Traffic signal LED lamp plate welding clamping system and method

Abstract

The application discloses a traffic signal lamp LED lamp plate welding clamping system and method, and belongs to the technical field of welding equipment, which comprises a support frame, an L-shaped vertical plate is installed on the support frame, and further comprises a rectangular frame installed on the L-shaped vertical plate, a counterweight plate is connected in the rectangular frame, symmetrically arranged slide rails are internally rotationally connected with lead screws and are threadedly connected with nut seats, a pressing plate is rotationally connected between the two nut seats, support arms are rotationally connected between the two sides of the pressing plate and the rectangular frame, a supporting plate is installed on the rectangular frame, the supporting plate and the nut seat are transmissionally connected through a driving part, under the driving of a first motor, when the nut seat moves, the pressing plate rotates under the pushing of the support arm, meanwhile, the moving nut seat drives the rack on the supporting plate to move reversely through a rack, then, the supporting plate is pushed out, when the output end of the first motor reversely rotates, the pushed-out supporting plate is reset, meanwhile, the rotating pressing plate covers the supporting plate again, and the lamp plate is fixed in the supporting plate.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a welding clamping system and method for LED light panels of traffic signals. Background Technology

[0002] Traffic lights are signals that direct traffic flow and generally consist of red, green, and yellow lights. A red light indicates that passage is prohibited. Traffic lights can be categorized into motor vehicle traffic lights, non-motor vehicle traffic lights, pedestrian crossing traffic lights, directional indicator lights (arrow lights), lane traffic lights, flashing warning lights, and level crossing traffic lights, etc. The light-emitting panels of traffic lights are made by densely arranging numerous LED light-emitting tubes on a printed circuit board.

[0003] Since each LED needs to be soldered onto a printed circuit board, the soldered LED board needs to be transferred to the next process for inspection after soldering. However, if the inspection fails, it needs to be re-clamped and soldered, which makes the process troublesome and reduces production efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the problem in the prior art that welded LED light panels need to be transferred to the next process for inspection, but if the inspection fails, they need to be re-clamped and welded, which leads to complicated processes and reduced production efficiency. Therefore, this invention proposes a welding clamping system and method for traffic signal LED light panels.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A welding and clamping system for traffic signal LED light panels includes a support frame on which an L-shaped upright plate is rotatably mounted via a rotating shaft. The system further includes: a rectangular frame slidably mounted on the L-shaped upright plate, with a counterweight plate slidably connected between the inner sidewalls of the rectangular frame's groove; two symmetrically arranged slide rails, each slide rail having a lead screw rotatably connected inside, a nut seat threaded onto the lead screw, a pressure plate rotatably connected between the two nut seats, and support arms rotatably connected between the two sides of the pressure plate and the rectangular frame; a support plate slidably mounted on the rectangular frame, the support plate being driven by a drive unit to the nut seat; and a first motor fixedly mounted on the rectangular frame, the output end of the first motor being connected to the lead screws on both sides via a belt drive.

[0007] In order to place the printed circuit board on the tray, preferably, the driving part includes: a driving gear rotatably installed in the side wall of the slide rail, with racks meshing on both sides of the driving gear, one side of the rack being located in the slide rail and fixedly connected to the nut seat, and the other side of the rack being fixedly connected to the tray.

[0008] To expose both sides of the printed circuit board, both the pressure plate and the support plate are provided with circular holes, and the cross-section of the circular holes on the support plate is stepped.

[0009] In order to drive the printed circuit board to flip and detect the problem of false soldering of LED beads, preferably, a second motor is fixedly installed on the support frame, the output end of the second motor passes through the support frame and is equipped with a first conical tooth, and a second conical tooth that meshes with the first conical tooth is fixedly installed at the end of the rotating shaft away from the L-shaped upright plate.

[0010] To further detect issues with false soldering of LED beads by causing the rectangular frame to vibrate, the system further includes: a crank mounted on a support frame, one end of which is fixedly mounted with a push rod that passes through the support frame and abuts against the rectangular frame; a connecting roller fixedly mounted on the other end of the crank; two identical paddles fixedly mounted on the output end of a second motor and abutting against the connecting roller; and two symmetrically arranged springs, the two ends of which are fixedly connected to the rectangular frame and the support frame, respectively.

[0011] To detect whether the welded LED beads emit light, preferably, the method further includes: a drive shaft rotatably mounted on a support frame, the upper end of the drive shaft having a third conical tooth fixedly mounted to mesh with the first conical tooth, a detection plate fixedly mounted on the drive shaft, and a detection part fixedly mounted on the detection plate.

[0012] To constrain the rotation angle of the detection plate, a limit rod is fixedly installed on the detection plate, and a baffle adapted to the limit rod is fixedly installed on the rectangular frame.

[0013] To further detect whether the LED bead pin polarity is correctly soldered to the printed circuit board, the detection unit includes: a battery mounting box with a positive output terminal and a negative output terminal; multiple contact points disposed on the detection board, each of which corresponds to an LED bead, and each contact point has a positive contact and a negative contact; the positive contacts are connected in series and electrically connected to the positive output terminal of the battery mounting box, and the negative contacts are connected in series and electrically connected to the negative output terminal of the battery mounting box.

[0014] To further control whether the detection unit is powered on, a switch box electrically connected to the battery mounting box is fixedly installed on the detection plate, and a lever is fixedly installed on the support frame, with the lower end of the lever abutting against the switch box.

[0015] A method for welding and clamping LED light boards for traffic signals, the operation steps are as follows:

[0016] Step 1: Place the printed circuit board between two identical fixtures and clamp them in place. Then, solder the LED beads onto the printed circuit board one by one.

[0017] Step 2: Flip the light panel and check if there are any issues with the LED beads having poor soldering.

[0018] Step 3: The fixture rotates the printed circuit board and brings it into contact with the positive and negative terminals of the current detection. After power is applied, the quality of the soldered LED beads is checked.

[0019] Compared with the prior art, the present invention provides a welding clamping system and method for LED light panels of traffic signals, which has the following beneficial effects:

[0020] 1. This traffic signal LED light board welding clamping system, driven by a first motor, causes the pressure plate to rotate when the nut seat moves to one side of the first motor, pushed by the support arm. Simultaneously, the moving nut seat, through the meshing transmission between the rack and gear, drives the rack on the support plate to move in the opposite direction, thus pushing the support plate out to facilitate placing the light board into the circular hole on the support plate. When the output end of the first motor rotates in the opposite direction, the pushed-out support plate returns to its original position, and the rotating pressure plate covers the support plate again, fixing the light board inside. At this time, the operator can insert the LED beads into the printed circuit board for welding in sequence. With this clamping method, both sides of the light board are fully exposed, which facilitates welding and also makes it easy to inspect the welding results, avoiding secondary disassembly and assembly.

[0021] 2. In this traffic signal LED light board welding clamping system, when the second motor drives the L-shaped vertical plate to flip, the counterweight plate slides down under the action of gravity and abuts against the welded LED light beads. Under the action of pressure, it detects whether there is a problem of false welding. If there is a problem of unqualified welding or missing welding, the L-shaped vertical plate can be flipped back to its original position and re-welded without the need for secondary clamping and disassembly, thus improving production efficiency.

[0022] 3. In this traffic signal LED light board welding clamping system, after the second motor drives the L-shaped vertical plate to rotate 90°, two identical paddles rotate in sequence to contact the connecting roller and push the connecting roller outward. The connected roller under force causes the other end of the crank to push the rectangular frame to slide on the L-shaped vertical plate. In addition to shaking off the debris adhering to the light board, it also further detects whether there is a false welding problem under the action of vibration.

[0023] 4. In this traffic signal LED light board welding and clamping system, when the L-shaped upright plate is flipped, the pins that were originally facing upwards flip downwards and make contact with the positive and negative contacts on the contact head. When the contact head is energized, the polarity of the pins can be determined by whether each LED bead is lit. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a traffic signal LED light board welding clamping system proposed in this invention;

[0025] Figure 2 This is a second-view structural schematic diagram of a traffic signal LED light board welding clamping system proposed in this invention;

[0026] Figure 3 This is a schematic diagram of the counterweight plate installation structure of a traffic signal LED light board welding clamping system proposed in this invention;

[0027] Figure 4 This invention proposes a welding clamping system for LED light panels used in traffic signals. Figure 1 A schematic diagram of the structure of part A;

[0028] Figure 5 This invention proposes a welding clamping system for LED light panels used in traffic signals. Figure 1 A structural diagram of section B;

[0029] Figure 6 This invention proposes a welding clamping system for LED light panels used in traffic signals. Figure 1 A structural diagram of section C;

[0030] Figure 7 This invention proposes a welding clamping system for LED light panels used in traffic signals. Figure 2 A schematic diagram of the structure of part D.

[0031] In the diagram: 1. Support frame; 101. Base; 102. First support plate; 103. Second support plate; 2. Rotating shaft; 3. L-shaped upright plate; 4. Rectangular frame; 5. Counterweight plate; 6. Slide rail; 601. Linear groove; 7. Lead screw; 8. Nut seat; 9. Pressure plate; 10. Support arm; 11. Support plate; 12. First motor; 13. Drive gear; 14. Rack; 15. Circular hole; 16. Second motor; 17. First conical gear; 1 8. Second conical tooth; 19. Crank; 20. Push rod; 21. Connecting roller; 22. Paddle; 23. Drive shaft; 24. Third conical tooth; 25. Detection plate; 26. Limiting rod; 27. Baffle; 28. Contact contact; 2801. Positive contact; 2802. Negative contact; 29. ​​Battery mounting box; 30. Switch box; 31. Paddle; 32. Spring; 33. Connecting seat; 34. Slide rod; 35. Limiting plate; 36. Sliding pin. Detailed Implementation

[0032] 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.

[0033] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Example

[0034] Reference Figure 1 - Figure 7 A welding and clamping system for LED light panels of traffic signals includes a support frame 1, on which an L-shaped upright plate 3 is rotatably mounted via a rotating shaft 2.

[0035] The support frame 1 includes a base 101 with a certain weight, a first support plate 102 with a rectangular structure is vertically installed on the base 101, a rotating shaft 2 is rotatably installed on the first support plate 102, and a second support plate 103 is fixedly installed above the first support plate 102. In order to improve the overall stability of the device, anti-slip pads are fixedly installed below the base 101 to reduce the overall shaking of the support frame 1.

[0036] See Figure 2 and Figure 3 It also includes: a rectangular frame 4 that is slidably mounted on the L-shaped upright plate 3, and a counterweight plate 5 that is slidably connected between the inner sidewalls of the groove of the rectangular frame 4.

[0037] In practical applications, the counterweight plate 5 can be made of one or more of polymethyl methacrylate, polystyrene, polycarbonate, etc., and can be made into a transparent plate so that the LED beads can be observed to see whether they are emitting light normally.

[0038] It should be noted that a connecting seat 33 is fixedly installed on the inner wall of the rectangular frame 4, and a sliding rod 34 is slidably installed inside the connecting seat 33. One end of the sliding rod 34 passes through the connecting seat 33 and is fixedly installed with the counterweight plate 5. The other end of the sliding rod 34 passes through the connecting seat 33 and is threadedly connected to the limit plate 35. By changing the distance between the limit plate 35 and the connecting seat 33, the maximum sliding distance that the sliding rod 34 can slide when the rectangular frame 4 is flipped is constrained, thereby reducing excessive pressure on the LED beads.

[0039] Two symmetrically arranged slide rails 6 are connected internally to lead screws 7, with nut seats 8 threaded onto the lead screws 7. Specifically, sliding pins 36 are fixedly installed on the nut seats 8, and the sliding pins 36 slide within a straight groove 601 on the inner wall of the slide rail 6, thereby constraining the movement path of the nut seats 8. A pressure plate 9 is rotatably connected between the two nut seats 8, and support arms 10 are rotatably connected between the two sides of the pressure plate 9 and the rectangular frame 4. A support plate 11 is slidably mounted on the rectangular frame 4, and the support plate 11 is connected to the nut seats 8 via a drive unit. For details, please refer to [link / reference]. Figure 1 Both the pressure plate 9 and the support plate 11 have circular holes 15. The circular holes 15 on the support plate 11 have a stepped cross-section and are used to place circular printed circuit boards. The first motor 12 is fixedly installed on the rectangular frame 4. The output end of the first motor 12 is connected to the lead screws 7 on both sides by belt drive.

[0040] See Figure 1 and Figure 6 The drive unit in the solution was further optimized.

[0041] The drive unit includes a drive gear 13 rotatably mounted in the side wall of the slide rail 6, with racks 14 meshing on both sides of the drive gear 13. One rack 14 is located in the slide rail 6 and is fixedly connected to the nut seat 8, while the other rack 14 is fixedly connected to the support plate 11.

[0042] During the operation of the first motor 12, the output end of the first motor 12 drives the lead screws 7 on both sides to rotate via belt drive. Due to the constraint of the rotation of the nut seat 8 by the sliding pin 36, the nut seat 8 can only move back and forth in a straight line on the lead screw 7. When the nut seat 8 moves to one side of the first motor 12, the pressure plate 9 is rotated under the push of the support arm 10. At the same time, the moving nut seat 8 drives the rack 14 on the support plate 11 to move in the opposite direction through the meshing transmission between the rack 14 and the drive gear 13. Then, the support plate 11 is pushed out, making it convenient to place the lamp plate into the circular hole 15 on the support plate 11.

[0043] When the output of the first motor 12 rotates in the reverse direction, the ejected tray 11 is reset. At the same time, the rotating pressure plate 9 covers the tray 11 again, fixing the printed circuit board between them. At this time, the staff can insert the LED beads into the printed circuit board for soldering in sequence.

[0044] See Figure 1 and Figure 2 Furthermore, a second motor 16 is fixedly installed on the support frame 1. The output end of the second motor 16 passes through the support frame 1 and is equipped with a first conical tooth 17. A second conical tooth 18 that meshes with the first conical tooth 17 is fixedly installed at the end of the rotating shaft 2 away from the L-shaped vertical plate 3.

[0045] During the operation of the second motor 16, the output end of the second motor 16 drives the first bevel tooth 17 to rotate. The rotating first bevel tooth 17 drives the meshing second bevel tooth 18 to rotate. The rotating second bevel tooth 18 drives the L-shaped vertical plate 3 to flip through the rotating shaft 2. After flipping, the counterweight plate 5 slides down under the action of gravity and abuts against the welded LED beads. Under the action of pressure, it detects whether there is a problem of false welding.

[0046] In summary, when clamping the lamp board, the output end of the first motor 12 drives the lead screws 7 on both sides to rotate via belt drive. Due to the constraint of the rotation of the nut seat 8 by the sliding pin 36, the nut seat 8 can only move back and forth in a straight line on the lead screw 7. When the nut seat 8 moves to one side of the first motor 12, the pressure plate 9 is rotated under the push of the support arm 10. At the same time, the moving nut seat 8 drives the rack 14 on the support plate 11 to move in the opposite direction through the meshing transmission between the rack 14 and the drive gear 13. Then, the support plate 11 is pushed out, making it convenient to place the lamp board into the circular hole 15 on the support plate 11. When the output end of the first motor 12 rotates in the opposite direction, the pushed-out support plate 11 is reset. At the same time, the rotating pressure plate 9 covers the support plate 11 again, fixing the printed circuit board inside. At this time, the staff can insert the LED beads into the printed circuit board for soldering in sequence.

[0047] The welding method involves first inserting the light-emitting end of the LED bead into the lamp board, and then soldering the pins of the LED bead one by one. At this time, the light-emitting end of the LED bead is placed downward. When the second motor 16 drives the L-shaped upright plate 3 to flip, the counterweight plate 5 slides down under the action of gravity and abuts against the welded LED bead. Under the action of pressure, it is possible to detect whether there is a false soldering problem.

[0048] If there are any welding defects or missing welds, simply flip the L-shaped upright plate 3 back to its original position and re-weld it. No secondary clamping or disassembly is required, thus improving production efficiency. Example

[0049] See Figure 1 - Figure 7 The method is basically the same as that in Example 1, but further optimized based on Example 1, specifically disclosing the method for further detecting whether there is false soldering of LED beads.

[0050] See Figure 2 and Figure 7The traffic signal LED light board welding clamping system in this embodiment also includes: a crank 19 rotatably mounted on the support frame 1, a push rod 20 fixedly mounted at one end of the crank 19, the push rod 20 passing through the support frame 1 and abutting against the rectangular frame 4, and a connecting roller 21 fixedly mounted at the other end of the crank 19; two identical paddles 22 fixedly mounted on the output end of the second motor 16 and abutting against the connecting roller 21; and two symmetrically arranged springs 32, the two ends of which are fixedly connected to the rectangular frame 4 and the support frame 1, respectively.

[0051] After the second motor 16 drives the L-shaped upright plate 3 to rotate 90°, the two identical paddles 22 rotate in sequence until they contact the connecting roller 21 and push the connecting roller 21 outward. The connected roller 21 under force causes the other end of the crank 19 to push the rectangular frame 4 to slide on the L-shaped upright plate 3. In addition to shaking off the debris attached to the lamp plate, it also detects whether there is a problem of false welding under the action of oscillation. Example

[0052] See Figure 1 - Figure 7 The method is basically the same as that in Example 2, but further optimized based on Example 2, specifically disclosing the problem of detecting whether there are soldering errors in the LED lamp bead pins.

[0053] See Figure 1 and Figure 2 and Figure 4 The traffic signal LED light board welding clamping system in this embodiment also includes: a drive shaft 23 rotatably mounted on the support frame 1, a third conical tooth 24 that meshes with the first conical tooth 17 fixedly mounted on the upper end of the drive shaft 23, a detection plate 25 fixedly mounted on the drive shaft 23, and a detection part fixedly mounted on the detection plate 25.

[0054] During the operation of the second motor 16, the force output by the second motor 16 is transmitted sequentially to the third conical tooth 24 through the first conical tooth 17 and the second conical tooth 18. Therefore, when the L-shaped upright plate 3 flips downward, the rotating third conical tooth 24 drives the coaxial detection plate 25 to rotate to one side of the lamp plate until the lamp plate and the detection plate 25 are collinear. Then, the detection part on the detection plate 25 can directly detect the lamp plate.

[0055] See Figure 1 and Figure 2 Furthermore, a limit rod 26 is fixedly installed on the detection plate 25, and a baffle 27 adapted to the limit rod 26 is fixedly installed on the rectangular frame 4.

[0056] In practical applications, the limiting rod 26 can be made of metal, while the baffle 27 can be made of magnetic material that can magnetically attract metal. Therefore, when the limiting rod 26 is rotated to the designated position, the limiting rod 26 is attracted into the baffle 27 to prevent the detection plate 25 from rotating excessively.

[0057] See Figure 1 and Figure 2 and Figure 4 The testing section in this solution has been further optimized.

[0058] The detection unit includes: a battery mounting box 29 with a positive output terminal and a negative output terminal; multiple contact points 28 disposed on the detection plate 25, each of which corresponds to an LED bead, and each contact point 28 has a positive contact 2801 and a negative contact 2802; the positive contact points 2801 are connected in series and electrically connected to the positive output terminal of the battery mounting box 29, and the negative contact points 2802 are connected in series and electrically connected to the negative output terminal of the battery mounting box 29.

[0059] When the L-shaped plate 3 is flipped, the pins that were originally facing upwards flip downwards and come into contact with the positive contact 2801 and negative contact 2802 on the contact contact 28. When the contact contact 28 is energized, the polarity of the pins can be determined by whether each LED bead is lit.

[0060] See Figure 1 Furthermore, a switch box 30 electrically connected to the battery mounting box 29 is fixedly installed on the detection plate 25, and a lever 31 is fixedly installed on the support frame 1. Specifically, the lever 31 is fixedly installed on the first support plate 102, and the lower end of the lever 31 abuts against the switch box 30.

[0061] Since the battery mounting box 29 only needs to be powered when in use, when the detection board 25 rotates to one side of the lamp board, the lever 31 fixedly installed on the support frame 1 moves the switch on the switch box 30 to power on the battery mounting box 29. After the detection board 25 is rotated back in the opposite direction after the detection is completed, the lever 31 moves the switch on the switch box 30 to turn off the power to avoid wasting the battery.

[0062] A method for welding and clamping LED light boards for traffic signals, the operation steps are as follows:

[0063] Step 1: Place the light board between two identical clamps and clamp them in place. Then, solder the LED beads onto the printed circuit board one by one.

[0064] Step 2: Flip the light panel and check if there are any issues with the LED beads having poor soldering.

[0065] Step 3: The fixture rotates the printed circuit board and brings it into contact with the positive and negative terminals of the current detection. After power is applied, the quality of the soldered LED beads is checked.

[0066] In step 1, driven by the first motor 12, when the nut seat 8 moves to one side of the first motor 12, the pressure plate 9 rotates under the push of the support arm 10. At the same time, the moving nut seat 8 drives the rack 14 on the support plate 11 to move in the opposite direction through the meshing transmission between the rack 14 and the drive gear 13. Then, the support plate 11 is pushed out, making it convenient to place the lamp plate in the circular hole 15 on the support plate 11. When the output end of the first motor 12 rotates in the opposite direction, the pushed-out support plate 11 is reset. At the same time, the rotating pressure plate 9 covers the support plate 11 again, realizing the clamping of the lamp plate.

[0067] In step 2, the light-emitting end of the LED bead is inserted into the lamp board, and then the pins of the LED bead are soldered in sequence. At this time, the light-emitting end of the LED bead is placed downward. When the second motor 16 drives the L-shaped upright plate 3 to flip, the counterweight plate 5 slides down under the action of gravity and abuts against the soldered LED bead. Under the action of pressure, it is detected whether there is a false soldering problem.

[0068] In step 3, the force output by the second motor 16 is transmitted sequentially to the third conical tooth 24 through the first conical tooth 17 and the second conical tooth 18. Therefore, when the L-shaped plate 3 flips downward, the rotating third conical tooth 24 drives the coaxial detection plate 25 to rotate to one side of the lamp plate until the lamp plate and the detection plate 25 are collinear. After the L-shaped plate 3 flips, the pins that were originally facing upward flip downward and come into contact with the positive contact 2801 and the negative contact 2802 on the contact contact 28. When the contact contact 28 is energized, the polarity of the pins can be determined by whether each LED bead is lit.

[0069] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding clamping system for LED light panels of traffic signals, comprising a support frame (1), wherein an L-shaped upright plate (3) is rotatably mounted on the support frame (1) via a rotating shaft (2), characterized in that, Also includes: A rectangular frame (4) is slidably mounted on an L-shaped upright plate (3), and a counterweight plate (5) is slidably connected between the inner sidewalls of the groove of the rectangular frame (4). Two symmetrically arranged slide rails (6) are connected to a lead screw (7) inside the slide rail (6). A nut seat (8) is threaded onto the lead screw (7). A pressure plate (9) is rotatably connected between the two nut seats (8). Support arms (10) are rotatably connected between the two sides of the pressure plate (9) and the rectangular frame (4). A tray (11) is slidably mounted on a rectangular frame (4), and the connection between the tray (11) and the nut seat (8) is transmitted through a drive unit; The first motor (12) is fixedly installed on the rectangular frame (4), and the output end of the first motor (12) is connected to the lead screws (7) on both sides by belt drive. The drive unit includes: a drive gear (13) rotatably installed in the side wall of the slide rail (6), and racks (14) meshing on both sides of the drive gear (13). One rack (14) is located in the slide rail (6) and fixedly connected to the nut seat (8), and the other rack (14) is fixedly connected to the support plate (11). Both the pressure plate (9) and the support plate (11) are provided with circular holes (15), and the cross-section of the circular holes (15) on the support plate (11) is stepped. A second motor (16) is fixedly installed on the support frame (1). The output end of the second motor (16) passes through the support frame (1) and is equipped with a first conical tooth (17). A second conical tooth (18) that meshes with the first conical tooth (17) is fixedly installed at one end of the rotating shaft (2) away from the L-shaped vertical plate (3). The output end of the second motor (16) drives the first conical tooth (17) to rotate. The rotating first conical tooth (17) drives the meshing second conical tooth (18) to rotate. The rotating second conical tooth (18) drives the L-shaped vertical plate (3) to flip through the rotating shaft (2). After flipping, the counterweight plate (5) slides down under the action of gravity and abuts against the welded LED beads.

2. The LED light board welding clamping system for traffic signals according to claim 1, characterized in that, Also includes: Rotate the crank (19) mounted on the support frame (1). A push rod (20) is fixedly mounted on one end of the crank (19). The push rod (20) passes through the support frame (1) and abuts against the rectangular frame (4). A connecting roller (21) is fixedly mounted on the other end of the crank (19). Two identical paddles (22) are fixedly mounted on the output end of the second motor (16) and abut against the connecting roller (21); Two symmetrically arranged springs (32) are fixedly connected at both ends to a rectangular frame (4) and a support frame (1), respectively.

3. The LED light board welding clamping system for traffic signals according to claim 1, characterized in that, Also includes: A drive shaft (23) is rotatably mounted on a support frame (1). A third conical tooth (24) that meshes with the first conical tooth (17) is fixedly mounted on the upper end of the drive shaft (23). A detection plate (25) is fixedly mounted on the drive shaft (23). A detection part is fixedly mounted on the detection plate (25).

4. The LED light board welding clamping system for traffic signals according to claim 3, characterized in that, A limiting rod (26) is fixedly installed on the detection plate (25), and a baffle (27) adapted to the limiting rod (26) is fixedly installed on the rectangular frame (4).

5. The LED light board welding clamping system for traffic signals according to claim 4, characterized in that, The detection unit includes: A battery mounting box (29) with a positive output terminal and a negative output terminal. Multiple contact points (28) are provided on the detection plate (25), and each of the multiple contact points (28) corresponds to an LED lamp bead. Each contact point (28) has a positive contact (2801) and a negative contact (2802). The positive contacts (2801) are connected in series and electrically connected to the positive output terminal of the battery mounting box (29), and the negative contacts (2802) are connected in series and electrically connected to the negative output terminal of the battery mounting box (29).

6. The LED light board welding clamping system for traffic signals according to claim 5, characterized in that, A switch box (30) electrically connected to the battery mounting box (29) is fixedly installed on the detection plate (25), and a lever (31) is fixedly installed on the support frame (1), with the lower end of the lever (31) abutting against the switch box (30).

7. A method for welding and clamping LED light boards for traffic signals, employing the LED light board welding and clamping system for traffic signals as described in any one of claims 1-6, characterized in that, The operation steps are as follows: Step 1: Place the printed circuit board between two clamps of the same specifications and clamp it in place. Then, solder the LED beads onto the printed circuit board in sequence. Driven by the first motor (12), when the nut seat (8) moves to one side of the first motor (12), the pressure plate (9) is rotated by the push of the support arm (10). The moving nut seat (8) drives the rack (14) on the support plate (11) to move in the opposite direction through the meshing transmission between the rack (14) and the drive gear (13). Then, the support plate (11) is pushed out and the lamp plate is placed in the circular hole (15) on the support plate (11). When the output end of the first motor (12) rotates in the opposite direction, the pushed-out support plate (11) is reset. At the same time, the rotating pressure plate (9) covers the support plate (11) again, thus clamping the lamp plate. Step 2: Flip the light panel and check if there are any issues with the LED beads having poor soldering. Step 3: The fixture rotates the printed circuit board and brings it into contact with the positive and negative terminals of the current detection. After power is applied, the quality of the soldered LED beads is checked.

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