Jig for improving browning efficiency of copper block

Abstract

The utility model discloses a jig for improving copper block brownification efficiency, which comprises a plurality of copper block units arranged in a matrix, each copper block unit comprises a plurality of small units arranged in a matrix, each small unit comprises an upper cover plate and a lower cover plate, a plurality of uniformly distributed through holes are arranged in the middle of the upper cover plate and the middle of the lower cover plate, and the through holes are arranged in the middle of the upper cover plate and the middle of the lower cover plate. Grooves are formed in the positions, corresponding to the through holes, of the lower surface of the upper cover plate and the upper surface of the lower cover plate; by optimizing the clamp structure, hollowed-out and over-wide and over-dense reinforcing ribs are reduced, the copper block covering density is increased, and the processing efficiency is improved; the copper block is supported through the wavy bottom surface and the triangular platform, the contact between the copper block and the boundary is redesigned, the contact area is reduced, and the browning effect is improved; through the first snap fastener and the second snap fastener, the fixing mode is improved, the copper block is prevented from shifting, the fixing mode is epoxy resin glue which is consistent with an epoxy board resin material, and new impurities cannot be introduced, and liquid medicine cannot be polluted.

Description

Technical Field

[0001] This utility model belongs to the field of printed circuit board technology, specifically relating to a fixture for improving the browning efficiency of copper blocks. Background Technology

[0002] In the printed circuit board (PCB) industry, embedding high thermal conductivity copper blocks is a common method for heat dissipation in high-power PCBs. Before embedding the copper blocks into the PCB and laminating them, the contact surfaces need to be roughened; browning is a commonly used method in the industry. Horizontal browning lines are popular among PCB manufacturers due to their high efficiency; however, because the drive rollers of horizontal browning lines have a large gap, while the embedded copper blocks used in PCBs are small, direct horizontal browning is not possible. Therefore, when batch processing PCBs with embedded copper blocks, specific browning fixtures are required for batch browning of the copper blocks.

[0003] Traditional copper block browning fixtures have the following shortcomings:

[0004] (1) Low density and low efficiency. Due to the excessive hollow structure, the reinforcing ribs between the frames are set too wide and too dense, resulting in low density of copper block coverage on the surface of the fixture.

[0005] (2) Excessive contact between the copper block and the boundary affects the browning effect;

[0006] (3) Fixing is difficult to guarantee. There is no fixing in the central area, and there is a risk that the copper blocks will shift to the adjacent tanks.

[0007] (4) The fixture material contains adhesives that are not resistant to corrosion and temperature, such as steel and stainless steel, which may introduce the risk of impurities.

[0008] (5) The fixing method is complicated and the work efficiency is low, such as multiple screws and buckles that are not connected to the upper and lower covers;

[0009] (6) The thickness of the fixture exceeds the standard, such as the use of hinges or other parts;

[0010] (7) The copper blocks do not have independent grooves, but are mixed in a large groove, resulting in adjacent or even overlapping edges that affect the browning effect. Therefore, a fixture is designed to improve the browning efficiency of copper blocks in order to change the above-mentioned technical defects. Utility Model Content

[0011] (1) Technical problems to be solved

[0012] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a fixture that improves the browning efficiency of copper blocks in order to solve the above-mentioned technical problems.

[0013] (2) Technical solution

[0014] To solve the above-mentioned technical problems, this utility model provides a fixture for improving the browning efficiency of copper blocks, including multiple copper block units arranged in a matrix. Each copper block unit includes multiple smaller units arranged in a matrix. Each smaller unit includes an upper cover plate and a lower cover plate. The middle part of the upper cover plate and the middle part of the lower cover plate are provided with multiple through holes that are evenly distributed. The lower surface of the upper cover plate and the upper surface of the lower cover plate are provided with grooves at positions corresponding to the through holes. The top center of the lower cover plate is provided with a depth control washing area. A triangular platform is formed between adjacent grooves. Copper blocks are provided inside the depth control washing area.

[0015] Preferably, each upper cover plate and each lower cover plate are connected by reinforcing ribs, and the upper and lower reinforcing ribs are snapped together by multiple first snaps.

[0016] Furthermore, raised limiting points are formed at the four corners of the controlled-depth washing area, and the three sides of the triangular platform are all 0.3mm long. The upper and lower surfaces of the copper block are in contact with the corresponding triangular platforms.

[0017] Furthermore, the upper cover and the lower cover are connected by a second snap fastener, which includes a male snap fastener and a female snap fastener that are interlocked.

[0018] Furthermore, both the upper and lower cover plates are made of epoxy board, with a thickness of 1.5mm for both. The male snap fasteners are glued to both sides of the upper cover plate with epoxy resin, and the female snap fasteners are glued to both sides of the lower cover plate with epoxy resin.

[0019] (3) Beneficial effects

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] 1. By optimizing the fixture structure, reducing the number of cutouts and excessively wide and dense reinforcing ribs, and increasing the copper block coverage density, processing efficiency is improved.

[0022] 2. The copper block is supported by a wavy bottom surface and a triangular platform. The contact between the copper block and the boundary is redesigned to reduce the contact area and improve the browning effect.

[0023] 3. The first and second snaps improve the fixing method and prevent the copper block from shifting. The fixing method is epoxy resin glue, which is the same as the epoxy board resin material, so it will not introduce new impurities or contaminate the solution.

[0024] 4. The fixtures are made of epoxy board, a raw material used in PCB factories. It is sturdy, readily available, and does not contaminate the browning agent.

[0025] 5. The fixing method is simplified by using convenient snaps, which are glued to the upper and lower plates of the clamp on both sides, thus improving work efficiency.

[0026] 6. Strictly control the thickness of the upper and lower cover plates, with an overall thickness of 1.5 + 1.5 mm, to prevent plate jamming or other abnormal problems when entering the browning line.

[0027] 7. Set independent grooves for copper blocks to avoid adjacent or overlapping, and ensure browning effect. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a three-dimensional structural diagram of the lower cover plate of a single copper block unit in this utility model;

[0030] Figure 3 This is a top view of a single copper block unit in this utility model;

[0031] Figure 4 In this utility model Figure 3 Schematic diagram of the cross-sectional structure of the middle BB;

[0032] Figure 5 In this utility model Figure 2 Schematic diagram of structure A in the middle.

[0033] The markings in the attached diagram are as follows: 1. Copper block unit; 2. Reinforcing rib; 3. First snap; 4. Upper cover plate; 5. Lower cover plate; 6. Depth control washing area; 7. Protrusion limiting point; 8. Triangular platform; 9. Through hole; 10. Groove; 11. Copper block; 12. Snap male head; 13. Snap female head. Detailed Implementation

[0034] This specific embodiment is a fixture for improving the browning efficiency of copper blocks, and its structural schematic diagram is shown below. Figures 1-5 As shown, the device includes multiple copper block units 1 arranged in a matrix. Each copper block unit 1 includes multiple smaller units arranged in a matrix. Each smaller unit includes an upper cover plate 4 and a lower cover plate 5. The middle of the upper cover plate 4 and the middle of the lower cover plate 5 are provided with multiple evenly distributed through holes 9. The lower surface of the upper cover plate 4 and the upper surface of the lower cover plate 5 are provided with grooves 10 at positions corresponding to the through holes 9. The top center of the lower cover plate 5 is provided with a depth control washing area 6. A triangular platform 8 is formed between adjacent grooves 10. The interior of the depth control washing area 6 is provided with... There is a copper block 11; the inner bottom wall of the controlled depth washing area 6 and the groove 10 together form a wave-shaped structure. The bottom of the trough is provided with a through hole 9, which can quickly drain water and liquid, increase the surface area, and speed up drying. The specific structure is formed by drilling adjacent holes on the top of the lower cover plate 5 using a drill bit with a 120° cutting angle. The remaining small protrusions of the controlled depth drilling are triangular platforms 8 used to support the copper block 11. The remaining thickness is drilled in a row to open through holes 9, which facilitates the passage of chemicals and drying, and can ensure that the contact area of ​​the six sides of the copper block 11 is minimized.

[0035] Each upper cover plate 4 and each lower cover plate 5 are connected by reinforcing ribs 2, and the upper and lower reinforcing ribs 2 are snapped together by multiple first snaps 3; due to the support provided by the bottom wave-shaped protrusion structure, the distance between the reinforcing ribs 2 can be appropriately increased, and the first snaps 3 are set between adjacent copper block units 1.

[0036] In addition, raised limiting points 7 are formed at the four corners of the controlled-depth washing area 6. The three sides of the triangular platform are all 0.3mm long, and the upper and lower surfaces of the copper block 11 are in contact with the corresponding triangular platform 8. This greatly reduces the direct contact area between the copper block 11 and the cover plate, and because the raised part is a pyramid-shaped structure, the strength of the raised part is ensured.

[0037] In addition, the upper cover plate 4 and the lower cover plate 5 are connected by a second snap fastener, which includes a snap fastener male head 12 and a snap fastener female head 13 that are connected to each other; wherein the snap fastener male head 12 and the snap fastener female head 13 are both made of PP material.

[0038] In addition, both the upper cover plate 4 and the lower cover plate 5 are made of epoxy board. The thickness of the upper cover plate 4 and the lower cover plate 5 is 1.5mm. The male snap fastener 12 is bonded to both sides of the upper cover plate 4 with epoxy resin adhesive, and the female snap fastener 13 is bonded to both sides of the lower cover plate 5 with epoxy resin adhesive. The fixture is made of epoxy board material, which is a raw material for PCB factories, sturdy and readily available, and does not contaminate the browning agent. Since the epoxy resin adhesive is made of the same material as the upper cover plate 4 and the lower cover plate 5, it will not introduce new impurities or contaminate the agent.

[0039] By optimizing the fixture structure, reducing the number of hollow and excessively wide and dense reinforcing ribs 2, the coverage density of the copper block 11 is increased, improving processing efficiency. Furthermore, the copper block 11 is supported by a wavy bottom surface and a triangular platform. The contact between the copper block 11 and the boundary is redesigned to reduce the contact area and improve the browning effect. The fixing method is improved by using the first snap 3 and the second snap 3 to prevent the copper block 11 from shifting. The fixing method is epoxy resin glue, which is consistent with the epoxy board resin material and will not introduce new impurities or contaminate the chemical solution. The thickness of the upper cover plate 4 and the lower cover plate 5 is strictly controlled to be 1.5 + 1.5 mm, so that it will not cause abnormal problems such as plate jamming when entering the browning line.

[0040] All technical features in this embodiment can be freely combined according to actual needs.

[0041] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A jig for improving the efficiency of brownification of a copper block, characterized by: The application relates to a copper block unit (1) comprising a plurality of copper block units (1) arranged in a matrix, each of the copper block units (1) comprising a plurality of small units arranged in a matrix, each of the small units comprising an upper cover plate (4) and a lower cover plate (5), the middle part of the upper cover plate (4) and the middle part of the lower cover plate (5) being provided with a plurality of uniformly distributed through holes (9), the lower surface of the upper cover plate (4) and the upper surface of the lower cover plate (5) being provided with grooves (10) at positions corresponding to the through holes (9), the middle part of the top end of the lower cover plate (5) being provided with a depth control washing area (6), triangular platforms (8) being formed between adjacent grooves (10), and the depth control washing area (6) being internally provided with a copper block (11).

2. The jig for improving the efficiency of brown of copper block according to claim 1, wherein: Each of the upper cover plates (4) and each of the lower cover plates (5) is connected through a reinforcing rib (2), and the upper and lower reinforcing ribs (2) are clamped through a plurality of first buckles (3).

3. The jig for improving the efficiency of brown of copper block according to claim 1, wherein: The four corners of the depth control washing area (6) are provided with protruding limiting points (7), the three side lengths of the triangular platform are 0.3 mm, and the upper surface and the lower surface of the copper block (11) are in contact with the corresponding triangular platform (8).

4. The jig for improving the efficiency of brown of copper block according to claim 1, wherein: The upper cover plate (4) and the lower cover plate (5) are clamped through a second buckle, and the second buckle comprises a buckle male head (12) and a buckle female head (13) clamped with each other.

5. The jig for improving the efficiency of brown of copper block according to claim 4, wherein: The upper cover plate (4) and the lower cover plate (5) are both epoxy plate materials, the thickness of the upper cover plate (4) and the thickness of the lower cover plate (5) are both 1.5 mm, the buckle male head (12) is adhered to the two sides of the upper cover plate (4) through epoxy resin, and the buckle female head (13) is adhered to the two sides of the lower cover plate (5) through epoxy resin.

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