A curing conveyor for producing a tinned flexible wiring board

Abstract

The utility model belongs to the technical field of circuit board production equipment, and disclose a kind of solidification conveying device for tinned flexible circuit board production, including conveyer frame, the heating box is fixed in conveyer frame top, the solidification lamp plate is fixed in heating box inboard, the linear array is fixed in several micro fans in heating box inboard top portion. The utility model is through air scoop, driving block, sliding block, exhaust fan, air outlet plate head and flexible plate piece etc. Structure cooperation, make air outlet plate head follow the synchronous movement of the conveying speed of circuit board, and the hot air force in air scoop is exported by air outlet plate head by exhaust fan, to realize the synchronous solidification when circuit board conveying, and flexible plate piece on the both sides of sliding block is flexible sealing between air scoop and sliding block, effectively guarantee the stable conveying of hot air force, follow the stable solidification of the conveying of circuit board, improve the heat transfer effect when solidification conveying, guarantee the stability of solidification conveying.

Description

Technical Field

[0001] This utility model belongs to the technical field of circuit board production equipment, specifically a curing and conveying device for the production of tin-plated flexible circuit boards. Background Technology

[0002] Tin-plated flexible circuit boards are electronic interconnect components in which a layer of tin is deposited on the surface of the copper foil circuit of a flexible printed circuit board through electroplating or chemical plating. They combine the flexibility of the flexible substrate with the advantages of tin plating, such as oxidation resistance and easy soldering.

[0003] The curing and conveying process of tin-plated flexible circuit boards involves temperature control and stable conveying to ensure that the cover film adhesive layer or solder resist ink completes cross-linking and curing. At the same time, it ensures that the tin plating layer is not oxidized and the FPC flexible substrate does not deform, ultimately improving the insulation, adhesion and bending resistance of the circuit board.

[0004] In the existing technology, the curing and conveying of circuit boards involves placing the circuit board on a conveying device and allowing it to pass through the curing device to achieve the curing operation. However, during thermal curing, due to the temperature fluctuations in the conveying channel, i.e., the large temperature difference at the junction of the inlet and outlet, the circuit board needs to travel a certain conveying distance after entering the curing device to allow the surface to adapt to the temperature change as a whole. This makes it difficult for the curing layer to receive heat in a timely manner during the conveying process, resulting in poor curing and conveying effects. In view of this, a curing and conveying device for the production of tin-plated flexible circuit boards is proposed to solve the above problems. Summary of the Invention

[0005] To address the problems mentioned in the background art, this utility model provides a curing and conveying device for the production of tin-plated flexible circuit boards.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a curing conveyor for producing tin-plated flexible circuit boards, comprising a conveyor belt frame, a heating box fixedly mounted on the top of the conveyor belt frame, a curing lamp plate fixedly mounted inside the heating box, a plurality of miniature fans fixedly mounted in a linear array on the top of the top of the top of the top of the top of the heating box, an air guide hopper fixedly mounted inside the heating box below the curing lamp plate, a motor fixedly mounted on the outside of the heating box, a threaded column fixedly mounted at the output end of the motor, one end of the threaded column being rotatably connected to the inside of the heating box, a driving block being rotatably connected to the outside of the threaded column, a slider fixedly mounted at the bottom of the driving block, the slider being horizontally slidably connected to the inside of the air guide hopper, an exhaust fan symmetrically fixedly mounted on the top of the outside of the slider, an air outlet head fixedly mounted at the bottom of the slider, the air outlet head being connected to the exhaust fan, telescopic plates symmetrically fixedly mounted on both sides of the slider, and the other ends of the telescopic plates on both sides being fixedly connected to the two ends of the inside of the air guide hopper.

[0007] Preferably, a limiting groove is provided on the lower inner side of the air guide hopper, and limiting protrusions are symmetrically fixed on both sides of the slider, with the limiting protrusions slidably connected to the inner side of the limiting groove.

[0008] Preferably, the top of the heating box has several ventilation slots, and the outer side of the curing lamp plate has several air supply slots, with the ventilation slots and air supply slots corresponding to the micro fans.

[0009] Preferably, the telescopic plate is slidably arranged from multiple stretch plates, and the width of each stretch plate is greater than the width of the limiting groove.

[0010] Preferably, the top of the slider is symmetrically fixed with a bonding plate, which is fitted to the inner side of the air guide hopper.

[0011] Preferably, the air guide hopper is arranged in a conical structure and is arranged in an inverted conical shape inside the heating box.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes a combination of components such as an air guide hopper, a drive block, a slider, an exhaust fan, an air outlet head, and telescopic plates to enable the air outlet head to move synchronously with the conveying speed of the circuit board. The exhaust fan then outputs the hot air from the air guide hopper through the air outlet head, achieving synchronous curing of the circuit board during transport. Simultaneously, the telescopic plates on both sides of the slider provide a flexible seal between the air guide hopper and the slider, effectively ensuring a stable delivery of hot air. By ensuring the circuit board is transported and cured stably, the heat transfer effect during curing is improved, guaranteeing the stability of the curing process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the orthographic section of the heating box of this utility model; Figure 3 This is a side sectional view of the air guide hopper of this utility model; Figure 4 This is a schematic cross-sectional view of the air guide hopper of this utility model; Figure 5 This is a schematic diagram of the air outlet head structure of this utility model.

[0014] In the diagram: 1. Conveyor belt frame; 11. Heating box; 12. Curing lamp board; 13. Miniature fan; 14. Air guide hopper; 15. Motor; 16. Threaded column; 17. Drive block; 18. Slider; 19. Exhaust fan; 101. Air outlet head; 102. Telescopic plate; 2. Limiting groove; 21. Limiting protrusion; 23. Adhesive plate; 3. Ventilation slot; 31. Air outlet. Detailed Implementation

[0015] 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.

[0016] like Figures 1 to 5 As shown, this utility model provides a curing conveyor device for the production of tin-plated flexible circuit boards, including a conveyor belt frame 1, a heating box 11 fixedly mounted on the top of the conveyor belt frame 1, a curing lamp plate 12 fixedly mounted inside the heating box 11, a plurality of miniature fans 13 linearly arrayed and fixedly mounted on the top of the inner side of the heating box 11, an air guide hopper 14 fixedly mounted inside the heating box 11 below the curing lamp plate 12, a motor 15 fixedly mounted on the outer side of the heating box 11, and a threaded post 16 fixedly mounted at the output end of the motor 15, one end of the threaded post 16 rotating. Connected to the inner side of the heating box 11, a drive block 17 is rotatably connected to the outer side of the threaded column 16. A slider 18 is fixedly provided at the bottom of the drive block 17. The slider 18 is horizontally slidably connected to the inner side of the air guide hopper 14. An exhaust fan 19 is symmetrically fixedly provided at the top of the outer side of the slider 18. An air outlet head 101 is fixedly provided at the bottom of the slider 18. The air outlet head 101 is connected to the exhaust fan 19. Telescopic plates 102 are symmetrically fixedly provided on both sides of the slider 18. The other end of each telescopic plate 102 is fixedly connected to both ends of the inner side of the air guide hopper 14.

[0017] During operation, the tin-plated flexible circuit board enters the heating chamber 11 at a slow, constant speed along the conveyor belt on the conveyor belt frame 1. During this process, the curing lamp board 12 inside the heating chamber 11 activates, generating heat that is transferred within the chamber. Simultaneously, several miniature fans 13 on the top of the heating chamber 11 activate synchronously, generating airflow that blows downwards from below the curing lamp board 12, carrying the heat with it. The airflow is then directed downwards into the air guide hopper 14 by the air guide hopper 14's concentrating effect. At this point... Hot air is collected by the exhaust fan 19 on the slider 18 and discharged through the air outlet 101 below the slider 18. Initially, the slider 18 is positioned near one end of the air guide hopper 14, and the telescopic plate 102 between the air guide hoppers 14 is compressed and stored, while the telescopic plate 102 on the other side is pulled open. As the conveyor belt carries the circuit board into the heating chamber 11, the motor 15 is started at the same time. The output end of the motor 15 drives the threaded column 16 to rotate inside the heating chamber 11. The threaded column 16 drives... The drive block 17 connected to the outside moves horizontally, driving the bottom slider 18 to slide synchronously along the inner side of the air guide hopper 14. The sliding speed is synchronized with the running speed of the conveyor belt. When the slider 18 moves, the exhaust fan 19 at its top starts, drawing in the hot airflow from the upper air guide hopper 14 and discharging it through the air outlet 101 connected to the bottom of the slider 18. This acts on the surface of the circuit board being transported on the synchronously running conveyor belt below, thus enabling a follow-up hot airflow curing operation on the circuit board surface. When a circuit board is transported out of the heating box 11, the drive block 17 is driven to slide in the opposite direction by the motor 15, thereby driving the slider 18 to reset, facilitating the follow-up curing operation of the next circuit board. During the reciprocating sliding of the slider 18, the telescopic plates 102 on both sides stretch or contract with the movement of the slider 18, always sealing the gap between the inner side of the air guide hopper 14 and the slider 18, preventing the hot airflow from leaking out, ensuring the stability of heat transfer in the curing environment, and further ensuring the follow-up curing effect of the circuit board.

[0018] like Figure 4 and Figure 5 As shown, a limiting groove 2 is provided on the lower inner side of the air guide hopper 14. Limiting protrusions 21 are symmetrically fixed on both sides of the slider 18. The limiting protrusions 21 are slidably connected to the inner side of the limiting groove 2. When the slider 18 moves horizontally inside the air guide hopper 14, the limiting protrusions 21 on both sides are embedded in the limiting groove 2 on the lower inner side of the air guide hopper 14 and slide synchronously along the limiting groove 2 with the slider 18. Through the cooperation of the limiting protrusions 21 and the limiting groove 2, the movement trajectory of the slider 18 is restricted to ensure that the slider 18 drives the air outlet head 101 and the exhaust fan 19 to move stably in the horizontal direction.

[0019] like Figure 2As shown, the top of the heating box 11 has several ventilation slots 3, and the outer side of the curing lamp plate 12 has several air supply slots 31. The ventilation slots 3 and air supply slots 31 are opened corresponding to the miniature fan 13.

[0020] After the micro fan 13 is started, the wind generated passes through the air outlet 31 on the outside of the curing lamp plate 12, thereby driving the heat generated by the curing lamp plate 12 to concentrate into the air guide hopper 14 for wind gathering. The ventilation slot 3 on the top of the heating box 11 provides a space channel for the circulation of wind, ensuring the smooth flow of wind gas.

[0021] like Figures 2 to 3 As shown, the telescopic plate 102 is composed of multiple stretch plates that slide together, and the width of each stretch plate is greater than the width of the limiting groove 2. The telescopic plate 102 is composed of multiple stretch plates that slide and nest together, and it stretches or contracts as the slider 18 moves horizontally. Since the width of each stretch plate is greater than the width of the limiting groove 2, the stretch plate can completely cover the area above the limiting groove 2 during the telescopic process, avoiding gap exposure, thereby sealing and retaining the hot air in the air guide hopper 14 and ensuring stable heat.

[0022] like Figures 4 to 5 As shown, a bonding plate 22 is symmetrically fixed on the top of the slider 18, and the bonding plate 22 is set to fit against the inner side of the air guide hopper 14. The bonding plate 22 symmetrically fixed on the top of the slider 18 fits tightly against the inner side of the air guide hopper 14. When the slider 18 moves along the air guide hopper 14, the bonding plate 22 moves synchronously with the slider 18 and always remains in contact with the inner side of the air guide hopper 14, filling the gap between the top of the slider 18 and the inner side of the air guide hopper 14. The bonding plate 22 enhances the sealing between the slider 18 and the air guide hopper 14, and further prevents hot gas from leaking from the gap at the top of the slider 18.

[0023] like Figure 4 As shown, the air guide 14 is set in a conical structure and is set in an inverted cone shape inside the heating box 11. The air guide 14 is fixed inside the heating box 11 with an inverted cone structure. The airflow introduced by the micro fan 13 is guided through the inner wall of the inverted cone air guide 14 and converges from the wide opening at the top to the narrow opening at the bottom, so that the airflow is concentrated and collected. At the same time, the inverted cone structure can help guide the hot airflow to gather in the direction of the slider 18 and the air outlet 101.

[0024] Working principle and usage process of this utility model: During operation, the tin-plated flexible circuit board enters the heating chamber 11 at a slow, constant speed along the conveyor belt on the conveyor belt frame 1. During this process, the curing lamp board 12 inside the heating chamber 11 activates, generating heat that is transferred within the chamber. Simultaneously, several miniature fans 13 on the top of the heating chamber 11 activate synchronously, generating airflow that blows downwards from below the curing lamp board 12, carrying heat with it downwards into the air guide hopper 14. The airflow is then guided to the bottom of the air guide hopper 14 by the concentrating effect of the air guide hopper 14. At this point, the exhaust fan 19 on the slider 18 collects the hot air and discharges it through the exhaust fan head 101 below the slider 18. Initially, the slider 18 is positioned near one end of the air guide hopper 14, and the airflow between the air guide hoppers 14... The telescopic plate 102 is compressed and stored, while the other telescopic plate 102 is pulled open. As the conveyor belt carries the circuit board into the heating box 11, the motor 15 is started at the same time. The output end of the motor 15 drives the threaded column 16 to rotate inside the heating box 11. The threaded column 16 drives the drive block 17 connected to the outside to move horizontally. The drive block 17 drives the bottom slider 18 to slide synchronously along the inside of the air guide hopper 14, and the sliding speed is synchronized with the running speed of the conveyor belt. When the slider 18 moves, the exhaust fan 19 at its top starts, drawing in the hot air from the upper air guide hopper 14 and discharging it through the air outlet head 101 connected to the bottom of the slider 18. This acts on the surface of the circuit board being conveyed on the synchronously running conveyor belt below, thereby enabling the circuit board surface to be followed. The hot airflow curing process involves conveying a hot airflow through the heating chamber 11. When a circuit board is conveyed out of the heating chamber 11, the motor 15 drives the drive block 17 to slide in the reverse direction, thereby resetting the slider 18 to facilitate the curing of the next circuit board. During the reciprocating sliding of the slider 18, the telescopic plates 102 on both sides stretch or contract with the slider 18, always sealing the gap between the inner side of the air guide 14 and the slider 18 to prevent hot airflow leakage and ensure the stability of heat transfer in the curing environment. This further ensures the curing effect of the circuit board. When the slider 18 moves horizontally inside the air guide 14, the limiting protrusions 21 on both sides are embedded in the limiting grooves 2 below the inner side of the air guide 14, sliding synchronously with the slider 18 along the limiting grooves 2. The cooperation between the limiting protrusion 21 and the limiting groove 2 restricts the movement trajectory of the slider 18, ensuring that the slider 18 drives the air outlet head 101 and the exhaust fan 19 to move stably in the horizontal direction. After the micro fan 13 is started, the generated wind passes through the air inlet 31 corresponding to the outer side of the curing lamp plate 12, thereby driving the heat generated by the curing lamp plate 12 to concentrate into the air guide hopper 14 for wind gathering. The ventilation slot 3 corresponding to the top of the heating box 11 provides a space channel for the circulation of wind, ensuring the smooth flow of wind and gas. The telescopic plate 102 is composed of multiple sections of stretching plates that slide and nest together. It stretches or contracts with the horizontal movement of the slider 18. Since the width of each stretching plate is greater than the width of the limiting groove 2, during the extension and contraction process,The stretching plate completely covers the area above the limiting groove 2, preventing gap exposure and thus sealing and retaining the hot air in the air guide hopper 14, ensuring stable heat. The symmetrically fixed bonding plates 22 on the top of the slider 18 are tightly fitted to the inner side of the air guide hopper 14. When the slider 18 moves along the air guide hopper 14, the bonding plates 22 move synchronously with the slider 18, always maintaining a close fit with the inner side of the air guide hopper 14, filling the gap between the top of the slider 18 and the inner side of the air guide hopper 14. The bonding plates 22 enhance the sealing between the slider 18 and the air guide hopper 14, further preventing hot gas leakage from the gap at the top of the slider 18. The air guide hopper 14 adopts an inverted conical structure fixed inside the heating box 11. The airflow introduced by the micro fan 13 is guided through the inner wall of the inverted conical air guide hopper 14, converging from the wide opening at the top to the narrow opening at the bottom, concentrating the airflow. Simultaneously, the inverted conical structure helps guide the hot airflow towards the slider 18 and the air outlet head 101.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A curing and conveying device for producing tin-plated flexible circuit boards, comprising a conveyor belt frame (1), characterized in that: A heating box (11) is fixedly installed on the top of the conveyor belt frame (1). A curing lamp plate (12) is fixedly installed inside the heating box (11). Several miniature fans (13) are fixedly arranged in a linear array on the top of the inner side of the heating box (11). An air guide hopper (14) is fixedly installed below the curing lamp plate (12) inside the heating box (11). A motor (15) is fixedly installed on the outer side of the heating box (11). A threaded post (16) is fixedly installed at the output end of the motor (15). One end of the threaded post (16) is rotatably connected to the inner side of the heating box (11). A drive block (17) is rotatably connected to the outside. A slider (18) is fixedly provided at the bottom of the drive block (17). The slider (18) is horizontally slidably connected to the inside of the air guide hopper (14). An exhaust fan (19) is symmetrically fixed at the top of the outside of the slider (18). An air outlet head (101) is fixedly provided at the bottom of the slider (18). The air outlet head (101) is connected to the exhaust fan (19). Telescopic plates (102) are symmetrically fixed on both sides of the slider (18). The other ends of the telescopic plates (102) on both sides are fixedly connected to the two ends of the inside of the air guide hopper (14).

2. The curing and conveying device for producing tin-plated flexible circuit boards according to claim 1, characterized in that: A limiting groove (2) is provided on the lower inner side of the air guide hopper (14), and limiting protrusions (21) are symmetrically fixed on both sides of the slider (18). The limiting protrusions (21) are slidably connected to the inner side of the limiting groove (2).

3. The curing and conveying device for producing tin-plated flexible circuit boards according to claim 1, characterized in that: The heating box (11) has several ventilation slots (3) on the top, and the curing lamp plate (12) has several air outlets (31) on the outside. The ventilation slots (3) and air outlets (31) are opened in relation to the miniature fan (13).

4. The curing and conveying device for producing tin-plated flexible circuit boards according to claim 1, characterized in that: The telescopic plate (102) is slidably arranged by multiple stretch plates, and the width of each stretch plate is greater than the width of the limiting groove (2).

5. The curing and conveying device for producing tin-plated flexible circuit boards according to claim 2, characterized in that: The top of the slider (18) is symmetrically fixed with a bonding plate (22), which is attached to the inner side of the air guide hopper (14).

6. The curing and conveying device for producing tin-plated flexible circuit boards according to claim 5, characterized in that: The air guide hopper (14) is arranged in a conical structure and is arranged in an inverted cone shape inside the heating box (11).

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