Composite ceramic plate for grinding fine circuit of PCB (Printed Circuit Board)

Abstract

The utility model relates to the technical field of grinding plates, in particular to a composite ceramic plate for PCB fine line grinding, which comprises a composite ceramic plate and an anti-skid bracket, an accommodating cavity for accommodating the composite ceramic plate is arranged at the top of the anti-skid bracket, a pressure-proof protection pad is fixedly connected to the bottom of the inner wall of the anti-skid bracket, and the pressure-proof protection pad is fixedly connected to the bottom of the inner wall of the anti-skid bracket. The top and the bottom of the composite ceramic plate are respectively provided with a sawtooth-shaped structure, and the sawtooth-shaped structures are used for grinding the fine circuit of the PCB. The sawtooth-shaped structures are respectively arranged at the top and the bottom of the composite ceramic plate, so that both sides of the composite ceramic plate can be used for grinding, and after one side of the composite ceramic plate is damaged by grinding, the other side of the composite ceramic plate can be used for grinding; and meanwhile, the composite ceramic plate is positioned in the anti-skid bracket during grinding, so that the composite ceramic plate can be prevented from sliding when the movable PCB on the composite ceramic plate is subjected to fine line grinding.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding plates, in particular to a composite ceramic plate for grinding PCB fine circuits. Background Art

[0002] A grinding plate is a type of grinding equipment that uses abrasive particles coated or pressed on a grinding plate to ensure the accuracy and surface finish of the workpiece. The grinding plate and the workpiece move relative to each other under a certain pressure to perform finishing processing on the machined surface. The grinding plates include grinding plates made of various different materials such as metal and ceramic.

[0003] In the prior art, there is a grinding plate for improving the surface gloss of a measuring tool, as proposed in patent application number "CN201320197402.6". The plate is made of industrial pressed pure aluminum with a surface roughness of Ra0.032um. This aluminum grinding plate is used to perform final fine grinding on the planes of various measuring instruments and measuring surfaces of measuring tools, thereby improving the finish accuracy of the ground surface.

[0004] However, the grinding plate proposed in the above patent application can only be used for grinding on one side when grinding fine lines on PCB, and has a short service life. In addition, the grinding plate lacks anti-slip ability. When the PCB is moved on the grinding plate for grinding, the grinding plate is prone to sliding displacement, which is inconvenient to use. Utility Model Content

[0005] The purpose of the utility model is to provide a composite ceramic plate for grinding fine circuits of PCB to solve the problems raised in the above-mentioned background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A composite ceramic plate for grinding fine lines on a PCB comprises a composite ceramic plate and an anti-skid bracket, wherein a chamber for accommodating the composite ceramic plate is provided on the top of the anti-skid bracket, an anti-pressure protection pad is fixedly connected to the bottom of the inner wall of the anti-skid bracket, and a serrated structure is provided on the top and bottom of the composite ceramic plate for grinding fine lines on the PCB.

[0008] The composite ceramic plate includes a middle substrate, the top and bottom of the middle substrate are respectively connected to a first ceramic grinding plate and a second ceramic grinding plate, the first ceramic grinding plate and the second ceramic grinding plate are connected to a wear-resistant coating on the side away from the middle substrate, and a honeycomb cavity is arranged inside the middle substrate.

[0009] Preferably, an elastic connection layer is provided between the middle substrate and the first ceramic grinding plate, and between the middle substrate and the second ceramic grinding plate. The thickness of the elastic connection layer is 1 mm, and the thickness of the wear-resistant coating is 0.6 mm.

[0010] Preferably, an arc-shaped clamping piece is fixedly connected to the inner wall of the accommodating chamber of the anti-slip bracket, and an arc-shaped clamping groove used in conjunction with the arc-shaped clamping piece is provided on the composite ceramic plate.

[0011] Preferably, a movable groove is provided in the anti-slip bracket, a plurality of negative pressure adsorption holes are provided on the top of the inner wall of the movable groove, and a movable plug which can move horizontally is provided inside the movable groove, and the movable plug is used to seal the inside of the movable groove.

[0012] Preferably, a control rod is fixedly connected to one side of the anti-slip bracket, the top of the control rod is bent downward, a movable plug rod is fixedly connected to one side of the control rod, the movable plug rod is located inside the movable groove, and a movable connecting shaft is fixedly connected between the movable plug rod and the movable plug.

[0013] Preferably, an anti-skid unit is provided at the bottom of the anti-skid bracket, and the anti-skid unit comprises a rectangular groove provided at the bottom of the anti-skid bracket, and anti-skid convex particles are fixedly connected in the rectangular groove, and shifting notches are provided on both sides of the anti-skid bracket.

[0014] Beneficial effects of the utility model:

[0015] The utility model provides sawtooth mechanisms on the top and bottom of the composite ceramic plate, so that both sides of the composite ceramic plate can be used for grinding. After one side of the composite ceramic plate is damaged by grinding, the other side can be used for grinding, thereby improving the service life of the composite ceramic plate. At the same time, the composite ceramic plate is positioned inside the anti-skid bracket during grinding, so that the composite ceramic plate can be prevented from sliding when fine circuits on a movable PCB board on the composite ceramic plate are ground. The side of the composite ceramic plate that is not ground is located in the anti-skid bracket and contacts the anti-pressure protection pad, so that the sawtooth structure on the other side can be prevented from being damaged due to the pressure generated when the composite ceramic plate is ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This utility model Figure 1 Schematic diagram of the structure of the composite ceramic plate;

[0019] Figure 3 This utility model Figure 1A schematic diagram of the structure of the bottom of the middle anti-slip bracket;

[0020] Figure 4 This utility model Figure 1 A cross-sectional view of the middle anti-slip bracket;

[0021] Figure 5 This utility model Figure 4 A magnified view of the structure at center.

[0022] The reference numerals in the figures are as follows:

[0023] 1. Composite ceramic plate, 101. Middle substrate, 102. Second ceramic grinding plate, 103. Second ceramic grinding plate, 104. Wear-resistant coating, 105. Elastic connecting layer, 2. Anti-skid bracket, 3. Anti-pressure protection pad, 4. Arc clamping piece, 5. Arc clamping groove, 6. Movable groove, 7. Negative pressure adsorption hole, 8. Movable plug, 9. Control pull rod, 10. Movable plug rod, 11. Movable connecting shaft, 12. Anti-skid convex particles, 13. Toggle notch. DETAILED DESCRIPTION

[0024] 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 of 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.

[0025] A composite ceramic plate for PCB fine line grinding comprises a composite ceramic plate 1 and an anti-slip bracket 2, wherein a receiving chamber for receiving the composite ceramic plate 1 is provided at the top of the anti-slip bracket 2, an anti-pressure protection pad 3 is fixedly connected to the bottom of the inner wall of the anti-slip bracket 2, and a serrated structure is provided at the top and bottom of the composite ceramic plate 1 for PCB fine line grinding.

[0026] The composite ceramic plate 1 includes a middle substrate 101, the top and bottom of the middle substrate 101 are respectively connected to a first ceramic grinding plate 102 and a second ceramic grinding plate 103, the first ceramic grinding plate 102 and the second ceramic grinding plate 103 are connected to a wear-resistant coating 104 on the side away from the middle substrate 101, and a honeycomb cavity is arranged inside the middle substrate 101.

[0027] like Figure 1 and Figure 2The wear-resistant coating 104 is composed of the following raw materials in percentage by mass: 20% to 25% polytetrafluoroethylene, 5% to 10% phenolic resin, 7% to 15% additives, 7% to 10% inorganic compounds, 7% to 15% r pigments, 4% to 15% solvents, 5% to 10% mixed hydrocarbons, and 5% to 10% butyrolactone. The anti-slip bracket 2 is made of anti-slip material, and the composite ceramic plate 1 can be placed just inside the accommodating chamber at the top of the anti-slip bracket 2. When grinding fine PCB lines, it is only necessary to fit the PCB to be ground to the surface of the composite ceramic plate 1 for movement. The thickness of the first ceramic grinding plate 102 and the second ceramic grinding plate 103 are consistent.

[0028] An elastic connection layer 105 is provided between the middle substrate 101 and the first ceramic grinding plate 102 and between the middle substrate 101 and the second ceramic grinding plate 103. The thickness of the elastic connection layer 105 is 1 mm, and the thickness of the wear-resistant coating 104 is 0.6 mm.

[0029] like Figure 1 and Figure 2 By setting the elastic connecting layer 105, elastic contact between the first ceramic grinding plate 102, the second ceramic grinding plate 103 and the middle substrate 101 can be avoided. The middle substrate 101 with the honeycomb cavity can reduce the weight of the composite ceramic plate 1 and ensure the supporting strength of the middle substrate 101.

[0030] An arc-shaped clamping piece 4 is fixedly connected to the inner wall of the accommodating chamber of the anti-slip bracket 2 , and an arc-shaped clamping groove 5 used in conjunction with the arc-shaped clamping piece 4 is provided on the composite ceramic plate 1 .

[0031] like Figure 1 When the composite ceramic plate 1 is located in the accommodating cavity at the top of the anti-slip bracket 2, the arc-shaped clamping member 4 can be clamped into the clamping groove 5, thereby clamping and positioning the composite ceramic plate 1.

[0032] The anti-slip bracket 2 is provided with a movable groove 6 , a plurality of negative pressure adsorption holes 7 are provided on the top of the inner wall of the movable groove 6 , and a movable plug 8 which can move horizontally is provided inside the movable groove 6 , and the movable plug 8 is used to seal the inside of the movable groove 6 .

[0033] like Figure 1 and Figure 4 An opening is also correspondingly provided on the pressure-proof protection pad 3 above the negative pressure adsorption hole 7 .

[0034] A control rod 9 is fixedly connected to one side of the anti-slip bracket 2, and the top of the control rod 9 is bent downward. A movable plug rod 10 is fixedly connected to one side of the control rod 9. The movable plug rod 10 is located inside the movable groove 6, and a movable connecting shaft 11 is fixedly connected between the movable plug rod 10 and the movable plug 8.

[0035] like Figure 1 , Figure 4 and Figure 5 When the composite ceramic plate 1 is located inside the anti-slip bracket 2, the control rod 9 can be pulled away from the anti-slip bracket 2, and the control rod 9 drives the movable plug 8 to move together through the movable plug rod 10 and the movable connecting shaft 11. The movement of the movable plug 8 will evacuate air through the negative pressure adsorption hole 7, and negative pressure adsorption is performed on the bottom of the composite ceramic plate 1, thereby improving the stability of the composite ceramic plate 1 inside the anti-slip bracket 2;

[0036] On the contrary, pushing the control rod 9 in the direction close to the anti-slip bracket 2 can eventually push the movable plug 8, and the movable plug 8 pushes the air out through the negative pressure adsorption hole 7 and no longer adsorbs the bottom of the composite ceramic plate 1.

[0037] The bottom of the anti-skid bracket 2 is provided with an anti-skid unit, which includes a rectangular groove provided at the bottom of the anti-skid bracket 2 , in which an anti-skid convex particle 12 is fixedly connected, and two sides of the anti-skid bracket 2 are provided with a toggle notch 13 .

[0038] like Figure 1 and Figure 2 By providing the anti-skid convex particles 12, the anti-skid ability of the bottom of the anti-skid bracket 2 can be improved, so that the anti-skid bracket 2 has a better anti-skid ability when using the composite ceramic plate to grind the PCB fine circuit.

[0039] Compared with the related art, the composite ceramic plate for PCB fine circuit grinding provided by the utility model has the following beneficial effects:

[0040] The utility model provides sawtooth mechanisms on the top and bottom of the composite ceramic plate 1, so that both sides of the composite ceramic plate 1 can be used for grinding. After one side of the composite ceramic plate 1 is damaged by grinding, the other side can be used for grinding, thereby improving the service life of the composite ceramic plate 1. At the same time, the composite ceramic plate 1 is positioned inside the anti-slip bracket 2 during grinding, so that the composite ceramic plate 1 can be prevented from sliding when fine circuits on the movable PCB board on the composite ceramic plate 1 are ground. The side of the composite ceramic plate 1 that is not ground is located in the anti-slip bracket 2 and contacts the anti-pressure protection pad 3, so that the pressure generated when the composite ceramic plate 1 is ground can be prevented from causing damage to the sawtooth structure on the other side.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A composite ceramic plate for PCB fine circuit grinding, comprising a composite ceramic plate (1) and an anti-slip bracket (2), characterized in that: The top of the anti-slip bracket (2) is provided with a receiving chamber for receiving the composite ceramic plate (1); the bottom of the inner wall of the anti-slip bracket (2) is fixedly connected with an anti-pressure protection pad (3); the top and bottom of the composite ceramic plate (1) are both provided with a sawtooth structure for grinding fine lines of the PCB; The composite ceramic plate (1) comprises a middle substrate (101), the top and bottom of the middle substrate (101) are respectively connected to a first ceramic grinding plate (102) and a second ceramic grinding plate (103), the first ceramic grinding plate (102) and the second ceramic grinding plate (103) are both connected to a wear-resistant coating (104) on a side away from the middle substrate (101), and a honeycomb cavity is provided inside the middle substrate (101).

2. A composite ceramic plate for PCB fine circuit grinding according to claim 1, characterized in that: An elastic connection layer (105) is provided between the middle substrate (101) and the first ceramic grinding plate (102), and between the middle substrate (101) and the second ceramic grinding plate (103); the thickness of the elastic connection layer (105) is 1 mm, and the thickness of the wear-resistant coating (104) is 0.6 mm.

3. The composite ceramic plate for PCB fine circuit grinding according to claim 1, characterized in that: An arc-shaped clamping piece (4) is fixedly connected to the inner wall of the accommodating chamber of the anti-slip bracket (2), and an arc-shaped clamping groove (5) for use with the arc-shaped clamping piece (4) is provided on the composite ceramic plate (1).

4. The composite ceramic plate for PCB fine circuit grinding according to claim 1, characterized in that: The anti-slip bracket (2) is provided with a movable groove (6), the top of the inner wall of the movable groove (6) is provided with a plurality of negative pressure adsorption holes (7), and a movable plug (8) that can move horizontally is provided inside the movable groove (6), and the movable plug (8) is used to seal the inside of the movable groove (6).

5. The composite ceramic plate for PCB fine circuit grinding according to claim 4, characterized in that: A control rod (9) is fixedly connected to one side of the anti-slip bracket (2), the top of the control rod (9) is bent downward, a movable plug rod (10) is fixedly connected to one side of the control rod (9), the movable plug rod (10) is located inside the movable groove (6), and a movable connecting shaft (11) is fixedly connected between the movable plug rod (10) and the movable plug (8).

6. The composite ceramic plate for PCB fine circuit grinding according to claim 1, characterized in that: The bottom of the anti-slip bracket (2) is provided with an anti-slip unit, which comprises a rectangular groove provided at the bottom of the anti-slip bracket (2), an anti-slip convex particle (12) is fixedly connected in the rectangular groove, and a toggle notch (13) is provided on both sides of the anti-slip bracket (2).

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