CN219628021U

CN219628021U - PCB board resin hole plugging structure

Info

Publication number: CN219628021U
Application number: CN202321117841.1U
Authority: CN
Inventors: 梁东兵; 张道斌
Original assignee: Advanced Electronic Zhuhai Co ltd
Current assignee: Advanced Electronic Zhuhai Co ltd
Priority date: 2023-05-09
Filing date: 2023-05-09
Publication date: 2023-09-01
Anticipated expiration: 2033-05-09

Abstract

The utility model relates to a PCB resin plug hole structure, which comprises a board main body and a plurality of drilling holes; because the hole plugging structure is arranged in the drilling hole, the hole plugging structure comprises a dry film plate and a sealing gasket. When the sealing gasket is used, the dry film plate is sealed on the plate main body above the drilling hole, and then the sealing gasket is arranged in a gap between the surface of the dry film plate and the surface of the plate main body, so that the sealed drilling hole is in a sealed state, resin ink in the resin hole plugging process is prevented from penetrating into the drilling hole without the resin hole plugging, and the phenomenon that the service performance of the PCB is influenced due to the blockage of the drilling hole in the processing process is avoided.

Description

PCB board resin hole plugging structure

[ field of technology ]

The utility model relates to the technical field of PCB manufacturing production, in particular to a PCB resin hole plugging structure for PCB resin hole plugging procedures.

[ background Art ]

The prior art PCB manufacturing process comprises the working procedures of material cutting, inner layer processing, pressing, drilling, copper deposition VCP, dry film hole sealing, resin hole plugging, resin grinding, dry film removing, follow-up procedures and the like. In the existing resin hole plugging process, because the hole diameter of the drilled holes on the PCB is smaller, or the hole density of the drilled holes is large, or the distance between the drilled holes is too close to the hole diameter of the drilled holes, under normal conditions, the used resin ink can easily permeate into the adjacent hole diameter without the drilled holes, so that the drilled holes on the PCB are blocked, the finished product performance of the processed PCB is influenced, and even the processed PCB cannot be used.

[ utility model ]

Accordingly, the technical problem to be solved by the present utility model is to provide a hole plugging structure of PCB resin capable of avoiding the occurrence of the phenomenon that the use performance of PCB is affected due to the blockage of the drilling hole during the processing.

The technical problem is solved, and the technical scheme of the utility model provides a PCB resin hole plugging structure, which comprises a board main body and a plurality of holes arranged on the board main body; be provided with the consent structure that is used for preventing resin infiltration in the drilling, this consent structure is including setting up the dry membrane board in the drilling upper and lower surface of board main part respectively to and set up the sealing washer that is used for protecting drilling edge cleanliness between dry membrane board surface and drilling upper and lower surface.

Further defined, the plug hole structure comprises a drilling plug body directly plugged into the drilling hole, and a sealing ring arranged at the intersection of the drilling plug body and the drilling hole.

Further defined, the dry film panel is made of a dry film material having a dry film thickness greater than 38um and a dry film width greater than 0.025 mm of the diameter length of the smallest borehole being enclosed.

Further defined, the plate body includes a copper layer disposed at a periphery, and an insulating body disposed inside the copper layer.

Further defined, the clearance distance between the bores is less than 0.5 millimeters.

The beneficial technical effects of the utility model are as follows: because the hole plugging structure for preventing the resin from penetrating is arranged in the drilling hole, the hole plugging structure comprises dry film plates which are respectively arranged on the upper surface and the lower surface of the drilling hole of the plate main body, and a sealing gasket which is arranged between the surface of the dry film plates and the upper surface and the lower surface of the drilling hole and is used for protecting the cleanliness of the edge of the drilling hole. When the sealing gasket is used, the dry film plate is sealed on the plate main body above the drilling hole, and then the sealing gasket is arranged in a gap between the surface of the dry film plate and the surface of the plate main body, so that the sealed drilling hole is in a sealed state, resin ink in the resin hole plugging process is prevented from penetrating into the drilling hole without the resin hole plugging, and the phenomenon that the service performance of the PCB is influenced due to the blockage of the drilling hole in the processing process is avoided.

The technical scheme of the utility model is further described in detail below with reference to the accompanying drawings and the examples.

[ description of the drawings ]

FIG. 1 is a schematic cross-sectional view of a resin plug hole structure of a PCB in the present utility model;

fig. 2 is a schematic view of fig. 1 with a partial enlargement.

[ detailed description ] of the utility model

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear and obvious, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1 and 2, a first embodiment of a hole plugging structure of a PCB board resin is described below, which includes a board main body and a hole plugging structure.

The hole plugging structure comprises a dry film plate 2 which is respectively arranged on the upper surface and the lower surface of a drilling hole 1 of the plate main body, and a sealing gasket 3 which is arranged between the surface of the dry film plate 2 and the upper surface and the lower surface of the drilling hole 1 and is used for protecting the cleanliness of the edge of the drilling hole 1. The pore-filling structure is mainly used for preventing resin ink from penetrating.

The dry film plate 2 is made of dry film materials, the thickness of the dry film plate 2 is larger than 38um, and the width of the dry film plate 2 is larger than 0.025 mm of the diameter length of the sealed minimum drilling hole 1. Because the dry film material has low cost, the dry film material is very easy to obtain in a conventional way, and is convenient for subsequent procedures such as subsequent exposure, development and the like. When the width of the dry film plate 2 is larger than the diameter length of the drilling hole 1 by 0.025 mm, the hole position of the drilling hole 1 can be ensured to be completely sealed. When the thickness of the dry film plate 2 is 38um, the dry film is ensured to have sufficient adhesion without rupture in the plug holes of the subsequent process.

The board body includes a copper layer 4 provided at the periphery, and an insulating body 5 provided inside the copper layer 4. A plurality of holes 1 are formed on the copper layer 4, and the gap distance between the holes 1 and the holes 1 is smaller than 0.5 millimeter.

When the PCB board is used, the dry film board 2 is sealed on the board main body above the drilling holes 1, and then the sealing gasket 3 is placed in a gap between the surface of the dry film board 2 and the surface of the board main body, so that the sealed drilling holes 1 are in a sealed state, resin ink in the process of plugging holes by resin is prevented from penetrating into the drilling holes 1 without the need of plugging holes by the resin, and the phenomenon that the service performance of the PCB board is influenced due to the blockage of the drilling holes 1 in the process of processing is avoided.

In the embodiment of the present disclosure, the working principle of hole sealing of the dry film board is that the dry film board 2 is pasted on the two sides before the resin is plugged, and then exposed and developed, the drilled holes 1 without the resin is plugged by the dry film board 2 on the two sides, so that the resin ink is prevented from penetrating into the hole sites of the drilled holes 1 without the resin plug in the process of resin hole racing and baking, and the hollow positions such as the drilled holes, slots and the like without the resin plug are ensured not to be polluted.

The second embodiment is different from the first embodiment in that the hole plugging structure includes a hole plugging body directly plugged into the hole, and a sealing ring is disposed at the intersection of the hole plugging body and the hole. The technical effects described in the first embodiment can be achieved as well.

The preferred embodiments of the present utility model have been described above with reference to the accompanying drawings, and thus do not limit the scope of the claims of the present utility model. Any modifications, equivalent substitutions and improvements made by those skilled in the art without departing from the scope and spirit of the present utility model shall fall within the scope of the appended claims.

Claims

1. A PCB resin plug hole structure comprises a board main body, a plurality of drilling holes arranged on the board main body; the method is characterized in that: be provided with the jack structure that is used for preventing resin ink infiltration in the drilling, this jack structure is including setting up the dry membrane board in the drilling upper and lower surface of board main part respectively to and set up the sealing washer that is used for protecting drilling edge cleanliness between dry membrane board surface and drilling upper and lower surface.

2. The PCB resin plug hole structure of claim 1, wherein: the hole plugging structure comprises a drilling plug body which is directly plugged into the inside of a drilling hole, and a sealing ring which is arranged at the intersection of the drilling plug body and the drilling hole.

3. The PCB resin plug hole structure of claim 1, wherein: the dry film plate is made of a dry film material, the thickness of the dry film plate is larger than 38um, and the width of the dry film plate is larger than 0.025 mm of the diameter length of the minimum sealed drilling hole.

4. The PCB resin plug hole structure of claim 1, wherein: the plate body comprises a copper layer arranged on the periphery and an insulating body arranged inside the copper layer.

5. The PCB resin plug hole structure of claim 1, wherein: the clearance distance between the drill holes is less than 0.5 mm.