, a first support plate on the top of the first hydraulic cylinder, power components at both ends of the first support plate, and an extension fixing plate on one side of the first support plate. This clamping mechanism for a laser welding machine represents a significant leap forward in positioning and clamping, fundamentally avoiding welding defects caused by positioning deviations. The precise fixing of the object to be welded by this clamping mechanism ensures that the size and positional accuracy of each weld seam meet design requirements, greatly improving the strength and reliability of the weld. This clamping mechanism overcomes the limitations of traditional clamps and the poor versatility of some existing laser clamps.

Description

Technical Field

[0001] This utility model relates to the field of electric welding equipment technology, specifically a clamping mechanism for laser electric welding machines. Background Technology

[0002] Existing laser welding machines have clamping mechanisms that help operators fix the workpieces to be welded, enabling precise welding and improving production efficiency.

[0003] In the booming development of modern manufacturing, welding technology, as a key process, has always been at the forefront of innovation. Laser welding, with its unique advantages such as high precision, high speed, and low heat-affected zone, is increasingly widely used in many fields with extremely stringent requirements for welding quality and precision, including automotive manufacturing, aerospace, electronic equipment, and medical devices. The laser welding machine clamping mechanism, as an indispensable and important component in the laser welding process, directly affects welding quality, production efficiency, and product consistency, occupying a pivotal position in the entire laser welding system. During laser welding, the laser welding machine clamping mechanism undertakes the critical tasks of fixing and positioning the workpiece and ensuring the stability of the welding process. Precise clamping mechanism positioning ensures that the laser beam accurately acts on the welding area, avoiding welding deviations. To improve welding quality and product consistency, a stable clamping mechanism can prevent workpiece displacement or deformation due to thermal stress, laser impact, and other factors during the welding process, ensuring the smooth progress of the welding process. This is especially important for thin-walled, easily deformable workpieces, such as electronic device housings and medical device components. An efficient clamping mechanism design can improve the loading and unloading speed of workpieces, reduce auxiliary time, and thus improve production efficiency. However, traditional welding clamping mechanisms have gradually revealed many limitations when facing the high precision and high flexibility requirements of laser welding. Most traditional clamping mechanisms are designed and manufactured specifically for specific workpieces or welding processes, with fixed structures and difficult adjustments. Once the shape, size, or welding process of the workpiece changes, it is often necessary to redesign and manufacture the clamping mechanism, which is costly and time-consuming.

[0004] A welding machine clamp disclosed in Chinese Patent CN 221247280U has the following features: pressing a positioning rod causes a positioning block to contact the object, at which point a spring is stretched. Then, activating a first pusher allows a limiting block to be inserted into a limiting groove, fixing the position of the positioning block and thus securing the object more firmly on the welding table. This structure does not use a threaded structure, eliminating concerns about sparks during welding and providing high stability. Activating a second pusher allows a guide block to slide within a guide groove, moving the clamping plate and facilitating the clamping of objects of different lengths, reducing limitations in its use. However, this welding machine clamp, while solving the problem, also has the following drawbacks: it can only clamp objects on the platform, and the welding angle is limited. Therefore, a clamping mechanism for laser welding machines is urgently needed to improve these issues. Utility Model Content

[0005] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0006] Therefore, one objective of this utility model is to provide a clamping mechanism for laser welding machines to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0007] To achieve the above objectives, one embodiment of this utility model provides a clamping mechanism for a laser welding machine, including a fixed base, a central rod on one side of the fixed base, a nail plate mounted on the top of the central rod, a first hydraulic cylinder near the central rod on one side of the fixed base, a first support plate on the top of the first hydraulic cylinder, power components at both ends of the first support plate, an extension fixing plate on one side of the first support plate, and a second hydraulic cylinder near the first hydraulic cylinder on one side of the fixed base, a second support plate on the top of the second hydraulic cylinder, and power components at both ends of the second support plate. An extension fixing plate is provided on one side of the second support plate. The power component is provided with a fixing groove. A fixing shaft is provided at the center of the fixing groove. A motor fixing seat is provided at the top of the fixing groove. A drive motor is installed on the top of the motor fixing seat. A connecting shaft is installed on the top of the drive motor. A universal joint is provided at the end of the connecting shaft away from the drive motor. A threaded push rod is connected to one end of the universal joint. A washer is provided at the end of the threaded push rod away from the universal joint. A fixing screw hole is opened on one side of the extension fixing plate. Orientation holes are opened on both sides of the fixing screw hole on the extension fixing plate. An orientation rod is provided on the side of the washer near the extension fixing plate.

[0008] The present invention is further configured such that: the fixed base and the central rod are fixedly connected by a vertical fixed rod, and a rivet is installed on one side of the nail plate, and the rivet is slidably connected to the nail plate, and a spring is provided on the side of the rivet away from the central rod.

[0009] By adopting the above technical solution, the fixing rod can assist in the stability of the central rod and prevent the overall shaking of the equipment during operation. The nail plate is equipped with spring-loaded rivets, which can help fix the object. After disassembly, the spring action of the rivets can make the nail plate return to its original shape.

[0010] The present invention is further configured such that: the first hydraulic cylinder is fixedly connected to the fixed base, and the first hydraulic cylinder is fixedly connected to the first support plate, and the fixing groove of the power component is opened at both ends of the first support plate, and the extension fixing plate is welded to one side of the first support plate.

[0011] By adopting the above technical solution, the first hydraulic cylinder is completely fixed to the side of the fixed base, so that the first hydraulic cylinder can push the first support plate to move normally.

[0012] The present invention is further configured such that: the second hydraulic cylinder is fixedly connected to the fixed base, and the second hydraulic cylinder is fixedly connected to the second support plate, and the fixing groove of the power component is opened at both ends of the second support plate, and the extension fixing plate is welded to one side of the second support plate.

[0013] By adopting the above technical solution, the second hydraulic cylinder is completely fixed to the side of the fixed base, so that the second hydraulic cylinder can push the second support plate to move normally.

[0014] The present invention is further configured such that: the fixed shaft is rotatably connected to the motor mounting base, and the drive motor is rotatably connected to the universal joint via a connecting shaft; the universal joint is welded to the threaded push rod, and the threaded push rod is threadedly connected to the fixed screw hole; the first support plate is welded to one end of the extension fixing plate; a groove is provided on the side of the gasket near the extension fixing plate; the end of the threaded push rod away from the universal joint is engaged with the groove inside the gasket; the directional rod is welded to the gasket; and the directional rod is slidably connected to the directional hole.

[0015] By adopting the above technical solution, the rotation of the drive motor is transmitted to the threaded push rod through the universal joint. The angle of the entire structure allows the structure to operate reasonably. Furthermore, the drive motor can rotate on the fixed shaft through the motor mounting base, which can always stably provide power to the universal joint.

[0016] In summary, the beneficial technical effects of this utility model are as follows:

[0017] 1. This clamping mechanism for laser welding machines represents a significant leap forward in positioning and clamping, fundamentally avoiding welding defects caused by positioning deviations. The precise fixation of the workpiece ensures that the size and positional accuracy of each weld seam meet design requirements, greatly improving welding strength and reliability. This clamping mechanism overcomes the limitations of traditional clamps and some existing laser clamps in terms of poor versatility, possessing superior applicability. It can quickly adapt to the welding needs of workpieces of different shapes, sizes, and materials, improving equipment utilization and enabling the production line to quickly respond to diverse market demands. The clamping mechanism also offers significant advantages in terms of ease of operation and automation, effectively improving production efficiency. In terms of ease of operation, the machine allows for quick clamping and unclamping of workpieces after startup. Compared to manual clamping mechanisms, this significantly reduces auxiliary time and the impact of human error on product quality, making the production process more stable and reliable. Stable clamping performance is fundamental to the smooth operation of laser welding, and this laser welding machine's clamping mechanism has unparalleled advantages in this regard. The mechanism employs a multi-directional collaborative clamping method, setting multiple clamping points at key parts of the workpiece based on its structural characteristics and welding process requirements. This achieves comprehensive and uniform clamping of the workpiece, ensuring the safety and reliability of the welding process, reducing welding defects, and improving the product qualification rate.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the first support plate of this utility model;

[0022] Figure 3 This is a cross-sectional structural diagram of the first support plate of this utility model;

[0023] Figure 4 This is a structural schematic diagram of utility model A;

[0024] Figure 5 This is a schematic diagram of the structure of the second support plate of this utility model;

[0025] Figure 6 This is a structural schematic diagram of the side view of this utility model;

[0026] Figure 7 This is a structural schematic diagram of utility model B.

[0027] In the diagram: 1. Fixed base; 2. Center rod; 3. Nail plate; 4. First hydraulic cylinder; 5. First support plate; 6. Power component; 7. Extension fixing plate; 8. Second hydraulic cylinder; 9. Second support plate; 10. Fixing groove; 11. Fixing shaft; 12. Motor mounting base; 13. Drive motor; 14. Connecting shaft; 15. Universal joint; 16. Threaded push rod; 17. Washer; 18. Fixing screw hole; 19. Orientation hole; 20. Orientation rod; 21. Fixing rod; 22. Rivet; 23. Spring; 24. Groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] Reference Figures 1 to 7 This utility model discloses a clamping mechanism for a laser welding machine, comprising a fixed base 1, a central rod 2 on one side of the fixed base 1, a nail plate 3 mounted on the top of the central rod 2, a first hydraulic cylinder 4 near the central rod 2 on one side of the fixed base 1, a first support plate 5 on the top of the first hydraulic cylinder 4, power components 6 at both ends of the first support plate 5, an extension fixing plate 7 on one side of the first support plate 5, a second hydraulic cylinder 8 near the first hydraulic cylinder 4 on one side of the fixed base 1, a second support plate 9 on the top of the second hydraulic cylinder 8, power components 6 at both ends of the second support plate 9, an extension fixing plate 7 on one side of the second support plate 9, a fixing groove 10 provided in the power component 6, and a fixing rod at the center of the fixing groove 10. A motor mounting base 12 is provided on the top of the fixed shaft 11 and the fixed groove 10. A drive motor 13 is mounted on the top of the motor mounting base 12. A connecting shaft 14 is mounted on the top of the drive motor 13. A universal joint 15 is provided at the end of the connecting shaft 14 away from the drive motor 13. A threaded push rod 16 is connected to one end of the universal joint 15. A washer 17 is provided at the end of the threaded push rod 16 away from the universal joint 15. A fixing screw hole 18 is provided on one side of the extension fixing plate 7. A directional hole 19 is provided on both sides of the fixing screw hole 18 on the extension fixing plate 7. A directional rod 20 is provided on the side of the washer 17 near the extension fixing plate 7. In this embodiment, the universal joint 15 works on the same principle as the universal joint disclosed in Chinese Patent CN213899658U.

[0031] Reference Figures 1 to 7 The fixed base 1 and the center rod 2 are fixedly connected by a vertical fixed rod 21. A rivet 22 is installed on one side of the nail plate 3, and the rivet 22 is slidably connected to the nail plate 3. A spring 23 is provided on the side of the rivet 22 away from the center rod 2. The first hydraulic cylinder 4 is fixedly connected to the fixed base 1 and the first hydraulic cylinder 4 is fixedly connected to the first support plate 5. The fixing groove 10 of the power component 6 is opened at both ends of the first support plate 5. The extension fixing plate 7 is welded to one side of the first support plate 5. The second hydraulic cylinder 8 is fixedly connected to the fixed base 1 and the second hydraulic cylinder 8 is fixedly connected to the second support plate 9. The fixing groove 10 of the power component 6 is opened at both ends of the second support plate 9. The extension fixing plate 7 is welded to one side of the first support plate 5. Plate 7 is welded to one side of the second support plate 9. The fixed shaft 11 is rotatably connected to the motor mounting base 12. The drive motor 13 is rotatably connected to the universal joint 15 through the connecting shaft 14. The universal joint 15 is welded to the threaded push rod 16. The threaded push rod 16 is threadedly connected to the fixed screw hole 18. The first support plate 5 is welded to one end of the extension fixed plate 7. The gasket 17 has a groove 24 on the side near the extension fixed plate 7. The end of the threaded push rod 16 away from the universal joint 15 is engaged with the groove 24 inside the gasket 17. The directional rod 20 is welded to the gasket 17. The directional rod 20 is slidably connected to the directional hole 19. The PLC involved in this patent is prior art. Its working principle is the same as that of the PLC host and PLC system disclosed in Chinese patent CN212460365U.

[0032] The implementation principle of this embodiment is as follows:

[0033] When this equipment needs to clamp an object, the operator first places the clamped side of the object against the nail plate 3. Pressing the rivets 22 on the nail plate 3 helps the operator temporarily stabilize the clamped object. At this point, the equipment is started to clamp the object. The PLC synchronously controls the operation of two second hydraulic cylinders 8, which in turn push the second support plate 9 and the power mechanism forward. When the second hydraulic cylinders 8 complete their action, the PLC synchronously controls the operation of two first hydraulic cylinders 4, which in turn push the first support plate 5 and the power mechanism forward. When the first hydraulic cylinders 4 complete their action, the PLC synchronously controls the operation of four drive motors 13. The drive motors 13 drive the cross-shaped mechanism via the connecting shaft 14. The universal joint 15 rotates, and then the universal joint 15 transmits the rotational force to the threaded push rod 16. The threaded push rod 16 rotates inside the fixed screw hole 18, and then the threaded push rod 16 pushes the pad 17 down through the groove 24 in the pad 17. The guide rod 20 on the pad 17 slides in the guide hole 19, which can ensure the directional downward pressure of the pad 17. When the pad 17 touches the clamped object, the power of the drive motor 13 increases. When the power increases to the threshold, the PLC controls this drive motor 13 to stop running. The other drive motors 13 are the same. When all drive motors 13 stop running, the action of the equipment clamping the object is completed.

[0034] When the equipment needs to disassemble an object, the operator restarts the equipment. The PLC synchronously controls the four drive motors 13 to reverse. When the threaded push rod 16 rotates back to its maximum, the power of the drive motor 13 increases. When the power increases to a threshold, the PLC controls this drive motor 13 to stop running. The other drive motors 13 are run in the same way. When all drive motors 13 stop running, the PLC synchronously controls the first hydraulic cylinder 4 to retract, which in turn drives the first support plate 5 and the power mechanism to retract. After the first hydraulic cylinder 4 completes its action, the PLC synchronously controls the second hydraulic cylinder 8 to retract, which in turn drives the second support plate 9 and the power mechanism to retract. After the second hydraulic cylinder 8 completes its action, the disassembly of the object by the equipment is completed.

[0035] Compared with the prior art, the present invention has the following advantages:

[0036] This clamping mechanism for laser welding machines represents a significant leap forward in positioning and clamping, fundamentally preventing welding defects caused by positioning deviations. The precise fixation of the workpiece ensures that the size and positional accuracy of each weld seam meet design requirements, greatly enhancing welding strength and reliability. This clamping mechanism overcomes the limitations of traditional clamps and some existing laser clamps in terms of poor versatility, possessing superior applicability. It can quickly adapt to the welding needs of workpieces of different shapes, sizes, and materials, improving equipment utilization and enabling production lines to rapidly respond to diverse market demands.

[0037] The clamping mechanism offers significant advantages in terms of ease of operation and automation, effectively improving production efficiency. Regarding ease of operation, workpiece clamping and unclamping can be completed quickly after equipment startup. Compared to manual clamping mechanisms, this greatly shortens auxiliary time, reduces the impact of human error on product quality, and makes the production process more stable and reliable. Stable clamping performance is fundamental to ensuring the smooth operation of the laser welding process, and this laser welding machine's clamping mechanism has unparalleled advantages in this regard. The mechanism employs a multi-directional collaborative clamping method, setting multiple clamping points at key parts of the workpiece according to its structural characteristics and welding process requirements. This achieves comprehensive and uniform clamping of the workpiece, ensuring the safety and reliability of the welding process, reducing welding defects, and improving product qualification rates.

[0038] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A clamping mechanism for a laser welding machine, characterized in that: The system includes a fixed base (1), a central rod (2) on one side of the fixed base (1), a nail plate (3) on the top of the central rod (2), a first hydraulic cylinder (4) near the central rod (2) on one side of the fixed base (1), a first support plate (5) on the top of the first hydraulic cylinder (4), power components (6) on both ends of the first support plate (5), an extension fixing plate (7) on one side of the first support plate (5), a second hydraulic cylinder (8) near the first hydraulic cylinder (4) on one side of the fixed base (1), a second support plate (9) on the top of the second hydraulic cylinder (8), power components (6) on both ends of the second support plate (9), an extension fixing plate (7) on one side of the second support plate (9), and a fixing groove (1) on the power component (6). 0), a fixed shaft (11) is provided at the center of the fixed groove (10), a motor mounting seat (12) is provided at the top of the fixed groove (10), a drive motor (13) is installed at the top of the motor mounting seat (12), a connecting shaft (14) is installed at the top of the drive motor (13), a universal joint (15) is provided at the end of the connecting shaft (14) away from the drive motor (13), a threaded push rod (16) is connected at one end of the universal joint (15), a washer (17) is provided at the end of the threaded push rod (16) away from the universal joint (15), a fixed screw hole (18) is provided on one side of the extension fixing plate (7), a directional hole (19) is provided on both sides of the fixed screw hole (18) of the extension fixing plate (7), and a directional rod (20) is provided on the side of the washer (17) close to the extension fixing plate (7).

2. The clamping mechanism for a laser welding machine according to claim 1, characterized in that: The fixed base (1) and the center rod (2) are fixedly connected by a vertical fixed rod (21), and a rivet (22) is installed on one side of the nail plate (3), and the rivet (22) is slidably connected to the nail plate (3), and a spring (23) is provided on the side of the rivet (22) away from the center rod (2).

3. The clamping mechanism for a laser welding machine according to claim 1, characterized in that: The first hydraulic cylinder (4) is fixedly connected to the fixed base (1), and the first hydraulic cylinder (4) is fixedly connected to the first support plate (5). The fixing groove (10) of the power component (6) is opened at both ends of the first support plate (5), and the extension fixing plate (7) is welded to one side of the first support plate (5).

4. The clamping mechanism for a laser welding machine according to claim 1, characterized in that: The second hydraulic cylinder (8) is fixedly connected to the fixed base (1), and the second hydraulic cylinder (8) is fixedly connected to the second support plate (9). The fixing groove (10) of the power component (6) is opened at both ends of the second support plate (9), and the extension fixing plate (7) is welded to one side of the second support plate (9).

5. A clamping mechanism for a laser welding machine according to claim 1, characterized in that: The fixed shaft (11) is rotatably connected to the motor mounting base (12), and the drive motor (13) is rotatably connected to the universal joint (15) through the connecting shaft (14). The universal joint (15) is welded to the threaded push rod (16), and the threaded push rod (16) is threadedly connected to the fixed screw hole (18). The first support plate (5) is welded to one end of the extension fixing plate (7).

6. The clamping mechanism for a laser welding machine according to claim 1, characterized in that: The gasket (17) has a groove (24) on the side near the extension fixing plate (7), and the end of the threaded top rod (16) away from the universal joint (15) is engaged with the groove (24) inside the gasket (17), and the directional rod (20) is welded to the gasket (17), and the directional rod (20) is slidably connected to the directional hole (19).

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