Welding device for surface mounting of flexible circuit board

Abstract

The utility model discloses a welding device for surface mounting of a flexible circuit board, which relates to the technical field of flexible circuit board processing and comprises a welding device body, a protective frame is mounted above the welding device body, a supporting table is mounted on the upper surface of the welding device body, a first servo motor is mounted in a built-in groove, and a second servo motor is mounted in the built-in groove. A welding table is installed on the transmission shaft, sliding grooves are formed in the front side and the rear side of the welding table, and positioning holes are formed in the sliding grooves in the front surface of the welding table during welding. The welding device for surface mounting of the flexible circuit board is provided with the welding tables, due to the design of the two welding tables and the 90-degree rotation function of the transmission shaft, welding operation and cooling operation can be conducted at the same time, and the utilization rate of the device is increased. The multiple positioning holes are formed at equal intervals, the sliding block assembly is in sliding connection with the sliding groove, the device can adapt to flexible circuit boards of different sizes, and the universality of the device is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of flexible circuit board processing technology, specifically to a welding device for surface mounting of flexible circuit boards. Background Technology

[0002] In today's rapidly developing electronic technology, flexible printed circuit boards (FPCs) have been widely used in various electronic devices due to their significant advantages such as flexibility, thinness, and small footprint. From portable consumer electronics such as smartphones and tablets to high-precision equipment in fields such as aerospace and medical devices, FPCs undertake critical electrical connection tasks and are an important foundation for realizing the miniaturization, lightweighting, and high integration of electronic devices.

[0003] In the manufacturing process of flexible circuit boards, surface mount technology (SMT) is a common process for achieving electrical connections between electronic components and flexible circuit boards. Soldering, as a core step, plays a decisive role in the quality and performance of the product.

[0004] For example, Chinese utility model patent application number 202220375576.6 discloses a welding device for processing flexible circuit boards. The device uses a motor to rotate a first rotating rod, which in turn rotates an exhaust fan to generate negative pressure. The heat generated during the welding process can be quickly dissipated through the second and first through holes, preventing damage to the circuit board due to high temperatures. Welding fumes can also enter the workbench through the second through hole, reducing the amount of fumes inhaled by workers. However, this device still has certain shortcomings.

[0005] After the flexible circuit board is soldered, if it is removed directly, the solder joints can be burned. If the solder joints are allowed to cool down before removal, the soldering efficiency will be greatly reduced.

[0006] Therefore, we propose a welding device for surface mounting of flexible circuit boards to solve the problems mentioned above. Utility Model Content

[0007] The purpose of this invention is to provide a welding device for surface mounting of flexible circuit boards, in order to solve the problem mentioned in the background art that if the flexible circuit board is removed directly after welding, it is easy to be burned by the solder joints during welding. If the solder joints are left to cool down before removal, the welding efficiency is greatly reduced.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a welding device for surface mounting of flexible circuit boards, comprising a welding device body, a protective frame installed above the welding device body, a movable soldering pen installed inside the top of the protective frame, a support platform installed on the upper surface of the welding device body, and an internal groove opened inside the support platform, a first servo motor installed inside the internal groove, and a transmission shaft installed above the first servo motor via an output shaft, a welding table installed on the transmission shaft, and two welding tables are provided, with sliding grooves opened on both the front and rear sides of the welding tables, and a positioning hole opened in the sliding groove on the front surface of the welding table during welding; slider assemblies are provided on both the left and right sides of the welding table, threaded rods are installed on the slider assemblies, and positioning blocks are installed below the threaded rods;

[0009] A positioning rod extends through one side of the slider assembly, and an anti-slip plate is installed at the end of the positioning rod away from the slider assembly. The anti-slip plate is connected to the slider assembly by a telescopic spring.

[0010] A connecting plate is installed on the inner right side of the protective frame, and a guide rod is installed on the connecting plate. A movable block is installed on the guide rod, and a fan assembly is installed below the movable block. A rectangular slot is opened on the upper surface of the movable block. A second servo motor is installed above the protective frame, and a connecting shaft is installed below the second servo motor via an output shaft. A turntable is installed at the lower end of the connecting shaft, and a movable rod is installed on the lower surface of the turntable.

[0011] Preferably, the welding table is located on the left and right sides of the drive shaft, which rotates 90° each time under the action of the first servo motor. The front surface of the support table is provided with an inspection door, which is provided with heat dissipation holes. The inspection door is located on the front surface of the first servo motor.

[0012] With the above structural design, the first servo motor is started, which drives the transmission shaft to rotate. The transmission shaft rotates 90° each time, so that the two welding stations are alternately positioned under the movable soldering pen. When the welding station is under the movable soldering pen, the movable soldering pen is operated to perform welding operations on the flexible circuit board. The heat dissipation holes on the inspection door are used for heat dissipation of the first servo motor.

[0013] Preferably, multiple positioning holes are equidistantly arranged, and the slider assembly is slidably connected to the slide groove.

[0014] With the above structural design, the slider assembly can move left and right along the slide groove when subjected to force, which facilitates the adjustment of the position of the slider assembly and is suitable for fixing flexible circuit boards of different lengths.

[0015] Preferably, the positioning block has a circular structure design, and the threaded rod is threadedly connected to the slider assembly.

[0016] With the above structural design, after the slider assembly position is adjusted and fixed, the threaded rod is rotated, and the threaded rod drives the positioning block below to move downward, fixing the flexible circuit board and preventing the flexible circuit board from shifting during surface mount soldering.

[0017] Preferably, the positioning rod is slidably connected to the slider assembly, and the positioning rod is located on one side of the positioning hole in the slide groove, and the positioning rod is engaged with the positioning hole.

[0018] With the above structural design, when moving the slider assembly, the anti-slip plate is pulled outward, and the anti-slip plate drives the positioning rod to move outward, away from the positioning hole. At this time, the telescopic spring is in a stretched state. Then, after moving the slider assembly to the desired position, the anti-slip plate is released. Under the action of the telescopic spring's rebound force, the anti-slip plate moves towards the positioning hole, driving the positioning rod to move and engage with the positioning hole, thereby completing the fixation of the slider assembly.

[0019] Preferably, the movable block is slidably connected to the guide rod, and the connecting shaft is fixedly connected to the turntable.

[0020] With the above structural design, the movable block can move left and right along the guide rod when subjected to force, making the movable block more stable when moving left and right and preventing deviation.

[0021] Preferably, the movable rod engages with the rectangular slot on the movable block, and the movable rod is located at a non-center position on the turntable.

[0022] Using the above structural design, the second servo motor is activated, driving the connecting shaft to rotate, and the turntable at the lower end of the connecting shaft rotates accordingly. When the turntable rotates, the movable rod below pushes the movable block to slide left and right on the guide rod. The fan assembly installed below the movable block moves left and right with the movable block, rapidly cooling the flexible circuit board that has been soldered on the soldering table, without affecting the soldering of other flexible circuit boards.

[0023] Compared with the prior art, the beneficial effects of this utility model are: the flexible circuit board surface mount welding device:

[0024] 1. Equipped with a fan assembly, through the cooperation of a second servo motor, connecting shaft, turntable, movable rod, and movable block, the fan assembly automatically and rapidly cools the solder joints of the welded flexible circuit board.

[0025] 2. Equipped with welding stations, the design of two welding stations and the 90° rotation function of the drive shaft allows welding and cooling operations to be performed simultaneously, improving the utilization rate of the equipment. Multiple positioning holes are set at equal intervals, and the slider assembly is slidably connected to the slide groove, which can adapt to flexible circuit boards of different sizes and enhance the versatility of the equipment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0027] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0028] Figure 3 This is a schematic diagram of the welding station structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the slider assembly structure of this utility model;

[0030] Figure 5 This utility model Figure 4 Enlarged structural diagram at point B;

[0031] Figure 6 This is a schematic diagram of the connection structure between the movable rod and the rectangular slot of this utility model.

[0032] In the diagram: 1. Welding device body; 2. Protective frame; 3. Movable welding pen; 4. Support platform; 5. Built-in groove; 6. First servo motor; 7. Drive shaft; 8. Welding table; 9. Slide groove; 10. Positioning hole; 11. Slider assembly; 12. Threaded rod; 13. Positioning block; 14. Positioning rod; 15. Anti-slip plate; 16. Telescopic spring; 17. Connecting plate; 18. Guide rod; 19. Movable block; 20. Fan assembly; 21. Rectangular groove; 22. Second servo motor; 23. Connecting shaft; 24. Turntable; 25. Movable rod. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figures 1-6This utility model provides a technical solution: a welding device for surface mounting of flexible circuit boards, comprising a welding device body 1, a protective frame 2, a movable soldering pen 3, a support platform 4, an internal groove 5, a first servo motor 6, a transmission shaft 7, a welding table 8, a slide 9, a positioning hole 10, a slider assembly 11, a threaded rod 12, a positioning block 13, a positioning rod 14, an anti-slip plate 15, a telescopic spring 16, a connecting plate 17, a guide rod 18, a movable block 19, a fan assembly 20, a rectangular groove 21, a second servo motor 22, a connecting shaft 23, a turntable 24, and a movable rod 25. The protective frame 2 is installed above the welding device body 1. Furthermore, a movable welding pen 3 is installed on the inner top of the protective frame 2, and a support platform 4 is installed on the upper surface of the welding device body 1. An internal groove 5 is provided inside the support platform 4, and a first servo motor 6 is installed inside the internal groove 5. A transmission shaft 7 is installed above the first servo motor 6 via an output shaft. A welding table 8 is installed on the transmission shaft 7, located on the left and right sides of the transmission shaft 7. The transmission shaft 7 rotates 90° each time under the action of the first servo motor 6. An inspection door with heat dissipation holes is provided on the front surface of the support platform 4. The inspection door is located on the front surface of the first servo motor 6. When the first servo motor 6 is started, the first... A servo motor 6 drives a drive shaft 7 to rotate. The drive shaft 7 rotates 90° each time, causing two welding stations 8 to alternately position below the movable soldering pen 3. When the welding station 8 is below the movable soldering pen 3, the movable soldering pen 3 is operated to perform welding operations on the flexible circuit board. The heat dissipation holes on the inspection door are used to dissipate heat from the first servo motor 4. There are two welding stations 8, and sliding grooves 9 are provided on both the front and rear sides of the welding station 8. During welding, positioning holes 10 are provided in the sliding grooves 9 on the front surface of the welding station 8. Multiple positioning holes 10 are evenly spaced. The slider assembly 11 is slidably connected to the sliding grooves 9. When force is applied, the slider assembly 11 can slide along the sliding grooves. 9 can be moved left and right to facilitate the adjustment of the position of the slider assembly 11, which is suitable for fixing flexible circuit boards of different lengths. Slider assemblies 11 are provided on both the left and right sides of the soldering station 8. A threaded rod 12 is installed on the slider assembly 11, and a positioning block 13 is installed below the threaded rod 12. The positioning block 13 has a circular structure design. The threaded rod 12 is threadedly connected to the slider assembly 11. After the position of the slider assembly 11 is adjusted and fixed, the threaded rod 12 is rotated, which drives the positioning block 13 below to move downward to fix the flexible circuit board and prevent the flexible circuit board from shifting during surface mount soldering.

[0035] A positioning rod 14 extends through one side of the slider assembly 11. The positioning rod 14 is slidably connected to the slider assembly 11 and is located on one side of the positioning hole 10 in the slide groove 9. The positioning rod 14 is engaged with the positioning hole 10. When the slider assembly 11 is moved, the anti-slip plate 15 is pulled outward. The anti-slip plate 15 drives the positioning rod 14 to move outward, away from the positioning hole 10. At this time, the telescopic spring 16 is in a stretched state. Then, after the slider assembly 11 is moved to the desired position, the anti-slip plate 15 is released. Under the action of the rebound force of the telescopic spring 16, the anti-slip plate 15 moves towards the positioning hole 10, driving the positioning rod 14 to move and engage with the positioning hole 10, thereby completing the fixation of the slider assembly 11. The anti-slip plate 15 is installed on the end of the positioning rod 14 away from the slider assembly 11. The anti-slip plate 15 and the slider assembly 11 are connected by the telescopic spring 16.

[0036] A connecting plate 17 is installed on the inner right side of the protective frame 2, and a guide rod 18 is installed on the connecting plate 17. A movable block 19 is installed on the guide rod 18, and the movable block 19 is slidably connected to the guide rod 18. The connecting shaft 23 is fixedly connected to the turntable 24. When subjected to force, the movable block 19 can move left and right along the guide rod 18, making the left and right movement of the movable block 19 more stable and preventing deviation. A fan assembly 20 is installed below the movable block 19, and a rectangular groove 21 is opened on the upper surface of the movable block 19. A second servo motor 22 is installed above the protective frame 2, and a connecting shaft 23 is installed below the second servo motor 22 through an output shaft. The lower end of the connecting shaft 23... A turntable 24 is installed, and a movable rod 25 is installed on the lower surface of the turntable 24. The movable rod 25 is engaged with the rectangular slot 21 on the movable block 19. The movable rod 25 is located at a non-center position on the turntable 24. The second servo motor 22 is started, which drives the connecting shaft 23 to rotate. The turntable 24 at the lower end of the connecting shaft 23 rotates accordingly. When the turntable 24 rotates, the movable rod 25 below pushes the movable block 19 to slide left and right on the guide rod 18. The fan assembly 20 installed below the movable block 19 moves left and right with the movable block 19 to quickly cool the flexible circuit board that has been soldered on the soldering station 8, without affecting the soldering of other flexible circuit boards.

[0037] Working principle: When using this flexible circuit board surface mount welding device, firstly, place the flexible circuit board on the welding table 8, pull the anti-slip plate 15 outward, the anti-slip plate 15 drives the positioning rod 14 to move outward, away from the positioning hole 10. At this time, the telescopic spring 16 is in a stretched state. Then, move the slider assembly 11 to the required position, release the anti-slip plate 15, the anti-slip plate 15 moves towards the positioning hole 10 under the action of the telescopic spring 16, driving the positioning rod 14 to move and engage with the positioning hole 10, thereby completing the fixation of the slider assembly 11. After the slider assembly 11 is adjusted and fixed, rotate the threaded rod 12, the threaded rod 12 drives the positioning block 13 below to move downward, fix the flexible circuit board, and prevent the flexible circuit board from shifting during surface mount welding.

[0038] Start the first servo motor 6, which drives the transmission shaft 7 to rotate. The transmission shaft 7 rotates 90° each time, so that the two soldering stations 8 are alternately positioned under the movable soldering pen 3. When the soldering station 8 is under the movable soldering pen 3, operate the movable soldering pen 3 to perform soldering operation on the flexible circuit board.

[0039] After welding is completed, the two welding tables 8 are rotated alternately, and the second servo motor 22 is started. The second servo motor 22 drives the connecting shaft 23 to rotate, and the turntable 24 at the lower end of the connecting shaft 23 rotates accordingly. When the turntable 24 rotates, the movable rod 25 below pushes the movable block 19 to slide left and right on the guide rod 18. The fan assembly 20 installed below the movable block 19 moves left and right with the movable block 19, quickly cooling the flexible circuit board that has been welded on the welding table 8, without affecting the welding of other flexible circuit boards, thus completing a series of tasks. Content not described in detail in this specification belongs to prior art known to those skilled in the art.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 welding apparatus for surface mounting of flexible circuit boards, comprising a welding apparatus body (1), characterized in that: A protective frame (2) is installed above the welding device body (1), and a movable welding pen (3) is installed on the top of the inner side of the protective frame (2). A support platform (4) is installed on the upper surface of the welding device body (1), and an internal groove (5) is opened inside the support platform (4). A first servo motor (6) is installed inside the internal groove (5), and a transmission shaft (7) is installed above the first servo motor (6) through an output shaft. A welding table (8) is installed on the transmission shaft (7), and there are two welding tables (8). Slide grooves (9) are opened on both the front and rear sides of the welding table (8). A positioning hole (10) is opened in the slide groove (9) on the front surface of the welding table (8) during welding. A slider assembly (11) is set on both the left and right sides of the welding table (8). A threaded rod (12) is installed on the slider assembly (11), and a positioning block (13) is installed below the threaded rod (12). A positioning rod (14) passes through one side of the slider assembly (11), and an anti-slip plate (15) is installed at the end of the positioning rod (14) away from the slider assembly (11). The anti-slip plate (15) is connected to the slider assembly (11) by a telescopic spring (16). A connecting plate (17) is installed on the inner right side of the protective frame (2), and a guide rod (18) is installed on the connecting plate (17). A movable block (19) is installed on the guide rod (18), and a fan assembly (20) is installed below the movable block (19). A rectangular groove (21) is opened on the upper surface of the movable block (19). A second servo motor (22) is installed above the protective frame (2), and a connecting shaft (23) is installed below the second servo motor (22) through an output shaft. A turntable (24) is installed at the lower end of the connecting shaft (23), and a movable rod (25) is installed on the lower surface of the turntable (24).

2. The welding apparatus for surface mounting of flexible circuit boards according to claim 1, characterized in that: The welding table (8) is located on the left and right sides of the drive shaft (7). The drive shaft (7) rotates 90° each time under the action of the first servo motor (6). The front surface of the support table (4) is provided with an inspection door, which is provided with heat dissipation holes. The inspection door is located on the front surface of the first servo motor (6).

3. The welding apparatus for surface mounting of flexible circuit boards according to claim 1, characterized in that: The positioning holes (10) are arranged in multiple equidistant positions, and the slider assembly (11) is slidably connected to the slide groove (9).

4. The welding apparatus for surface mounting of flexible circuit boards according to claim 1, characterized in that: The positioning block (13) has a circular structure design, and the threaded rod (12) is threadedly connected to the slider assembly (11).

5. The welding apparatus for surface mounting of flexible circuit boards according to claim 1, characterized in that: The positioning rod (14) is slidably connected to the slider assembly (11), and the positioning rod (14) is located on one side of the positioning hole (10) in the slide groove (9), and the positioning rod (14) is engaged with the positioning hole (10).

6. The welding apparatus for surface mounting of flexible circuit boards according to claim 1, characterized in that: The movable block (19) is slidably connected to the guide rod (18), and the connecting shaft (23) is fixedly connected to the turntable (24).

7. The welding apparatus for surface mounting of flexible circuit boards according to claim 6, characterized in that: The movable rod (25) engages with the rectangular groove (21) on the movable block (19), and the movable rod (25) is located at a non-center position on the turntable (24).

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