Flexible circuit board welding device

Abstract

The invention discloses a flexible circuit board welding device, and particularly relates to the technical field of flexible circuit board welding, the flexible circuit board welding device comprises a shell, four corners of the lower end of the shell are fixedly connected with supporting legs, the left end of the shell is fixedly provided with a control box, and the rear side of the upper part of the inner surface of the shell is provided with a welding assembly; the inner surface and the left end of the shell are jointly provided with an overturning preheating assembly, and the upper portion and the right portion of the inner surface of the shell are jointly provided with a smoothing assembly. According to the welding device for the flexible circuit board, by arranging the overturning and preheating assembly, the flexible circuit board can be automatically fixed in the conveying process, overturning and preheating are combined, the flexible circuit board is heated more uniformly, thermal stress generated in the welding process is reduced, and the welding quality of the flexible circuit board is improved. The risk that the circuit board is damaged due to rapid temperature change is reduced, the welding process is more uniform and efficient, moisture, oil stains and other impurities on the surface of the circuit board can be more effectively removed, and better conditions are created for welding.

Description

Technical Field

[0001] The present invention relates to the technical field of flexible circuit board welding, and in particular to a flexible circuit board welding device. Background Art

[0002] Flexible circuit boards are printed circuits made of flexible insulating substrates. Flexible circuits provide excellent electrical properties, can meet the design needs of smaller and higher density installations, and also help reduce assembly processes and enhance reliability. They can be bent, wound, and folded freely, can withstand millions of dynamic bends without damaging the wires, can be arranged arbitrarily according to spatial layout requirements, and can be moved and stretched arbitrarily in three-dimensional space, thereby achieving the integration of component assembly and wire connection.

[0003] Chinese patent announcement number CN221337339U discloses a flexible circuit board welding device, which relates to the technical field of welding devices, including an operating table, a square opening is opened inside the operating table, a placement frame is arranged inside the square opening, one end of the placement frame is connected to a pressure frame through a first rotating shaft, the pressure frame cooperates with the placement frame, both ends of the first rotating shaft are equipped with torsion springs, one end of the torsion spring is fixedly connected to the pressure frame, and the other end of the torsion spring is fixedly connected to the inner wall of the placement frame, a welding device for welding is arranged on the operating table, and a driving component for driving the placement frame to flip is arranged on the operating table. In this flexible circuit board welding device, when the single-sided welding is completed and the circuit board needs to be turned over, the motor is started, the motor rotates to drive the second rotating shaft to rotate, the second rotating shaft rotates to drive the placement frame to rotate, and then drives the circuit board to flip over, the operation is simple and convenient, and the processing efficiency is improved; however, the above patent document still has the following defects during implementation:

[0004] Although the above patent can make the circuit board be turned over for welding during implementation, it is not possible to turn the flexible circuit board over and preheat it before welding, and it is not possible to blow hot air during the welding process. Summary of the invention

[0005] The main purpose of the present invention is to provide a flexible circuit board welding device, which can effectively solve the problem that the flexible circuit board cannot be turned over and preheated before welding, and hot air cannot be blown during the welding process.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a flexible circuit board welding device, comprising a shell, support legs are fixedly connected at the four corners of the lower end of the shell, a control box is fixedly installed at the left end of the shell, a welding assembly is arranged on the rear side of the upper inner surface of the shell, a flip preheating assembly is jointly arranged on the inner surface and the left end of the shell, and a smoothing assembly is jointly arranged on the upper inner surface and the right part of the shell.

[0007] Preferably, the flipping preheating assembly includes a partition fixedly connected to the inner surface of the outer shell, a welding table is fixedly connected to the rear of the upper end of the partition, a conveying mechanism is arranged on the inner surface of the outer shell, a fixed flipping mechanism is symmetrically arranged on the upper end of the conveying mechanism, and a blowing mechanism and an extension mechanism are arranged on the left end of the outer shell.

[0008] Preferably, the conveying mechanism includes a threaded rod which is symmetrically connected to the inner surface of the outer shell for rotation, the front end of the threaded rod located on the left is fixedly connected to a servo motor fixedly connected to the front end of the outer shell, the outer surfaces of the two threaded rods are threadedly connected to sliders which are slidably connected to the partition, the front fronts of the outer surfaces of the two threaded rods are commonly fixedly connected to a pulley group 1, the upper ends of the two sliders are symmetrically fixedly connected to support columns front and back, the front part of the lower end of the partition is fixedly connected to a sliding rod, the outer surface of the sliding rod is slidably connected to a placing table which is slidably connected to the partition, the ends of the two sliders close to each other are fixedly installed with electromagnetic blocks 1, and the lower end of the placing table is located in front of the electromagnetic block 1 and is symmetrically fixedly installed with electromagnetic blocks 2.

[0009] Preferably, the fixed flipping mechanism includes a fixed block fixedly connected to the upper ends of the two support columns on the same side, the inner surface of the fixed block is rotatably connected to a disc rod, the left end of the disc rod is fixedly connected to a concave block, the inner surface of the concave block is symmetrically fixedly connected to a hollow cylinder, the inner surfaces of the two hollow cylinders are slidably connected to a piston push rod 1, the ends of the two piston push rods 1 close to each other are fixedly connected to a fixed plate, the inner surface of the disc rod is slidably connected to a piston push rod 2, the outer surface of the piston push rod 2 is sleeved with a return spring 1, the two ends of the return spring 1 are respectively fixedly connected to the right part of the inner surface of the disc rod and the right end of the piston on the piston push rod 2, and the sides of the inner surfaces of the two hollow cylinders that are away from each other both penetrate and extend to the inner surface of the disc rod and are fixedly connected to a connecting pipe.

[0010] Preferably, the right end of the second piston push rod is fixedly connected to an extrusion block one, the right part of the inner surface of the outer shell is fixedly connected to an extrusion block two, the outer surface of the disc rod is fixedly connected to a gear, and the middle side of the right part of the inner surface of the outer shell is fixedly connected to a rack meshing with the gear.

[0011] Preferably, the hair dryer mechanism includes a dual-axis motor fixedly connected to the left end of the outer shell, a circular hole cover is fixedly connected to the left end of the outer shell, the inner surface of the circular hole cover is rotatably connected to a transmission rod, the outer surface of the transmission rod is located in the inner cavity of the circular hole cover and is fixedly connected to fan blades, the left output end of the dual-axis motor is fixedly connected to a rotating rod through a coupling, and the outer surface of the rotating rod and the outer surface of the transmission rod are jointly fixedly connected to a belt pulley 2.

[0012] Preferably, the extension mechanism comprises a hollow box fixedly connected to the outer shell, a heating plate is fixedly installed on the inner surface of the hollow box, a plurality of blocking plates are fixedly connected to the inner surface of the hollow box in a linearly equidistant and staggered manner, an upper portion of the inner surface of the hollow box passes through and extends to the inner surface of the outer shell and is fixedly connected to an air outlet pipe, a circular hole plate is fixedly connected to the outer surface of the air outlet pipe, a connecting block is fixedly connected to the outer surface of the welding assembly, a hose is fixedly connected to the inner surface of the air outlet pipe passing through and extending to the lower end of the connecting block, a solenoid valve is fixedly installed at the intersection of the air outlet pipe and the outer surface of the hose, and the hollow box is connected to the circular hole cover by a connecting pipe.

[0013] Preferably, the smoothing assembly comprises a guide block fixedly connected to the upper portion of the inner surface of the shell, the left and right portions of the inner surface of the shell are jointly provided with a smoothing mechanism, and the right portion of the inner surface of the shell is provided with a telescopic mechanism.

[0014] Preferably, the smoothing mechanism includes a reciprocating rod rotatably connected to the inner surface of the shell, the left end of the reciprocating rod is fixedly connected to the right output end of the dual-axis motor through a coupling, the inner surface of the shell is located behind the reciprocating rod and fixedly connected to a limiting rod, the outer surfaces of the reciprocating rod and the limiting rod are slidably connected to a rectangular block, the inner surface of the rectangular block is slidably connected to a round rod, the lower end of the round rod is fixedly connected to an extrusion wheel 1, the upper end of the round rod is fixedly connected to an extrusion wheel 2, the outer surface of the round rod is sleeved with a reset spring 2, and the two ends of the reset spring 2 are respectively fixedly connected to the lower end of the extrusion wheel 2 and the upper end of the rectangular block.

[0015] Preferably, the telescopic mechanism comprises a spring telescopic rod fixedly connected to the right portion of the inner surface of the shell, a push plate is fixedly connected to the left end of the spring telescopic rod, and an L-shaped plate is fixedly connected to the lower end of the rectangular block.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, by providing a fixed flipping mechanism, a blower mechanism and an extension mechanism, the flexible circuit board can be automatically fixed during the transportation process, and the flipping is combined with preheating to make the flexible circuit board heated more evenly, reduce the thermal stress generated during the welding process, and reduce the risk of damage to the circuit board due to rapid temperature changes. The welding process is more uniform and efficient, and impurities such as moisture and oil on the surface of the circuit board can be more effectively removed, creating better conditions for welding.

[0018] 2. In the present invention, by providing an extension mechanism, the flow of hot air is changed in the reverse direction under the control of the solenoid valve and blown out through the hose, so that the hot air can effectively remove debris, oil stains and other harmful substances on the surface of the flexible circuit board, making the surface of the circuit board cleaner and smoother, thereby helping to improve the welding quality and overall performance, making the metal material on the surface of the flexible circuit board easier to melt, and then better combining with solder, improving the firmness and reliability of welding, reducing the temperature difference between the flexible circuit board and the welding, and reducing the deformation of the flexible circuit board welding.

[0019] 3. In the present invention, by providing a smoothing mechanism and a telescopic mechanism, the extrusion wheel 1 can smooth the flexible circuit board, so that the flexible circuit board remains flat during welding, avoiding welding errors caused by warping or unevenness of the circuit board, helping to ensure the accuracy and reliability of the welding points, thereby improving the performance of the entire circuit board, and can also help remove minor flaws and unevenness on the surface of the circuit board, so that the solder can be more evenly distributed on the welding points. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the partition and the welding platform of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the flip preheating component and the smoothing component of the present invention;

[0024] Figure 5 It is a schematic diagram of the cleaning component and the air-drying component of the present invention;

[0025] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 7 It is a schematic diagram of the cross-sectional structure of the fixed turning mechanism of the present invention;

[0027] Figure 8 It is a schematic cross-sectional structure diagram of the hair dryer mechanism and the extension mechanism of the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the smoothing mechanism of the present invention;

[0029] Fig.10 It is a schematic diagram of the telescopic mechanism structure of the present invention.

[0030] In the figure: 1. shell; 2. support leg; 3. control box; 4. flip preheating assembly; 41. partition; 42. welding table; 43. conveying mechanism; 431. threaded rod; 432. servo motor; 433. pulley group 1; 434. slider; 435. support column; 436. slide bar; 437. placement table; 438. electromagnetic block 1; 439. electromagnetic block 2; 44. fixed flip mechanism; 441. fixed block; 442. disc rod; 443. concave block; 444. hollow cylinder; 445. piston push rod 1; 446. fixed plate; 447. connecting pipe; 448. piston push rod 2; 449. reset spring 1; 4410. extrusion block 1; 4411. extrusion block 2; 4412. gear; 4413. rack; 45. Blower mechanism; 451. Double-axis motor; 452. Circular hole cover; 453. Transmission rod; 454. Belt pulley 2; 455. Fan blade; 456. Rotating rod; 46. Extension mechanism; 461. Hollow box; 462. Heating plate; 463. Blocking plate; 464. Air outlet pipe; 465. Circular hole plate; 466. Hose; 467. Solenoid valve; 468. Connecting block; 5. Smoothing assembly; 51. Guide block; 52. Smoothing mechanism; 521. Reciprocating rod; 522. Limiting rod; 523. Rectangular block; 524. Round rod; 525. Extrusion wheel 1; 526. Extrusion wheel 2; 527. Reset spring 2; 53. Telescopic mechanism; 531. Spring telescopic rod; 532. Push plate; 533. L-shaped plate; 6. Welding assembly. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] Embodiment 1, as Figure 1 and Figure 2 As shown, a flexible circuit board welding device includes a shell 1, support legs 2 are fixedly connected to the four corners of the lower end of the shell 1, a control box 3 is fixedly installed on the left end of the shell 1, a welding component 6 is arranged on the rear side of the upper inner surface of the shell 1, a flip preheating component 4 is commonly arranged on the inner surface and the left end of the shell 1, and a smoothing component 5 is commonly arranged on the upper inner surface and the right part of the shell 1.

[0033] During the implementation of this embodiment, both sides of the flexible circuit board are placed in the flip preheating component 4. At this time, the control box 3 is operated to make the flip preheating component 4 transport the flexible circuit board, and fix the two sides of the flexible circuit board by hydraulic means during the transportation process, and then drive the flexible circuit board to flip, and blow hot air on it during the flipping process, so that the flexible circuit board can be evenly heated, and then the preheated flexible circuit board is smoothed by the smoothing component 5, so that the flexible circuit board can avoid wrinkles and looseness, and after smoothing, the flexible circuit board is welded by the welding component 6.

[0034] The control box 3 mentioned above is a mature control technology means and equipment in the prior art. In this solution, the controllable functions are utilized, and its internal structure, principle and connection method are not further explained.

[0035] The welding assembly 6 mentioned above is a mature welding technology means and equipment in the prior art. In this solution, its function of welding the flexible circuit board is utilized, and its internal structure, principle and connection method are not further explained.

[0036] Specifically, in order to achieve the continuous flipping and preheating of the flexible circuit board, refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 In this embodiment, the flip preheating assembly 4 includes a partition 41 fixedly connected to the inner surface of the outer shell 1, a welding table 42 is fixedly connected to the upper rear part of the partition 41, a conveying mechanism 43 is provided on the inner surface of the outer shell 1, and a fixed flipping mechanism 44 is symmetrically provided on the upper end of the conveying mechanism 43, and a blowing mechanism 45 and an extension mechanism 46 are provided on the left end of the outer shell 1.

[0037] For further information, see Figure 4 , Figure 5 and Figure 6 In this embodiment, the conveying mechanism 43 includes a threaded rod 431 which is symmetrically connected to the inner surface of the shell 1 for rotation, a servo motor 432 which is fixedly connected to the front end of the shell 1 is located at the front end of the left threaded rod 431, the outer surfaces of the two threaded rods 431 are threadedly connected to sliders 434 which are slidably connected to the partition 41, the front fronts of the outer surfaces of the two threaded rods 431 are commonly fixedly connected to a pulley set 1 433, the upper ends of the two sliders 434 are symmetrically fixedly connected to support columns 435, the front part of the lower end of the partition 41 is fixedly connected to a slide rod 436, the outer surface of the slide rod 436 is slidably connected to a placement table 437 which is slidably connected to the partition 41, the ends of the two sliders 434 which are close to each other are fixedly installed with electromagnetic blocks 1 438, and the lower end of the placement table 437 is located in front of the electromagnetic block 1 438 and is symmetrically fixedly installed with electromagnetic blocks 2 439.

[0038] For further information, see Figure 4 and Figure 7 In this embodiment, the fixed flip mechanism 44 includes a fixed block 441 fixedly connected to the upper ends of the two support columns 435 on the same side, the inner surface of the fixed block 441 is rotatably connected to a disc rod 442, the left end of the disc rod 442 is fixedly connected to a concave block 443, the inner surface of the concave block 443 is symmetrically fixedly connected to a hollow cylinder 444, the inner surfaces of the two hollow cylinders 444 are slidably connected to a piston push rod 1 445, the ends of the two piston push rods 1 445 close to each other are fixedly connected to a fixed plate 446, the inner surface of the disc rod 442 is slidably connected to a piston push rod 2 448, the outer surface of the piston push rod 2 448 is sleeved with a return spring 1 449, the two ends of the return spring 1 449 are respectively fixedly connected to the right part of the inner surface of the disc rod 442 and the right end of the piston on the piston push rod 2 448, and the inner surfaces of the two hollow cylinders 444 that are away from each other are both penetrated and extended to the inner surface of the disc rod 442 and are fixedly connected to a connecting pipe 447.

[0039] For further information, see Figure 4 and Figure 7 In this embodiment, the right end of the piston push rod 448 is fixedly connected to the extrusion block 4410, the right part of the inner surface of the shell 1 is fixedly connected to the extrusion block 4411, the outer surface of the disc rod 442 is fixedly connected to the gear 4412, and the middle side of the right part of the inner surface of the shell 1 is fixedly connected to the rack 4413 meshing with the gear 4412.

[0040] During the implementation process, the flexible circuit board is placed between the two concave blocks 443, and the flexible circuit board is placed on the placement table 437. Then, the output end of the servo motor 432 is started to drive the threaded rod 431 on the left to rotate through the coupling, and the threaded rod 431 on the right is driven to rotate synchronously under the transmission action of the pulley group 433. Since the slider 434 and the threaded rod 431 are threadedly connected, the slider 434 slides on the inner surface of the partition 41 and moves backward. At the same time, the electromagnetic block 1 438 and the electromagnetic block 2 439 are magnetically attracted to each other, so that the slider 434 will drive the placement table 437 to rotate synchronously during the rearward movement. Movement backward allows the flexible circuit board to be stably transported backward. When the extrusion block 1 4410 is away from the extrusion block 2 4411, the piston push rod 2 448 will move toward the center under the compression reaction force of the return spring 1 449, and the piston push rods 2 448 on both sides will push the hydraulic oil in the disc rod 442 into the hollow cylinder 444 through the connecting pipe 447, so that the hydraulic oil can push the two piston push rods 2 448 on the same side to move toward the center, so that the fixing plates 446 on the two piston push rods 2 448 can stably fix the two sides of the flexible circuit board, thus preparing the prerequisite for the subsequent flipping of the flexible circuit board.

[0041] Secondly, when the placement table 437 moves to the maximum rear distance, the electromagnetic block 1 438 will no longer be magnetically attracted to the electromagnetic block 2 439, so that the placement table 437 cannot slide. During the sliding process of the placement table 437, the fixing plate 446 can effectively fix the flexible circuit board.

[0042] The electromagnetic block 1 438 and the electromagnetic block 2 439 mentioned above are both mature electromagnetic magnetic attraction technical means and equipment in the prior art. In this solution, their mutual magnetic attraction function is utilized, and their internal structure, principle and connection method are not further explained.

[0043] The servo motor 432 mentioned above is a mature driving technology means and equipment in the prior art. In this solution, its output end can be used for forward and reverse rotation, and it can stop in time after rotating to a set number of circles. Its internal structure, principle and connection method will not be explained again.

[0044] For further information, see Figure 4 and Figure 8 In this embodiment, the hair dryer mechanism 45 includes a dual-axis motor 451 fixedly connected to the left end of the shell 1, a circular hole cover 452 fixedly connected to the left end of the shell 1, a transmission rod 453 is rotatably connected to the inner surface of the circular hole cover 452, and a fan blade 455 is fixedly connected to the outer surface of the transmission rod 453 located in the inner cavity of the circular hole cover 452, and the left end output end of the dual-axis motor 451 is fixedly connected to a rotating rod 456 through a coupling, and the outer surface of the rotating rod 456 and the outer surface of the transmission rod 453 are jointly fixedly connected to a belt pulley 454.

[0045] For further information, see Figure 4 and Figure 8 In this embodiment, the extension mechanism 46 includes a hollow box 461 fixedly connected to the outer shell 1, a heating plate 462 is fixedly installed on the inner surface of the hollow box 461, a plurality of blocking plates 463 are fixedly connected to the inner surface of the hollow box 461 in a linear equidistant and staggered manner, an air outlet pipe 464 is fixedly connected to the upper part of the inner surface of the hollow box 461 and extends to the inner surface of the outer shell 1, a circular hole plate 465 is fixedly connected to the outer surface of the air outlet pipe 464, a connecting block 468 is fixedly connected to the outer surface of the welding assembly 6, a hose 466 is fixedly connected to the lower end of the connecting block 468 on the inner surface of the air outlet pipe 464, a solenoid valve 467 is fixedly installed at the intersection of the outer surfaces of the air outlet pipe 464 and the hose 466, and the hollow box 461 is connected to the circular hole cover 452 through a connecting pipe.

[0046] During the implementation process, the fixed flexible circuit board will continue to move backward. When the gear 4412 and the rack 4413 are meshed with each other, the gear 4412 will drive the disc rod 442 to rotate, so that the flexible circuit board fixed on the fixed plate 446 will flip over. At the same time, by starting the left end output end of the dual-axis motor 451, the rotating rod 456 is driven to rotate through the coupling. Under the transmission action of the belt group wheel 454, the fan blade 455 on the transmission rod 453 rotates, and then the air is sucked into the hollow box 461 through the connecting pipe on the circular hole cover 452, and the temperature of the air is heated under the action of the heating plate 462. Since the blocking plates 463 are staggered, The air follows an S-shaped path, which can increase the air residence time, allowing the air to have sufficient time to heat up. Subsequently, the air outlet 464 and the circular hole plate 465 are used to blow air evenly on the flipped flexible circuit board, so that the flexible circuit board reaches an appropriate temperature during welding and is heated more evenly, allowing the solder to flow and penetrate into the welding point more easily to form a firm welding connection. This also helps to reduce the thermal stress generated during the welding process, and reduce the risk of the circuit board being damaged due to rapid temperature changes, making the welding process more uniform and efficient, and more effectively removing moisture, oil and other impurities on the surface of the circuit board, creating better conditions for welding. Preheating helps their volatilization and removal.

[0047] Secondly, in the subsequent flexible circuit board welding process, the flow direction of the hot air can be changed under the control of the solenoid valve 467 to be blown out through the hose 466, so that the hot air can effectively remove debris, oil stains and other harmful substances on the surface of the flexible circuit board, making the circuit board surface cleaner and smoother, thereby helping to improve the welding quality and overall performance, and can make the metal material on the surface of the flexible circuit board easier to melt, and then better combine with the solder, thereby improving the firmness and reliability of the welding, and can reduce the temperature difference between the flexible circuit board and the welding, and reduce the deformation of the flexible circuit board welding.

[0048] The belt pulley set 1 433 and the belt pulley set 2 454 mentioned above are both composed of two belt pulleys and a belt.

[0049] The rotation between the disc rod 442 and the fixed block 441 mentioned above has a certain resistance, that is, after the gear 4412 and the rack 4413 are disengaged, the disc rod 442 will not rotate. At the same time, after the gear 4412 and the rack 4413 are disengaged, the rotation angle of the disc rod 442 is still at the initial state, and the concave block 443 can be parallel to the shell 1.

[0050] The solenoid valve 467 mentioned above is a mature control technology means and equipment in the prior art. In this solution, its function of controlling the flow direction of the gas is utilized, and its internal structure, principle and connection method are no longer explained.

[0051] The heating plate 462 mentioned above is a mature heating technology means and equipment in the prior art. In this solution, its function of heating the air is utilized, and its internal structure, principle and connection method are not further explained.

[0052] Embodiment 2: Based on Embodiment 1, this embodiment adds a smoothing component 5 for smoothing the preheated flexible circuit board, so as to achieve the purpose of smoothing the preheated flexible circuit board.

[0053] Specifically, in order to smooth the preheated flexible circuit board, refer to Figure 8 , Figure 4 , Fig. 9 and Fig.10 In this embodiment, the smoothing assembly 5 includes a guide block 51 fixedly connected to the upper inner surface of the shell 1, a smoothing mechanism 52 is provided on the left and right inner surfaces of the shell 1, and a telescopic mechanism 53 is provided on the right inner surface of the shell 1.

[0054] For further information, see Figure 4 and Fig. 9 In this embodiment, the smoothing mechanism 52 includes a reciprocating rod 521 rotatably connected to the inner surface of the shell 1, the left end of the reciprocating rod 521 is fixedly connected to the right end output end of the dual-axis motor 451 through a coupling, the inner surface of the shell 1 is located behind the reciprocating rod 521 and is fixedly connected to a limiting rod 522, the outer surfaces of the reciprocating rod 521 and the limiting rod 522 are slidably connected with a rectangular block 523, the inner surface of the rectangular block 523 is slidably connected with a round rod 524, the lower end of the round rod 524 is fixedly connected with an extrusion wheel 1 525, the upper end of the round rod 524 is fixedly connected with an extrusion wheel 2 526, the outer surface of the round rod 524 is sleeved with a reset spring 2 527, and the two ends of the reset spring 2 527 are respectively fixedly connected to the lower end of the extrusion wheel 2 526 and the upper end of the rectangular block 523.

[0055] During the implementation process, the preheated flexible circuit board continues to move backward under the fixing action of the fixed flip mechanism 44. When it moves to the position set by the welding table 42, it stops moving backward and starts the right end output end of the dual-axis motor 451 to drive the reciprocating rod 521 to rotate through the coupling. Since the rectangular block 523 and the reciprocating rod 521 are slidably connected, the rectangular block 523 moves to the right under the limiting action of the limiting rod 522, and at the same time drives the round rod 524 to move, so that the extrusion wheel 2 526 slides at the lower end of the guide block 51, so that the extrusion wheel 2 526 is affected by the guide block The extrusion of 51 pushes the round rod 524 downward to make the extrusion wheel 525 close to the flexible circuit board, and finally smoothes the flexible circuit board during the backward movement. The flexible circuit board remains flat during welding to avoid welding errors caused by warping or unevenness of the circuit board. This improvement in precision helps to ensure the accuracy and reliability of the welding points, thereby improving the performance of the entire circuit board. Smoothing can also remove minor flaws and unevenness on the surface of the circuit board, so that the solder can be more evenly distributed on the welding points, forming a more solid and stable welding connection, and reducing the possibility of welding defects and failures.

[0056] The reciprocating rod 521 and the rectangular block 523 described above constitute a mature ball screw mechanism in the prior art.

[0057] The dual-axis motor 451 mentioned above is a mature driving technology means and equipment in the prior art. In this solution, the couplings on both sides thereof are used to rotate independently, and its internal structure, connection method and principle are not further explained.

[0058] For further information, see Figure 4 and Fig.10 In this embodiment, the telescopic mechanism 53 includes a spring telescopic rod 531 fixedly connected to the right part of the inner surface of the shell 1, the left end of the spring telescopic rod 531 is fixedly connected to the push plate 532, and the lower end of the rectangular block 523 is fixedly connected to the L-shaped plate 533.

[0059] During the implementation process, when the rectangular block 523 moves to the right, it will drive the push plate 532 to move backward. At the same time, the extrusion wheel 525 will smooth the flexible circuit board. The push plate 532 will squeeze the L-shaped plate 533 and the spring telescopic rod 531, so that the right end of the L-shaped plate 533 will squeeze the extrusion block 1 4410 to the right and drive the piston push rod 2 448 to extract the hydraulic oil in the hollow cylinder 444, so that the fixed plates 446 are moved away from each other, so that the right side of the flexible circuit board is no longer fixed, and the smoothed part will enter between the two fixed plates 446 on the right. Then, when the rectangular block 523 moves to the left, the fixed plate 446 is reset under the action of the reset spring 1 449 to fix the flexible circuit board again, so as to avoid wrinkles or bending of the flexible circuit board during the smoothing process and improve the accuracy of subsequent welding.

[0060] Working process: When in use, the flexible circuit board is driven to perform a fixed operation during the conveying process through the cooperation of the conveying mechanism 43 and the fixed flipping mechanism 44, and finally, the flexible circuit board is flipped and preheated with the cooperation of the fixed flipping mechanism 44, the blower mechanism 45 and the extension mechanism 46, so that the flexible circuit board is heated more evenly, and then the flexible circuit board is smoothed with the cooperation of the smoothing mechanism 52 and the telescopic mechanism 53, and in the final welding, the extension mechanism 46 can blow hot air to the flexible circuit board during the welding process.

[0061] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A flexible circuit board welding device, comprising a housing (1), characterized in that: Support legs (2) are fixedly connected at the four corners of the lower end of the shell (1), a control box (3) is fixedly installed at the left end of the shell (1), a welding assembly (6) is arranged at the rear side of the upper part of the inner surface of the shell (1), a flip preheating assembly (4) is arranged on the inner surface and the left end of the shell (1), and a smoothing assembly (5) is arranged on the upper part and the right part of the inner surface of the shell (1).

2. A flexible circuit board welding device according to claim 1, characterized in that: The overturning preheating assembly (4) comprises a partition (41) fixedly connected to the inner surface of the outer shell (1); a welding platform (42) is fixedly connected to the rear portion of the upper end of the partition (41); a conveying mechanism (43) is provided on the inner surface of the outer shell (1); a fixed overturning mechanism (44) is symmetrically provided at the upper end of the conveying mechanism (43); and a blowing mechanism (45) and an extension mechanism (46) are provided at the left end of the outer shell (1).

3. A flexible circuit board welding device according to claim 2, characterized in that: The conveying mechanism (43) comprises a threaded rod (431) symmetrically connected to the inner surface of the housing (1) for rotation, the front end of the threaded rod (431) on the left being fixedly connected to a servo motor (432) fixedly connected to the front end of the housing (1), the outer surfaces of the two threaded rods (431) are threadedly connected to sliders (434) slidably connected to the partition (41), the outer front ends of the two threaded rods (431) are commonly fixedly connected to a pulley set (433), and the two sliders (434) are fixedly connected to the outer surfaces of the two threaded rods (431). 34) The upper ends are both symmetrically fixedly connected with support columns (435) at the front and rear ends, the front part of the lower end of the partition (41) is fixedly connected with a slide rod (436), the outer surface of the slide rod (436) is slidably connected with a placement table (437) slidably connected to the partition (41), and the ends of the two sliders (434) close to each other are fixedly installed with electromagnetic blocks 1 (438), and the lower end of the placement table (437) is located in front of the electromagnetic block 1 (438) and is symmetrically fixedly installed with electromagnetic blocks 2 (439) at the left and right ends.

4. A flexible circuit board welding device according to claim 3, characterized in that: The fixed flip mechanism (44) comprises a fixed block (441) fixedly connected to the upper ends of two support columns (435) on the same side; the inner surface of the fixed block (441) is rotatably connected to a disk rod (442); the left end of the disk rod (442) is fixedly connected to a concave block (443); the inner surface of the concave block (443) is symmetrically fixedly connected to a hollow cylinder (444) in an upper and lower manner; the inner surfaces of the two hollow cylinders (444) are both slidably connected to a piston push rod (445); the two piston push rods (445) are close to each other. One end is fixedly connected with a fixing plate (446), the inner surface of the disc rod (442) is slidably connected with a piston push rod 2 (448), the outer surface of the piston push rod 2 (448) is sleeved with a return spring 1 (449), the two ends of the return spring 1 (449) are respectively fixedly connected to the right part of the inner surface of the disc rod (442) and the right end of the piston on the piston push rod 2 (448), and the inner surfaces of the two hollow cylinders (444) are both penetrated and extended to the inner surface of the disc rod (442) and are fixedly connected with a connecting pipe (447).

5. A flexible circuit board welding device according to claim 4, characterized in that: The right end of the piston push rod 2 (448) is fixedly connected to an extrusion block 1 (4410), the right part of the inner surface of the shell (1) is fixedly connected to an extrusion block 2 (4411), the outer surface of the disc rod (442) is fixedly connected to a gear (4412), and the middle side of the right part of the inner surface of the shell (1) is fixedly connected to a rack (4413) meshing with the gear (4412).

6. A flexible circuit board welding device according to claim 2, characterized in that: The hair dryer mechanism (45) comprises a double-axis motor (451) fixedly connected to the left end of the outer shell (1); the left end of the outer shell (1) is fixedly connected to a circular hole cover (452); the inner surface of the circular hole cover (452) is rotatably connected to a transmission rod (453); the outer surface of the transmission rod (453) is located in the inner cavity of the circular hole cover (452) and is fixedly connected to a fan blade (455); the left output end of the double-axis motor (451) is fixedly connected to a rotating rod (456) via a coupling; the outer surface of the rotating rod (456) and the outer surface of the transmission rod (453) are fixedly connected to a belt pulley 2 (454).

7. A flexible circuit board welding device according to claim 6, characterized in that: The extension mechanism (46) comprises a hollow box (461) fixedly connected to the outer shell (1); a heating plate (462) is fixedly mounted on the inner surface of the hollow box (461); a plurality of blocking plates (463) are fixedly mounted on the inner surface of the hollow box (461) in a linearly equidistant and staggered manner; an air outlet pipe (464) is fixedly mounted on the upper portion of the inner surface of the hollow box (461) and extends to the inner surface of the outer shell (1); a circular hole plate (465) is fixedly mounted on the outer surface of the air outlet pipe (464); a connecting block (468) is fixedly mounted on the outer surface of the welding assembly (6); a hose (466) is fixedly mounted on the inner surface of the air outlet pipe (464) and extends to the lower end of the connecting block (468); a solenoid valve (467) is fixedly mounted at the intersection of the outer surfaces of the air outlet pipe (464) and the hose (466); and the hollow box (461) is connected to the circular hole cover (452) via a connecting pipe.

8. A flexible circuit board welding device according to claim 6, characterized in that: The smoothing assembly (5) comprises a guide block (51) fixedly connected to the upper inner surface of the shell (1); the left and right inner surfaces of the shell (1) are provided with a smoothing mechanism (52); and the right inner surface of the shell (1) is provided with a telescopic mechanism (53).

9. A flexible circuit board welding device according to claim 8, characterized in that: The smoothing mechanism (52) comprises a reciprocating rod (521) rotatably connected to the inner surface of the housing (1); the left end of the reciprocating rod (521) is fixedly connected to the right output end of the dual-axis motor (451) via a coupling; the inner surface of the housing (1) is located behind the reciprocating rod (521) and is fixedly connected to a limiting rod (522); the outer surfaces of the reciprocating rod (521) and the limiting rod (522) are slidably connected to a rectangular block (523); the inner surface of the rectangular block (523) is slidably connected to a round rod (524); the lower end of the round rod (524) is fixedly connected to an extrusion wheel 1 (525); the upper end of the round rod (524) is fixedly connected to an extrusion wheel 2 (526); the outer surface of the round rod (524) is sleeved with a reset spring 2 (527); the two ends of the reset spring 2 (527) are respectively fixedly connected to the lower end of the extrusion wheel 2 (526) and the upper end of the rectangular block (523).

10. A flexible circuit board welding device according to claim 9, characterized in that: The telescopic mechanism (53) comprises a spring telescopic rod (531) fixedly connected to the right part of the inner surface of the housing (1); the left end of the spring telescopic rod (531) is fixedly connected to a push plate (532); and the lower end of the rectangular block (523) is fixedly connected to an L-shaped plate (533).

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