A kind of phenolic acid isolation paperboard for circuit board blind slot milling

Abstract

The utility model discloses a kind of for the blind slot of circuit board milling phenolic acid paperboard, comprising: phenolic acid paperboard;Limiting block is symmetrically arranged in phenolic acid paperboard;Polyurethane corrugated board is symmetrically arranged on phenolic acid paperboard and abuts at limiting block;Copper wire is linear array in polyurethane corrugated board.The utility model provides for the blind slot of circuit board milling phenolic acid paperboard, when external article hits on polyurethane corrugated board, impact force is buffered and reduced by the corrugation on polyurethane corrugated board, so that polyurethane corrugated board can better protect phenolic acid paperboard, when there is sharp article hits on polyurethane corrugated board, by the multiple copper wire installed in polyurethane corrugated board, sharp object can be intercepted, avoid sharp object puncture polyurethane corrugated board to cause damage to phenolic acid paperboard, not only improve the impact resistance of phenolic acid paperboard, but also can reduce product damage rate.

Description

Technical Field

[0001] This utility model relates to the field of phenolic paperboard technology, and more specifically to a phenolic paperboard for milling blind grooves on circuit boards. Background Technology

[0002] In the blind slot milling process of printed circuit boards (PCBs), phenolic paperboard, as a key auxiliary material, must withstand the impact load generated by the high-speed cutting of the milling cutter and the impact of metal chips.

[0003] However, existing phenolic paperboard generally suffers from insufficient impact resistance: it is made of cellulose paper as the base material and is significantly brittle after being impregnated and cured with phenolic resin. When it is hit by an object, it is prone to cracking or local damage. Especially in stress concentration areas such as the edge of blind slots, cracks may extend into the circuit board, causing conductor breakage or insulation failure, which seriously affects the product qualification rate.

[0004] Therefore, there is a need to provide a phenolic paperboard for milling blind slots on circuit boards to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a phenolic paperboard for milling blind grooves on circuit boards, thereby solving the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a phenolic paperboard for milling blind grooves on circuit boards, comprising:

[0007] Phenolic paperboard;

[0008] symmetrically arranged limiting blocks within the phenolic paperboard;

[0009] The polyurethane corrugated plates are symmetrically arranged on the phenolic paperboard and abut against the limiting blocks:

[0010] Copper wires arranged in a linear array within a polyurethane corrugated plate;

[0011] A copper sheet that is fixedly installed inside a phenolic paperboard and abuts against a polyurethane corrugated board.

[0012] Preferably, the limiting block has a groove, and a glass fiber block is fixedly installed in the groove.

[0013] Preferably, the sidewall of the polyurethane corrugated plate has a linear array of mounting holes, and copper wires are fixedly connected in the mounting holes.

[0014] Preferably, an aluminum foil layer is fixedly installed on the end face of the polyurethane corrugated plate.

[0015] In the above technical solution, the phenolic paperboard for milling blind grooves on circuit boards provided by this utility model has the following beneficial effects:

[0016] This invention, by incorporating phenolic resin paperboard, limiting blocks, polyurethane corrugated plates, copper wires, and copper sheets, effectively improves the impact resistance of phenolic resin paperboard. The polyurethane corrugated plates symmetrically positioned on both ends of the phenolic resin paperboard block impacts from external objects, providing protection. When an external object strikes the polyurethane corrugated plate, the corrugations cushion and reduce the impact force, resulting in better protection. Furthermore, the phenolic resin paperboard contains internal... The installed limiting blocks support the two polyurethane corrugated sheets, making them more impact-resistant. Furthermore, the copper sheets inside the phenolic resin paperboard significantly increase the support area between the two sheets, further enhancing their impact resistance. When a sharp object impacts the corrugated sheet, multiple copper wires within the sheet intercept the object, preventing it from piercing the corrugated sheet and damaging the phenolic resin paperboard. This not only improves the impact resistance of the phenolic resin paperboard but also reduces product damage rates.

[0017] This invention improves the supporting force of the limiting block by setting grooves and glass fiber blocks.

[0018] This invention, by providing mounting holes, allows for the convenient installation of copper wires into the polyurethane corrugated plate.

[0019] This invention improves the waterproof, moisture-proof, and corrosion-resistant properties of phenolic paperboard by adding an aluminum foil layer. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Fig. 2 This is a schematic diagram of the cross-sectional structure of the limiting block of this utility model;

[0023] Fig. 3 This is a schematic diagram of the impact-resistant layer structure of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Phenolic paperboard; 2. Copper sheet; 3. Groove; 4. Limiting block; 5. Fiberglass block; 6. Polyurethane corrugated board; 7. Mounting hole; 8. Copper wire; 9. Aluminum foil layer. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] like Figs. 1-3 As shown, a phenolic paperboard for milling blind grooves on a circuit board includes:

[0028] 1. Phenolic paperboard;

[0029] Limiting blocks 4 are symmetrically arranged within the phenolic paperboard 1;

[0030] The polyurethane corrugated plate 6 is symmetrically arranged on the phenolic paperboard 1 and abuts against the limiting block 4:

[0031] Copper wires 8 arranged in a linear array within the polyurethane corrugated plate 6;

[0032] The copper sheet 2 is fixedly installed inside the phenolic paperboard 1 and abuts against the polyurethane corrugated board 6.

[0033] Specifically, by installing polyurethane corrugated plates 6 on the upper and lower end faces of the phenolic paperboard 1, the polyurethane corrugated plates 6 can block external objects from impacting the phenolic paperboard 1, thereby absorbing the impact force and reducing the damage to the phenolic paperboard 1. Furthermore, by incorporating linearly arrayed copper wires 8 within the polyurethane corrugated plates 6, the blocking effect of the copper wires 8 is enhanced. When sharp objects impact the polyurethane corrugated plates 6, the copper wires 8 can intercept the sharp objects, preventing them from penetrating the polyurethane corrugated plates 6 and causing damage to the phenolic paperboard 1. The limiting blocks 4 installed within the phenolic paperboard 1 support the two polyurethane corrugated plates 6, further increasing their impact resistance. The copper sheets 2 installed within the phenolic paperboard 1 connect to the two polyurethane corrugated plates 6, increasing the support area between them and further improving the impact resistance of the polyurethane corrugated plates 6.

[0034] In the above embodiment, the polyurethane corrugated plates 6 symmetrically arranged on both ends of the phenolic paperboard 1 block the impact of external objects, thus protecting the phenolic paperboard 1. When an external object impacts the polyurethane corrugated plate 6, the corrugations on the polyurethane corrugated plate 6 buffer and reduce the impact force, allowing the polyurethane corrugated plate 6 to better protect the phenolic paperboard 1. Furthermore, the limiting blocks 4 installed inside the phenolic paperboard 1 support the two polyurethane corrugated plates 6, making the polyurethane corrugated plates 6 more impact-resistant. The copper sheets 2 installed inside the phenolic paperboard 1 can significantly increase the support area between the two polyurethane corrugated plates 6, making the polyurethane corrugated plates 6 more impact-resistant. When a sharp object impacts the polyurethane corrugated plate 6, the multiple copper wires 8 installed inside the polyurethane corrugated plate 6 can intercept the sharp object, preventing it from piercing the polyurethane corrugated plate 6 and causing damage to the phenolic paperboard 1. This not only improves the impact resistance of the phenolic paperboard 1 but also reduces the product damage rate.

[0035] As a further embodiment of this utility model, a groove 3 is provided in the limiting block 4, and a glass fiber block 5 is fixedly installed in the groove 3.

[0036] Specifically, by installing a fiberglass block 5 in the groove 3 within the limiting block 4, the fiberglass block 5 can improve the supporting force of the limiting block 4, prevent the limiting block 4 from deforming when the impact force is too large, and improve the impact resistance of the polyurethane corrugated plate 6.

[0037] As another embodiment further provided by this utility model, the side wall of the polyurethane corrugated plate 6 is provided with mounting holes 7 arranged in a linear array, and copper wires 8 are fixedly connected in the mounting holes 7.

[0038] Specifically, by opening mounting holes 7 in a linear array on the polyurethane corrugated plate 6, it is easier to install copper wires 8, thus improving the efficiency of installing copper wires 8 inside the polyurethane corrugated plate 6.

[0039] As another embodiment provided in this utility model, an aluminum foil layer 9 is fixedly installed on the end face of the polyurethane corrugated plate 6.

[0040] Specifically, by installing an aluminum foil layer 9 on the end face of the polyurethane corrugated board 6, the aluminum foil layer 9 can improve the waterproof, moisture-proof and corrosion-resistant properties of the phenolic paperboard 1.

[0041] Working principle: By installing polyurethane corrugated plates 6 at both ends of the phenolic paperboard 1, the corrugated structure absorbs the impact force generated by external objects, reducing damage to the phenolic paperboard 1. When a sharp object hits the polyurethane corrugated plate 6, the copper wire 8 installed inside the polyurethane corrugated plate 6 enhances the blocking effect, allowing the copper wire 8 to intercept the sharp object and prevent it from penetrating the polyurethane corrugated plate 6 and causing damage to the phenolic paperboard 1. The limiting block 4 installed inside the paperboard provides support for the polyurethane corrugated plate 6, improving its impact resistance. Furthermore, by installing glass fiber blocks 5 in the grooves 3 of the limiting block 4, the supporting force of the limiting block 4 is further enhanced, preventing deformation of the limiting block 4 under pressure. By installing copper sheets 2 inside the phenolic paperboard 1, the support area between the two polyurethane corrugated plates 6 is increased, and the deformation, bending, or cracking of the phenolic paperboard 1 is prevented, thus maintaining the overall stability of the equipment. In addition, by installing an aluminum foil layer 9 on the end face of the polyurethane corrugated board 6, the aluminum foil layer 9 can improve the waterproof, moisture-proof and corrosion-resistant properties of the phenolic paperboard 1.

[0042] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A phenolic paperboard for milling blind grooves on circuit boards, characterized in that, include: Phenolic paperboard (1); Limiting blocks (4) are symmetrically arranged inside the phenolic paperboard (1); A polyurethane corrugated board (6) symmetrically arranged on the phenolic paperboard (1) and abutting against the limiting block (4): Copper wires (8) arranged in a linear array within the polyurethane corrugated plate (6); A copper sheet (2) is fixedly installed inside the phenolic paperboard (1) and abuts against the polyurethane corrugated board (6).

2. The phenolic paperboard for milling blind grooves on circuit boards according to claim 1, characterized in that, The limiting block (4) has a groove (3) inside, and a glass fiber block (5) is fixedly installed in the groove (3).

3. The phenolic paperboard for milling blind grooves on circuit boards according to claim 1, characterized in that, The sidewall of the polyurethane corrugated plate (6) is provided with mounting holes (7) arranged in a linear array, and copper wires (8) are fixedly connected in the mounting holes (7).

4. The phenolic paperboard for milling blind grooves on a circuit board according to claim 3, characterized in that, An aluminum foil layer (9) is fixedly installed on the end face of the polyurethane corrugated plate (6).

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