Film coating device for flexible circuit board production
By using a dual-station design and synchronous belt drive in the flexible circuit board production lamination device, the problem of low production efficiency of single-station equipment was solved, achieving high-efficiency lamination production and improving the service life of the equipment and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI BAOKANG NEW MATERIALS CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-01
AI Technical Summary
Existing flexible circuit board laminating equipment uses a single-station structure, resulting in long production cycles, high idle rates, and an inability to achieve efficient production.
Design a flexible circuit board production lamination device, which adopts a dual-station structure and synchronous belt drive to realize the parallel execution of loading, hot pressing and cooling processes. Combined with a buffer component to absorb inertial impact, a pressure relief solenoid valve to prevent air bubbles, an ion fan to eliminate static electricity, and a distance sensor to prevent misoperation.
It significantly improves production efficiency, reduces equipment downtime, extends equipment lifespan, and enhances the pass rate and safety of coated products.
Smart Images
Figure CN224192151U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit board production and processing, and in particular to a flexible circuit board production coating device. Background Technology
[0002] Flexible printed circuit boards (FPCs), also known as flexible boards, are printed circuit boards made of flexible insulating substrates such as polyimide (PI) or polyester film. They have the characteristics of being able to be bent, folded and rolled freely, and are widely used in electronic devices that need to adapt to dynamic bending or space constraints.
[0003] The purpose of coating flexible circuit boards is to prevent circuits from breaking due to stress when bent or folded, improve the dynamic durability of flexible circuit boards, isolate conductive lines to avoid short circuits, enhance voltage resistance, or protect non-soldering areas in SMT assembly to prevent solder paste contamination or oxidation.
[0004] Currently, in the flexible printed circuit board (FPC) lamination process, traditional equipment generally adopts a single-station structure, that is, the loading, hot pressing, cooling and unloading processes are completed sequentially on the same mold. This design has the following technical drawbacks: In the single-station mode, the equipment needs to be stopped after the hot pressing process to wait for the mold to cool and for manual unloading, resulting in long production cycle time and high idle rate.
[0005] Therefore, it is necessary to design a film coating device for flexible circuit board production. Utility Model Content
[0006] In order to overcome the shortcomings of the existing technology, this utility model provides a flexible circuit board production coating device.
[0007] The technical solution is as follows: A flexible circuit board production laminating device includes a base, a mounting frame, a cylinder, a sliding plate, a hot press block, guide rods, a first mold, a second mold, a connecting frame, a guide rail, a synchronous belt, a pulley, a motor, and a buffer unit. The mounting frame is located on the upper part of the base, and a cylinder is installed inside the mounting frame. The piston rod of the cylinder slides through the lower part of the mounting frame. A sliding plate is located below the piston rod of the cylinder, and a hot press block is located below the sliding plate. Guide rods are symmetrically arranged in the middle of the upper part of the base, and the sliding plate is slidably connected to each guide rod. A [missing information - likely a device or component] is installed in the middle of the base. The guide rail has a connecting frame that slides on its upper part. Mold 1 and Mold 2 are respectively installed on both sides of the connecting frame. The connecting frame, mold 1 and mold 2 are combined to form a dual-station. A synchronous belt is rotatably installed inside the guide rail. A pulley is installed on the outside of the drive roller of the synchronous belt on the upper part of the base. The synchronous belt rotates between the two pulleys. The lower part of the connecting frame is fixedly connected to one side of the synchronous belt. A motor is installed on one side of the lower part of the base. The output shaft of the motor rotates through the inside of the base and is connected to the roller shaft of the pulley on one side. Buffer parts are provided at both ends of the base.
[0008] Optionally, it also includes a pressure relief solenoid valve, with pressure relief solenoid valves installed on both sides of the film-coating cavity at the top of mold one and mold two.
[0009] Optionally, the buffer part includes a mounting plate and a buffer screw. Both ends of the base are provided with upwardly bent mounting plates. The upper part of the mounting plate is threaded with a buffer screw. The end of the buffer screw is made of elastic material. The two molds are in sliding contact with the corresponding buffer screws on their respective exteriors.
[0010] Optionally, it also includes a sliding frame, a spring, a cover plate, and an ion fan. The two bases on the upper part of the base are equipped with sliding frames. The inner side of the sliding frame is provided with a guide groove, and a spring is provided in the guide groove. The guide groove of the sliding frame is slidably connected to the outside of the guide groove. The distance between mold one and mold two is the same as the distance between the cover plate and the sliding plate. The upper end of the spring is connected to the lower end of the cover plate. When the cover plates on both sides are pulled down, they contact and close with mold one and mold two respectively. An opening is opened on the upper part of the cover plate, and an ion fan is installed around the opening.
[0011] Optionally, it also includes a handle, with a protruding handle provided on the outside of the cover plate.
[0012] Optionally, it also includes a distance sensor, which is installed on the upper side of the inside of the cover.
[0013] 1. This utility model uses a connecting frame to fix mold one and mold two into a dual-station structure, and with the help of synchronous belt drive, it realizes automatic switching of the station, so that the loading, hot pressing and cooling processes can be executed in parallel, reducing the idle time of the equipment and significantly improving production efficiency; the motor output shaft drives the synchronous belt to move the connecting frame horizontally, and the dual guiding effect of the guide rail and guide rod ensures that the movement trajectory of mold one and mold two is not deviated; the buffer part absorbs inertial impact during mold switching to avoid hard collision damage to the mold, while the elastic end realizes flexible positioning of the mold and extends the service life of the equipment.
[0014] 2. This utility model achieves synchronous closure by ensuring that the spacing between mold one and mold two is consistent with the spacing between the cover plates. When the cover plates are pressed down, the spring of the sliding frame buffers the closure. The ion fan blows ionized airflow through the opening to eliminate static electricity on the circuit board surface, thereby improving the yield. The elastic end of the buffer screw can be adjusted by thread to extend its length, adapting to the positioning requirements of molds of different sizes. Moreover, the elastic material can absorb a large amount of impact energy, extending the service life of the molds.
[0015] 3. This utility model features a protruding handle on the outside of the cover plate for easy opening and closing by the operator; a distance sensor detects the closing status of the cover plate in real time, and if the status is not met, an alarm is triggered to stop the machine, effectively preventing safety accidents caused by misoperation.
[0016] 4. This utility model automatically opens the pressure relief solenoid valves on both sides of the coating cavity of mold one and mold two according to the feedback of their own pressure sensors, so as to discharge gas during the hot pressing process and prevent pressure overload, avoid defects such as bubbles or wrinkles, and improve the qualification rate of coated products. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0018] Figure 2 This is a structural schematic diagram of the base, mounting frame, cylinder, and other components of this utility model.
[0019] Figure 3 This is a structural schematic diagram of the mold 1, mold 2, and connecting frame components of this utility model.
[0020] Figure 4 This is a structural diagram of the guide rail, timing belt, and pulley components of this utility model.
[0021] Figure 5 This is a structural schematic diagram of the sliding frame, spring, and cover plate of this utility model.
[0022] Figure 6 This is a structural schematic diagram of the ion fan, grip, and distance sensor components of this utility model.
[0023] The components in the attached diagram are labeled as follows: 1. Base, 2. Mounting frame, 3. Cylinder, 31. Slide plate, 4. Hot press block, 5. Guide rod, 6. Mold 1, 61. Mold 2, 62. Pressure relief solenoid valve, 7. Connecting frame, 8. Guide rail, 9. Synchronous belt, 10. Pulley, 11. Motor, 12. Mounting plate, 13. Buffer screw, 14. Sliding frame, 15. Spring, 16. Cover plate, 17. Ionizing fan, 18. Handle, 19. Distance sensor. Detailed Implementation
[0024] The embodiments of this utility model will be described below with reference to the accompanying drawings.
[0025] Example: A lamination apparatus for flexible circuit board production, such as... Figures 1-4As shown, the device includes a base 1, a mounting frame 2, a cylinder 3, a sliding plate 31, a hot press block 4, a guide rod 5, a first mold 6, a second mold 61, a connecting frame 7, a guide rail 8, a synchronous belt 9, a pulley 10, a motor 11, and a buffer section. The base 1 serves as the basic support platform for the device, bearing all functional modules and ensuring structural stability. The mounting frame 2 is located on the upper part of the base 1, and the cylinder 3 is installed inside the mounting frame 2. The piston rod of the cylinder 3 slides through the lower part of the mounting frame 2. The sliding plate 31 is located below the piston rod of the cylinder 3, and the hot press block 4 is located below the sliding plate 31. The sliding plate 31 slides along the guide rod 5 to transmit power from the cylinder 3. The hot press block 4 provides heating and pressure. Guide rods 5 are symmetrically arranged in the middle of the upper part of the base 1. The sliding plate 31 is slidably connected to each guide rod 5 to guide the vertical movement trajectory of the sliding plate 31 and prevent deviation. The guide rail 8 is installed in the middle of the base 1, and the connecting frame 7 is slidably arranged on the upper part of the guide rail 8. The first mold 6 is installed on both sides of the connecting frame 7. The connection frame 7, mold 1 6, and mold 2 61 together form a dual-station system. Mold 1 6 and mold 2 61 alternately enter the hot pressing station to achieve continuous production. The connection frame 7 fixes the two molds and moves horizontally along the guide rail 8. The guide rail 8 provides a sliding track to ensure the linear motion accuracy of switching between mold 1 6 and mold 2 61 and reduce frictional resistance. A synchronous belt 9 is rotatably installed on the inner side of the guide rail 8. A pulley 10 is installed on the outer side of the drive roller of the synchronous belt 9 on the upper part of the base 1. The synchronous belt 9 rotates between the two pulleys 10. The lower part of the connection frame 7 is fixedly connected to one side of the synchronous belt 9. A motor 11 is installed on one side of the lower part of the base 1. The output shaft of the motor 11 rotates through the inside of the base 1 and is connected to the roller shaft of the pulley 10 on one side. The synchronous belt 9 drives the connection frame 7 to move, and the motor 11 provides rotational power. The precise switching between the two stations is achieved through the transmission of the synchronous belt 9. The speed of the motor 11 is adjusted to control the movement speed. Buffer parts are provided at both ends of the base 1.
[0026] like Figure 1 and Figure 3 As shown, it also includes a pressure relief solenoid valve 62. Both sides of the film coating cavity on the upper part of mold 1 6 and mold 2 61 are equipped with pressure relief solenoid valves 62. The pressure relief solenoid valve 62 automatically opens according to the feedback of its own pressure sensor to discharge the gas in the film coating cavity, avoid the generation of air bubbles, and ensure the uniformity of film bonding.
[0027] like Figure 1 As shown in the figure, the buffer part includes a mounting plate 12 and a buffer screw 13. Both ends of the base 1 are provided with upwardly bent mounting plates 12. The upper part of the mounting plate 12 is threaded through the buffer screw 13. The end of the buffer screw 13 is made of elastic material. The two molds 61 are in sliding contact with the corresponding buffer screw 13. The end of the buffer screw 13 absorbs energy through the deformation of elastic material such as rubber, and its positioning accuracy is adjusted by the thread.
[0028] like Figure 5 and Figure 6As shown, it also includes a sliding frame 14, a spring 15, a cover plate 16, and an ion fan 17. The two bases on the upper part of the base 1 are each equipped with a sliding frame 14. A guide groove is opened on the inner side of the sliding frame 14, and a spring 15 is installed in the guide groove. The cover plate 16 is slidably connected to the outside of the guide groove of the sliding frame 14. The distance between mold 1 6 and mold 2 61 is the same as the distance between the cover plate 16 and the slide plate 31. The upper end of the spring 15 is connected to the lower end of the cover plate 16. When the cover plates 16 on both sides are pulled down, they contact and close with mold 1 6 and mold 2 61 respectively. An opening is opened on the upper part of the cover plate 16, and an ion fan 17 is installed around the opening. The spring 15 buffers the impact of the closing of the cover plate 16, and the ion fan 17 blows ionized airflow to prevent dust adsorption.
[0029] like Figure 5 and Figure 6 As shown, it also includes a handle 18. The cover plate 16 is fixed to the outside of the cover plate 16 by bolts. The handle 18 makes it easy to manually pull down the cover plate 16.
[0030] like Figure 6 As shown, it also includes a distance sensor 19. The distance sensor 19 is installed on the upper side of the cover plate 16 by a snap fastener. The distance sensor 19 triggers an alarm to prevent thermal pressure when the cover is not closed.
[0031] Before lamination, the operator places two flexible circuit boards on the surfaces of mold 1 (6) and mold 2 (61) respectively, and simultaneously fills the lamination cavities of both molds with film material. Mold 1 (6) and mold 2 (61) are fixed as a whole dual-station structure by connecting frame 7. The distance between them is consistent with the distance between the cover plate 16 to ensure subsequent alignment upon closure. After starting the equipment, motor 11 drives pulley 10 to rotate synchronous belt 9. Since the lower part of connecting frame 7 is fixed to one side of synchronous belt 9, the movement of synchronous belt 9 pushes connecting frame 7 to move horizontally along guide rail 8, so that mold 1 (6) and mold 2 (61) simultaneously enter the hot pressing station in the center of base 1. In the initial state, mold 1 (6) is in the hot pressing position. In the pressing station, mold 2 61 is located in the outer processing area, and both can be loaded simultaneously. After mold 1 6 is loaded, motor 11 starts, and synchronous belt 9 drives connecting frame 7 to move, causing mold 2 61 to enter the hot pressing station. When mold 1 6 moves to the outer side and connecting frame 7 moves to its end point, the buffer parts (elastic buffer screws 13) at both ends of base 1 contact mold 2 61. The elastic material at the end of the screw absorbs the inertial impact, and the threaded adjustment screw extension length ensures accurate mold positioning. After mold 2 61 is in place, cylinder 3 pushes slide plate 31 vertically downward along symmetrically arranged guide rods 5. The guiding effect of guide rods 5 ensures the movement of slide plate 31. Without deviation, the hot pressing block 4 at the bottom of the slide plate 31 contacts the surface of the mold 61, and is heated to the set temperature by the built-in heating element and a constant pressure is applied to melt and bond the film to the circuit board. During the hot pressing process, the pressure relief solenoid valves 62 on both sides of the film coating cavity of the mold 61 automatically open according to the feedback of their auxiliary pressure sensors to release the gas in the cavity and avoid the generation of air bubbles. If the pressure exceeds the threshold, the solenoid valve continuously releases pressure in a pulse manner to ensure the uniformity of film coating. When the circuit board is in the processing area of any mold, the operator pulls down the two side cover plates 16 by holding the handle 18. The cover plates 16 move down along the guide groove of the sliding frame 14, and the spring 15 is compressed to provide a buffer force. When the cover plate 16 is fully closed, the distance sensor 19 on its inner side detects the closure status. If the status is not met, an alarm is triggered and hot pressing is paused. After the cover plate 16 is closed, the ion fan 17 blows ionized airflow into the mold area through the opening to eliminate static electricity on the circuit board surface and prevent dust adsorption. After the second mold 61 completes hot pressing, the cylinder 3 drives the hot pressing block 4 to reset, and the synchronous belt 9 rotates in the opposite direction to move the first mold 6 back to the hot pressing station. The second mold 61 then retreats to the outside for cooling (cooling to below 50°C) and part removal. At this time, the operator can unload the second mold 61 and refill it, while the first mold 6 enters a new round of hot pressing process, realizing seamless connection between the two stations.
[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A flexible circuit board production coating apparatus, comprising a base (1) and a mounting frame (2), wherein the mounting frame (2) is provided on the upper part of the base (1), characterized in that, It also includes a cylinder (3), a slide plate (31), a hot press block (4), a guide rod (5), a mold one (6), a mold two (61), a connecting frame (7), a guide rail (8), a synchronous belt (9), a pulley (10), a motor (11), and a buffer. The cylinder (3) is installed inside the mounting frame (2). The piston rod of the cylinder (3) slides through the lower part of the mounting frame (2). A slide plate (31) is provided below the piston rod of the cylinder (3). A hot press block (4) is provided below the slide plate (31). Guide rods (5) are symmetrically arranged in the middle of the upper part of the base (1). The slide plate (31) is slidably connected to each guide rod (5). A guide rail (8) is installed in the middle of the base (1). A sliding block (4) is provided on the upper part of the guide rail (8). The connecting frame (7) has mold 1 (6) and mold 2 (61) installed on both sides. The connecting frame (7), mold 1 (6) and mold 2 (61) are combined to form a double station. The guide rail (8) is rotatably equipped with a synchronous belt (9). The upper part of the base (1) is equipped with a pulley (10) on the outside of the drive roller of the synchronous belt (9). The synchronous belt (9) is rotated between the two pulleys (10). The lower part of the connecting frame (7) is fixedly connected to one side of the synchronous belt (9). A motor (11) is installed on one side of the lower part of the base (1). The output shaft of the motor (11) rotates through the inside of the base (1) and is connected to the roller shaft of the pulley (10) on one side. The base (1) has buffer parts at both ends.
2. The flexible circuit board production coating apparatus according to claim 1, characterized in that, It also includes a pressure relief solenoid valve (62), and pressure relief solenoid valves (62) are installed on both sides of the film covering cavity at the top of mold one (6) and mold two (61).
3. The flexible circuit board production coating apparatus according to claim 2, characterized in that, The buffer part includes a mounting plate (12) and a buffer screw (13). Both ends of the base (1) are provided with an upwardly bent mounting plate (12). The upper part of the mounting plate (12) is threaded through and the buffer screw (13) is provided. The end of the buffer screw (13) is made of elastic material. The two molds (61) are in sliding contact with the corresponding buffer screw (13) on the outside.
4. The flexible circuit board production coating apparatus according to claim 3, characterized in that, It also includes a sliding frame (14), a spring (15), a cover plate (16) and an ion fan (17). The two bases on the upper part of the base (1) are equipped with sliding frames (14). The inner side of the sliding frame (14) is provided with a guide groove, and the spring (15) is provided in the guide groove. The cover plate (16) is slidably connected to the outside of the guide groove of the sliding frame (14). The distance between mold one (6) and mold two (61) is the same as the distance between the cover plate (16) and the slide plate (31). The upper end of the spring (15) is connected to the lower end of the cover plate (16). When the cover plates (16) on both sides are pulled down, they contact and close with mold one (6) and mold two (61) respectively. An opening is opened on the upper part of the cover plate (16), and the ion fan (17) is installed around the opening.
5. The flexible circuit board production coating apparatus according to claim 4, characterized in that, It also includes a handle (18), and the cover plate (16) is provided with a protruding handle (18).
6. The flexible circuit board production coating apparatus according to claim 5, characterized in that, It also includes a distance sensor (19), which is installed on the upper side of the cover plate (16).