Flexible circuit board protective film coating device

Abstract

The utility model provides a flexible circuit board protective film laminating device which comprises a base, a conveyor belt arranged on the base and a laminating mechanism arranged above the conveyor belt, the laminating mechanism comprises a support, a telescopic rod arranged on the support and a rolling assembly fixed on the telescopic rod, and the rolling assembly comprises a horizontally arranged mounting plate. Guide rails and sliding blocks slidably arranged on the guide rails are arranged at the bottoms of the mounting plates, and rolling wheels are arranged at the bottoms of the sliding blocks. The rolling assembly is moved downwards to the surface of the flexible circuit board through the telescopic rod, the rolling wheel is moved through cooperation of the guide rail and the sliding block, the rolling wheel moves and rolls on the protective film, the protective film is tightly combined with the surface of the flexible circuit board, and therefore automatic film covering is completed. According to the laminating device, the protective film is pressed and fixed through the rolling wheels, the laminating device can be used for a soft flexible circuit board, so that automatic laminating is completed, and the laminating efficiency and effect are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit board production technical field especially relates to a flexible circuit board protection film laminating device. BACKGROUND

[0002] In printed circuit board (PCB) processing and production, the protection film (cover film or encapsulation) plays a crucial role. It prevents short circuits in the circuit, similar to solder mask. The protection film is a three-layer structure, including insulating material polyimide (PI), glue and release paper. Its color is diverse, commonly yellow, white, black, etc., and special colors such as rainbow, green, etc. are more expensive. According to product requirements, choose different specifications of protection film.

[0003] The main functions of the circuit board protection film include protecting the circuit board from environmental factors and physical damage, and the specific functions are as follows: environmental protection: the protection film can prevent dust, moisture, chemicals and other pollutants from entering the surface of the circuit board, providing an additional protective layer to reduce corrosion and damage to the circuit. Insulation protection: the protection film has insulation properties, which can effectively isolate the electrical contact between the circuit board and the external environment, reducing the risk of electrical leakage and short circuit. Mechanical protection: the protection film can resist mechanical impact, vibration and friction, providing a physical barrier to reduce the likelihood of physical damage to the circuit board. Identification and aesthetics: the protection film can be used to print identification, graphics and text, making the components and connections on the circuit board more clearly visible and providing an overall aesthetic appearance.

[0004] Currently, there are automated laminating equipment that moves and transports circuit boards through conveyor belts or suction devices, then places the protection film on the circuit board, and realizes the covering through pressing and other methods. However, this traditional laminating equipment is only suitable for hard PCB circuit boards, and for flexible circuit boards (FPC), because the overall state is not fixed, it is not convenient to use the traditional laminating equipment, and it is difficult to tightly cover the protection film on the surface of the flexible circuit board. Therefore, a laminating equipment for flexible circuit boards is needed. SUMMARY

[0005] In view of the deficiencies in the prior art, the utility model provides a flexible circuit board protection film laminating device, which solves the problem that the laminating equipment in the prior art is not suitable for soft flexible circuit boards, resulting in loose protection film connection and poor laminating effect.

[0006] According to the embodiment of the utility model, a flexible circuit board protection film laminating device, including base, setting on the conveyer belt of base and setting laminating mechanism above the conveyer belt, the conveyer belt horizontal setting, laminating mechanism includes support, setting telescopic link on the support and fixed on the roller pressure subassembly of telescopic link, telescopic link top end is fixed on the support vertically, the roller pressure subassembly with the bottom of telescopic link is connected, thereby by telescopic link control roller pressure subassembly to the interval between conveyer belt upper surface,

[0007] The roller pressure subassembly includes a horizontally arranged mounting plate, the mounting plate top is connected with the telescopic link, the mounting plate bottom is provided with a guide rail and a sliding block slidingly arranged on the guide rail, the guide rail is parallel to the conveying direction of the conveyer belt, the sliding block bottom is provided with a roller pressure wheel, the roller pressure wheel is horizontally arranged and perpendicular to the conveying direction of the conveyer belt, and the roller pressure wheel is rotatably connected with the sliding block.

[0008] Further, the support includes a support rod and a support plate, the support rod is vertically erected on the top of the base and located outside the two sides of the conveyer belt, the support plate is horizontally fixed above the conveyer belt, and the top end of the telescopic link is fixed to the bottom surface of the support plate.

[0009] Further, the guide rail is a ball screw guide rail, which includes a plurality of parallel arranged smooth straight rods and a screw rod, the sliding block is connected with the screw rod through a ball bearing and is limited by the straight rods, and one end of the screw rod is further connected with a motor.

[0010] Further, the sliding block is provided with a connecting plate extending downward symmetrically corresponding to the positions of the two sides of the conveyer belt, and the rotating shafts of the roller pressure wheels are rotatably installed on the connecting plates, so that the roller pressure wheels can freely rotate.

[0011] Further, the sliding block is further provided with two groups of air jet heads symmetrically arranged corresponding to the front and rear sides of the roller pressure wheel, the air jet heads are in a sheet structure, the air jet direction of the air jet heads is towards the front and rear sides of the roller pressure wheel along the running direction of the sliding block, the sliding block is internally provided with a hollow air supply cavity, one end of the air supply cavity is connected with the air jet head, and the other end is connected to a high-pressure gas tank arranged on the top of the support through a hose.

[0012] Further, the surface of the roller pressure wheel is provided with a flexible cushion layer.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model discloses a flexible circuit board is transported through the conveyer belt, then the film covering mechanism is set in the top of conveyer belt, when the flexible circuit board moves to the corresponding position and then temporarily stops, at this moment, the protection film is put, and the telescopic pole moves the roller assembly to the surface of flexible circuit board downwards, moves the roller wheel through the cooperation of guide rail and sliding block, makes the roller wheel move and press on the protection film, makes the protection film and the surface of flexible circuit board close combination, thereby completes the automatic film covering. The utility model realizes the compression fixing of protection film through the roller wheel, can use for the soft flexible circuit board, thereby completes the automatic film covering, ensures the film covering efficiency and effect;

[0015] 2. The utility model discloses the front and back side of roller wheel still sets up the air jet head respectively, and the air jet head spouts the high pressure airflow simultaneously, thereby first blows open the protection film before the roller wheel passes, keeps the flatness of protection film, then carries out the roller pressing again, avoids the wrinkle or bubble of light and thin protection film, further improves the close density of film covering. DRAWINGS

[0016] Figure 1 It is the structure schematic drawing of the utility model embodiment.

[0017] Figure 2 It is the structure schematic drawing of the roller assembly in the utility model embodiment.

[0018] In the above drawing, 1, base, 2, conveyer belt, 3, support, 4, telescopic pole, 5, roller assembly, 6, hose, 7, high pressure gas tank, 31, support rod, 32, support plate, 51, mounting plate, 52, guide rail, 53, sliding block, 54, connecting plate, 55, roller wheel, 56, motor, 57, air jet head. DETAILED DESCRIPTION

[0019] The technical scheme in the utility model will be further explained in connection with the drawings and embodiments.

[0020] As Figure 1 The utility model discloses a flexible circuit board protection film film covering device, including base 1, set up on base 1 conveyer belt 2 and set up in the film covering mechanism above conveyer belt 2. The base 1 has a plurality of support feet in this embodiment and supports the conveyer belt 2 horizontally in the air, so that the flexible circuit board on the conveyer belt 2 can continuously pass through the position below the film covering mechanism to realize continuous processing. In this embodiment, the belt type conveyer belt 2 is preferably used, and the support plate 32 is provided below the belt to provide a support surface for the film covering mechanism.

[0021] The film covering mechanism comprises a support 3, an extension rod 4 arranged on the support 3, and a roller assembly 5 fixed on the extension rod 4. In the embodiment, the extension rod 4 adopts a hydraulic extension structure. The support 3 comprises a support rod 31 and a support plate 32. The support rod 31 is vertically arranged on the top of the base 1 and located outside the two sides of the conveying belt 2. The support plate 32 is horizontally fixed above the conveying belt 2. The top end of the extension rod 4 is fixed to the bottom surface of the support plate 32. The top end of the extension rod 4 is vertically fixed to the support 3. The roller assembly 5 is connected to the bottom end of the extension rod 4, so that the distance between the roller assembly 5 and the upper surface of the conveying belt 2 is controlled by the extension rod 4. When a flexible circuit board moves below the roller assembly 5, the conveying belt 2 is paused so that the flexible circuit board stays at the position. At this time, a staff member places a protective film on the flexible circuit board. Then, the extension rod 4 controls the roller assembly 5 to move downward to the surface of the flexible circuit board, thereby realizing film covering processing.

[0022] As shown in Figure 2 the embodiment, the roller assembly 5 comprises a horizontally arranged mounting plate 51. The top of the mounting plate 51 is connected to the extension rod 4. The bottom of the mounting plate 51 is provided with a guide rail 52 and a sliding block 53 slidingly arranged on the guide rail 52. The guide rail 52 is parallel to the conveying direction of the conveying belt 2. The bottom of the sliding block 53 is provided with a roller 55. The roller 55 is horizontally arranged and perpendicular to the conveying direction of the conveying belt 2. The roller 55 is rotationally connected to the sliding block 53. Preferably, the sliding block 53 is symmetrically provided with a connecting plate 54 extending downward at a position corresponding to each side of the conveying belt 2. The both ends of the rotating shaft of the roller 55 are rotationally arranged on the connecting plates 54, so that the roller 55 can freely rotate.

[0023] As a preferred, the guide rail 52 is a ball screw guide rail 52, which comprises a plurality of smooth straight rods arranged side by side and a screw rod. The sliding block 53 is connected to the screw rod through a ball bearing and is limited by the straight rods. One end of the screw rod is further connected to a motor 56. When the motor 56 drives the screw rod to rotate, the sliding block 53 is driven to move along the screw rod through the screw transmission, and at this time, the roller 55 can roll back and forth above the protective film, so as to press the protective film tightly on the upper surface of the flexible circuit board, and make the two closely adhere to each other. Further preferably, a flexible cushion layer is arranged on the surface of the roller 55, so that the pressure of the roller 55 on the protective film is more uniform, and the situation of local un-compaction is avoided.

[0024] In a further scheme, the slider 53 is further provided with two symmetrical groups of air jet heads 57 corresponding to the front and back sides of the roller 55. The air jet heads 57 are in a sheet structure, the width of which matches the length of the roller 55, and the air jet direction is towards the front and back sides of the roller 55 along the running direction of the slider 53. The slider 53 is internally provided with a hollow air supply cavity, one end of which is connected to the air jet heads 57, and the other end is connected to a high-pressure air tank 7 provided on the top of the support 3 through a hose 6. The air jet heads 57 spray high-pressure air flow while rolling, so as to first blow open the protective film before the roller 55 passes, keep the protective film flat, and then roll, so as to avoid wrinkles or bubbles in the light and thin protective film, and further improve the tightness of the film.

[0025] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A flexible circuit board protective film coating device, characterized in that: The film covering mechanism comprises a support, an extension rod arranged on the support and a roller assembly fixed on the extension rod, the top end of the extension rod is vertically fixed on the support, and the roller assembly is connected with the bottom end of the extension rod, so that the distance between the roller assembly and the upper surface of the conveying belt is controlled by the extension rod. The roller assembly comprises a horizontally arranged mounting plate, the top of the mounting plate is connected with the extension rod, the bottom of the mounting plate is provided with a guide rail and a sliding block slidingly arranged on the guide rail, the guide rail is parallel to the conveying direction of the conveying belt, and the bottom of the sliding block is provided with a roller, the roller is horizontally arranged and perpendicular to the conveying direction of the conveying belt, and the roller is rotationally connected with the sliding block.

2. The flexible circuit board protection film laminating apparatus of claim 1, wherein: The support comprises a support rod and a support plate, the support rod is vertically arranged on the top of the base and located outside the conveying belt, and the support plate is horizontally fixed above the conveying belt, and the top end of the extension rod is fixed to the bottom surface of the support plate.

3. The flexible circuit board protection film laminating apparatus of claim 1, wherein: The guide rail is a ball screw guide rail, which comprises a plurality of smooth straight rods arranged side by side and a screw rod, the sliding block is connected with the screw rod through a ball bearing and is limited by the straight rods, and one end of the screw rod is further connected with a motor.

4. The flexible circuit board protection film laminating apparatus of claim 1, wherein: The sliding block is provided with a downwardly extending connecting plate corresponding to the positions of the two sides of the conveying belt, and the rotating shafts of the roller are rotatably installed on the connecting plates, so that the roller can freely rotate.

5. The flexible circuit board protection film laminating apparatus of claim 1, wherein: The sliding block is further provided with two groups of air jet heads corresponding to the front and rear sides of the roller, the air jet heads are in a sheet structure, the air jet direction of the air jet heads is towards the front and rear sides of the roller along the running direction of the sliding block, the sliding block is internally provided with a hollow air supply cavity, one end of the air supply cavity is connected with the air jet head, and the other end is connected with a high-pressure gas tank arranged on the top of the support through a hose.

6. The flexible circuit board protection film laminating apparatus of claim 1, wherein: The surface of the roller is provided with a flexible cushion layer.

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