A copper block brownification fixture

Abstract

The utility model discloses a kind of copper block brownification clamps, including carrier plate and cover plate. Ladder groove is opened in carrier plate top surface, its bottom surface is equipped with multiple deep grooves for accommodating copper block with array distribution, first through-hole is equipped with array arrangement in deep groove groove bottom, connecting rib is formed between adjacent deep grooves, and several fixed columns are equipped on connecting rib. Cover plate is used to cover in ladder groove, and it is equipped with multiple second through-hole and fixed hole matched with fixed column on it, second through-hole is arranged correspondingly with first through-hole when covering, and fixed hole is fixed with fixed column. The utility model is matched by ladder groove and fixed column, realizes the stable embedding of cover plate and carrier plate and reliable fixing, does not need to rely on external adhesive tape, significantly improves clamping efficiency and operation convenience;Meanwhile, cover plate uses large-area through-hole design, greatly increases medicine exchange area and flow efficiency, ensures the uniformity and reliability of brownification processing;Overall structure design is ingenious, effectively resist vibration and impact in conveying process, with the advantages of efficient production and stable operation.

Description

Technical Field

[0001] This utility model relates to the field of copper block browning technology, and in particular to a copper block browning fixture. Background Technology

[0002] In the production of printed circuit boards (PCBs), the process of embedding copper blocks requires a browning treatment on the surface of the copper blocks to enhance their adhesion to resin. Currently, the commonly used browning fixture mainly consists of a carrier plate and a cover plate. The operation process is as follows: First, a copper block is placed in a carrier plate groove with a deep, hollowed-out slot; the bottom of the groove has through holes. Then, a cover plate of similar size is placed on top, also with a corresponding matrix of through holes. Next, external aids such as tape are used to attach and fix the four corners of the carrier plate and cover plate to form a single unit that can pass through the horizontal browning line. After browning is complete, the tape must be removed before the cover plate can be separated and the copper block removed. This traditional method has significant drawbacks: First, it relies on manual application and removal of tape, consuming manpower and materials, reducing production efficiency. Second, the tape fixing method is prone to loosening during horizontal transport due to vibration or resin impact, posing a stability risk. Third, the connecting ribs on the cover plate can hinder resin exchange and flow to some extent, potentially affecting the uniformity and reliability of the browning effect. Therefore, the industry urgently needs a new type of browning fixture that can simplify operation, improve fixation reliability, and optimize chemical exchange efficiency. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a copper block browning fixture, which can eliminate the traditional adhesive tape fixing method, realize the rapid and reliable clamping and separation of the cover plate and the carrier plate, and significantly improve the efficiency and quality of the browning process.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A copper block browning fixture, comprising The carrier plate has a stepped groove on its top surface and multiple deep grooves arranged in an array on the bottom surface of the stepped groove. Each deep groove is used to accommodate a copper block. Multiple first through holes are arranged in an array at the bottom of the deep groove. Connecting ribs are formed between adjacent deep grooves and several fixing posts are provided on the connecting ribs. A cover plate is used to cover the stepped groove. The cover plate is provided with a plurality of second through holes and a fixing hole that cooperates with the fixing post. When the cover plate is closed, the second through holes are arranged corresponding to the first through holes, and the fixing holes cooperate with the fixing post to achieve fixation.

[0005] A copper block browning fixture according to an embodiment of this utility model has at least the following beneficial effects: The innovative design of a stepped groove on the top surface of the carrier plate allows the cover plate to be embedded and closed within the groove, and fixed by fixing posts and fixing holes, forming a stable overall structure together with the carrier plate. This structure fundamentally eliminates the traditional method of relying on external tape for fixing, not only simplifying the clamping and disassembly operations, significantly improving production efficiency and reducing material consumption, but also ensuring that the fixture can effectively resist vibration and chemical impact during horizontal transport through the stepped groove's horizontal limiting effect on the cover plate and the fixing post's vertical fixing effect, greatly improving the reliability and stability of operation. Simultaneously, the cover plate design eliminates the solid area corresponding to the connecting ribs of the carrier plate in traditional cover plates, retaining only the necessary fixing holes and a large-area through hole. This greatly increases the contact area and flow efficiency between the chemical and the copper block, thereby promoting the sufficiency and uniformity of chemical exchange, providing a strong guarantee for obtaining a high-quality, highly consistent copper block browning effect. In addition, the fixture has a clever structural design. After browning is completed, the copper block can be easily flipped to fall onto the cover plate and the cover plate can be easily separated from the carrier plate. This further optimizes the part removal process. The overall structure is compact and highly practical, while also taking into account the efficiency and reliability of the browning process.

[0006] According to some embodiments of the present invention, both the carrier plate and the cover plate are provided with resin curing films on opposite sides.

[0007] The benefits are that the resin-cured film effectively prevents corrosion or damage to the carrier plate and cover plate during long-term contact with chemical solutions, significantly improving the durability and service life of the fixture. Simultaneously, the film also reduces scratches between the copper block and the fixture, protecting the workpiece surface.

[0008] According to some embodiments of this utility model, the carrier plate and the cover plate are square in shape.

[0009] The advantages are: the square shape provides better maneuverability and stability of the fixture on horizontal conveyor lines, making it less prone to deflection. At the same time, this shape facilitates production, processing, and daily storage management, meeting the mainstream requirements for fixture shapes in most automated equipment.

[0010] According to some embodiments of the present invention, the depth of the stepped groove is equal to the thickness of the cover plate.

[0011] The advantage is that this design allows the upper surface of the cover plate to remain flush with the top surface of the carrier plate after it is closed, thus forming a complete and flat working surface. This not only eliminates potential interference and ensures the smooth operation of the fixture during the transfer process, but also makes the overall structure more compact and aesthetically pleasing.

[0012] According to some embodiments of this utility model, the shape and depth of the deep groove are matched with the copper block.

[0013] The advantage is that the matching design allows the copper block to be stably accommodated in the deep groove, effectively limiting its horizontal movement and preventing displacement or collisions caused by shaking during transport. This provides precise positioning for the copper block, ensuring the uniformity of the browning process.

[0014] According to some embodiments of the present invention, both the first through hole and the second through hole are circular through holes.

[0015] The advantages are: circular through holes are easy to machine, have no stress concentration points in their structure, have higher mechanical strength, and are less prone to cracking during processing and use. At the same time, circular channels facilitate smooth flow and circulation of the medicine, helping to create a uniform medicine exchange field.

[0016] According to some embodiments of this utility model, the diameters of the first through hole and the second through hole are both 1.5 mm.

[0017] The advantage is that this diameter setting ensures sufficient flow area and exchange efficiency of the medicine, while also ensuring that the cover plate and carrier plate substrate have sufficient structural strength to effectively withstand the mechanical load and liquid pressure during the browning process and avoid deformation.

[0018] According to some embodiments of the present invention, the wall spacing of the first through hole and the wall spacing of the second through hole are both 0.3 mm.

[0019] The advantage is that this spacing design allows for a high-density arrangement of through holes within a limited area, thereby maximizing the chemical exchange area. It provides numerous uniformly distributed flow paths for the chemical while ensuring the structural integrity and strength of the plate.

[0020] According to some embodiments of this utility model, the fixing column is cylindrical, and the fixing hole is a circular through hole that is clearance-fitted with the fixing column.

[0021] The advantages of cylindrical mating pairs are that they offer good centering and are easy to process. Clearance fits ensure that the cover plate can be easily and accurately installed and removed, while also providing the necessary constraints for reliable fixing.

[0022] According to some embodiments of this utility model, the top of the fixing column is provided with an incline.

[0023] The advantages are: the slope at the top forms a guide surface, which makes it easier for the fixing holes to fit into the fixing posts when the cover plate is closed, greatly simplifying the alignment and installation operations, improving assembly efficiency, and reducing wear that may be caused by misalignment.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the carrier plate according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the cover plate according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the cooperation between the carrier plate and the cover plate in an embodiment of this utility model.

[0027] Reference numerals: Carrier plate 100, stepped groove 110, deep groove 120, first through hole 130, connecting rib 140, fixing column 150, cover plate 160, second through hole 170, fixing hole 180. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The following is for reference. Figures 1-3 A copper block browning fixture is described in detail with reference to a specific embodiment. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0033] like Figures 1-3 As shown, the copper block browning fixture mainly consists of two parts: a carrier plate 100 and a cover plate 160. Figure 1 As shown, the top surface of the carrier plate 100 has a stepped groove 110, and the bottom surface of the stepped groove 110 has a plurality of deep grooves 120 arranged in an array. These deep grooves 120 are used to accommodate copper blocks, and their shape and depth are matched to the copper blocks, thereby ensuring that the copper blocks can be stably placed in the grooves, effectively limiting their horizontal movement, preventing displacement or collision caused by shaking during the transfer process, providing precise positioning for the copper blocks and ensuring the uniformity of the browning process. The bottom of the deep grooves 120 has a plurality of first through holes 130 arranged in an array. These first through holes 130 are circular through holes, and their diameter is preferably 1.5 mm. This diameter is set to ensure sufficient chemical flow area and exchange efficiency, while also ensuring that the carrier plate 100 substrate has sufficient structural strength to effectively withstand the mechanical load and liquid pressure during the browning process and avoid deformation. Connecting ribs 140 are formed between adjacent deep grooves 120. Seven fixing posts 150 are provided on these connecting ribs 140. The fixing posts 150 are cylindrical and have an inclined top to form a guide surface, which facilitates the subsequent installation and alignment of the cover plate 160.

[0034] like Figure 2As shown, the cover plate 160 is used to cover the stepped groove 110 of the carrier plate 100. The depth of the stepped groove 110 is equal to the thickness of the cover plate 160, so that the upper surface of the cover plate 160 can remain flush with the top surface of the carrier plate 100 after it is closed, thus forming a complete and flat working plane. This not only eliminates possible interference and ensures the smooth operation of the fixture during the transfer process, but also makes the overall structure more compact and aesthetically pleasing. The cover plate 160 is provided with multiple second through holes 170 and fixing holes 180 that cooperate with the fixing posts 150. The second through holes 170 are also circular through holes, with a preferred diameter of 1.5 mm, and are set corresponding to the first through holes 130. The distance between the hole walls of the first through holes 130 and the second through holes 170 is designed to be 0.3 mm. This distance enables a high-density arrangement of through holes within a limited area, thereby maximizing the chemical exchange area and providing numerous uniformly distributed flow paths for the chemical while ensuring the integrity and strength of the plate structure. The fixing hole 180 is a circular through hole that fits with the fixing post 150 with a clearance fit. The center of the hole of the fixing post 150 must be consistent with the center of the fixing post 150 on the carrier plate 100. The cylindrical mating pair has the advantages of good centering and simple processing. The clearance fit ensures that the cover plate 160 can be easily and accurately installed and removed, while providing the necessary constraints to achieve a reliable fixing effect.

[0035] The innovative design of the stepped groove 110 on the top surface of the carrier plate 100 allows the cover plate 160 to be embedded and closed within the groove. The stepped groove 110 limits the cover plate 160 in the horizontal direction, preventing it from detaching from the carrier plate 100 during horizontal transport. Simultaneously, the cooperation of the fixing post 150 and the fixing hole 180 aligns the cover plate 160 and the carrier plate 100, and fixes the cover plate 160 in the vertical direction, preventing it from popping out of the carrier plate 100 due to vibrations and liquid impacts during horizontal transport. This fixing method fundamentally eliminates the traditional reliance on external tape for fixing, simplifying the clamping and disassembly operations, significantly improving production efficiency and reducing material consumption, and greatly enhancing the reliability and stability of the fixture during operation.

[0036] The design of the cover plate 160 eliminates the solid area corresponding to the connecting rib 140 of the carrier plate 100 in the traditional cover plate 160. That is, the connecting rib 140 between the tanks is not retained; only the holes for the fixing posts 150 are retained. The remaining area consists of large-area through holes 170. This greatly increases the contact area and flow efficiency between the chemical and the copper block, thereby promoting the sufficiency and uniformity of chemical exchange and further improving the browning efficiency and reliability of the copper block. The carrier plate 100 and cover plate 160 are preferably square, which gives the fixture better passability and stability on the horizontal conveyor line, making it less prone to deflection. It also facilitates production processing and daily storage management, meeting the mainstream requirements for fixture shape in most automated equipment. In addition, a resin curing film can be provided on the opposite side of the carrier plate 100 and the cover plate 160. This film layer can effectively prevent the carrier plate 100 and the cover plate 160 from being corroded or damaged during long-term contact with chemical solutions, significantly improving the durability and service life of the fixture. At the same time, it can also reduce scratches between the copper block and the fixture, thus protecting the surface of the workpiece.

[0037] During operation, the copper block is first placed in the deep groove 120 of the carrier plate 100, and then the cover plate 160 is fitted into the stepped groove 110 of the carrier plate 100, as follows. Figure 3 As shown, the fixing post 150 and fixing hole 180 cooperate to achieve rapid alignment and fixation without the need for tape. The assembled fixture enters the horizontal browning line for browning treatment. During this process, the chemical solution fully contacts and exchanges with the surface of the copper block through the dense through holes on the carrier plate 100 and the cover plate 160. After browning is completed, the fixture is removed, and the copper block can fall onto the cover plate 160 by gravity with a simple flip. At the same time, the cover plate 160 can also detach from the carrier plate 100 by gravity, thus achieving convenient removal of the copper block without removing tape, optimizing the part removal process. This browning fixture, through the cooperation of the stepped groove 110 and the fixing post 150, achieves rapid and reliable clamping and separation of the cover plate 160 and the carrier plate 100, eliminating the traditional tape fixing method, saving manpower and materials, and improving production efficiency. Its structural design ensures the stability and anti-interference capability of the fixture during horizontal transfer. Meanwhile, the optimized 160mm through-hole design of the cover plate significantly increases the chemical exchange area, improving the uniformity, efficiency, and reliability of the browning treatment. The overall structure is compact and practical, balancing durability and ease of operation, effectively solving many problems associated with traditional fixtures.

[0038] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A copper block browning fixture, characterized in that, include: A carrier plate (100) has a stepped groove (110) on its top surface. The bottom surface of the stepped groove (110) has a plurality of deep grooves (120) arranged in an array. Each deep groove (120) is used to accommodate a copper block. The bottom of the deep groove (120) has a plurality of first through holes (130) arranged in an array. A connecting rib (140) is formed between adjacent deep grooves (120). A plurality of fixing posts (150) are provided on the connecting rib (140). A cover plate (160) is used to cover the stepped groove (110). The cover plate (160) is provided with a plurality of second through holes (170) and a fixing hole (180) that cooperates with the fixing post (150). When the cover plate (160) is closed, the second through holes (170) are correspondingly arranged with the first through holes (130), and the fixing holes (180) cooperate with the fixing post (150) to achieve fixation.

2. The copper block browning fixture according to claim 1, characterized in that, Both the carrier plate (100) and the cover plate (160) have a resin curing film on opposite sides.

3. The copper block browning fixture according to claim 1, characterized in that, The carrier plate (100) and the cover plate (160) are square in shape.

4. The copper block browning fixture according to claim 1, characterized in that, The depth of the stepped groove (110) is equal to the thickness of the cover plate (160).

5. A copper block browning fixture according to claim 1, characterized in that, The shape and depth of the deep groove (120) are matched with the copper block.

6. A copper block browning fixture according to claim 1, characterized in that, Both the first through hole (130) and the second through hole (170) are circular through holes.

7. A copper block browning fixture according to claim 6, characterized in that, The diameters of the first through hole (130) and the second through hole (170) are both 1.5 mm.

8. A copper block browning fixture according to claim 6, characterized in that, The wall spacing of the first through hole (130) and the wall spacing of the second through hole (170) are both 0.3 mm.

9. A copper block browning fixture according to claim 1, characterized in that, The fixing post (150) is cylindrical, and the fixing hole (180) is a circular through hole that fits the fixing post (150) with a clearance.

10. A copper block browning fixture according to claim 9, characterized in that, The top of the fixed column (150) is sloped.

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