Laser welding device for LED light bar processing

Abstract

The application relates to the technical field of LED lamp strip processing, in particular to a laser welding device for LED lamp strip processing, which comprises a base, a working platform is fixedly installed on one side of the upper end of the base, and a welding mechanism is installed on the other side; two groups of positioning mechanisms are symmetrically arranged on the upper end of the working platform; the positioning mechanism comprises a lead screw fixedly installed on the upper end of the working platform; a welding platform is threadedly connected to the working end of the lead screw; a conveying platform is fixedly connected to one end of the welding platform; and a limiting assembly is arranged on the welding platform. The device can realize wire positioning, lamp strip flattening, automatic welding and heat shrink tube covering in the wire and LED lamp strip welding process, and can greatly improve the welding efficiency and stability, guarantee the firmness and reliability of the welding points, have excellent protection effect, and improve the product quality and production efficiency.

Description

Technical Field

[0001] This invention relates to the field of LED light strip processing technology, and more particularly to a laser welding apparatus for LED light strip processing. Background Technology

[0002] LED light strips are lighting products consisting of multiple LED beads sequentially mounted on a flexible or rigid circuit board. They are typically long and narrow, and are characterized by their small size, high brightness, low energy consumption, and long lifespan. They often have an adhesive layer on the back, making them easy to stick in various locations. Because they are flexible and can be cut, they are commonly used in decorative lighting, auxiliary lighting, and in architectural, home, and automotive applications.

[0003] However, there are several problems with the current LED strip welding process. First, LED strips are mostly rolled up and stored, which makes the welded parts prone to warping and causing welding failure. Second, when two LED strips need to be lengthened and bent for use, if they are welded together directly, the solder joint is prone to breakage due to stress concentration during bending. In addition, heat shrink tubing is usually required for protection after welding, but the heat shrink tubing has poor flexibility. Forced bending will cause the solder joint to be subjected to excessive stress, which is also easy to damage, thus affecting the reliability and service life of the overall connection. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned problems existing in the prior art, and to propose a laser welding device for LED light strip processing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a laser welding device for LED light strip processing, comprising a base, a working platform fixedly installed on one side of the upper end of the base, and a welding mechanism installed on the other side, two sets of positioning mechanisms symmetrically arranged on the upper end of the working platform, the positioning mechanism comprising a lead screw fixedly installed on the upper end of the working platform, the working end of the lead screw being threadedly connected to the welding platform, one end of the welding platform being fixedly connected to a conveying platform, and a limiting component being provided on the welding platform;

[0006] A transport assembly is provided between the two sets of positioning mechanisms. A transport housing is detachably installed on one end of the transport platform away from the transport assembly. Several heat shrink tubes are fitted on the transport housing. An adsorption assembly is provided on one side of the transport housing and mounted on the base.

[0007] The end of the conveying housing away from the conveying platform is provided with a first mounting housing and a second mounting housing fixedly installed on the side wall of the base. A third rotating block is rotatably installed at one end of the first mounting housing and a fourth rotating block is rotatably installed at the other end. A second rotating block is rotatably installed at one end of the second mounting housing. The second rotating block is close to the third rotating block. A clamping and adsorption mechanism is provided between the second rotating block and the third rotating block. A hot pressing mechanism is provided between the first mounting housing and the second mounting housing.

[0008] Preferably, the welding mechanism includes a movable platform slidably mounted on the upper end of the base. A laser emitter is slidably mounted on one end of the movable platform near the working platform, and a wire feeding device is fixedly mounted on the other end of the movable platform near the working platform. The working ends of both the laser emitter and the wire feeding device face one side of the working platform. A solder wire is mounted on the working end of the wire feeding device, and the solder wire is located below the working end of the laser emitter.

[0009] Preferably, a number of sets of second conveying rollers are rotatably installed on the inner side of the conveying platform, and a number of first pressing rollers are rotatably installed above one end of the conveying platform near the welding platform. The left and right ends of the first pressing rollers are provided with first electric telescopic rods fixedly installed on the working platform, and the telescopic ends of the first electric telescopic rods are connected to the first pressing rollers through connectors.

[0010] Preferably, the limiting component includes two upper and lower rubber rollers rotatably mounted on the upper surface of the welding platform. The distance between the two rubber rollers is adjustable and they are located on the side close to the conveying platform. A baffle mounted on the upper surface of the welding platform is provided between the two rubber rollers and the conveying platform. The baffle is designed to be telescopic. Two clamping blocks are installed on the upper surface of the welding platform away from the conveying platform. The distance between the two clamping blocks is adjustable.

[0011] Preferably, the transport assembly includes a plurality of first conveying rollers disposed between two sets of positioning mechanisms. Each of the left and right ends of the first conveying rollers is provided with a second electric telescopic rod fixedly installed on the working platform. The telescopic ends of the second electric telescopic rods are connected to the first conveying rollers through connectors.

[0012] Preferably, the adsorption assembly includes a mounting bracket fixedly mounted on the base and a second hydraulic push rod fixedly connected to the surface of the fourth rotating block. A third electric telescopic rod is fixedly mounted on the upper end and side of the mounting bracket. The third electric telescopic rod is arranged parallel to the conveying housing, and a first suction cup is fixedly connected to the telescopic end of the third electric telescopic rod. The adsorption end of the first suction cup faces the heat shrink tubing side. A second suction cup is fixedly mounted on the telescopic end of the second hydraulic push rod. The second suction cup works in cooperation with the first suction cup.

[0013] Preferably, both the first and second mounting housings are provided with a drive assembly for driving the second, third, and fourth rotating blocks to rotate. The drive assembly includes a second motor fixedly installed inside the first or second mounting housing. A second gear is fixedly connected to the output shaft of the second motor. A first gear is fixedly connected to one end of the second, third, and fourth rotating blocks located inside the mounting housing. The first gear meshes with the second gear.

[0014] Preferably, the clamping and adsorption mechanism includes two third hydraulic push rods fixedly installed on the surfaces of the second rotating block and the third rotating block. The telescopic end of one third hydraulic push rod is fixedly connected to a first U-shaped plate, and the telescopic end of the other third hydraulic push rod is fixedly connected to a second U-shaped plate. A third suction cup is installed inside both the first U-shaped plate and the second U-shaped plate.

[0015] Preferably, the hot pressing mechanism includes a first hydraulic push rod fixedly mounted on the surface of the first mounting housing. The telescopic end of the first hydraulic push rod is fixedly connected to an arc-shaped plate. The arc-shaped plate has a hollow interior and air holes are evenly distributed on its upper surface. A hot air system connected to the interior of the arc-shaped plate is provided on the base. A fifth hydraulic push rod is fixedly connected to the surface of the second mounting housing. A first motor is fixedly connected to the telescopic end of the fifth hydraulic push rod. A first rotating block is fixedly mounted on the output end of the first motor. A fourth hydraulic push rod is fixedly mounted on the surface of the first rotating block. An installation rod is fixedly mounted on the telescopic end of the fourth hydraulic push rod. A second pressing roller is rotatably mounted on the side of the installation rod near the outer surface of the arc-shaped plate. The second pressing roller is a heating roller. The arc-shaped plate and the second pressing roller are both located behind the first U-shaped plate and the second U-shaped plate.

[0016] Preferably, the hot air system includes a hot air blower fixedly installed on the base. The air outlet of the hot air blower is connected to the inner cavity of the arc-shaped plate through a flexible hose. The hot air blown out by the hot air blower enters the inner cavity of the arc-shaped plate through the flexible hose and is blown out through the air holes on the arc-shaped plate.

[0017] Compared with existing technologies, the advantages of this invention are:

[0018] 1. This invention adjusts the position of the welding platform by means of a lead screw, and combines a clamping block and a rubber roller to precisely clamp and position the wire. The clamping block adopts a full contact design that matches the contour of the wire, increasing the contact area and improving stability. At the same time, it effectively disperses pressure to prevent the wire from deforming or scratching. The rubber roller is used to limit the separation of the wire and ensure that the wire remains stable before welding.

[0019] 2. The present invention sets multiple sets of controllable first pressing rollers on the conveying platform, which can roll and statically press the curled LED light strip to ensure that the welding end is flat and avoid the light strip from lifting and causing welding failure. Its intermittent rolling method can also eliminate the overall curvature of the light strip. After the welding positioning is completed, it maintains continuous pressure, improving the stability and reliability of welding.

[0020] 3. In the welding process, the present invention uses a laser emitter and a wire feeding device to quickly melt and fill the solder wire, resulting in high-quality solder joints and strong connections. Compared with manual operation, this device achieves automated rolling and positioning, which greatly reduces operation time, reduces reliance on personnel skill, and improves overall welding efficiency and consistency.

[0021] 4. After welding is completed, the device can automatically cover and shrink the heat shrink tubing. Through the cooperation of multiple suction cups, U-shaped plates and arc plates, combined with hot air and roller pressure, the heat shrink tubing is uniformly shrunk and tightly adhered to the weld point, ensuring that the weld point has good sealing and insulation properties, preventing moisture, dust or chemical substances from entering, thereby significantly improving welding quality and durability.

[0022] In summary, this invention can automate the entire process of wire positioning, LED strip flattening, automatic welding, and heat shrink tubing application during the welding of wires and LED strips, significantly improving welding efficiency and stability, ensuring strong and reliable welds with excellent protective effects, and improving overall product quality and production efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the laser welding device for LED strip processing proposed in this invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the overall structure of the laser welding device for LED strip processing proposed in this invention. Figure 2 ;

[0025] Figure 3 for Figure 2 Enlarged detail image of point A in the middle;

[0026] Figure 4 This is a schematic diagram of the working platform of the laser welding device for LED light strip processing proposed in this invention;

[0027] Figure 5 This is a full cross-sectional schematic diagram of the working platform of the laser welding device for LED light strip processing proposed in this invention;

[0028] Figure 6 This is a side view of the conveyor housing of the laser welding apparatus for LED strip processing proposed in this invention;

[0029] Figure 7 This is a schematic diagram of the heat shrink tubing structure of the laser welding device for LED light strip processing proposed in this invention;

[0030] Figure 8 This is a schematic diagram of the arc plate structure of the laser welding device for LED light strip processing proposed in this invention;

[0031] Figure 9 This is a full cross-sectional structural diagram of the second mounting housing of the laser welding device for LED light strip processing proposed in this invention.

[0032] In the diagram: 1. Base, 2. Moving platform, 3. Laser emitter, 4. Wire feeding device, 5. Collection frame, 6. Hot air blower, 7. Working platform, 8. 9. LED light strip, 10. Solder wire, 11. Conveying platform, 12. First pressing roller, 13. First electric telescopic rod, 14. Welding platform, 15. Rubber roller, 16. Clamping block, 17. First conveying roller, 18. Second electric telescopic rod, 19. Wire, 20. Baffle, 21. Lead screw, 22. Conveying housing, 23. Heat shrink tubing, 24. Third electric telescopic rod, 25. First suction cup, 26. Arc plate, 27. First mounting housing, 28. Second conveying roller, 29. Second U-shaped plate, 30. Second pressing roller, 31. First hydraulic push rod, 32. Second hydraulic push rod, 33. Third hydraulic push rod, 34. Second suction cup, 35. Third suction cup, 36. Second mounting housing, 37. Fourth hydraulic push rod, 38. First motor, 39. Fifth hydraulic push rod, 40. First rotating block, 41. Second rotating block, 42. Third rotating block, 43. Fourth rotating block, 44. Second motor, 45. First gear, 46. Second gear. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] Reference Figures 1 to 9 A laser welding device for LED light strip processing includes a base 1. A movable platform 2 is slidably mounted on one side of the upper end of the base 1, and a working platform 7 is fixedly mounted on the other side. A laser emitter 3 is slidably mounted on the end of the movable platform 2 near the working platform 7. The laser emitter 3 is existing technology, and its specific structural design will not be described in detail here. The working end of the laser emitter 3 faces the working platform 7. A wire feeding device 4 is fixedly mounted on the end of the movable platform 2 near the working platform 7. The wire feeding device 4 is also existing technology, and its working end faces the working platform 7. A solder wire 9 is installed on the working end of the wire feeding device 4, and the solder wire 9 is located just below the working end of the laser emitter 3.

[0035] Two sets of positioning mechanisms are symmetrically arranged on the upper end of the working platform 7. The positioning mechanism includes a lead screw 20 fixedly installed on the upper end of the working platform 7. The working end of the lead screw 20 is threadedly connected to a welding platform 13. The end of the welding platform 13 away from the other set of positioning mechanisms is fixedly connected to a conveying platform 10. Under the action of the lead screw 20, the conveying platform 10 moves synchronously with the welding platform 13. An LED light strip 8 is placed on the conveying platform 10. Several sets of second conveying rollers 28 are rotatably installed on the inner side of the conveying platform 10. The second conveying rollers 28 are used to transport the LED light strip 8. Several first pressing rollers 11 are rotatably installed above the end of the conveying platform 10 near the welding platform 13. The left and right ends of the first pressing rollers 11 are provided with first electric telescopic rods 12 fixedly installed on the working platform 7. The telescopic ends of the first electric telescopic rods 12 are connected to the first pressing rollers 11 through connectors.

[0036] Two rubber rollers 14 are rotatably mounted on the upper surface of the welding platform 13 near the conveyor platform 10. The distance between the two rubber rollers 14 is adjustable. A baffle 19 is installed on the upper end of the welding platform 13 between the two rubber rollers 14 and the conveyor platform 10. The baffle 19 is telescopic. Two clamping blocks 15 are installed on the upper surface of the welding platform 13 away from the conveyor platform 10. The distance between the two clamping blocks 15 is adjustable. The two rubber rollers 14 are used to clamp the separated parts of the two wires 18, while the two clamping blocks 15 are used to clamp the joined parts of the two wires 18.

[0037] Several first conveying rollers 16 are provided between the two sets of positioning mechanisms. The left and right ends of the first conveying rollers 16 are provided with second electric telescopic rods 17 fixedly installed on the working platform 7. The telescopic ends of the second electric telescopic rods 17 are connected to the first conveying rollers 16 through connectors.

[0038] One of the conveying platforms 10 has a conveying housing 21 detachably mounted at the end away from the first conveying roller 16. Several heat shrink tubes 22 are fitted on the conveying housing 21. When the LED light strip 8 and the wire 18 move to the right, the LED light strip 8 and the wire 18 will pass through the multiple heat shrink tubes 22. A mounting bracket is fixedly mounted on the base 1 on one side of the conveying housing 21. A third electric telescopic rod 23 is fixedly mounted on the upper end and side of the mounting bracket. The third electric telescopic rod 23 is arranged parallel to the conveying housing 21, and the telescopic end of the third electric telescopic rod 23 is fixedly connected to a first suction cup 24. The suction end of the first suction cup 24 faces the heat shrink tube 22 and is used to suction and fix the heat shrink tube 22.

[0039] The end of the conveyor housing 21 away from the conveyor platform 10 is provided with a first mounting housing 27 and a second mounting housing 36, which are fixedly installed on the side wall of the base 1. The first mounting housing 27 and the second mounting housing 36 are symmetrically arranged. A third rotating block 42 is rotatably mounted on the end of the first mounting housing 27 near the second mounting housing 36, a second rotating block 41 is rotatably mounted on the end of the second mounting housing 36 near the first mounting housing 27, and a fourth rotating block 43 is rotatably mounted on the end of the first mounting housing 27 away from the second mounting housing 36. Both the first mounting housing 27 and the second mounting housing 36 are provided with drive components. The drive assembly is used to drive the second rotating block 41, the third rotating block 42, and the fourth rotating block 43 to rotate. It includes a second motor 44 fixedly installed inside the first mounting housing 27 or the second mounting housing 36. A second gear 46 is fixedly connected to the output shaft of the second motor 44. A first gear 45 is fixedly connected to one end of the second rotating block 41, the third rotating block 42, and the fourth rotating block 43 located inside the mounting housing. The first gear 45 meshes with the second gear 46, so that when the second motor 44 is running, the corresponding rotating block can be driven to rotate through the cooperation of the first gear 45 and the second gear 46.

[0040] Both the second rotating block 41 and the third rotating block 42 have third hydraulic push rods 33 fixedly connected to their surfaces. One third hydraulic push rod 33 has a first U-shaped plate 25 fixedly connected to its telescopic end, and the other third hydraulic push rod 33 has a second U-shaped plate 29 fixedly connected to its telescopic end. Both the first U-shaped plate 25 and the second U-shaped plate 29 have third suction cups 35 installed inside them. The fourth rotating block 43 has a second hydraulic push rod 32 fixedly connected to its surface. The telescopic end of the second hydraulic push rod 32 has a second suction cup 34 fixedly installed. The second suction cup 34 works in conjunction with the first suction cup 24 to adsorb the heat shrink tubing 22.

[0041] A first hydraulic push rod 31 is fixedly installed on the surface of the first mounting housing 27. An arc-shaped plate 26 is fixedly connected to the telescopic end of the first hydraulic push rod 31. The arc-shaped plate 26 has a hollow interior and air holes are evenly distributed on its upper surface. A hot air blower 6 is fixedly installed on the base 1. The air outlet of the hot air blower 6 is connected to the inner cavity of the arc-shaped plate 26 through a hose. The hot air blown out by the hot air blower 6 enters the inner cavity of the arc-shaped plate 26 through the hose and is blown out through the air holes on the arc-shaped plate 26.

[0042] A fifth hydraulic push rod 39 is fixedly connected to the surface of the second mounting housing 36. A first motor 38 is fixedly connected to the telescopic end of the fifth hydraulic push rod 39. A first rotating block 40 is fixedly installed at the output end of the first motor 38. A fourth hydraulic push rod 37 is fixedly installed on the surface of the first rotating block 40. An installation rod is fixedly installed at the telescopic end of the fourth hydraulic push rod 37. A second pressing roller 30 is rotatably installed on the side of the installation rod near the outer surface of the arc plate 26. The second pressing roller 30 is a heating roller with a heating function. The arc plate 26 and the second pressing roller 30 are both located behind the first U-shaped plate 25 and the second U-shaped plate 29.

[0043] A collection frame 5 is placed below the first mounting housing 27. The collection frame 5 is used to collect the processed LED light strips 8 and wires 18.

[0044] In use, the wires 18 connecting the LED light strip 8 are first trimmed to the required length, and the outer shell of the wires 18 is stripped with wire strippers to expose the internal conductors. Then, the position of the welding platform 13 is adjusted using the lead screw 20, and the wires 18 are clamped using the rubber rollers 14 on both sides and the clamping blocks 15. The clamping blocks 15 clamp the portion where the two wires 18 are joined. The shape inside the clamping blocks 15 perfectly matches the contour of the wires 18, increasing the contact area through contour matching and ensuring a firm clamping. Furthermore, full contour contact distributes pressure across the entire contact surface, reducing the risk of scratches or deformation. The rubber rollers 14 clamp the separated portions of the two wires 18. Since the shape of the two wires 18 is uncertain after separating at the ends, the upper and lower clamping of the rubber rollers 14 provides good limiting for the separated wires 18.

[0045] After adjusting the position of the welding platform 13 and clamping the wire 18, the LED strip 8 is placed on the conveyor platforms 10 on both sides. The second conveyor roller 28 starts to move the LED strip 8 until it touches the baffle 19. The second conveyor roller 28 then stops rotating. At this point, the positive wire is aligned with the positive pad of the LED strip, and the negative wire is aligned with the negative pad, with the conductors fully contacting the pads. This completes the positioning of the LED strip 8 and the wire 18 before welding. Furthermore, in general, the LED strip 8 is rolled up for storage, which means that the cut LED strip 8 may have a certain curvature. If the LED strip 8 and the wire 18 are directly welded in this case, the LED strip 8 at the weld point is prone to lifting, leading to welding failure. Therefore, when the LED light strip 8 moves on the conveyor platform 10, the first pressing roller 11 starts to rotate under the drive of the small motor. At the same time, the first electric telescopic rod 12 drives the first pressing roller 11 to move up and down. In this way, during the movement of the LED light strip 8, the multiple first pressing rollers 11 first perform high-intensity rolling pressure on the end of the LED light strip 8 to be welded to ensure the flatness of the welding part. Then, as the LED light strip 8 continues to move, the multiple first pressing rollers 11 intermittently roll the entire LED light strip 8 to eliminate the overall curvature.

[0046] After the LED strip 8 stops moving, the first pressing roller 11 stops rotating and instead applies continuous static pressure to the LED strip 8, keeping it stationary on the conveyor platform 10 and ensuring the stability of the LED strip 8 during welding. After fixing the LED strips 8 on both sides, the laser emitter 3 is moved to directly above the area to be welded via the moving platform 2. The laser emitter 3 is then activated, focusing the laser beam onto the area to be welded. Preheating is achieved through laser radiation, and then the solder wire 9 is moved to the area to be welded via the wire feeding device 4. The high energy density of the laser causes the solder wire 9 to melt rapidly and flow into the gap between the LED strip 8 and the wire 18. When the welding process is complete and the solder joint is satisfactory, the laser emitter 3 is turned off. At this point, the molten solder wire 9 begins to cool and solidify, forming a strong solder joint. The above operation is repeated for the other three areas to be welded, finally completing the welding between the LED strip 8 and the wire 18. Traditional welding preparation requires manual operation to roll and position the LED light strip 8 and the wire 18, which is time-consuming and depends on the operator's skill level. With this device, the operator only needs to adjust the welding platform 13 according to the length of the wire 18 and clamp the wire 18. The device will automatically complete the roll and position of the LED light strip 8 and the wire 18, which significantly improves welding efficiency.

[0047] After the LED light strip 8 and the wire 18 are welded, the first pressing roller 11, the rubber roller 14, and the clamping block 15 are lifted, and the baffle 19 is retracted. Then, the first conveying roller 16 and the second conveying roller 28 are started, which drives the LED light strip 8 and the wire 18 on both sides to move to the right. The height of the first conveying roller 16 can be adjusted by the second electric telescopic rod 17, so as to flexibly convey the LED light strip 8 or the wire 18.

[0048] Before welding, prepare a corresponding number of heat shrink tubing 22s to fit onto the conveyor housing 21, based on the required number of LED strips 8 to be welded. Then, secure the conveyor housing 21 to the conveyor platform 10 using end clips. As the LED strips 8 and wires 18 continue to move to the right, they will pass through multiple heat shrink tubing 22s. Since the heat shrink tubing 22s are fitted onto the conveyor housing 21, the LED strips 8 and wires 18 can easily pass inside the heat shrink tubing 22s. Subsequently, the LED strips 8 extend from the rightmost part of the conveyor housing 21, passing sequentially through the second U-shaped plate 29 and the first U-shaped plate 25. When the welding point is about to extend, activate the third suction cup 35 inside the first U-shaped plate 25 to suction the LED strips 8 from the back. This allows for quick and safe fixation of the LED strips 8 without damaging their surface. Both the first U-shaped plate 25 and the second U-shaped plate 29 are equipped with a third hydraulic push rod 33. The first mounting housing 27 and the second mounting housing 36 are fixedly mounted on the base 1. The second rotating block 41 is rotatably connected to the second mounting housing 36, and the third rotating block 42 and the fourth rotating block 43 are rotatably connected to both sides of the first mounting housing 27, respectively. Multiple sets of second motors 44, first gears 45, and second gears 46 can drive the first U-shaped plate 25, the second U-shaped plate 29, and the second suction cup 34 to rotate, respectively. Therefore, when the third suction cup 35 inside the first U-shaped plate 25 attracts the LED light strip 8, the first U-shaped plate 25 begins to rotate, driving the LED light strip 8 through the arc plate 26 and the second pressing roller 30. Then, the first U-shaped plate 25 stops rotating. At this time, the welding point between the LED light strip 8 and the wire 18 is exactly located between the arc plate 26 and the second pressing roller 30.

[0049] During this process, when the welding point moves below the first suction cup 24, the first suction cup 24 and the second suction cup 34 attract the heat shrink tube 22 from three sides. Then, the third electric telescopic rod 23 extends and the second hydraulic push rod 32 rotates, causing the heat shrink tube 22 to detach from the conveyor housing 21 and instead fit onto the welding point of the LED light strip 8 and the wire 18. Then, the first suction cup 24 releases, and the second suction cup 34 continues to move synchronously with the welding point along with the heat shrink tube 22 until the heat shrink tube 22 and the welding point are located between the arc plate 26 and the second pressing roller 30. Then, the second U-shaped plate 29 is rotated so that the third suction cup 35 inside it attracts the wire 18 on the other side of the welding point. The first hydraulic push rod 31 is then extended so that the heat shrink tube 22 contacts the arc plate 26. Then, the third hydraulic push rods 33 on both sides are slightly contracted so that the heat shrink tube 22 and the arc plate 26 fit more tightly. At this point, the hot air blower 6 is connected to the arc-shaped plate 26 via a flexible hose. The arc-shaped plate 26 is hollow inside, and its upper surface has many air holes. The hot air blown out by the hot air blower 6 acts on the heat shrink tubing 22 through the air holes, initially preheating the heat shrink tubing 22. The second pressing roller 30 is a heating roller. When the first motor 38 starts, the first rotating block 40 rotates, driving the fourth hydraulic push rod 37 to rotate, thereby causing the second pressing roller 30 to rotate along the arc of the arc-shaped plate 26, starting to heat and roll the heat shrink tubing 22 simultaneously, so that the heat shrink tubing 22 naturally conforms to the bending trajectory after shrinking due to heat. In addition, the rolling ensures that the heat shrink tubing 22 fits tightly against the welding point, eliminating gaps and preventing moisture, dust, or chemicals from entering. The arc-shaped plate 26 is installed on the first hydraulic push rod 31 by a snap-fit, and arc-shaped plates 26 with different curvatures can be replaced as needed to adapt to different process requirements. When replacing different curved plates 26, the center and radius of rotation of the second pressing roller 30 can be changed by adjusting the lengths of the fourth hydraulic push rod 37 and the fifth hydraulic push rod 39, thereby changing the curvature of the second pressing roller 30 to fit the curvature of different curved plates 26. After the heat shrink tubing 22 is tightly attached to the welding point, the third suction cup 35 is released, and the LED light strip 8 and wire 18 will continue to move until they fall into the collection frame 5, at which point the second pressing roller 30 will roll over the new heat shrink tubing 22.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser welding device for LED light strip processing, comprising a base (1), characterized in that, A working platform (7) is fixedly installed on one side of the upper end of the base (1), and a welding mechanism is installed on the other side. Two sets of positioning mechanisms are symmetrically arranged on the upper end of the working platform (7). The positioning mechanism includes a lead screw (20) fixedly installed on the upper end of the working platform (7). The working end of the lead screw (20) is threadedly connected to a welding platform (13). One end of the welding platform (13) is fixedly connected to a conveying platform (10). A limit component is provided on the welding platform (13). A transport assembly is provided between the two sets of positioning mechanisms. A transport housing (21) is detachably installed on one end of the transport platform (10) away from the transport assembly. Several heat shrink tubes (22) are fitted on the transport housing (21). An adsorption assembly is provided on one side of the transport housing (21) and mounted on the base (1). The end of the conveying housing (21) away from the conveying platform (10) is provided with a first mounting housing (27) and a second mounting housing (36) fixedly installed on the side wall of the base (1). A third rotating block (42) is rotatably installed at one end of the first mounting housing (27), and a fourth rotating block (43) is rotatably installed at the other end. A second rotating block (41) is rotatably installed at one end of the second mounting housing (36). The second rotating block (41) is close to the third rotating block (42). A clamping and adsorption mechanism is provided between the second rotating block (41) and the third rotating block (42). A hot pressing mechanism is provided between the first mounting housing (27) and the second mounting housing (36). The clamping and adsorption mechanism includes two third hydraulic push rods (33) fixedly installed on the surfaces of the second rotating block (41) and the third rotating block (42). The telescopic end of one third hydraulic push rod (33) is fixedly connected to a first U-shaped plate (25), and the telescopic end of the other third hydraulic push rod (33) is fixedly connected to a second U-shaped plate (29). A third suction cup (35) is installed inside both the first U-shaped plate (25) and the second U-shaped plate (29).

2. The laser welding apparatus for LED light strip processing according to claim 1, characterized in that, The welding mechanism includes a movable platform (2) that is slidably mounted on the upper end of the base (1). A laser emitter (3) is slidably mounted on one end of the movable platform (2) near the working platform (7). A wire feeding device (4) is fixedly mounted on one end of the movable platform (2) near the working platform (7). The working ends of the laser emitter (3) and the wire feeding device (4) are both facing the working platform (7). A solder wire (9) is mounted on the working end of the wire feeding device (4). The solder wire (9) is located below the working end of the laser emitter (3).

3. The laser welding apparatus for LED light strip processing according to claim 1, characterized in that, Several sets of second conveying rollers (28) are rotatably installed on the inner side of the conveying platform (10). Several first pressing rollers (11) are rotatably installed above one end of the conveying platform (10) near the welding platform (13). The left and right ends of the first pressing rollers (11) are provided with first electric telescopic rods (12) fixedly installed on the working platform (7). The telescopic ends of the first electric telescopic rods (12) are connected to the first pressing rollers (11) through connectors.

4. The laser welding apparatus for LED light strip processing according to claim 1, characterized in that, The limiting component includes two upper and lower rubber rollers (14) rotatably mounted on the upper surface of the welding platform (13). The distance between the two rubber rollers (14) is adjustable and located on the side close to the conveying platform (10). A baffle (19) is provided between the two rubber rollers (14) and the conveying platform (10) and is mounted on the upper end of the welding platform (13). The baffle (19) adopts a telescopic design. Two clamping blocks (15) are installed on the upper surface of the welding platform (13) away from the conveying platform (10). The distance between the two clamping blocks (15) is adjustable.

5. The laser welding apparatus for LED light strip processing according to claim 1, characterized in that, The transport assembly includes several first conveying rollers (16) located between two sets of positioning mechanisms. Each of the left and right ends of the first conveying rollers (16) is provided with a second electric telescopic rod (17) fixedly installed on the working platform (7). The telescopic ends of the second electric telescopic rods (17) are connected to the first conveying rollers (16) through connectors.

6. The laser welding apparatus for LED light strip processing according to claim 1, characterized in that, The adsorption assembly includes a mounting bracket fixedly mounted on the base (1) and a second hydraulic push rod (32) fixedly connected to the surface of the fourth rotating block (43). A third electric telescopic rod (23) is fixedly mounted on the upper end and side of the mounting bracket. The third electric telescopic rod (23) is arranged parallel to the conveying housing (21), and a first suction cup (24) is fixedly connected to the telescopic end of the third electric telescopic rod (23). The adsorption end of the first suction cup (24) faces the heat shrink tube (22). A second suction cup (34) is fixedly mounted on the telescopic end of the second hydraulic push rod (32). The second suction cup (34) works in cooperation with the first suction cup (24).

7. The laser welding apparatus for LED light strip processing according to claim 1, characterized in that, Both the first mounting housing (27) and the second mounting housing (36) are equipped with drive components for driving the second rotating block (41), the third rotating block (42) and the fourth rotating block (43) to rotate. The drive components include a second motor (44) fixedly installed inside the first mounting housing (27) or the second mounting housing (36). A second gear (46) is fixedly connected to the output shaft of the second motor (44). A first gear (45) is fixedly connected to one end of the second rotating block (41), the third rotating block (42) and the fourth rotating block (43) located inside the mounting housing. The first gear (45) meshes with the second gear (46).

8. The laser welding apparatus for LED light strip processing according to claim 1, characterized in that, The hot pressing mechanism includes a first hydraulic push rod (31) fixedly mounted on the surface of the first mounting housing (27). The telescopic end of the first hydraulic push rod (31) is fixedly connected to an arc plate (26). The arc plate (26) has a hollow interior and air holes are evenly distributed on its upper surface. The base (1) is equipped with a hot air system connected to the interior of the arc plate (26). A fifth hydraulic push rod (39) is fixedly connected to the surface of the second mounting housing (36). The telescopic end of the fifth hydraulic push rod (39) is fixedly connected to a first motor (3). 8) A first rotating block (40) is fixedly installed at the output end of the first motor (38). A fourth hydraulic push rod (37) is fixedly installed on the surface of the first rotating block (40). An installation rod is fixedly installed at the telescopic end of the fourth hydraulic push rod (37). A second pressing roller (30) is rotatably installed on the side of the installation rod close to the outer surface of the arc plate (26). The second pressing roller (30) is a heating roller. The arc plate (26) and the second pressing roller (30) are both located on the rear side of the first U-shaped plate (25) and the second U-shaped plate (29).

9. The laser welding apparatus for LED light strip processing according to claim 8, characterized in that, The hot air system includes a hot air blower (6) fixedly installed on the base (1). The air outlet of the hot air blower (6) is connected to the inner cavity of the arc plate (26) through a hose. The hot air blown out by the hot air blower (6) enters the inner cavity of the arc plate (26) through the hose and is blown out through the air hole on the arc plate (26).

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