CN215757684U

CN215757684U - Adjustable anode shielding plate for improving uniformity of copper plating

Info

Publication number: CN215757684U
Application number: CN202122162213.2U
Authority: CN
Inventors: 王均臣; 王春雪; 张伦亮; 李华团
Original assignee: Jiangxi Jingwang Precision Circuit Co ltd
Current assignee: Jiangxi Jingwang Precision Circuit Co ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-02-08
Anticipated expiration: 2031-09-08

Abstract

The utility model discloses an adjustable anode shielding plate for improving copper plating uniformity, which comprises a shielding plate and a sleeve rod, wherein a plurality of through holes with gradually increased apertures at the periphery towards the inner side are formed in the shielding plate; four corners of the shielding plate are provided with sleeve holes matched with the sleeve rods; the sleeve rod is provided with a plurality of bayonets matched with the sleeve holes, and one end of the sleeve rod is provided with a clamping sleeve matched with the titanium basket. The utility model can reduce the current distribution in the high current region and enhance the uniformity.

Description

Adjustable anode shielding plate for improving uniformity of copper plating

Technical Field

The utility model relates to the technical field of circuit boards, in particular to an adjustable anode shielding plate for improving copper plating uniformity.

Background

With the development of the electronic industry; many electroplating processes in the printed circuit board industry use electroplating processes; the electroplating uniformity of the soluble anode of the current VCP continuous electroplating line is only more than 85 percent; when the hole copper is required to be more than or equal to 25 um; the range of the extreme difference R value (Max-Min) is between 10 and 12 um; the yield uniformity is only 87% or more at the sacrifice even with a small plating current (about 10-11ASF) to reduce the range and improve the uniformity.

Disclosure of Invention

The utility model aims to solve the problems that: the adjustable anode shielding plate for improving the uniformity of copper plating is provided, and the current distribution in a high-current region can be reduced; the uniformity is enhanced.

The technical scheme provided by the utility model for solving the problems is as follows: an adjustable anode shielding plate for improving the uniformity of copper plating comprises a shielding plate and a loop bar, wherein the shielding plate is provided with a plurality of through holes of which the diameters of the through holes are gradually increased from the periphery to the inner side; four corners of the shielding plate are provided with sleeve holes matched with the sleeve rods; the sleeve rod is provided with a plurality of bayonets matched with the sleeve holes, and one end of the sleeve rod is provided with a clamping sleeve matched with the titanium basket.

Preferably, the shielding plate is made of a PP plate, and the thickness of the shielding plate is 5 mm.

Preferably, the diameter of the trepan is 7.2 mm.

Preferably, the length of the shielding plate is 500mm, and the width of the shielding plate is 400 mm.

Preferably, the number of the bayonets is 3, and the bayonets are uniformly distributed on the loop bar at intervals.

Preferably, the width of the bayonet is 10.2mm, and the depth is 3 mm.

Compared with the prior art, the utility model has the advantages that:

1. the same current density is used by adopting the utility model; the electroplating uniformity can be improved by 5%; the electroplating uniformity is improved from the original more than 85 percent to the current more than 90 percent;

2. under the condition of the same current density, the copper hole with the thickness of 25um is formed; the electroplating range is reduced from the original 10-12um to the current 7-9um, so that the cost is saved;

3. the adjustable distance between the shielding plate and the surface of the PCB can be adjusted according to the current density and the anode area, and the optimal distance between the shielding plate and the PCB can be adjusted.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.

FIG. 1 is a schematic view of a shield of the present invention;

fig. 2 is a schematic view of the shield plate of the present invention engaged with a loop bar.

The attached drawings are marked as follows: 1. the device comprises a shielding plate, 2, a through hole, 3, a trepanning, 4, a loop bar, 5, a bayonet, 6, a cutting sleeve, 7 and a titanium basket.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present invention can be fully understood and implemented.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the utility model, "a number" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

The specific embodiment of the utility model is shown in fig. 1-2, an adjustable anode shielding plate 1 for improving copper plating uniformity comprises a shielding plate 1 and a loop bar 4, wherein a plurality of through holes 2 with gradually enlarged apertures on the inner side at the periphery are arranged on the shielding plate 1; four corners of the shielding plate 1 are provided with sleeve holes 3 matched with the sleeve rods 4; a plurality of bayonets 5 matched with the trepanning holes 3 are arranged on the loop bar 4, and a clamping sleeve 6 matched with the titanium basket 7 is arranged at one end of the loop bar 4.

More specifically, the diameter of the through hole on the shielding plate is from 5mm to 7mm to 9 mm.

As another embodiment of the present invention, the shielding plate 1 is made of PP plate, and the thickness thereof is 5 mm.

As another embodiment of the present invention, the diameter of the trepan 3 is 7.2 mm.

As another embodiment of the present invention, the shielding plate 1 has a length of 500mm and a width of 400 mm.

As another embodiment of the present invention, 3 of the bayonets 5 are uniformly spaced on the shank 4. The shield plate is matched with different bayonets on the loop bar, so that the distance between the shield plate and the PCB is adjusted.

As another embodiment of the present invention, the width of the bayonet 5 is 10.2mm and the depth is 3 mm.

The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the scope of the utility model as defined by the independent claims are intended to be embraced therein.

Claims

1. The utility model provides an anode shield with adjustable improve copper facing homogeneity which characterized in that: the shielding device comprises a shielding plate (1) and a loop bar (4), wherein a plurality of through holes (2) with gradually enlarged apertures on the periphery towards the inner side are formed in the shielding plate (1); four corners of the shielding plate (1) are provided with sleeve holes (3) matched with the sleeve rods (4); the sleeve rod (4) is provided with a plurality of bayonets (5) matched with the sleeve holes (3), and one end of the sleeve rod (4) is provided with a clamping sleeve (6) matched with the titanium basket (7).

2. The adjustable anode shielding plate for improving uniformity of copper plating according to claim 1, wherein: the shielding plate (1) is made of a PP plate, and the thickness of the shielding plate is 5 mm.

3. The adjustable anode shielding plate for improving uniformity of copper plating according to claim 1, wherein: the diameter of the trepanning (3) is 7.2 mm.

4. The adjustable anode shielding plate for improving uniformity of copper plating according to claim 1, wherein: the length of the shielding plate (1) is 500mm, and the width of the shielding plate is 400 mm.

5. The adjustable anode shielding plate for improving uniformity of copper plating according to claim 1, wherein: the bayonets (5) have 3 and even interval distribution in loop bar (4).

6. The adjustable anode shielding plate for improving uniformity of copper plating according to claim 1, wherein: the width of the bayonet (5) is 10.2mm, and the depth is 3 mm.