Copper deposition hanging basket
By designing an inclined copper sinking hanging basket, the problems of difficulty in discharge of bubbles and poor penetration of chemical liquids during the copper sinking process are solved, and better copper sinking effect and electrical performance are achieved, enhancing production flexibility and benefits.
Patent Information
- Application Number
- CN202421491664.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-27
AI Technical Summary
During the copper depositing process of existing circuit boards, bubbles in the through holes are difficult to naturally discharge, resulting in copper-free zones and circuit breakers. The vertical layout is not conducive to the full penetration and reaction of chemical liquids, affecting the uniformity and integrity of the plating layer.
A tilted copper hanging basket is designed, and the inclined placement of the circuit board is realized through the matching design of the first fixing groove and the second fixing groove, and the inclined placement of the circuit board is achieved by using gravity to help eliminate air bubbles in the through holes, and adapt to circuit boards of different specifications through an adjustable docking structure.
It effectively promotes the flow and reaction of copper sedimentation in the through holes, reduces the copper-free phenomenon, improves the electrical performance of the circuit board, and improves the flexibility and adaptability of production operations, significantly improving production efficiency.
Smart Images
Figure CN222839903U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of copper deposition of circuit boards, in particular to a copper deposition hanging basket. Background Art
[0002] In the field of electronic manufacturing, especially in the production of printed circuit boards, copper plating technology occupies a pivotal position. Copper plating, or chemical copper plating, is a process of forming a continuous and uniform conductive copper layer on the through-hole wall of the circuit board through a chemical reaction, making the originally insulating hole wall conductive. This step is the basis for subsequent electroplating, etching and other processing, and facilitates the subsequent electroplating of the board surface, thereby achieving conduction between circuit boards.
[0003] In the related art, the copper sinking hanging basket generally includes a mother basket and a sub-basket. After the sub-basket is loaded with boards, it is placed in the mother basket for production. Existing circuit boards are placed vertically at 90° in the sub-basket, and then placed in the mother basket. However, this layout exposes some limitations in actual operation. First, when the vertically arranged circuit boards are coppered in the copper sinking tank, it is difficult for the bubbles inside the through-holes to be discharged naturally. Especially in the case of tiny through-holes, the retention of bubbles will form a copper-free area, which may cause the circuit to be broken in severe cases. Secondly, the vertical layout is not conducive to the full penetration and reaction of the chemical solution in the through-hole, which affects the uniformity and integrity of the coating, thereby reducing the electrical performance and reliability of the circuit board.
[0004] In some related technologies, a fixing device of a specific shape is used to tilt the circuit board, or a copper sink basket with a special structure is designed to optimize the flow of the drug solution. However, these solutions often have problems such as poor adaptability, inconvenient adjustment or increased processing costs. Utility Model Content
[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a copper sinking hanging basket, which effectively promotes the discharge of bubbles inside the through hole through a unique structural layout and adjustment mechanism, thereby enhancing the versatility and flexibility of the production tool.
[0006] The copper sinking hanging basket according to the embodiment of the utility model comprises:
[0007] A first bracket, wherein the first bracket is provided with a plurality of first fixing grooves, the plurality of first fixing grooves are linearly spaced and arranged, and the first fixing grooves are inclined and formed at an angle with the vertical plane;
[0008] A second bracket, wherein the second bracket is provided with a plurality of second fixing grooves, the plurality of second fixing grooves are linearly spaced and arranged in a one-to-one correspondence with the first fixing grooves;
[0009] Wherein, the first bracket includes a first docking crossbar, the second bracket includes a second docking crossbar, the first docking crossbar is plugged and matched with the second docking crossbar to adjust the distance between the first fixing groove and the second fixing groove, and the first fixing groove and the second fixing groove are matched to fix the circuit board;
[0010] The first docking cross bar and the second docking cross bar are fixed by fixing screws.
[0011] The copper plating hanging basket according to the embodiment of the utility model has at least the following beneficial effects: through the coordinated design of the inclined first fixing groove and the second fixing groove, the inclined placement of the circuit board in the hanging basket is realized, which not only promotes the flow and reaction of the copper plating liquid in the through hole, but also effectively utilizes the gravity to help remove the bubbles in the through hole, greatly improves the copper plating effect, reduces the copper-free phenomenon in the hole, and improves the electrical performance of the circuit board; and the first docking cross bar and the second docking cross bar adopt an adjustable docking structure, so that the hanging basket can adapt to circuit boards of different specifications, enhances the flexibility and adaptability of production operations, and brings significant production efficiency improvement to the circuit board manufacturing industry.
[0012] According to the copper sinking hanging basket described in some embodiments of the utility model, the first fixed groove includes a first section and a second section, the first section is located below the second section, the first section is vertically protruded and extends obliquely to one side; the second section is laterally extended and has the same inclination direction and angle as the first section.
[0013] According to the copper sinking hanging basket described in some embodiments of the utility model, the first bracket also includes a first supporting bottom rod, the bottom wall of the first supporting bottom rod is suitable for contacting the ground, and the first section is arranged on the upper wall of the first supporting bottom rod.
[0014] According to the copper sinking hanging basket described in some embodiments of the utility model, the second fixing groove includes a fourth section and a fifth section, the fourth section is arranged corresponding to the first section, and the fifth section is arranged corresponding to the second section.
[0015] According to the copper sinking hanging basket described in some embodiments of the utility model, the first fixed groove also includes a third section, and the third section is located between the first section and the second section. The third section is extended laterally and has the same inclination direction and angle as the second section.
[0016] According to the copper sinking hanging basket described in some embodiments of the utility model, the first bracket also includes a first auxiliary fixing cross bar, the first auxiliary fixing cross bar is located below the first docking cross bar, and the third section is arranged on the inner side wall of the first auxiliary fixing cross bar.
[0017] According to the copper sinking hanging basket described in some embodiments of the present utility model, the second fixing groove also includes a sixth section, and the sixth section is arranged corresponding to the third section.
[0018] According to the copper sinking hanging basket described in some embodiments of the utility model, the angle is A, which satisfies: 10°≤A≤20°.
[0019] According to the copper sinking hanging basket described in some embodiments of the utility model, the following is satisfied: A=15°.
[0020] According to the copper sinking hanging basket described in some embodiments of the utility model, the second docking cross bar is provided with a screw hole, and the fixing screw is threadedly connected to the screw hole to press and fix the outer wall of the first docking cross bar.
[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0023] Figure 1 It is a structural schematic diagram of the copper sinking hanging basket according to an embodiment of the utility model.
[0024] Description of Figure Numbers:
[0025] First bracket 100; first fixing slot 101; first section 1011; second section 1012; third section 1013; first docking cross bar 110; first supporting bottom bar 120; first auxiliary fixing cross bar 130;
[0026] The second bracket 200; the second fixing groove 201; the fourth section 2011; the fifth section 2012; the sixth section 2013; the second docking cross bar 210;
[0027] Fixing screw 300. DETAILED DESCRIPTION
[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0030] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0032] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0033] In the field of electronic manufacturing, especially in the production of printed circuit boards, copper plating technology occupies a pivotal position. Copper plating, or chemical copper plating, is a process of forming a continuous and uniform conductive copper layer on the through-hole wall of the circuit board through a chemical reaction, making the originally insulating hole wall conductive. This step is the basis for subsequent electroplating, etching and other processing, and facilitates the subsequent electroplating of the board surface, thereby achieving conduction between circuit boards.
[0034] In the related art, the copper sinking hanging basket generally includes a mother basket and a sub-basket. After the sub-basket is loaded with boards, it is placed in the mother basket for production. Existing circuit boards are placed vertically at 90° in the sub-basket, and then placed in the mother basket. However, this layout exposes some limitations in actual operation. First, when the vertically arranged circuit boards are coppered in the copper sinking tank, it is difficult for the bubbles inside the through-holes to be discharged naturally. Especially in the case of tiny through-holes, the retention of bubbles will form a copper-free area, which may cause the circuit to be broken in severe cases. Secondly, the vertical layout is not conducive to the full penetration and reaction of the chemical solution in the through-hole, which affects the uniformity and integrity of the coating, thereby reducing the electrical performance and reliability of the circuit board.
[0035] In some related technologies, a fixing device of a specific shape is used to tilt the circuit board, or a copper sink basket with a special structure is designed to optimize the flow of the drug solution. However, these solutions often have problems such as poor adaptability, inconvenient adjustment or increased processing costs.
[0036] For this reason, Figure 1As shown, the copper sinking hanging basket proposed by the utility model includes a first bracket 100 and a second bracket 200 connected to the first bracket 100. The circuit board can be stably placed in the first bracket 100 and the second bracket 200, and then immersed in the copper sinking solution for copper sinking treatment. Among them, the first bracket 100 is provided with a plurality of first fixing grooves 101 arranged linearly at intervals, and the second bracket 200 is provided with a plurality of second fixing grooves 201 arranged linearly at intervals, and the second fixing grooves 201 are arranged one-to-one with the first fixing grooves 101, and the first fixing grooves 101 and the second fixing grooves 201 cooperate to fix the circuit board. For example, both sides of the circuit board are respectively inserted into the first fixing groove 101 and the second fixing groove 201. In addition, there are multiple first fixing grooves 101 and second fixing grooves 201, and multiple circuit boards can be inserted, and the copper sinking treatment is performed on multiple circuit boards together. Further, the first fixing groove 101 is arranged obliquely with the vertical plane and at an angle, and the circuit board is arranged obliquely relative to the vertical plane after insertion. In addition, the first bracket 100 includes a first docking crossbar 110, and the second bracket 200 includes a second docking crossbar 210. The first docking crossbar 110 and the second docking crossbar 210 are plugged and matched to adjust the distance between the first fixing groove 101 and the second fixing groove 201, and the first docking crossbar 110 and the second docking crossbar 210 are fixed by fixing screws 300. It should be noted that the inclined placement of the circuit board in the hanging basket is realized through the matching design of the inclined first fixing groove 101 and the second fixing groove 201, which not only promotes the flow and reaction of the copper plating liquid in the through hole, but also effectively utilizes the gravity to help remove the bubbles in the through hole, greatly improves the copper plating effect, reduces the copper-free phenomenon in the hole, and improves the electrical performance of the circuit board; and the first docking crossbar 110 and the second docking crossbar 210 adopt an adjustable docking structure, so that the hanging basket can adapt to circuit boards of different specifications, enhance the flexibility and adaptability of production operations, and bring significant production efficiency improvement to the circuit board manufacturing industry.
[0037] Refer to Figure 1In some embodiments of the present invention, the first fixing groove 101 includes a first section 1011 and a second section 1012. The first section 1011 is located below the second section 1012. The first section 1011 is vertically protruding and extends obliquely toward one side; the second section 1012 is horizontally extending and has the same oblique direction and angle as the first section 1011. The vertical inclination of the first section 1011 and the horizontal inclination of the second section 1012 are combined to ensure the stable fixation of the circuit board. It is easy to understand that the first section 1011 is used to locate the bottom of the circuit board, and the second section 1012 is used to locate the upper part of the circuit board. For example, after the bottom of the circuit board is inserted into the first section 1011, the bottom wall of the first section 1011 is used to support the bottom wall of the circuit board; and the bottom wall of the second section 1012 is used to support the side wall of the circuit board; and the side walls of the first section 1011 and the second section 1012 are both used to limit the opposite end walls of the circuit board.
[0038] The first bracket 100 includes a first support bottom rod 120, the bottom wall of which is suitable for contacting the ground, thus enhancing the stability of the hanging basket, enabling it to be firmly placed on the ground, ensuring the stability of the circuit board in a tilted state, and preventing uneven copper deposition due to shaking, thereby improving the stability of the copper deposition process and product quality. In addition, the first section 1011 is arranged on the upper wall of the first support bottom rod 120, so that the circuit board can be inserted into the bottom of the first bracket 100 as much as possible, making full use of the space of the first bracket 100. Figure 1 The second fixing groove 201 includes a fourth section 2011 and a fifth section 2012. The fourth section 2011 is arranged corresponding to the first section 1011, and the fifth section 2012 is arranged corresponding to the second section 1012. The second fixing groove 201 is arranged corresponding to the first fixing groove 101, so that the fixing of the circuit board is more accurate, ensuring the flatness of the board surface and uniform plating of each part during the copper deposition process, thereby improving the uniformity of copper deposition and the quality of the board surface.
[0039] Furthermore, the first fixing groove 101 includes a third section 1013, which is located between the first section 1011 and the second section 1012. The third section 1013 is extended horizontally and has the same inclination direction and angle as the second section 1012, which further strengthens the fixation of the middle part of the circuit board, ensures the overall stability of the board surface in an inclined state, avoids deformation that may be caused by insufficient intermediate support, and improves the accuracy of copper deposition. Specifically, the first bracket 100 includes a first auxiliary fixing cross bar 130, which is located below the first docking cross bar 110, and the third section 1013 is arranged on the inner side wall of the first auxiliary fixing cross bar 130. The arrangement of the first auxiliary fixing cross bar 130 enhances the overall strength of the hanging basket, helps to maintain the stability of the board and reduce vibration during the copper deposition process, and improves the stability and consistency of the copper deposition effect.
[0040] Similarly, refer to Figure 1 The second fixing groove 201 includes a sixth section 2013, and the sixth section 2013 is arranged corresponding to the third section 1013. The second fixing groove 201 is arranged corresponding to the first fixing groove 101, which further improves the all-round fixation of the circuit board, ensures that every part of the board can be effectively supported, and maintains good copper deposition quality even in an inclined state, thereby improving the overall copper deposition efficiency.
[0041] It should be noted that, refer to Figure 1 In some embodiments, the upper wall of the first supporting bottom bar 120 is provided with a plurality of equally spaced inclined protrusions, and a first section 1011 is formed between two adjacent inclined protrusions; similarly, the inner side wall of the first docking cross bar 110 is provided with a plurality of equally spaced inclined protrusions, and a second section 1012 is formed between two adjacent inclined protrusions; similarly, the inner side wall of the first auxiliary fixing cross bar 130 is provided with a plurality of equally spaced inclined protrusions, and a third section 1013 is formed between two adjacent inclined protrusions. The settings of the fourth section 2011, the fifth section 2012, and the sixth section 2013 in the second bracket 200 can refer to the settings of the first section 1011, the second section 1012, and the third section 1013 in the first bracket 100, respectively, and will not be elaborated here.
[0042] Optionally, the angle A between the first fixed groove 101 and the vertical plane satisfies: 10°≤A≤20°. This angle range can ensure that the copper plating liquid can effectively penetrate deep into the through hole under different conditions, and the bubbles can be discharged smoothly under the action of a suitable pressure difference, thereby optimizing the copper plating process and improving the copper plating quality and efficiency. In some applications, A=15°, which is an optimized angle that can maximize the use of physical effects, making bubble removal more efficient, while ensuring uniform deposition of the chemical copper plating layer, which is particularly critical to improving copper plating quality and production efficiency.
[0043] In some embodiments of the present invention, Figure 1 As shown, the second docking cross bar 210 is provided with a screw hole, and the fixing screw 300 is threadedly connected to the screw hole to press and fix the outer wall of the first docking cross bar 110, thereby realizing the adjustability of the hanging basket length, facilitating the use of circuit boards of different sizes, enhancing the versatility and flexibility of the hanging basket, simplifying the adjustment of the production line, and improving production efficiency and adaptability.
[0044] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.
Claims
1. Copper sinking hanging basket, characterized in that, include: A first bracket, wherein the first bracket is provided with a plurality of first fixing slots, the plurality of first fixing slots are linearly spaced and arranged obliquely with respect to a vertical plane and form an angle; a second bracket, wherein the second bracket is provided with a plurality of second fixing slots, the plurality of second fixing slots are linearly spaced and arranged in a one-to-one correspondence with the first fixing slots; The first bracket includes a first docking crossbar, and the second bracket includes a second docking crossbar. The first docking crossbar is plugged into and matched with the second docking crossbar to adjust the distance between the first fixing groove and the second fixing groove. The first fixing groove and the second fixing groove cooperate to fix the circuit board. The first docking cross bar and the second docking cross bar are fixed with screws.
2. The copper sinking hanging basket according to claim 1, characterized in that: The first fixing groove includes a first section and a second section. The first section is located below the second section. The first section is vertically protruded and extends obliquely to one side. The second section extends laterally and has the same inclination direction and angle as the first section.
3. The copper sinking hanging basket according to claim 2, characterized in that: The first bracket further includes a first supporting bottom bar, the bottom wall of the first supporting bottom bar is suitable for contacting the ground, and the first section is arranged on the upper wall of the first supporting bottom bar.
4. The copper sinking hanging basket according to claim 2 or 3, characterized in that: The second fixing groove includes a fourth section and a fifth section, the fourth section is arranged corresponding to the first section, and the fifth section is arranged corresponding to the second section.
5. The copper sinking hanging basket according to claim 2 or 3, characterized in that: The first fixing groove further includes a third section, which is located between the first section and the second section. The third section extends transversely and has the same inclination direction and angle as the second section.
6. The copper sinking hanging basket according to claim 5, characterized in that: The first bracket further includes a first auxiliary fixing cross bar, the first auxiliary fixing cross bar is located below the first docking cross bar, and the third section is arranged on the inner side wall of the first auxiliary fixing cross bar.
7. The copper sinking hanging basket according to claim 6, characterized in that: The second fixing groove further includes a sixth section, and the sixth section is arranged corresponding to the third section.
8. The copper sinking hanging basket according to claim 1, characterized in that: The included angle is A, which satisfies: 10°≤A≤20°.
9. The copper sinking hanging basket according to claim 8, characterized in that: Satisfies: A=15°.
10. The copper sinking hanging basket according to claim 1, characterized in that: The second docking cross bar is provided with a screw hole, and the fixing screw is threadedly connected to the screw hole to press and fix the outer wall of the first docking cross bar.