A laminating fixture for FPC high-temperature resistant cover film

Abstract

This invention discloses a laminating fixture for high-temperature resistant FPC cover films, relating to the field of FPC high-temperature resistant cover film lamination technology. It includes a first laminating roller and a tensioning frame. A second laminating roller is arranged parallel to each other below the first laminating roller, and adjusting frames are connected and installed on the left and right sides of the first and second laminating rollers. The tensioning frame is located at the upper end of one side and the lower end of the other side of the adjusting frame. This laminating fixture, through the cooperation of the first laminating roller, the second laminating roller, the adjusting frame, and the tensioning frame, can flexibly adjust the distance between the two laminating rollers according to the different thicknesses of the FPC high-temperature resistant cover films and the substrate material. Simultaneously, it can tension and position the cover film during transport, avoiding displacement and wrinkling during lamination, ensuring a tight bond between the laminated cover film and the FPC substrate, and improving the yield and processing efficiency of the lamination process.

Description

Technical Field

[0001] This invention relates to the field of FPC high-temperature resistant cover film lamination technology, specifically to a lamination and bonding tooling for FPC high-temperature resistant cover film. Background Technology

[0002] In today's rapidly developing electronics industry, flexible printed circuit boards (FPCs) are widely used in portable electronic devices due to their lightweight and bendable properties. However, traditional FPC materials suffer from insufficient performance stability in high-temperature environments and complex chemical environments (such as highly corrosive CAF environments), which limits their application under certain extreme conditions. This leads to the development of material structure design for high-temperature resistant cover films for FPCs.

[0003] FPC high-temperature resistant cover film is a protective material specifically designed for flexible printed circuit boards (FPCs). Its main functions are to protect circuitry, prevent short circuits, and enhance mechanical strength in high-temperature environments. It is typically composed of a highly heat-resistant polyimide (PI) film combined with a high-performance adhesive, and covered with release paper to prevent contamination during transportation and storage.

[0004] When conventional high-temperature resistant cover film laminating fixtures are in operation, the laminating rollers lack a structure for guiding and tightening the film material. When laminating cover films of different thicknesses, they cannot accurately limit the position of the film material, and the film material is prone to shifting and slipping during the lamination process, affecting the final lamination accuracy. Summary of the Invention

[0005] The purpose of this invention is to provide a pressing and bonding fixture for FPC high-temperature resistant cover film to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pressing and bonding fixture for FPC high-temperature resistant cover film, comprising a first pressing roller and a tensioning frame component. A second pressing roller is arranged parallel to each other below the first pressing roller, and an adjusting frame component is connected and installed on the left and right sides of the first and second pressing rollers. The tensioning frame component is located at the upper end of one side and the lower end of the other side of the adjusting frame component. The tensioning frame component includes a first tensioning roller, a second tensioning roller, a stabilizing seat, a support adjusting screw, a positioning nut, an electric telescopic arm, and an electric joint. The second tensioning roller is arranged parallel to each other below the first tensioning roller, and stabilizing seats are installed at both ends of the first and second tensioning rollers. A support adjusting screw is vertically installed through the two sets of stabilizing seats on the side away from the first and second tensioning rollers, and a positioning nut is threaded onto the rod body of the support adjusting screw extending out of the stabilizing seat. The lower end of the electric telescopic arm is rotatably connected to the side end of the adjusting frame component through an electric joint, and the output ends of the two sets of electric telescopic arms are respectively connected to one end of the stabilizing seat at both ends of the second tensioning roller.

[0007] Furthermore, the first pressing roller includes a roller body, a high-temperature resistant silicone outer layer, a heat-conducting cavity, and a mounting shaft. The outer surface of the roller body is wrapped with a high-temperature resistant silicone outer layer, and a heat-conducting cavity is opened through the center of the roller body. Moreover, mounting shafts are fixed at the center of both ends of the roller body.

[0008] Furthermore, the mounting shaft is rotatably mounted on the inner side of the adjustment frame component, and a flow guide opening connected to the heat-conducting cavity is provided in the middle of the mounting shaft for introducing heat-conducting oil to maintain the temperature of the roller body.

[0009] Furthermore, the adjusting structure is used to drive the first pressing roller to move up and down relative to the second pressing roller, thereby adjusting the distance between the first pressing roller and the second pressing roller, and the second pressing roller has the same structure as the adjusting first pressing roller.

[0010] Furthermore, the adjustment structure includes a first support base, a support slide column, a second support base, a fixed base, a hydraulic rod, and a connecting base. The bottom of the first support base is vertically fixed with the support slide column, and the lower end of the support slide column is movably connected to the second support base. The bottom of the second support base is vertically fixed with the fixed base, and the hydraulic rod is fixedly installed on the side of the first support base and the second support base away from the first pressing roller and the second pressing roller through the connecting bases arranged vertically opposite each other.

[0011] Furthermore, the side of the first and second support seats away from the hydraulic rod is used to connect and fix with the mounting shaft. Bolt mounting holes are provided at the four opposite corners of the bottom of the fixed seat, so that the tooling can be fixed to the machine frame of the processing station by bolts.

[0012] Furthermore, the electric joint has holes at the four opposite corners of the end away from the electric telescopic arm where it connects with the first support and the second support, and the connecting seat also has holes at the four opposite corners of the connecting seat where it connects with the first support and the second support.

[0013] Furthermore, the second support base and the fixed base are welded together, and the first pressing roller is connected and fixed to the first support base through the mounting shaft, and the second pressing roller is connected and fixed to the second support base through the corresponding mounting shaft.

[0014] This invention provides a lamination and bonding fixture for FPC high-temperature resistant cover film, which has the following advantages: 1. This invention, through the structural design of the tensioning frame components, utilizes a first tensioning roller and a second tensioning roller to tension and guide the cover film material before it enters the first and second pressing rollers for pressing. Combined with the height-adjustable second tensioning roller and the position-adjustable first tensioning roller, it can adapt to the tensioning limit of cover films of different thicknesses, effectively preventing film material deviation and slippage during pressing, and improving the final bonding accuracy. Furthermore, the electric telescopic arm and electric joint can work with the adjustment frame components to adjust the distance between the first and second pressing rollers, simultaneously adjusting the overall angle of the tensioning frame components, ensuring that the film material input and output angles match the pressing gap after the distance adjustment, and reducing unnecessary tension pulling.

[0015] 2. This invention, through adjusting the structural settings of the frame components, allows the hydraulic rod to drive the first support seat to move up and down along the support slide column on the second support seat via the connecting seat, thereby driving the first pressing roller to move up and down as a whole. This precisely adjusts the pressing gap between the first and second pressing rollers, adapting to the pressing process of FPC high-temperature resistant cover films of different thicknesses. This provides a wider range of adaptability and more convenient operation and adjustment. Simultaneously, a heat-conducting cavity is opened inside the first pressing roller, allowing external heat-conducting oil to maintain a stable roller temperature. Combined with the high-temperature resistant silicone outer layer of the roller, stable pressing operations can be achieved under constant temperature conditions, improving the uniformity and firmness of the high-temperature resistant cover film pressing and bonding, and ensuring the final processing quality of the FPC high-temperature resistant cover film. Furthermore, a valve port structure connected to the inside of the mounting shaft can be added to the side of the first and second support seats away from the tensioning frame components, facilitating the circulation of heat-conducting oil without the need for additional external pipes at both ends of the roller body. This avoids bending and pulling of the pipes by the rotating roller body, maintaining the stability of the heat conduction operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main body of the pressing and bonding tooling for high-temperature resistant FPC cover film according to the present invention. Figure 2 This is a schematic diagram of the disassembled structure of the pressing and bonding fixture for FPC high-temperature resistant cover film according to the present invention; Figure 3 This is a three-dimensional structural diagram of the first pressing roller of the pressing and bonding tooling for FPC high temperature resistant cover film according to the present invention; Figure 4 This is a three-dimensional structural diagram of the adjustment frame component of the pressing and bonding tooling for a high-temperature resistant FPC cover film according to the present invention. Figure 5 This is a three-dimensional structural diagram of the tensioning frame component of a pressing and bonding fixture for a high-temperature resistant FPC cover film according to the present invention.

[0017] In the diagram: 1. First pressing roller; 101. Roller body; 102. High-temperature resistant silicone outer layer; 103. Heat-conducting cavity; 104. Mounting shaft; 2. Second pressing roller; 3. Adjustment frame component; 301. First support seat; 302. Support slide column; 303. Second support seat; 304. Fixed seat; 305. Hydraulic rod; 306. Connecting seat; 4. Tensioning frame component; 401. First tensioning roller; 402. Second tensioning roller; 403. Stabilizing seat; 404. Support adjusting screw; 405. Positioning nut; 406. Electric telescopic arm; 407. Electric joint. Detailed Implementation

[0018] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0019] like Figures 1 to 5As shown, a pressing and bonding fixture for FPC high-temperature resistant cover film includes a first pressing roller 1 and a tensioning frame 4. A second pressing roller 2 is arranged parallel to each other below the first pressing roller 1, and an adjusting frame 3 is connected and installed on the left and right sides of the first pressing roller 1 and the second pressing roller 2. The tensioning frame 4 is located at the upper end of one side and the lower end of the other side of the adjusting frame 3. The tensioning frame 4 includes a first tensioning roller 401, a second tensioning roller 402, a stabilizing seat 403, a supporting adjusting screw 404, a positioning nut 405, an electric telescopic arm 406, and an electric joint 407. The first tensioning roller 401... A second tensioning roller 402 is arranged parallel to the bottom of the first tensioning roller 401. Stabilizing seats 403 are installed at both ends of the first and second tensioning rollers 401 and 402. Supporting adjusting screws 404 are vertically installed through the two sets of stabilizing seats 403 on the side away from the first and second tensioning rollers 401 and 402. Positioning nuts 405 are threaded onto the rods of the supporting adjusting screws 404 extending out of the stabilizing seats 403. The lower end of the electric telescopic arm 406 is rotatably connected to the side end of the adjusting frame component 3 via an electric joint 407. The output ends of the two sets of electric telescopic arms 406 are respectively connected to the second tensioning roller. At one end of the stabilizing seat 403 at both ends of roller 402, and at the end of electric joint 407 away from electric telescopic arm 406, four diagonal points where it connects with the first support seat 301 and the second support seat 303 are provided with holes for bolt installation and fixing. Similarly, at the four diagonal points where the connecting seat 306 connects with the first support seat 301 and the second support seat 303, holes for bolt installation and fixing are also provided. During use, the first tensioning roller 401 and the second tensioning roller 402 tension and guide the covering film material before it enters the first pressing roller 1 and the second pressing roller 2 for pressing. Tightening the positioning nut 405 on the support adjustment screw 404 adjusts the distance between the first tensioning roller 401 and the second tensioning roller 402, adapting to different thicknesses of cover film to complete tensioning and limiting. The electric telescopic arm 406 can also drive the second tensioning roller 402 to make adaptive lifting and lowering. With the electric joint 407, it can follow the lifting and lowering of the first support seat 301 to adjust the overall angle of the tensioning structure component 4, ensuring that the film material input and output angles are adapted to the pressing gap after the spacing adjustment, effectively avoiding film material displacement and slippage during pressing, reducing unnecessary tension pulling, and improving the final bonding accuracy.

[0020] like Figures 1 to 5As shown, the first pressing roller 1 includes a roller body 101, a high-temperature resistant silicone outer layer 102, a heat-conducting cavity 103, and a mounting shaft 104. The outer surface of the roller body 101 is covered and bonded with the high-temperature resistant silicone outer layer 102, and a heat-conducting cavity 103 is formed through the center of the roller body 101. Mounting shafts 104 are fixed to the centers of both ends of the roller body 101. The mounting shafts 104 are rotatably mounted inside the adjusting frame 3, and a guide opening communicating with the heat-conducting cavity 103 is formed in the middle of the mounting shaft 104 to allow heat-conducting oil to be introduced to maintain the temperature of the roller body 101. The adjusting frame 3 is used to drive the first pressing roller 1 to rise and fall relative to the second pressing roller 2, thereby adjusting the temperature of the roller body 101. The spacing between the first pressing roller 1 and the second pressing roller 2 is such that the second pressing roller 2 has the same structure as the first pressing roller 1. The adjusting frame component 3 includes a first support base 301, a support slide column 302, a second support base 303, a fixed base 304, a hydraulic rod 305, and a connecting base 306. The bottom of the first support base 301 is vertically fixed to the support slide column 302, and the lower end of the support slide column 302 is movably connected to the second support base 303. The bottom of the second support base 303 is vertically fixed to the fixed base 304. The sides of the first support base 301 and the second support base 303 away from the first pressing roller 1 and the second pressing roller 2 are connected by an upper and lower relative connecting element. A hydraulic rod 305 is fixedly mounted on the connector 306. The side of the first support 301 and the second support 303 away from the hydraulic rod 305 is used to connect and fix to the mounting shaft 104. Bolt mounting holes are opened at the four opposite corners of the bottom of the fixed seat 304 so that the tooling can be fixed to the machine frame of the processing station by bolts. The second support 303 and the fixed seat 304 are welded together. The first pressing roller 1 is connected and fixed to the first support 301 through the mounting shaft 104, and the second pressing roller 2 is connected and fixed to the second support 303 through the corresponding mounting shaft 104. The hydraulic rod 305 drives the first support 301 along the first support 305 through the connector 306. The support slide column 302 on the second support base 303 can move up and down, which can drive the first pressing roller 1 to move up and down as a whole, and precisely adjust the pressing distance between the first pressing roller 1 and the second pressing roller 2. This allows for the pressing of FPC high-temperature resistant cover films of different thicknesses, making it more adaptable and easier to operate and adjust. At the same time, the heat-conducting cavity 103 inside the first pressing roller 1 can be connected to external heat-conducting oil to maintain the temperature stability of the roller body 101. Combined with the high-temperature resistant silicone outer layer 102 on the outer layer of the roller body 101, stable pressing operation can be achieved under constant temperature conditions, improving the uniformity and firmness of the high-temperature resistant cover film pressing and bonding, and ensuring the final processing quality of the FPC high-temperature resistant cover film.

[0021] In summary, as Figures 1 to 5As shown, the FPC high-temperature resistant cover film pressing and bonding fixture is used by first fixing the fixture to the frame of the processing station using bolts through the bolt mounting holes at the bottom of the fixed base 304. Then, according to the thickness of the FPC high-temperature resistant cover film to be pressed, the gap between the first pressing roller 1 and the second pressing roller 2 is adjusted. The hydraulic rod 305 in the adjusting frame 3 is activated. The hydraulic rod 305 drives the first support base 301 to move up and down along the support slide column 302 on the second support base 303 through the connecting base 306, thereby driving the first pressing roller 1 to move up and down as a whole, completing the precise adjustment of the pressing gap. Afterwards, the tensioning frame 4 is adjusted according to the thickness of the cover film: the positioning nut 405 on the support adjusting screw 404 is turned to adjust the first tensioning roller 401. The spacing of the second tensioning roller 402 is adjusted, and the electric telescopic arm 406 drives the second tensioning roller 402 to adjust the overall height. The electric joint 407 follows the lifting action of the first support seat 301 to adjust the overall angle of the tensioning frame component 4, ensuring that the input and output angle of the film material is adapted to the adjusted pressing gap. After the adjustment is completed, the cover film to be pressed is passed through the first tensioning roller 401 and the second tensioning roller 402 of the tensioning frame component 4 on the input side, and then fed into the first pressing roller 1 and the second pressing roller 2 to complete the pressing. Finally, it is discharged from the tensioning frame component 4 on the output side. During the pressing process, constant temperature heat transfer oil can be introduced into the heat transfer cavity 103 through the guide opening of the mounting shaft 104 to maintain the temperature stability of the roller body 101 and ensure the processing conditions of constant temperature pressing.

[0022] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A pressing and bonding fixture for FPC high-temperature resistant cover film, comprising a first pressing roller (1) and a tensioning frame component (4), characterized in that: A second pressing roller (2) is arranged parallel to the first pressing roller (1) below it, and an adjustment frame (3) is connected and installed on the left and right sides of the first pressing roller (1) and the second pressing roller (2). The tensioning frame (4) is arranged on the upper end of one side and the lower end of the other side of the adjustment frame (3). The tensioning frame (4) includes a first tensioning roller (401), a second tensioning roller (402), a stabilizing seat (403), a support adjusting screw (404), a positioning nut (405), an electric telescopic arm (406), and an electric joint (407). The second tensioning roller (402) is arranged parallel to the first tensioning roller (401) below it, and the first tensioning roller (402) is arranged parallel to the first tensioning roller (401). Stabilizing seats (403) are installed at both ends of the roller (401) and the second tension roller (402). Supporting adjusting screws (404) are vertically installed on the side of the two sets of stabilizing seats (403) away from the first tension roller (401) and the second tension roller (402). The supporting adjusting screws (404) extend out of the rod of the stabilizing seat (403) and are threaded with positioning nuts (405). The lower end of the electric telescopic arm (406) is rotatably connected to the side end of the adjusting frame component (3) through an electric joint (407). The output ends of the two sets of electric telescopic arms (406) are respectively connected to one end of the stabilizing seats (403) at both ends of the second tension roller (402).

2. The pressing and bonding fixture for a high-temperature resistant FPC cover film according to claim 1, characterized in that, The first pressing roller (1) includes a roller body (101), a high-temperature resistant silicone outer layer (102), a heat-conducting cavity (103), and a mounting shaft (104). The outer surface of the roller body (101) is covered with a high-temperature resistant silicone outer layer (102), and a heat-conducting cavity (103) is opened through the center of the roller body (101). The mounting shaft (104) is fixed at the center of both ends of the roller body (101).

3. The pressing and bonding fixture for a high-temperature resistant FPC cover film according to claim 2, characterized in that, The mounting shaft (104) is rotatably mounted on the inner side of the adjusting frame component (3), and the middle part of the mounting shaft (104) is provided with a flow guide opening that communicates with the heat-conducting cavity (103) for accessing heat-conducting oil to maintain the temperature of the roller body (101).

4. The pressing and bonding fixture for a high-temperature resistant FPC cover film according to claim 2, characterized in that, The adjustment structure component (3) is used to drive the first pressing roller (1) to rise and fall relative to the second pressing roller (2), thereby adjusting the distance between the first pressing roller (1) and the second pressing roller (2), and the second pressing roller (2) has the same structure as the first pressing roller (1).

5. The pressing and bonding fixture for a high-temperature resistant FPC cover film according to claim 2, characterized in that, The adjustment structure component (3) includes a first support base (301), a support slide column (302), a second support base (303), a fixed base (304), a hydraulic rod (305), and a connecting base (306). The support slide column (302) is vertically fixed at the bottom of the first support base (301), and the second support base (303) is movably connected to the lower end of the support slide column (302). The fixed base (304) is vertically fixed at the bottom of the second support base (303), and the hydraulic rod (305) is fixedly installed on the side of the first support base (301) and the second support base (303) away from the first pressing roller (1) and the second pressing roller (2) through the connecting base (306) arranged vertically.

6. The pressing and bonding fixture for a high-temperature resistant FPC cover film according to claim 5, characterized in that, The side of the first support (301) and the second support (303) away from the hydraulic rod (305) is used to connect and fix with the mounting shaft (104). The four opposite corners of the bottom of the fixed seat (304) are provided with bolt mounting holes so that the tooling can be fixed to the machine frame of the processing station by bolts.

7. The pressing and bonding fixture for a high-temperature resistant FPC cover film according to claim 5, characterized in that, The electric joint (407) has holes at the four opposite corners of the end away from the electric telescopic arm (406) where it connects with the first support (301) and the second support (303) for bolt installation and fixing. The connecting seat (306) also has holes at the four opposite corners of the end where it connects with the first support (301) and the second support (303) for bolt installation and fixing.

8. The pressing and bonding fixture for a high-temperature resistant FPC cover film according to claim 5, characterized in that, The second support (303) and the fixed seat (304) are welded together, and the first pressing roller (1) is connected and fixed to the first support (301) through the mounting shaft (104), and the second pressing roller (2) is connected and fixed to the second support (303) through the corresponding mounting shaft (104).

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