A cover film structure for a flexible printed circuit board

Abstract

The utility model relates to circuit board production equipment technical field discloses a kind of cover film structures of flexible printed circuit board, including support, it is characterized by: the inner wall of the support is equipped with conveyor belt, the side of the support is equipped with driving motor, the output of the driving motor is connected with conveyor belt, the below of the conveyor belt is provided with bearing plate.This kind of cover film structure of flexible printed circuit board, by setting deviation rectification component, when carrying out laminating operation, when scanning conveyor belt by scanning equipment, when scanning equipment scans to flexible circuit board, it indicates that flexible circuit board is deviated, deviation rectification motor can drive deviation rectification wheel to rectify flexible circuit board, by laminating roller, film can be pressed to complete laminating operation, simultaneously, feeding assembly is adapted to different sizes of flexible circuit board by adjusting the position of vacuum chuck, and flexible circuit board is transferred from material box to conveyor belt, then, accurate feeding is completed by deviation rectification component.

Description

Technical Field

[0001] This utility model relates to the field of circuit board manufacturing equipment technology, specifically to a cover film structure for flexible printed circuit boards. Background Technology

[0002] Flexible printed circuit boards (FPCs) are widely used in smartphones, wearable devices, and automotive electronics due to their thinness, flexibility, and vibration resistance. The cover film, a key component of FPCs, protects the circuit patterns, provides moisture protection, and resists oxidation.

[0003] An existing patent (publication number: CN216253390U) discloses a flexible circuit board coating equipment, including a feeding assembly, a conveying assembly, and a coating assembly. The feeding assembly includes a material placement device, a lifting device, an adsorption device, a vertical moving device, and a horizontal moving device. The material placement device is connected to the lifting device. The adsorption device is located above the material placement device. The vertical moving device is connected to the adsorption device. The horizontal moving device is connected to the vertical moving device. The conveying assembly includes an infeed assembly and an outfeed assembly. The infeed assembly is located below the horizontal moving device and is connected to the front end of the coating assembly. The outfeed assembly is connected to the rear end of the coating assembly.

[0004] The aforementioned patent uses a feeding component to transfer the flexible circuit boards stacked on the placement device to a conveying component. The conveying component then transfers the flexible circuit boards to the coating component for coating, improving overall work efficiency. However, it still has some drawbacks. In actual operation, the flexible circuit board is still a rectangular copper foil adhered to the polyimide interlayer. Coating involves covering its surface with a thin polyimide layer. In the patent, the flexible circuit board is carried above the conveying component by its adsorption device and then falls freely to the feeding component. The flexible circuit board lands directly on a moving object, causing it to shift, resulting in inaccurate feeding during the coating process. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a cover film structure for flexible printed circuit boards, which has the advantage of precise feeding and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cover film structure for a flexible printed circuit board, including a support, a conveyor belt installed on the inner wall of the support, a drive motor installed on the side of the support, the output end of the drive motor connected to the conveyor belt, a support plate arranged below the conveyor belt, a protective shell fixed on the upper surface of the support plate, a correction component for correction and a coating component for coating are arranged inside the protective shell, and a feeding component for feeding is arranged on the side of the protective shell;

[0007] The correction assembly includes two track grooves disposed within a protective housing. Each track groove has two track blocks slidably connected to its inner wall. A movable plate is fixed to the bottom surface of each track block. A mounting block is fixed to the bottom surface of the middle position of each movable plate. A correction wheel is mounted on the bottom surface of each mounting block. Scanning devices are mounted on the bottom surfaces of both ends of the movable plate. The scanning devices are connected to an external control device. The scanning devices are located outside the correction wheels. During the conveyor belt transport process, the correction wheels are located above the flexible circuit board. By scanning the conveyor belt with the scanning devices, when an object is detected obstructing the conveyor belt, it indicates that the flexible circuit board has shifted.

[0008] The feeding assembly includes a slide groove fixed to the side of the protective shell. A slider is slidably connected to the inner wall of the slide groove. A lifting hydraulic rod is fixed to the side of the slider. An installation plate is installed at the output end of the lifting hydraulic rod. Four adjustment slots are provided on the bottom surface of the installation plate. Vacuum suction cups are installed on the inner wall of the adjustment slots. The vacuum suction cups can be moved and adjusted according to actual usage requirements by moving within the adjustment slots. The vacuum suction cups are connected to an external control device.

[0009] Furthermore, a correction motor is mounted on the side of the mounting block, and the output end of the correction motor is connected to the correction wheel.

[0010] The above scheme allows the correction motor to drive the correction wheel to rotate, and the rotation of the correction wheel can correct the film's deviation.

[0011] Furthermore, an adjusting motor is installed at the end of the track groove, and an adjusting threaded rod is installed at the output end of the adjusting motor. The outer surface of the adjusting threaded rod is provided with a bidirectional threaded groove, and the adjusting threaded rod is threadedly connected to the track block.

[0012] The above solution allows for the adjustment of the motor to move and adjust the movable plate, thereby adapting it to flexible circuit boards of different sizes.

[0013] Furthermore, a fixing frame is fixed to the bottom surface of the protective shell, and two lifting electric push rods are installed on the upper surface of the fixing frame. The output end of the lifting electric push rod is connected to its corresponding track groove.

[0014] The above solution allows the lifting electric push rod to lower the corresponding track groove, causing the corresponding correction wheel to come into contact with the flexible circuit board.

[0015] Furthermore, the coating assembly includes a lifting groove, a coating roller is rotatably connected to the inner wall of the lifting groove, a coating electric actuator is installed on the upper surface of the lifting groove, and the other end of the coating electric actuator is fixed to the protective shell.

[0016] The above scheme allows the film to be pressed by the film-coating roller to complete the coating operation, and the film-coating electric actuator can drive the film-coating roller to perform lifting and lowering operations.

[0017] Furthermore, a dust cover is installed on the upper surface of the protective shell. Two fixing blocks are provided inside the dust cover. The fixing blocks are fixed to the protective shell. A rod is inserted between the fixing blocks. A bearing sleeve is sleeved on the outer surface of the rod. A thin film body is sleeved on the outer surface of the bearing sleeve.

[0018] With the above method, the film body bypasses the coating roller and is located directly below the coating roller. The film body is then pressed by the coating roller to adhere to the surface of the flexible circuit board.

[0019] Furthermore, a material box is provided in front of the bracket, and the flexible circuit board to be processed is placed in the material box. A feeding motor is installed on the side of the slide, and a feeding threaded rod is rotatably connected to the inner wall of the slide. The output end of the feeding motor is connected to the feeding threaded rod, and the feeding threaded rod is threadedly connected to the slider.

[0020] The above scheme allows the feeding motor to drive the feeding threaded rod to rotate, and the rotation of the feeding threaded rod to move and adjust the lifting hydraulic rod.

[0021] Furthermore, a tempered glass plate is hinged to the front of the protective shell.

[0022] The above method allows for observation of the working conditions inside the protective shell through a tempered glass plate.

[0023] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0024] This flexible printed circuit board cover film structure, by setting up a correction component, during the lamination operation, a scanning device scans the conveyor belt. When the scanning device scans the flexible circuit board, it indicates that the flexible circuit board has deviated. The correction motor drives the correction wheel to correct the deviation of the flexible circuit board. The lamination roller can press the film to complete the lamination operation. At the same time, the feeding component adjusts the position of the vacuum suction cup to adapt to flexible circuit boards of different sizes and transfers the flexible circuit boards from the material box to the conveyor belt. Then, the correction component completes the precise feeding. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present application;

[0026] Figure 2 This is a side view of the overall protective shell of this application;

[0027] Figure 3 This is a bottom view of the overall mounting plate of this application;

[0028] Figure 4 This is a sectional view of the side view of the overall protective shell of this application;

[0029] Figure 5 This is a structural diagram of the overall correction assembly of this application;

[0030] Figure 6 This is a sectional view of the overall track groove side view of this application.

[0031] In the picture:

[0032] 1. Support frame; 2. Conveyor belt; 3. Drive motor; 4. Support plate; 5. Protective casing;

[0033] 6. Correction assembly; 601. Track groove; 602. Moving plate; 603. Mounting block; 604. Correction wheel; 605. Scanning device; 606. Correction motor; 607. Adjustment motor; 608. Adjustment threaded rod; 609. Fixing frame; 610. Lifting electric push rod;

[0034] 7. Coating assembly; 701. Lifting groove; 702. Coating roller; 703. Coating electric actuator; 704. Dust cover; 705. Fixing block; 706. Insert rod; 707. Film body;

[0035] 8. Feeding assembly; 801. Slide rail; 802. Lifting hydraulic rod; 803. Mounting plate; 804. Adjustment groove; 805. Vacuum suction cup; 806. Material box; 807. Feeding motor; 808. Feeding threaded rod;

[0036] 9. Tempered glass plate. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] Please see Figure 1 , Figure 2 and Figure 3The cover film structure of a flexible printed circuit board in this embodiment includes a support 1, a conveyor belt 2 installed on the inner wall of the support 1, a drive motor 3 installed on the side of the support 1, the output end of the drive motor 3 being connected to the conveyor belt 2, a support plate 4 being provided below the conveyor belt 2, a protective shell 5 being fixed on the upper surface of the support plate 4, a correction component 6 for correction and a film coating component 7 for film coating being provided inside the protective shell 5, and a feeding component 8 for feeding material being provided on the side of the protective shell 5.

[0039] Please see Figure 4 , Figure 5 and Figure 6 The correction component 6 includes two track grooves 601 disposed within the protective shell 5. Each track groove 601 has two track blocks slidably connected to its inner wall. A movable plate 602 is fixed to the bottom surface of the track block. A mounting block 603 is fixed to the bottom surface of the middle position of the movable plate 602. A correction wheel 604 is mounted on the bottom surface of the mounting block 603. Scanning devices 605 are mounted on the bottom surfaces of both ends of the movable plate 602. The scanning devices 605 are connected to an external control device. The scanning devices 605 are located outside the correction wheels 604. During the conveyor belt 2 transport process, the correction wheels 604 are located above the flexible circuit board. The scanning devices 605 scan the conveyor belt 2. When an object is detected to block the conveyor belt 2, it indicates that the flexible circuit board has shifted.

[0040] Please see Figure 1 , Figure 2 and Figure 3 The feeding assembly 8 includes a slide groove 801 fixed to the side of the protective shell 5. A slider is slidably connected to the inner wall of the slide groove 801. A lifting hydraulic rod 802 is fixed to the side of the slider. An installation plate 803 is installed at the output end of the lifting hydraulic rod 802. Four adjustment grooves 804 are provided on the bottom surface of the installation plate 803. A vacuum suction cup 805 is installed on the inner wall of the adjustment groove 804. The vacuum suction cup 805 can be moved and adjusted according to the actual use requirements by moving within the adjustment groove 804. The vacuum suction cup 805 is connected to an external control device.

[0041] Please see Figure 4 , Figure 5 and Figure 6 A correction motor 606 is mounted on the side of the mounting block 603. The output end of the correction motor 606 is connected to the correction wheel 604. The correction motor 606 can drive the correction wheel 604 to rotate, and the rotation of the correction wheel 604 can correct the film. An adjustment motor 607 is mounted on the end of the track groove 601. An adjustment threaded rod 608 is mounted on the output end of the adjustment motor 607. The outer surface of the adjustment threaded rod 608 is provided with a bidirectional threaded groove. The adjustment threaded rod 608 is threadedly connected to the track block. The adjustment motor 607 can drive the moving plate 602 to move and adjust, thereby adapting to flexible circuit boards of different sizes.

[0042] Please see Figure 4 , Figure 5 and Figure 6 The bottom surface of the protective shell 5 is fixed with a fixing frame 609. Two lifting electric push rods 610 are installed on the upper surface of the fixing frame 609. The output end of the lifting electric push rod 610 is connected to its corresponding track groove 601. The lifting electric push rod 610 can drive the corresponding track groove 601 to descend, so that the corresponding correction wheel 604 contacts the flexible circuit board. The film coating assembly 7 includes a lifting groove 701. The inner wall of the lifting groove 701 is rotatably connected to a film coating roller 702. A film coating electric push rod 703 is installed on the upper surface of the lifting groove 701. The other end of the film coating electric push rod 703 is fixed to the protective shell 5. The film coating operation can be completed by pressing the film through the film coating roller 702. The film coating operation can be completed by the film coating electric push rod 703. The film coating roller 702 can be lifted and lowered through the film coating electric push rod 703.

[0043] Please see Figure 1 , Figure 2 and Figure 4 A dust cover 704 is installed on the upper surface of the protective shell 5. Two fixing blocks 705 are installed inside the dust cover 704, and the fixing blocks 705 are fixed to the protective shell 5. An insert rod 706 is inserted between the fixing blocks 705. A bearing sleeve is fitted onto the outer surface of the insert rod 706, and a film body 707 is fitted onto the outer surface of the bearing sleeve. The film body 707 passes around the laminating roller 702 and is located directly below the laminating roller 702. The film body 707 is adhered to the surface of the flexible circuit board by the pressure of the laminating roller 702. A material box 806 is located in front of the support 1, containing the flexible circuit board to be processed. The plate is placed in the material box 806. A feeding motor 807 is installed on the side of the slide 801. A feeding threaded rod 808 is rotatably connected to the inner wall of the slide 801. The output end of the feeding motor 807 is connected to the feeding threaded rod 808. The feeding threaded rod 808 is threadedly connected to the slider. The feeding motor 807 can drive the feeding threaded rod 808 to rotate. The rotation of the feeding threaded rod 808 drives the lifting hydraulic rod 802 to move and adjust. A tempered glass plate 9 is hinged to the front of the protective shell 5. The working condition inside the protective shell 5 can be observed through the tempered glass plate 9.

[0044] It should be noted that before the lamination operation, the positions of the vacuum suction cup 805 and the moving plate 602 are first adjusted according to the size of the flexible circuit board, so that the vacuum suction cup 805 can adsorb the four corners of the flexible circuit board, while the alignment wheel 604 is positioned above the flexible circuit board and the scanning device 605 is not positioned above the flexible circuit board.

[0045] The working principle of the above embodiment is as follows: During use, the flexible circuit board in the material box 806 is transferred to the conveyor belt 2 by the feeding component 8. The feeding motor 807 is started, and the feeding motor 807 drives the feeding threaded rod 808 to rotate. The rotation of the feeding threaded rod 808 drives the lifting hydraulic rod 802 to move. The lifting hydraulic rod 802 drives the mounting plate 803 to descend until the vacuum suction cup 805 contacts the flexible circuit board. Then the mounting plate 803 rises and moves to the top of the conveyor belt 2 under the drive of the feeding threaded rod 808. The vacuum suction cup 805 closes, causing the flexible circuit board to fall onto the upper surface of the conveyor belt 2.

[0046] The conveyor belt 2 moves under the drive of the drive motor 3, transferring the flexible circuit board to the underside of the protective shell 5. During the conveying process of the conveyor belt 2, the correction wheel 604 is located above the flexible circuit board. The scanning device 605 scans the conveyor belt 2. When an object is detected to block the conveyor belt, it indicates that the flexible circuit board has shifted. At this time, the lifting electric push rod 610 drives the track groove 601 to descend, so that the correction wheel 604 comes into contact with the flexible circuit board. At the same time, the correction motor 606 starts and drives the correction wheel 604 to rotate. The correction wheel 604 corrects the flexible circuit board until the scanning device 605 can continue to scan the conveyor belt. The film coating electric push rod 703 drives the film coating roller 702 to descend. The film coating roller 702 presses the film to complete the film coating operation.

[0047] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cover film structure for a flexible printed circuit board, comprising a support (1), characterized in that: The inner wall of the support (1) is equipped with a conveyor belt (2), and the side of the support (1) is equipped with a drive motor (3). The output end of the drive motor (3) is connected to the conveyor belt (2). A bearing plate (4) is provided below the conveyor belt (2). A protective shell (5) is fixed on the upper surface of the bearing plate (4). A correction component (6) for correction and a coating component (7) for coating are provided inside the protective shell (5). A feeding component (8) for feeding is provided on the side of the protective shell (5). The correction assembly (6) includes two track grooves (601) disposed inside the protective shell (5). Each track groove (601) has two track blocks slidably connected to its inner wall. A movable plate (602) is fixed to the bottom surface of the track block. An installation block (603) is fixed to the bottom surface of the middle position of the movable plate (602). A correction wheel (604) is installed on the bottom surface of the installation block (603). Scanning devices (605) are installed on the bottom surfaces of both ends of the movable plate (602). The scanning devices (605) are connected to an external control device. The scanning devices (605) are located outside the correction wheel (604). The feeding assembly (8) includes a slide groove (801) fixed to the side of the protective shell (5). A slider is slidably connected to the inner wall of the slide groove (801). A lifting hydraulic rod (802) is fixed to the side of the slider. An installation plate (803) is installed at the output end of the lifting hydraulic rod (802). Four adjustment grooves (804) are provided on the bottom surface of the installation plate (803). A vacuum suction cup (805) is installed on the inner wall of the adjustment groove (804). The vacuum suction cup (805) is connected to an external control device.

2. The cover film structure for a flexible printed circuit board according to claim 1, characterized in that: A correction motor (606) is mounted on the side of the mounting block (603), and the output end of the correction motor (606) is connected to the correction wheel (604).

3. The cover film structure for a flexible printed circuit board according to claim 1, characterized in that: An adjusting motor (607) is installed at the end of the track groove (601), and an adjusting threaded rod (608) is installed at the output end of the adjusting motor (607). The outer surface of the adjusting threaded rod (608) is provided with a bidirectional threaded groove, and the adjusting threaded rod (608) is threadedly connected to the track block.

4. The cover film structure for a flexible printed circuit board according to claim 1, characterized in that: The bottom surface of the protective shell (5) is fixed with a fixing frame (609), and two lifting electric push rods (610) are installed on the upper surface of the fixing frame (609). The output end of the lifting electric push rod (610) is connected to its corresponding track groove (601).

5. The cover film structure for a flexible printed circuit board according to claim 1, characterized in that: The coating assembly (7) includes a lifting groove (701), the inner wall of which is rotatably connected to a coating roller (702), and a coating electric push rod (703) is installed on the upper surface of the lifting groove (701). The other end of the coating electric push rod (703) is fixed to the protective shell (5).

6. The cover film structure for a flexible printed circuit board according to claim 1, characterized in that: The upper surface of the protective shell (5) is equipped with a dust cover (704). Inside the dust cover (704) are two fixing blocks (705). The fixing blocks (705) are fixed to the protective shell (5). A plug rod (706) is inserted between the fixing blocks (705). A bearing sleeve is sleeved on the outer surface of the plug rod (706). A thin film body (707) is sleeved on the outer surface of the bearing sleeve.

7. The cover film structure for a flexible printed circuit board according to claim 1, characterized in that: A material box (806) is provided in front of the bracket (1). The flexible circuit board to be processed is placed in the material box (806). A feeding motor (807) is installed on the side of the slide (801). A feeding threaded rod (808) is rotatably connected to the inner wall of the slide (801). The output end of the feeding motor (807) is connected to the feeding threaded rod (808). The feeding threaded rod (808) is threadedly connected to the slider.

8. The cover film structure for a flexible printed circuit board according to claim 1, characterized in that: The protective shell (5) has a tempered glass plate (9) hinged to its front.

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