FPC hole plugging device

Abstract

The utility model discloses an FPC hole plugging device which comprises a screen printing plate and a screen printing machine table, the screen printing plate is arranged on a lifting mechanism and located above the screen printing machine table, a through hole corresponding to a circuit board plugging hole is formed in the screen printing plate, a base plate is arranged on the screen printing machine table, and a circuit board is arranged on the base plate. Vent grooves communicated with plug holes of the circuit board are formed in the upper end surface of the base plate; the positioning mechanism comprises a telescopic device, a driving plate and a positioning rod, the telescopic device is arranged below the screen printing machine table, the telescopic end of the telescopic device is connected with the driving plate, the driving plate is connected with the positioning rod, and the positioning rod penetrates through the screen printing machine table and the base plate and penetrates through the plug hole of the circuit board to extend upwards. The utility model has the advantages of fast alignment and good precision, and can prevent the situation that the filling material in the hole is mixed with more air and the plugged hole is not full enough.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to an FPC plugging device. Background Art

[0002] FPC (Flexible Printed Circuit) is a flexible circuit board, also known as a flexible circuit board. It is a printed circuit with high reliability and excellent flexibility, which is made by etching a circuit on a copper foil using polyester film (PET) or polyimide (PI) as the substrate. FPC has the characteristics of small size, light weight and thin thickness, meeting the needs of high density, miniaturization, light weight, thinness and high reliability.

[0003] Hole plugging is an important process in the FPC production process. It is necessary to fill the designated hole plugging material into the via hole of the circuit board in a certain way according to the requirements to prevent the copper surface of the via hole from being exposed and causing short circuits. The commonly used hole plugging process is to place the circuit board on the screen printing machine table, and then align the holes on the screen with the via holes to be plugged on the printed circuit board according to the screen printing method, place a large amount of hole plugging material on the screen, and then use a scraper to apply the hole plugging material so that the hole plugging material penetrates through the holes on the screen into the via holes to be plugged on the printed circuit board to form plugs. The existing hole plugging device has a slow alignment between the screen and the printed circuit board, and the alignment accuracy is poor. During the process, the material filled in the hole is mixed with a lot of air, which is prone to not being full enough, affecting the quality. Utility Model Content

[0004] The utility model aims to provide an FPC plugging device, which has fast positioning and good precision and can prevent the filling material in the hole from being mixed with a lot of air, resulting in the plugging hole being not full enough.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an FPC plugging device, including a screen and a screen printing machine, the screen is arranged on a lifting mechanism and located above the screen printing machine, through holes corresponding to the plugging holes of the circuit board are arranged on the screen printing machine, a pad is arranged on the screen printing machine, a circuit board is arranged on the pad, and a ventilation groove connected to the plugging hole of the circuit board is arranged on the upper surface of the pad; it also includes a positioning mechanism, the positioning mechanism includes a telescope, a drive plate and a positioning rod, the telescope is arranged below the screen printing machine, the telescopic end of the telescope is connected to the drive plate, the drive plate is connected to the positioning rod, the positioning rod passes through the screen printing machine and the pad, and extends upward through the plugging hole of the circuit board.

[0006] As a preferred embodiment of the present technical solution, the lifting mechanism includes a lifter and a guide rod, the lifter is arranged at two opposite corners of the screen, and the guide rod is arranged at the other two opposite corners of the screen.

[0007] As a preferred embodiment of the present technical solution, a plurality of ventilation grooves are provided, and the plurality of ventilation grooves are crisscrossed and arranged.

[0008] As a preferred embodiment of the present technical solution, the upper end of the positioning rod is arc-shaped.

[0009] As a preferred embodiment of the present technical solution, the screen printing machine, the pad and the driving plate all include a base plate and a movable plate, and the movable plate is detachably connected to the base plate.

[0010] The utility model is provided with a positioning mechanism, which comprises a telescope, a driving plate and a positioning rod. The telescope is arranged below the screen printing machine, the telescopic end of the telescope is connected to the driving plate, the driving plate is connected to the positioning rod, the positioning rod penetrates the screen printing machine and the pad, and extends upward through the plug hole of the circuit board. The positioning rod can position the screen and the circuit board quickly and accurately, and improve the alignment speed. When plugging the hole, the telescope can drive the driving plate and the positioning rod to stretch up and down, and the positioning rod moves up and down in the plug hole to discharge the air mixed in the hole, thereby avoiding the problem that the plug hole is not full enough and affects the quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 It is a schematic diagram of the positioning mechanism of the utility model during positioning.

[0013] Figure 3 It is a schematic diagram of the positioning mechanism of the utility model when plugging a hole.

[0014] In the figure: 1. screen; 2. circuit board; 3. pad; 3.1. ventilation groove; 4. screen printing machine; 5. telescope; 6. drive board; 7. positioning rod; 8. lifter; 9. guide rod. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-3The utility model discloses an FPC plugging device, comprising a screen 1 and a screen printing machine 4, wherein the screen 1 is arranged on a lifting mechanism and is located above the screen printing machine 4, through holes corresponding to the plugging holes of the circuit board 2 are arranged on the screen printing machine 4, a pad 3 is arranged on the screen printing machine 4, a circuit board 2 is arranged on the pad 3, and a vent 3.1 connected to the plugging holes of the circuit board 2 is arranged on the upper end surface of the pad 3; the utility model also includes a positioning mechanism, the positioning mechanism comprises a telescope 5, a driving plate 6 and a positioning rod 7, the telescope 5 is arranged below the screen printing machine 4, the telescopic end of the telescope 5 is connected to the driving plate 6, the driving plate 6 is connected to the positioning rod 7, the positioning rod 7 passes through the screen printing machine 4 and the pad 3, and extends upward through the plugging holes of the circuit board 2.

[0017] When the utility model is implemented, the through hole on the screen 1 and the plug hole on the circuit board are of the same size, and the axes of the two are coaxial. The lifting mechanism includes a lifter 8 and a guide rod 9. The lifter 8 is arranged at two opposite corners of the screen 1, and the guide rod 9 is arranged at the other two opposite corners of the screen 1. A through hole is also arranged on the screen printing machine 4 and the pad 3. The axis of the through hole and the plug hole on the circuit board 2 are coaxial and the size is also the same. The positioning rod 7 is slightly smaller than the through hole. The positioning rod 7 passes through the screen printing machine 4 and the pad 3 through the through hole and can move up and down in the through hole. The upper end of the positioning rod 7 is arc-shaped, which is convenient for the screen 1 to be sleeved on the positioning rod 7 through the through hole.

[0018] When the utility model is implemented, multiple ventilation grooves 3.1 are arranged, and the multiple ventilation grooves 3.1 are arranged crisscross, so that each plug hole on the circuit board 2 is connected to the ventilation groove 3.1, and the ventilation groove 3.1 is connected to the outside of the pad 3, so that the gas in the plug hole can be discharged. The screen printing machine 4, the pad 3 and the driving plate 6 all include a base plate and a movable plate, and the movable plate is detachably connected to the base plate. Different movable plates are provided with through holes at different positions to adapt to different circuit boards 2. The lifter 8 and the telescope 5 use a pneumatic cylinder or a hydraulic cylinder.

[0019] When the utility model is working, the circuit board is placed on the pad, the plug hole of the circuit board and the through hole on the pad are aligned and fixed, the telescopic device of the positioning mechanism drives the positioning rod to rise, the positioning rod passes through the plug hole of the circuit board and extends upward, the lifting mechanism drives the screen to sleeve the positioning rod downward, and the plug hole material is added to the screen. At this time, the telescopic device drives the positioning rod downward, and the plug hole material enters the plug hole of the circuit board. The positioning rod can move up and down at the bottom of the plug hole to discharge the air in the plug hole to the ventilation groove on the pad and discharge it. After completion, the positioning rod descends to the outside of the plug hole. The utility model can quickly position the screen and the circuit board, and the plug hole can better discharge the air in the hole, and the plug hole quality is improved.

[0020] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the utility model, which are used to illustrate the technical solution of the utility model, rather than to limit it. The protection scope of the utility model is not limited thereto. Although the utility model is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solution recorded in the above-mentioned embodiments within the technical scope disclosed by the utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiment of the utility model, and should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An FPC plugging device, comprising a screen and a screen printing machine, wherein the screen is arranged on a lifting mechanism and located above the screen printing machine, and through holes corresponding to the plugging holes of the circuit board are arranged on the screen, characterized in that: The screen printing machine is provided with a pad, a circuit board is provided on the pad, and a ventilation groove connected to the plug hole of the circuit board is provided on the upper surface of the pad; it also includes a positioning mechanism, the positioning mechanism includes a telescope, a drive plate and a positioning rod, the telescope is provided under the screen printing machine, the telescopic end of the telescope is connected to the drive plate, the drive plate is connected to the positioning rod, the positioning rod passes through the screen printing machine and the pad, and extends upward through the plug hole of the circuit board.

2. The FPC plugging device according to claim 1, characterized in that: The lifting mechanism comprises a lifter and a guide rod, wherein the lifter is arranged at two opposite diagonals of the screen, and the guide rod is arranged at the other two opposite diagonals of the screen.

3. The FPC plugging device according to claim 2, characterized in that: The ventilation grooves are arranged in a plurality and are arranged in a crisscross manner.

4. The FPC plugging device according to claim 3, characterized in that: The upper end of the positioning rod is arc-shaped.

5. The FPC plugging device according to claim 1, characterized in that: The screen printing machine platform, the pad plate and the driving plate all comprise a base plate and a movable plate, and the movable plate is detachably connected to the base plate.

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