Laser welding equipment for flexible circuit board

Abstract

The invention belongs to the technical field of flexible circuit boards, and particularly relates to flexible circuit board laser welding equipment which comprises a welding table, two first guide rods are slidably connected to one side of the upper end of the welding table, a first guide rail plate is fixedly connected to the upper ends of the first guide rods, and a second sliding block is slidably connected to one side of the first guide rail plate. A third air cylinder is fixedly connected to one side of the second sliding block, a laser welding head is fixedly connected to the piston end of the third air cylinder, and a circuit board positioning assembly is further arranged on the welding table. The circuit board positioning assembly comprises a plurality of second guide rods connected with one side of the welding table in a sliding mode. By means of the circuit board positioning assembly and the wire harness pitch changing assembly, accurate butt joint of the ends of the multiple wire harnesses and the multiple bonding pads is achieved, the manual butt joint process of operators is omitted, labor is saved, meanwhile, the situation of butt joint deviation caused by misoperation of the operators is avoided, and the welding quality is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of flexible circuit board technology, specifically a laser welding device for flexible circuit boards. Background Technology

[0002] Flexible circuit boards (PCBs) are printed circuit boards made with polyimide or polyester film as the substrate. They feature high reliability, excellent flexibility, high wiring density, light weight, thinness, and good bendability. During manufacturing, laser welding is often used to connect the wire harness ends to their pads.

[0003] Patent CN213646251U discloses a flexible circuit board welding device, including a frame. A welding pen is fixedly connected to the center of one inner wall of the frame. The frame includes a mounting plate located inside one side of the frame. Fixing plates are fixedly installed on the top of the mounting plate near both sides. Telescopic bases are fixedly connected to the center of the top of each fixing plate. Telescopic plates are movably connected inside each telescopic base. A crank handle is fixedly connected to one side of each telescopic plate, and a rotating shaft is fixedly connected to the other side of the telescopic plate away from the crank handle. A clamping claw is fixedly connected to the other side of the rotating shaft. This flexible circuit board welding device, by setting the connection between the clamping claw, the rotating shaft, and the crank handle, allows the crank handle to be adjusted to the desired angle during welding, thus achieving the effect of easy angle adjustment and making it more convenient and faster to use.

[0004] However, the above technical solutions still have the following shortcomings in practical applications: In some cases, multiple pads on a flexible circuit board are arranged at equal intervals. Simultaneously, multiple wire harnesses to be soldered have one end integrated into a single connector, and these wire harnesses are also arranged at equal intervals. During soldering, the operator must simultaneously hold multiple wire harnesses and align their ends one by one with the corresponding pads before soldering can begin. This process is not only laborious but also highly susceptible to misalignment, leading to inaccurate soldering between the wire harness ends and the pads, ultimately affecting the soldering quality. Summary of the Invention

[0005] To overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a laser welding device for flexible circuit boards.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a laser welding equipment for flexible circuit boards, including a welding table, two guide rods are slidably connected to one side of the upper end of the welding table, a guide rail plate is fixedly connected to the upper end of the guide rods, a slider is slidably connected to one side of the guide rail plate, a cylinder is fixedly connected to one side of the slider, a laser welding head is fixedly connected to the piston end of the cylinder, and a circuit board positioning assembly is also provided on the welding table. The circuit board positioning assembly includes multiple guide rods 2 that are slidably connected to one side of the welding table. A guide rail plate 2 is fixedly connected to the upper end of the guide rods 2. A guide rail plate 3 is slidably connected to one side of the guide rail plate 2. A positioning seat is slidably connected to one side of the upper end face of the guide rail plate 3. Positioning blocks are fixedly and slidably connected to both sides of the upper end face of the positioning seat, respectively. The welding table is also equipped with a wire harness pitch-changing assembly; The wire harness pitch-changing assembly includes a bracket fixedly connected to one side of the upper surface of the welding platform. A slider is slidably connected to one side of the bracket, and a cylinder is fixedly connected to one side of the slider. A sliding plate is fixedly connected to the piston end of the cylinder. Multiple sliders are equidistantly distributed laterally in the sliding groove of the sliding plate, with the foremost slider fixedly connected to the sliding groove of the sliding plate, and the remaining sliders slidably connected to the sliding groove of the sliding plate. An adjusting block is fixedly connected to one end of each slider, and fitting blocks are slidably connected to both sides of the sliding groove of the adjusting block.

[0007] Preferably, a cylinder four is fixedly connected to one side of the welding table, the piston end of the cylinder four is fixedly connected to one side of the guide rail plate, and a cylinder two is fixedly connected to one side of the guide rail plate, the piston end of the cylinder two is fixedly connected to one side of the slider two.

[0008] Preferably, the welding table is further provided with a terminal block positioning assembly; The terminal positioning assembly includes a bracket two fixedly connected to one side of the upper surface of the welding platform. Two clamping blocks are slidably connected to the upper groove of the bracket two, and bidirectional threaded rods are rotatably provided at both ends of the inner side of the groove. The two sides of the bidirectional threaded rods are respectively threadedly connected to the clamping blocks on both sides. A motor two is fixedly connected to one side of the upper end of the bracket two, and the output end of the motor two is fixedly connected to one end of the bidirectional threaded rod.

[0009] Preferably, a threaded rod is threadedly connected to one side of the slider, and both ends of the threaded rod are rotatably mounted on the bracket. A motor is fixedly connected to one end of the bracket, and the output end of the motor is fixedly connected to one end of the threaded rod.

[0010] Preferably, a sloping groove plate is slidably connected to one side of the slide plate, and the sloping groove plate is provided with multiple sloping grooves at different angles. A guide post is fixedly connected to one end of the slider three, and each guide post passes through and is slidably connected to a sloping groove. A threaded rod two is threadedly connected to one end of the sloping groove plate, and both ends of the threaded rod two are rotatably mounted on the slide plate. A motor three is fixedly connected to one side of the slide plate, and the output end of the motor three is fixedly connected to one end of the threaded rod two.

[0011] Preferably, a motor five is fixedly connected to one side of the adjusting block, and threaded rods three are fixedly connected to the output ends of both sides of the motor five. Both ends of the threaded rods three are rotatably mounted on the adjusting block, and the threaded rods three are threadedly connected to one side of the contact block.

[0012] Preferably, a cylinder five is fixedly connected to one side of the welding table, and the piston end of the cylinder five is fixedly connected to one side of the bottom of the guide rail plate two. A cylinder six is ​​fixedly connected to one side of the guide rail plate two, and the piston end of the cylinder six is ​​fixedly connected to one end of the guide rail plate three.

[0013] Preferably, a threaded rod four is threadedly connected to one side of the positioning seat, and both ends of the threaded rod four are rotatably mounted on the guide rail plate three. A motor six is ​​fixedly connected to one end of the guide rail plate three, and the output end of the motor six is ​​fixedly connected to one end of the threaded rod four. A cylinder seven is fixedly connected to one side of the positioning seat, and the piston end of the cylinder seven is fixedly connected to one side of the positioning block.

[0014] Preferably, an electric push rod is fixedly connected to one side of the positioning block, and a pressure block is fixedly connected to the piston end of the electric push rod.

[0015] Preferably, it also includes a wire straightening auxiliary component; The straightening auxiliary component includes limiting rods rotatably mounted on both sides of the upper end of the bonding block. Motor 4 is fixedly connected to both sides of the bottom of the bonding block, and the output end of motor 4 is fixedly connected to one end of the limiting rod.

[0016] The beneficial effects of this invention are as follows: 1. The laser welding equipment for flexible circuit boards described in this invention utilizes a circuit board positioning component and a wire harness pitch-changing component to achieve precise docking of the ends of multiple wire harnesses with multiple solder pads, eliminating the need for manual docking by operators, thus saving labor. At the same time, it also avoids docking deviations due to human error, ensuring welding quality.

[0017] 2. The laser welding equipment for flexible circuit boards described in this invention, through a wire straightening auxiliary component, can straighten and align bent wire bundles before docking by utilizing the cooperation of a limiting rod and a bonding block, ensuring that the ends of multiple wire bundles reach the same height. This ensures that multiple bonding blocks can simultaneously clamp the ends of the wire bundles, providing a guarantee for the precise docking of the subsequent wire bundles with the solder pads. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the support frame at two locations; Figure 3 This is a schematic diagram of the three-dimensional structure at the clamping block; Figure 4 This is a schematic diagram of the three-dimensional structure of the slide plate; Figure 5 yes Figure 4 Enlarged view of a portion of point A in the middle; Figure 6 This is a schematic diagram of the three-dimensional structure of the bonding block; Figure 7 This is a three-dimensional structural schematic diagram of the present invention from another perspective; Figure 8 This is a schematic diagram of a three-dimensional structure of the support frame; Figure 9 This is a schematic diagram of the three-dimensional structure of the guide rail plate; Figure 10 This is a schematic diagram of the three-dimensional structure of two parts of the guide rail plate; Figure 11 This is a schematic diagram of the three-dimensional structure of the positioning seat.

[0020] In the diagram: 1. Welding table; 2. Support 1; 3. Support 2; 4. Cylinder 1; 5. Guide rail plate 1; 6. Guide rod 1; 7. Cylinder 2; 8. Guide rail plate 2; 9. Guide rail plate 3; 10. Clamping block; 11. Sliding plate; 12. Motor 1; 13. Slider 1; 14. Threaded rod 1; 15. Slider 2; 16. Cylinder 3; 17. Laser welding head; 18. Cylinder 4; 19. Cylinder 5; 20. Guide rod 2; 21. Slider 3; 22. Motor 2; 23. Bidirectional threaded rod; 24. Cylinder 6; 25. Guide column; 26. Inclined slot plate; 27. Motor 3; 28. Threaded rod 2; 29. ​​Adjusting block; 30. Motor 4; 31. Limiting rod; 32. Motor 5; 33. Threaded rod 3; 34. Cylinder 7; 35. Positioning seat; 36. Threaded rod 4; 37. Motor 6; 38. Positioning block; 39. Pressing block; 40. Electric push rod; 41. Adhesive block. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only 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.

[0022] Please refer to Figures 1-11 The present invention provides a technical solution: a laser welding device for flexible circuit boards, including a welding table 1, two guide rods 6 are slidably connected to one side of the upper end of the welding table 1, a guide rail plate 5 is fixedly connected to the upper end of the guide rods 6, a slider 15 is slidably connected to one side of the guide rail plate 5, a cylinder 16 is fixedly connected to one side of the slider 15, a laser welding head 17 is fixedly connected to the piston end of the cylinder 16, and a circuit board positioning assembly is also provided on the welding table 1. The circuit board positioning assembly includes multiple guide rods 20 that are slidably connected to one side of the welding table 1. A guide rail plate 8 is fixedly connected to the upper end of the guide rods 20. A guide rail plate 9 is slidably connected to one side of the guide rail plate 28. A positioning seat 35 is slidably connected to one side of the upper surface of the guide rail plate 39. Positioning blocks 38 are fixedly and slidably connected to both sides of the upper surface of the positioning seat 35. The welding station 1 is also equipped with a wire harness pitch converter; The wire harness pitch-changing assembly includes a bracket 2 fixedly connected to one side of the upper surface of the welding table 1. A slider 13 is slidably connected to one side of the bracket 2. A cylinder 4 is fixedly connected to one side of the slider 13. A slide plate 11 is fixedly connected to the piston end of the cylinder 4. Multiple sliders 21 are equidistantly distributed laterally in the slide groove of the slide plate 11. The foremost slider 21 is fixedly connected to the slide groove of the slide plate 11, and the remaining sliders 21 are slidably connected to the slide groove of the slide plate 11. An adjusting block 29 is fixedly connected to one end of the slider 21. Adhesive blocks 41 are slidably connected to both sides of the slide groove of the adjusting block 29.

[0023] In this embodiment, as Figures 2-5 , Figures 7-11 As shown, a cylinder 4 18 is fixedly connected to one side of the welding table 1. The piston end of the cylinder 4 18 is fixedly connected to one side of the guide rail plate 1 5. A cylinder 2 7 is fixedly connected to one side of the guide rail plate 1 5. The piston end of the cylinder 2 7 is fixedly connected to one side of the slider 2 15.

[0024] The welding station 1 is also equipped with a terminal block positioning assembly; The terminal block positioning assembly includes a bracket 2 3 fixedly connected to one side of the upper surface of the welding table 1. Two clamping blocks 10 are slidably connected to the upper slide groove of the bracket 2 3, and a bidirectional threaded rod 23 is rotatably provided at both ends of the inner side of the slide groove. The two sides of the bidirectional threaded rod 23 are threadedly connected to the clamping blocks 10 on both sides respectively. A motor 22 is fixedly connected to one side of the upper end of the bracket 2 3, and the output end of the motor 22 is fixedly connected to one end of the bidirectional threaded rod 23.

[0025] A threaded rod 14 is threadedly connected to one side of slider 13. Both ends of the threaded rod 14 are rotatably mounted on bracket 2. A motor 12 is fixedly connected to one end of bracket 2. The output end of motor 12 is fixedly connected to one end of threaded rod 14.

[0026] A slidable groove plate 26 is slidably connected to one side of the slide plate 11. The slid groove plate 26 is provided with multiple slid grooves at different angles. A guide post 25 is fixedly connected to one end of the slider 3 21, and each guide post 25 passes through and is slidably connected to a slid groove. A threaded rod 28 is threadedly connected to one end of the slid groove plate 26. Both ends of the threaded rod 28 are rotatably set on the slide plate 11. A motor 3 27 is fixedly connected to one side of the slide plate 11. The output end of the motor 3 27 is fixedly connected to one end of the threaded rod 28.

[0027] A motor 32 is fixedly connected to one side of the adjusting block 29. Threaded rods 33 are fixedly connected to the output ends of both sides of the motor 32. Both ends of the threaded rods 33 are rotatably mounted on the adjusting block 29. The threaded rods 33 are threadedly connected to one side of the mating block 41.

[0028] A cylinder 19 is fixedly connected to one side of the welding table 1. The piston end of the cylinder 19 is fixedly connected to one side of the bottom of the guide plate 2 8. A cylinder 24 is fixedly connected to one side of the guide plate 2 8. The piston end of the cylinder 24 is fixedly connected to one end of the guide plate 3 9.

[0029] A threaded rod 36 is threadedly connected to one side of the positioning seat 35. Both ends of the threaded rod 36 are rotatably mounted on the guide rail plate 39. A motor 37 is fixedly connected to one end of the guide rail plate 39. The output end of the motor 37 is fixedly connected to one end of the threaded rod 36. A cylinder 34 is fixedly connected to one side of the positioning seat 35. The piston end of the cylinder 34 is fixedly connected to one side of the positioning block 38.

[0030] An electric actuator 40 is fixedly connected to one side of the positioning block 38, and a pressure block 39 is fixedly connected to the piston end of the electric actuator 40.

[0031] Specifically, in existing technologies, in some cases, multiple pads on a flexible circuit board are arranged at equal intervals. Simultaneously, one end of multiple wire harnesses to be soldered is integrated into a single connector, and these wire harnesses are also arranged at equal intervals. During soldering, the operator must simultaneously hold multiple wire harnesses and align their ends one by one with the corresponding pads before soldering can begin. This process is not only laborious but also highly susceptible to misalignment, leading to inaccurate soldering between the wire harness ends and the pads, ultimately affecting the soldering quality.

[0032] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows: First, one edge of the flexible circuit board is attached to the positioning block 38 on one side. Then, according to the length of the flexible circuit board, the cylinder 34 is used to drive the positioning block 38 on the other side to slide on the positioning seat 35, so that the positioning block 38 on the other side is also attached to the edge of the flexible circuit board. Then, the electric push rods 40 on both sides are activated, and the electric push rods 40 are used to drive the pressure block 39 to move. The pressure block 39 presses both sides of the flexible circuit board onto the positioning block 38, thus achieving the positioning of the flexible circuit board.

[0033] Then place the wire harness connector between the two clamps 10, with the wire harness hanging naturally. When the wire harness connector is placed between the two clamps 10, make a slight adjustment to the position of the connector so that the frontmost wire harness is aligned between the two frontmost mating blocks 41. Since multiple wire harnesses are equidistantly arranged on the connector, the screw rod 28 can be rotated by motor 27, causing the inclined plate 26 to slide on the slide plate 11. With the cooperation of the inclined groove and guide post 25, multiple sliders 21 can slide simultaneously, adjusting the spacing of adjacent adjustment blocks 29 to match the wire harness spacing. Multiple wire harnesses can then be aligned with different adjustment blocks 29. Then, cylinder 4 drives the slide plate 11 to move laterally, embedding the wire harness between two mating blocks 41. Based on the height of the wire harness end, motor 12 drives the screw rod 14 to rotate, causing the slider 13 to slide upwards, positioning the mating block 41 at the wire harness end. Simultaneously, multiple motors 32 are activated, rotating the screw rods 33 on both sides, bringing the two mating blocks 41 on the same adjustment block 29 closer together, clamping the wire harness. Subsequently, based on the spacing of the pads on the flexible circuit board, the spacing of adjacent adjustment blocks 29 is adjusted again to match the spacing of adjacent pads. Then, cylinder 519 drives guide rail plate 28 to rise and fall, cylinder 624 drives guide rail plate 39 to slide on guide rail plate 28, and motor 637 drives threaded rod 436 to rotate, driving positioning seat 35 to slide on guide rail plate 39. This allows the flexible circuit board to be adjusted in the x, y, and z axes, aligning the foremost pad with the foremost wire harness end, and similarly aligning the remaining pads with the wire harness ends. At this point, cylinders 418, 27, and 316 move the laser welding head 17, adjusting its position in the x, y, and z axes to align it with the connection point between the wire harness end and the pad. Then, the laser welding head 17 is activated to begin welding. This achieves precise docking of multiple wire harness ends with multiple pads, eliminating the need for manual docking by operators, saving effort, and preventing docking deviations due to human error, thus ensuring welding quality. Furthermore, the entire docking process was combined with visual positioning technology, which further ensured the accuracy of the docking. Visual positioning technology is an existing technology and will not be elaborated on here.

[0034] In this embodiment, as Figure 6 As shown, it also includes a wire straightening auxiliary component; The cable straightening auxiliary component includes a limiting rod 31 rotatably mounted on both sides of the upper end of the bonding block 41, and a motor 30 fixedly connected to both sides of the bottom of the bonding block 41. The output end of the motor 30 is fixedly connected to one end of the limiting rod 31.

[0035] Specifically, in the above embodiments, although multiple bonding blocks 41 can be used to simultaneously fix multiple wire harness ends, this process requires multiple wire harnesses to remain vertically hanging at the same time so that multiple bonding blocks 41 can be aligned with different wire harnesses simultaneously. However, in some cases, the wire harnesses may be bent due to compression during storage, resulting in different heights at the ends of multiple wire harnesses, making it impossible for the bonding blocks 41 to be aligned with the ends of the wire harnesses simultaneously, thus affecting the smooth progress of the docking operation.

[0036] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows: When the spacing between adjacent adjusting blocks 29 is the same as the spacing between adjacent wire harnesses, first adjust the height of multiple adjusting blocks 29 so that the adjusting blocks 29 are aligned with the connection point between the wire harness and the wire harness connector. Even if the wire harness is bent, the connection point between the wire harness and the connector will remain in its original position. Then, drive the adjusting blocks 29 closer to the wire harness so that the wire harness is embedded between the two fitting blocks 41. Then drive the fitting blocks 41 to fit against the wire harness, but do not clamp the wire harness. Subsequently, the two motors 30 on the fitting blocks 41 start simultaneously and drive the two limiting rods 31 to rotate, so that the limiting rods 31 fit against the surface of the wire harness. At this time, the wire harness is limited around its perimeter. Then drive the adjusting blocks 29 to descend. During the descent of the adjusting blocks 29, the bent wire harness will be straightened under the limitation of the limiting rods 31 and the fitting blocks 41 until the adjusting blocks 29 reach the end of the wire harness. Then, use the fitting blocks 41 to clamp the end of the wire harness. Then repeat the welding operation in the above embodiment. This avoids the situation where multiple wire harness ends are at different heights due to wire harness bending, and the mating block 41 cannot be aligned with the wire harness ends at the same time, thus affecting the smooth progress of the docking work.

[0037] Working principle: First, one edge of the flexible circuit board is aligned with one of the positioning blocks 38. Then, based on the length of the flexible circuit board, cylinder 7 34 drives the other positioning block 38 to slide on the positioning seat 35, so that the other positioning block 38 is also aligned with the edge of the flexible circuit board. Next, the electric push rods 40 on both sides are activated, which move the pressure block 39. The pressure block 39 presses both sides of the flexible circuit board onto the positioning blocks 38, thus achieving the positioning of the flexible circuit board. Then, the wire harness connector is placed between the two clamping blocks 10, with the wire harness hanging naturally. When the wire harness connector is placed between the two clamping blocks 10, the position of the connector is finely adjusted so that the foremost wire harness is aligned between the two foremost bonding blocks 41. Since multiple wire harnesses are equidistantly arranged on the connector, the screw rod 28 can be rotated by motor 27, causing the inclined plate 26 to slide on the slide plate 11. With the cooperation of the inclined groove and guide post 25, multiple sliders 21 can slide simultaneously, adjusting the spacing of adjacent adjustment blocks 29 to match the wire harness spacing. Multiple wire harnesses can then be aligned with different adjustment blocks 29. Then, cylinder 4 drives the slide plate 11 to move laterally, embedding the wire harness between two mating blocks 41. Based on the height of the wire harness end, motor 12 drives the screw rod 14 to rotate, causing the slider 13 to slide upwards, positioning the mating block 41 at the wire harness end. Simultaneously, multiple motors 32 are activated, rotating the screw rods 33 on both sides, bringing the two mating blocks 41 on the same adjustment block 29 closer together, clamping the wire harness. Subsequently, based on the spacing of the pads on the flexible circuit board, the spacing of adjacent adjustment blocks 29 is adjusted again to match the spacing of adjacent pads. Then, cylinder 519 drives guide rail plate 28 to rise and fall, cylinder 624 drives guide rail plate 39 to slide on guide rail plate 28, and motor 637 drives threaded rod 436 to rotate, driving positioning seat 35 to slide on guide rail plate 39. This allows the flexible circuit board to be adjusted in the x, y, and z axes, aligning the foremost pad with the foremost wire harness end, and similarly aligning the remaining pads with the wire harness end. At this point, cylinders 418, 27, and 316 move the laser welding head 17, adjusting its position in the x, y, and z axes to align it with the connection point between the wire harness end and the pad. Then, the laser welding head 17 is activated to begin welding. When the spacing between adjacent adjusting blocks 29 is the same as the spacing between adjacent wire harnesses, first adjust the height of multiple adjusting blocks 29 so that the adjusting blocks 29 are aligned with the connection between the wire harness and the wire harness connector. Even if the wire harness is bent, the connection between the wire harness and the connector will remain in its original position. Then drive the adjusting blocks 29 closer to the wire harness so that the wire harness is embedded between the two mating blocks 41. Then drive the mating blocks 41 to mat with the wire harness, but do not clamp the wire harness.Subsequently, the two motors 30 on the bonding block 41 start simultaneously and drive the two limiting rods 31 to rotate, so that the limiting rods 31 are in contact with the surface of the wire harness. At this time, the wire harness is limited around its perimeter. Then, the adjusting block 29 is driven to descend. During the descent of the adjusting block 29, the bent wire harness will be straightened under the limitation of the limiting rods 31 and the bonding block 41 until the adjusting block 29 reaches the end of the wire harness. Then, the bonding block 41 is used to clamp the end of the wire harness, and the welding operation in the above embodiment is repeated.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding device for flexible circuit boards, comprising a welding table (1), characterized in that: Two guide rods (6) are slidably connected to one side of the upper end of the welding table (1). A guide rail plate (5) is fixedly connected to the upper end of the guide rod (6). A slider (15) is slidably connected to one side of the guide rail plate (5). A cylinder (16) is fixedly connected to one side of the slider (15). A laser welding head (17) is fixedly connected to the piston end of the cylinder (16). A circuit board positioning assembly is also provided on the welding table (1). The circuit board positioning assembly includes multiple guide rods (20) that are slidably connected to one side of the welding table (1). A guide rail plate (8) is fixedly connected to the upper end of the guide rod (20). A guide rail plate (9) is slidably connected to one side of the guide rail plate (8). A positioning seat (35) is slidably connected to one side of the upper surface of the guide rail plate (9). Positioning blocks (38) are fixedly and slidably connected to both sides of the upper surface of the positioning seat (35). The welding table (1) is also equipped with a wire harness pitch-changing assembly; The wire harness pitch-changing assembly includes a bracket (2) fixedly connected to one side of the upper surface of the welding table (1). A slider (13) is slidably connected to one side of the bracket (2). A cylinder (4) is fixedly connected to one side of the slider (13). A sliding plate (11) is fixedly connected to the piston end of the cylinder (4). Multiple sliders (21) are equidistantly distributed in the sliding groove of the sliding plate (11). The foremost slider (21) is fixedly connected to the sliding groove of the sliding plate (11), and the remaining sliders (21) are slidably connected to the sliding groove of the sliding plate (11). An adjusting block (29) is fixedly connected to one end of the slider (21). A fitting block (41) is slidably connected to both sides of the sliding groove of the adjusting block (29).

2. The laser welding equipment for flexible circuit boards according to claim 1, characterized in that: A cylinder four (18) is fixedly connected to one side of the welding table (1). The piston end of the cylinder four (18) is fixedly connected to one side of the guide rail plate (5). A cylinder two (7) is fixedly connected to one side of the guide rail plate (5). The piston end of the cylinder two (7) is fixedly connected to one side of the slider two (15).

3. The laser welding equipment for flexible circuit boards according to claim 2, characterized in that: The welding table (1) is also equipped with a terminal block positioning assembly; The terminal positioning assembly includes a bracket two (3) fixedly connected to one side of the upper surface of the welding table (1). Two clamping blocks (10) are slidably connected at the upper end of the bracket two (3), and a bidirectional threaded rod (23) is rotatably provided at both ends of the inner side of the groove. The two sides of the bidirectional threaded rod (23) are threadedly connected to the clamping blocks (10) on both sides respectively. A motor two (22) is fixedly connected to one side of the upper end of the bracket two (3), and the output end of the motor two (22) is fixedly connected to one end of the bidirectional threaded rod (23).

4. The laser welding equipment for flexible circuit boards according to claim 1, characterized in that: The slider (13) is threadedly connected to a threaded rod (14) on one side. Both ends of the threaded rod (14) are rotatably mounted on the bracket (2). One end of the bracket (2) is fixedly connected to a motor (12). The output end of the motor (12) is fixedly connected to one end of the threaded rod (14).

5. The laser welding equipment for flexible circuit boards according to claim 1, characterized in that: The slide plate (11) is slidably connected to one side of the inclined plate (26). The inclined plate (26) is provided with multiple inclined grooves at different angles. The slider three (21) is fixedly connected to one end of the guide post (25). Each guide post (25) passes through an inclined groove and is slidably connected to it. The inclined plate (26) is threadedly connected to one end of the threaded rod two (28). Both ends of the threaded rod two (28) are rotatably set on the slide plate (11). The slide plate (11) is fixedly connected to one side of the motor three (27). The output end of the motor three (27) is fixedly connected to one end of the threaded rod two (28).

6. The laser welding equipment for flexible circuit boards according to claim 1, characterized in that: The adjusting block (29) is fixedly connected to a motor five (32) on one side. The output ends of the motor five (32) are fixedly connected to threaded rod three (33). Both ends of the threaded rod three (33) are rotatably set on the adjusting block (29). The threaded rod three (33) is threadedly connected to one side of the fitting block (41).

7. The laser welding equipment for flexible circuit boards according to claim 1, characterized in that: A cylinder five (19) is fixedly connected to one side of the welding table (1). The piston end of the cylinder five (19) is fixedly connected to one side of the bottom of the guide rail plate two (8). A cylinder six (24) is fixedly connected to one side of the guide rail plate two (8). The piston end of the cylinder six (24) is fixedly connected to one end of the guide rail plate three (9).

8. The laser welding equipment for flexible circuit boards according to claim 1, characterized in that: The positioning seat (35) is threadedly connected to a threaded rod four (36) on one side. Both ends of the threaded rod four (36) are rotatably mounted on the guide rail plate three (9). One end of the guide rail plate three (9) is fixedly connected to a motor six (37). The output end of the motor six (37) is fixedly connected to one end of the threaded rod four (36). One side of the positioning seat (35) is fixedly connected to a cylinder seven (34). The piston end of the cylinder seven (34) is fixedly connected to one side of the positioning block (38).

9. The laser welding equipment for flexible circuit boards according to claim 8, characterized in that: An electric push rod (40) is fixedly connected to one side of the positioning block (38), and a pressure block (39) is fixedly connected to the piston end of the electric push rod (40).

10. The laser welding equipment for flexible circuit boards according to claim 1, characterized in that: It also includes cable straightening auxiliary components; The straightening auxiliary component includes a limiting rod (31) rotatably disposed on both sides of the upper end of the bonding block (41). A motor (30) is fixedly connected to both sides of the bottom of the bonding block (41). The output end of the motor (30) is fixedly connected to one end of the limiting rod (31).

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