Dry film filling device for FPC (Flexible Printed Circuit) multilayer board

Abstract

The utility model relates to the technical field of processing of flexible circuit boards, in particular to an FPC (flexible printed circuit) multilayer board dry film filling device which comprises a workbench, moving assemblies are mounted on two sides of the top end of the workbench, a support frame is mounted on the moving assemblies, a material frame is arranged in the support frame, a plurality of plug-in grooves are formed in the inner bottom end of the material frame, and the plug-in grooves are communicated with the workbench. A plurality of FPC multilayer boards are inserted into the material frame through inserting grooves, a plurality of liquid outlet holes are formed in the bottom end of the material frame, and a cleaning groove, a drying groove and a preheating groove are formed in the surface of the workbench. The design of the liquid outlet holes enables cleaning liquid to flow out smoothly in the cleaning process, the influence of residues on subsequent procedures is avoided, and the continuous arrangement of the cleaning tank, the drying tank and the preheating tank ensures that the FPC multilayer board reaches the optimal surface state before dry film filling.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible circuit board processing, in particular to a dry film filling device for FPC multi-layer boards. Background Art

[0002] With the rapid development of electronic technology, due to its characteristics such as high wiring assembly density, good bendability, light weight, and flexible process, FPC (flexible printed circuit board) has been widely used in fields such as consumer electronics, automotive electronics, medical equipment, aerospace, and industrial control. Especially in the field of new energy vehicles, FPC has become the main choice for most new models, and its applications in battery management systems (BMS), vehicle lighting systems, door control systems, and camera modules are particularly prominent.

[0003] After retrieval, the Chinese patent document application number: 202121314616.8 discloses a dry film filling device for high and low positions in the delamination area of an FPC multi-layer board, which solves the quality defects of open circuits and gaps at the drop area of the delamination area of high-difficulty multi-layer delamination boards and ensures the quality of products. The technical solution of this utility model is realized as follows: A dry film filling device for high and low positions in the delamination area of an FPC multi-layer board, which includes an upper film pressing roller, a lower film pressing roller, an FPC feeding module arranged in the front part between the upper film pressing roller and the lower film pressing roller, and an FPC rotating module arranged in the front part of the FPC feeding module. The FPC rotating module includes a chuck, a chuck mounting seat, and a lateral moving unit. The chuck is used to clamp one end of the FPC board, the chuck mounting seat is used to mount the chuck, and the lateral moving unit includes a lateral driving motor and a moving block. The chuck mounting seat is matched with the moving block.

[0004] However, the above dry film filling device for high and low positions in the delamination area of an FPC multi-layer board still has the following defects:

[0005] During the production process of this dry film filling device, due to incomplete cleaning, dust, oil stains, or other contaminants remaining on the FPC board surface may affect the adhesion effect between the dry film and the FPC board surface, thereby leading to the problem of open circuits. Therefore, we need a dry film filling device for FPC multi-layer boards to solve the above problems. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a dry film filling device for FPC multi-layer boards. Multiple FPC multi-layer boards can be fixed and processed simultaneously mainly through a plurality of insertion slots opened in the material frame, which not only improves the single processing capacity, but also ensures the relative position stability between each layer of boards, reduces the filling quality problems caused by position deviation. The design of the insertion slots facilitates the quick loading and unloading of FPC multi-layer boards, improving the operation convenience. The liquid outlet holes designed at the bottom end of the material frame enable the cleaning liquid to flow out smoothly during the cleaning process, avoiding the influence of residues on subsequent processes. The continuous setting of the cleaning tank, drying tank and preheating tank forms a complete pre-treatment process, ensuring that the FPC multi-layer boards reach the best surface state before dry film filling, improving the filling adhesion and overall quality.

[0007] To achieve the above purpose, the present utility model provides the following technical solutions: A dry film filling device for FPC multi-layer boards, including a workbench. On both sides of the top end of the workbench, moving components are installed. On the moving components, a support frame is installed. At the middle top end of the support frame, a first cylinder is installed. The piston rod end of the first cylinder passes through the support frame and is connected to a U-shaped frame. The bottom end of the U-shaped frame is connected to a material frame. A plurality of insertion slots are opened at the inner bottom end of the material frame. A plurality of FPC multi-layer boards are inserted into the material frame through the insertion slots. A plurality of liquid outlet holes are opened at the bottom end of the material frame. A cleaning tank, a drying tank and a preheating tank are respectively opened on the surface of the workbench. The material frame is installed above the surface of the workbench. A conveying frame is installed on one side of the workbench. A film pasting component is installed on the surface of the conveying frame.

[0008] Preferably, bolts are installed on both sides of the U-shaped frame. One end of the bolt threadedly passes through both sides of the U-shaped frame and is threadedly connected to the side wall of the material frame.

[0009] Preferably, the moving component includes a driving motor and a threaded rod. Moving slots are opened on both sides of the top end of the workbench. The output shaft of the driving motor is fixedly connected to one end of the threaded rod. The other end of the threaded rod passes through the side wall of one of the moving slots and is rotatably installed on the inner wall of one side of the moving slot. One end of the support frame is threadedly connected to the surface of the threaded rod.

[0010] Preferably, round rods are installed on the inner walls on both sides of the other moving slot. The other end of the support frame is slidably connected to the surface of the round rod.

[0011] Preferably, the film pasting component includes an installation frame, a second cylinder and a dry film layer. The bottom ends on both sides of the installation frame are fixedly installed on both sides of the conveying frame. The base of the second cylinder is fixedly installed at the inner top end of the installation frame. The piston rod end of the second cylinder is connected to the top end of the dry film layer. A belt conveyor is installed below the dry film layer. A plurality of placement platforms are installed on the belt conveyor. A pressing component is installed on one side of the installation frame.

[0012] Preferably, the pressing assembly includes an electric push rod, a pressing block, a film laminating roller and a rotating shaft. Two fixing blocks are installed on the side away from the mounting frame. The rotating shaft is installed inside the film laminating roller, and both ends of the rotating shaft are installed on the inner walls of both sides of the two fixing blocks. A pressing groove is formed on the inner wall of the fixing block. The pressing block is installed at the inner top end of the pressing groove. One end of the rotating shaft passes through the pressing groove and is fixedly connected to a rotating motor. The piston rod end of the electric push rod passes through the top end of the fixing block and is connected to the top end of the pressing block. The bottom end of the pressing block is clamped above one end of the rotating shaft. A buffer assembly is arranged below one end of the rotating shaft.

[0013] Preferably, the buffer assembly includes a limiting block and a return spring. The top end of the limiting block is clamped below one end of the rotating shaft. The lower part of the limiting block is fixedly connected to the top end of the return spring. The bottom end of the return spring is fixedly installed at the inner bottom end of the pressing groove.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. The present utility model mainly allows multiple FPC multilayer boards to be fixed and processed simultaneously through a plurality of insertion slots formed in the material frame, which not only improves the single - processing volume, but also ensures the relative position stability between each layer of boards, reduces the filling quality problems caused by position deviation. The design of the insertion slots facilitates the rapid loading and unloading of FPC multilayer boards, improves the operation convenience. The liquid outlet holes at the bottom end of the material frame enable the cleaning liquid to flow out smoothly during the cleaning process, avoiding the influence of residues on subsequent processes. The continuous arrangement of the cleaning tank, drying tank and preheating tank forms a complete pre - treatment process, ensuring that the FPC multilayer board reaches the best surface state before dry - film filling, improving the filling adhesion and overall quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three - dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is a side view of the three - dimensional of the present utility model;

[0018] Figure 3 is an enlarged structural schematic diagram of the material frame of the present utility model;

[0019] Figure 4 is an enlarged structural schematic diagram of the pressing assembly and the buffer assembly of the present utility model.

[0020] In the figure: 1, workbench; 2, driving motor; 201, threaded rod; 202, moving groove; 203, round rod; 3, support frame; 4, first cylinder; 5, U-shaped frame; 6, bolt; 7, material box; 8, FPC multi-layer board; 9, liquid outlet hole; 10, cleaning tank; 11, drying tank; 12, preheating tank; 13, conveying frame; 14, belt conveyor; 15, mounting frame; 16, second cylinder; 17, dry film layer; 18, placing table; 19, fixing block; 20, rotating motor; 21, electric push rod; 22, film laminating roller; 23, rotating shaft; 24, pressing block; 25, limiting block; 26, return spring; 27, pressing groove. Detailed implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-4 , the present invention provides a technical solution: an FPC multi-layer board dry film filling device, including a workbench 1, moving components are installed on both sides of the top end of the workbench 1, a support frame 3 is installed on the moving components, a first cylinder 4 is installed at the middle top end of the support frame 3, the piston rod end of the first cylinder 4 passes through the support frame 3 and is connected to a U-shaped frame 5, the bottom end of the U-shaped frame 5 is connected to a material box 7, a plurality of plug-in slots are opened at the inner bottom end of the material box 7, and a plurality of FPC multi-layer boards 8 are inserted into the material box 7 through the plug-in slots, a plurality of liquid outlet holes 9 are opened at the bottom end of the material box 7, a cleaning tank 10, a drying tank 11 and a preheating tank 12 are respectively opened on the surface of the workbench 1, the material box 7 is installed above the surface of the workbench 1, a conveying frame 13 is installed on one side of the workbench 1, and a film laminating component is installed on the surface of the conveying frame 13;

[0023] During use, a plurality of FPC multi-layer boards 8 can be fixed and processed simultaneously through the plurality of plug-in slots opened in the material box 7, which not only improves the single processing volume, but also ensures the relative position stability between the layers of the board, reducing the filling quality problems caused by position deviation. The design of the plug-in slots facilitates the rapid loading and unloading of the FPC multi-layer boards 8, improving the operation convenience. The design of the liquid outlet holes 9 at the bottom end of the material box 7 enables the cleaning liquid to flow out smoothly during the cleaning process, avoiding the influence of residues on subsequent processes. The continuous setting of the cleaning tank 10, the drying tank 11 and the preheating tank 12 forms a complete preprocessing process, ensuring that the FPC multi-layer board 8 reaches the best surface state before dry film filling, improving the filling adhesion and overall quality.

[0024] Bolts 6 are installed on both sides of the U-shaped frame 5. One end of the bolt 6 threadedly passes through both sides of the U-shaped frame 5 and is threadedly connected to the side wall of the material box 7. The threaded connection design makes the disassembly and assembly between the U-shaped frame 5 and the material box 7 simple and fast. When it is necessary to replace the material box 7, perform equipment maintenance, or adjust the processing process, simply loosen the bolt 6 to easily separate the two, greatly saving time and labor costs.

[0025] The moving component includes a driving motor 2 and a threaded rod 201. Moving grooves 202 are opened on both sides at the top of the workbench 1. The output shaft of the driving motor 2 is fixedly connected to one end of the threaded rod 201. The other end of the threaded rod 201 passes through the side wall of one of the moving grooves 202 and is rotatably installed on the inner wall of one side of the moving groove 202. One end of the support frame 3 is threadedly connected to the surface of the threaded rod 201. The threaded connection between the threaded rod 201 and the support frame 3 enables the position of the support frame 3 to be adjusted flexibly. By controlling the rotation direction and rotation speed of the driving motor 2, the position of the support frame 3 in the moving groove 202 can be accurately controlled.

[0026] Round rods 203 are installed on the inner walls of both sides of the other moving groove 202. The other end of the support frame 3 is slidably connected to the surface of the round rod 203. The round rod 203 serves as a sliding track, which can guide the support frame 3 to move along a predetermined straight track, helping to prevent the support frame 3 from shifting or deviating from the predetermined path during the movement, ensuring that the material box 7 can accurately align with each processing unit, such as the cleaning tank 10, the drying tank 11, and the preheating tank 12, etc.

[0027] The film laminating component includes a mounting frame 15, a second cylinder 16, and a dry film layer 17. The bottom ends on both sides of the mounting frame 15 are fixedly installed on both sides of the conveying frame 13. The base of the second cylinder 16 is fixedly installed at the inner top of the mounting frame 15. The piston rod end of the second cylinder 16 is connected to the top end of the dry film layer 17. A belt conveyor 14 is installed below the dry film layer 17. A plurality of placement platforms 18 are installed on the belt conveyor 14. A pressing component is installed on one side of the mounting frame 15. Driven by the second cylinder 16, the dry film layer 17 can automatically descend and adhere to the FPC multi-layer board 8 placed on the belt conveyor 14, which not only improves the production efficiency but also reduces the errors that may be brought by manual operation.

[0028] The pressing assembly includes an electric push rod 21, a pressing block 24, a film laminating roller 22 and a rotating shaft 23. Two fixing blocks 19 are installed on the side away from the mounting frame 15. The rotating shaft 23 is installed inside the film laminating roller 22, and both ends of the rotating shaft 23 are installed on the inner walls of both sides of the two fixing blocks 19. A pressing groove 27 is formed in the inner wall of the fixing block 19. The pressing block 24 is installed at the inner top end of the pressing groove 27. One end of the rotating shaft 23 passes through the pressing groove 27 and is fixedly connected to a rotating motor 20. The piston rod end of the electric push rod 21 passes through the top end of the fixing block 19 and is connected to the top end of the pressing block 24. The bottom end of the pressing block 24 is clamped with the upper part of one end of the rotating shaft 23. A buffer assembly is arranged below the lower part of one end of the rotating shaft 23. The pressing block 24 descends under the drive of the electric push rod 21 and cooperates with the clamping structure above the rotating shaft 23 to achieve uniform pressing on the film laminating roller 22, which helps to ensure that the dry film layer 17 can be evenly attached to the surface of the FPC multilayer board 8.

[0029] The buffer assembly includes a limit block 25 and a return spring 26. The top end of the limit block 25 is clamped with the lower part of one end of the rotating shaft 23. The lower part of the limit block 25 is fixedly connected to the top end of the return spring 26. The bottom end of the return spring 26 is fixedly installed at the inner bottom end of the pressing groove 27. When the pressing block 24 descends under the drive of the electric push rod 21 and presses the dry film layer 17, a certain impact force will be generated. The clamping design of the limit block 25 and the one end of the rotating shaft 23 and the buffering effect of the return spring 26 can absorb and disperse this part of the impact force, so as to protect the rotating shaft 23, the film laminating roller 22 and the FPC multilayer board 8 from direct impact and extend the service life of the equipment.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. FPC multi-layer board dry film filling device, including a workbench (1), characterized in that: On both sides of the top of the workbench (1), moving components are installed. A support frame (3) is installed on the moving components. At the middle top of the support frame (3), a first cylinder (4) is installed. The piston rod end of the first cylinder (4) passes through the support frame (3) and is connected to a U-shaped frame (5). The bottom end of the U-shaped frame (5) is connected to a material box (7). A plurality of insertion slots are formed at the inner bottom end of the material box (7). A plurality of FPC multilayer boards (8) are inserted into the material box (7) through the insertion slots. A plurality of liquid outlet holes (9) are formed at the bottom end of the material box (7). A cleaning tank (10), a drying tank (11) and a preheating tank (12) are respectively formed on the surface of the workbench (1). The material box (7) is installed above the surface of the workbench (1). A conveying frame (13) is installed on one side of the workbench (1). A film pasting component is installed on the surface of the conveying frame (13).

2. The FPC multi-layer board dry film filling device according to claim 1, wherein: Bolts (6) are installed on both sides of the U-shaped frame (5). One end of each bolt (6) threadedly passes through both sides of the U-shaped frame (5) and is threadedly connected to the side wall of the material box (7).

3. The FPC multi-layer board dry film filling device according to claim 2, characterized in that: The moving components include a driving motor (2) and a threaded rod (201). Moving slots (202) are formed on both sides of the top of the workbench (1). The output shaft of the driving motor (2) is fixedly connected to one end of the threaded rod (201). The other end of the threaded rod (201) passes through the side wall of one of the moving slots (202) and is rotatably installed on the inner wall of one side of the moving slot (202). One end of the support frame (3) is threadedly connected to the surface of the threaded rod (201).

4. The FPC multi-layer board dry film filling device according to claim 3, wherein: Round rods (203) are installed on the inner walls of both sides of the other moving slot (202). The other end of the support frame (3) is slidably connected to the surface of the round rod (203).

5. The FPC multi-layer board dry film filling device according to claim 4, wherein: The film pasting component includes a mounting frame (15), a second cylinder (16) and a dry film layer (17). The bottom ends of both sides of the mounting frame (15) are fixedly installed on both sides of the conveying frame (13). The base of the second cylinder (16) is fixedly installed at the inner top of the mounting frame (15). The piston rod end of the second cylinder (16) is connected to the top end of the dry film layer (17). A belt conveyor (14) is installed below the dry film layer (17). A plurality of placement platforms (18) are installed on the belt conveyor (14). A pressing component is installed on one side of the mounting frame (15).

6. The FPC multi-layer board dry film filling device according to claim 5, characterized in that: The pressing assembly includes an electric push rod (21), a pressing block (24), a film covering roller (22) and a rotating shaft (23). Two fixing blocks (19) are installed on one side away from the mounting bracket (15). The rotating shaft (23) is installed inside the film covering roller (22). Both ends of the rotating shaft (23) are installed on the inner walls of both sides of the two fixing blocks (19). A pressing groove (27) is formed in the inner wall of the fixing block (19). The pressing block (24) is installed at the inner top end of the pressing groove (27). One end of the rotating shaft (23) passes through the pressing groove (27) and is fixedly connected to a rotating motor (20). The piston rod end of the electric push rod (21) passes through the top end of the fixing block (19) and is connected to the top end of the pressing block (24). The bottom end of the pressing block (24) is clamped above one end of the rotating shaft (23). A buffer assembly is arranged below one end of the rotating shaft (23).

7. The FPC multi-layer board dry film filling device according to claim 6, characterized in that: The buffer assembly includes a limiting block (25) and a return spring (26). The top end of the limiting block (25) is clamped below one end of the rotating shaft (23). The lower part of the limiting block (25) is fixedly connected to the top end of the return spring (26). The bottom end of the return spring (26) is fixedly installed at the inner bottom end of the pressing groove (27).

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