Copper sheet oxidation jig

Abstract

The utility model discloses a copper sheet oxidation jig, which belongs to the technical field of copper sheet processing fixtures, and comprises a fixed frame, a plurality of groups of convex blocks are fixedly mounted at the top of the fixed frame in a symmetrical structure, air inducing blocks are fixedly connected to the tops of a first air guide block and a second air guide block, the first air guide block and the second air guide block are of C-shaped structures, and openings of the first air guide block and the second air guide block face outwards; the first air guide block and the second air guide block are both made of high-temperature memory alloy; the C-shaped structures of the first air guide block and the second air guide block are matched with the air inducing block, the first air guide block and the second air guide block which are made of high-temperature memory alloy are adopted, the shape memory characteristic and the elastic deformation capacity are utilized, the clamping force and the clamping position are automatically adjusted in the high-temperature deformation process of a copper sheet, and the clamping efficiency is improved. And the semi-arc side plates are matched to enhance the fixing effect, so that the copper sheet is kept stable in the whole oxidation process, and position deviation or shaking is avoided, thereby ensuring uniform contact between oxygen and the surface of the copper sheet, and remarkably improving the yield of oxidation treatment of the copper sheet.

Description

A copper sheet oxidation jig Technical Field

[0001] This utility model belongs to the field of copper sheet processing fixture technology, specifically a copper sheet oxidation jig. Background Technology

[0002] In the fields of copper-clad ceramic substrate manufacturing and electronic packaging, copper surface oxidation treatment is a key process to improve the bonding force of the copper-ceramic interface. By forming a uniform and dense oxide layer on the surface of the copper sheet, the chemical bonding or mechanical interlocking effect between the copper sheet and the ceramic substrate can be enhanced, thereby improving the thermal conductivity, insulation and overall reliability of the substrate.

[0003] Existing copper sheet oxidation fixtures typically use traditional tooling fixtures to fix and oxidize copper sheets. Common devices generally consist of a fixing frame, limiting components, and a gas guiding structure. During use, the copper sheet is positioned by simple slots or clamping components, and oxygen is introduced into the fixture through an external gas pipeline to achieve the oxidation reaction on the surface of the copper sheet.

[0004] However, the existing gas guiding structure of the fixture is difficult to precisely control the oxygen flow path, which can easily lead to oxygen leakage or poor flow. This results in uneven oxygen concentration distribution on the copper sheet surface, making it impossible to achieve precise oxidation of specific copper sheet surfaces and failing to meet diverse process requirements. Summary of the Invention

[0005] To overcome the above-mentioned defects, this utility model provides a copper sheet oxidation fixture, which solves the problem that the gas guiding structure of the existing fixture is difficult to precisely control the oxygen flow path, and is prone to oxygen leakage or poor flow, resulting in uneven oxygen concentration distribution on the copper sheet surface and failure to achieve precise oxidation of specific surfaces of the copper sheet.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a copper sheet oxidation fixture, comprising a fixed frame, wherein multiple sets of protrusions are fixedly installed on the top of the fixed frame in a symmetrical structure, side plates are installed on both sides of the fixed frame, a copper sheet body is placed between the top of the protrusions and the side plates, and a first air guide block and a second air guide block in a symmetrical structure are snapped onto the fixed frame, wherein an air guide block is fixedly connected to the top of both the first air guide block and the second air guide block, both the first air guide block and the second air guide block are C-shaped structures with outward openings, and both the first air guide block and the second air guide block are made of high-temperature shape memory alloy.

[0007] As a further embodiment of this utility model: the fixed frame is provided with a slot for use with the first air guide block and the second air guide block.

[0008] As a further embodiment of this utility model: the side plate has a semi-arc structure, and the side plate wraps around the copper sheet body.

[0009] As a further embodiment of this utility model: the air-guiding blocks are all in contact with the outer wall of the copper sheet body, and the outer side of the air-guiding blocks is provided with an oblique angle to cooperate with the copper sheet body.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] By combining the C-shaped structure of the first and second air guide blocks with the air duct block, a closed air guide channel is constructed. Combined with the slots in the fixed frame, oxygen is strictly restricted to flow outward from both sides of the copper sheet, avoiding contact with the bottom of the copper sheet. This allows for precise oxidation treatment of specific surfaces of the copper sheet according to different process requirements, improving the controllability and flexibility of the oxidation process.

[0012] The first and second gas guide blocks, made of high-temperature shape memory alloy, utilize shape memory properties and elastic deformation capabilities to automatically adjust the clamping force and position during the high-temperature deformation of the copper sheet. Combined with the semi-circular side plate to enhance the fixing effect, they ensure that the copper sheet remains stable throughout the oxidation process, avoiding positional shifts or shaking. This ensures uniform contact between oxygen and the copper sheet surface, forming a stable and dense oxide layer, significantly improving the yield of copper sheet oxidation treatment. Attached Figure Description

[0013] Figure 1 is a first-view schematic diagram of the overall structure of this utility model;

[0014] Figure 2 is a second-view schematic diagram of the overall structure of this utility model;

[0015] Figure 3 is a schematic diagram of the disassembled structure of this utility model;

[0016] Figure 4 is a schematic diagram showing the disassembly effect of the main structure of this utility model;

[0017] Figure 5 is a schematic diagram of the structure of this utility model with the second air guide block removed;

[0018] Figure 6 is a partial enlarged view of point A in Figure 5 of this utility model.

[0019] In the diagram: 1. Copper sheet body; 2. Fixing frame; 3. Side plate; 4. First air guide block; 5. Second air guide block; 6. Protrusion; 7. Slot; 8. Air duct. Detailed Implementation

[0020] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0021] As shown in Figures 1-6, this utility model provides a technical solution:

[0022] A copper sheet oxidation fixture includes a fixed frame 2. Multiple sets of protrusions 6 are fixedly installed on the top of the fixed frame 2 in a symmetrical structure. Side plates 3 are installed on both sides of the fixed frame 2. A copper sheet body 1 is placed between the top of the protrusions 6 and the side plates 3. A first air guide block 4 and a second air guide block 5 in a symmetrical structure are snapped on the fixed frame 2. An air guide block 8 is fixedly connected to the top of the first air guide block 4 and the second air guide block 5. The first air guide block 4 and the second air guide block 5 are both C-shaped structures with outward openings. The first air guide block 4 and the second air guide block 5 are both made of high-temperature shape memory alloy.

[0023] Specifically, the copper sheet body 1 is stably placed between the protrusion 6 and the side plate 3 on the top of the fixed frame 2. The protrusion 6 and the side plate 3 provide initial positioning of the copper sheet. At this time, the first air guide block 4, the second air guide block 5, and the air duct 8 together form a semi-enclosed structure for the copper sheet body 1, providing initial fixation at room temperature. The entire device is then placed in a high-temperature treatment equipment such as an oxidation furnace. As the temperature gradually increases, the copper sheet body 1 begins to deform due to thermal expansion and contraction. Simultaneously, the high-temperature shape memory alloy material of the first air guide block 4 and the second air guide block 5 retains its shape during the shape recovery process. The elastic deformation capability of the shape-memory alloy allows it to adapt to the expansion or warping of the copper sheet body 1, maintaining a tight clamping hold on the copper sheet. This ensures the copper sheet remains firmly held between the first air guide block 4, the second air guide block 5, and the air duct block 8, without shifting or loosening due to deformation. When oxygen is introduced into the device, because the first air guide block 4 and the second air guide block 5 are C-shaped with outward openings, the oxygen can only flow along both sides of the copper sheet, forming a directional airflow from both sides outwards. This effectively prevents oxygen from contacting the bottom of the copper sheet, thus achieving precise oxidation treatment of specific surfaces of the copper sheet. After the oxidation treatment is completed, the flow is stopped. Oxygen is introduced and the device temperature is gradually reduced. During the cooling process, the first and second air guide blocks 4 and 5, made of high-temperature shape memory alloy, maintain their C-shaped structure, continuously and firmly clamping the copper sheet body 1 until the temperature drops to room temperature. At this point, utilizing the flexibility of the shape memory alloy at room temperature, the first and second air guide blocks 4 and 5 are easily removed from the fixing frame 2, and the processed copper sheet body 1 is taken out. Through the unique C-shaped structure and installation method of the first and second air guide blocks 4 and 5, together with the air duct block 8, a closed air guide channel is constructed, strictly limiting the oxygen flow path and ensuring that oxygen only flows from both sides of the copper sheet. The side-flowing outward flow avoids contact with the bottom of the copper sheet, precisely achieving oxidation treatment on specific surfaces of the copper sheet to meet diverse process requirements. The shape memory characteristics and elastic deformation capabilities of the high-temperature shape memory alloy enable it to automatically adjust the clamping force and position during the high-temperature deformation of the copper sheet, always maintaining a stable fixation on the copper sheet. Since the copper sheet is stably clamped throughout the entire high-temperature oxidation process, there will be no positional shift or shaking, ensuring uniform contact between oxygen and the surface of the copper sheet. This helps to form a uniform, dense, and stable oxide layer, significantly improving the consistency and yield of the copper sheet oxidation treatment.

[0024] The fixed frame 2 has a slot 7 for use with the first air guide block 4 and the second air guide block 5. The side plate 3 has a semi-arc structure and wraps around the copper sheet body 1. The air guide blocks 8 are all in contact with the outer wall of the copper sheet body 1. The outer side of the air guide block 8 has an angle for use with the copper sheet body 1.

[0025] Specifically, the slot 7 allows oxygen to flow out. The side plate 3 has a semi-circular structure and wraps around the copper sheet body 1. Compared with the traditional flat plate structure, it can limit and fix the copper sheet from a larger area and a closer angle, which enhances the stability of the copper sheet installation and prevents the copper sheet from shifting or shaking during high-temperature treatment. The air-guiding block 8 is in contact with the outer wall of the copper sheet body 1 and can directly guide the oxygen to the surface of the copper sheet. The angled opening on the outside can change the direction and speed of oxygen flow. Using the principle of aerodynamics, the oxygen can flow more smoothly on the top of the copper sheet body 1 or to both sides, avoiding the accumulation of oxygen in a local area or the formation of eddies. This ensures that the oxygen concentration on the surface of the copper sheet is uniform, thereby improving the uniformity and efficiency of oxidation and helping to form a better quality oxide layer.

[0026] The working principle of this utility model is as follows:

[0027] First, the copper sheet body 1 is placed between the protrusion 6 on the top of the fixed frame 2 and the semi-circular side plate 3. The protrusion 6 and the side plate 3 form a limiting structure to complete the initial positioning of the copper sheet. At the same time, the first air guide block 4 and the second air guide block 5, made of high temperature memory alloy, are snapped on the fixed frame 2. The air guide block 8 on the top of the two and the air guide block together form a semi-enclosed structure to initially clamp and fix the copper sheet at room temperature.

[0028] Secondly, when the device is placed in a high-temperature equipment, the copper sheet deforms due to thermal expansion and contraction. The high-temperature shape memory alloy material of the first air guide block 4 and the second air guide block 5 recovers to a C-shape (opening outwards) during the heating process. With its elastic deformation capability, it adapts to the deformation of the copper sheet and continues to tightly clamp the copper sheet to prevent it from shifting. At this time, oxygen is introduced into the device. The C-shaped air guide block and the air guide block 8 form a closed air guide channel, so that the oxygen can only flow outwards along both sides of the copper sheet, avoiding contact with the bottom of the copper sheet, and achieving precise oxidation.

[0029] It is worth mentioning that the slot 7 on the fixed frame 2 assists oxygen flow and ensures unobstructed airflow path; the semi-circular side plate 3 wraps the copper sheet from a larger area, enhancing its installation stability at high temperatures; the air-guiding block 8 contacts the outer wall of the copper sheet, directly guiding oxygen flow to the surface of the copper sheet, and its outer angle uses aerodynamic principles to change the direction and speed of oxygen flow, so that oxygen is evenly distributed on the top and sides of the copper sheet, avoiding local accumulation or eddies, and improving oxidation uniformity and efficiency.

[0030] Finally, after the oxidation process is completed and the temperature is lowered, the first air guide block 4 and the second air guide block 5, made of high-temperature shape memory alloy, hold the copper sheet in a C-shape until it reaches room temperature. Utilizing the flexibility of shape memory alloy at room temperature, the air guide blocks can be easily disassembled, and the processed copper sheet body 1 can be taken out, thus completing the entire processing procedure.

[0031] The preferred embodiments of the present invention have been described in detail above. However, the present invention 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 invention.

Claims

1. A copper sheet oxidation fixture, comprising a fixing frame (2), characterized in that: The top of the fixed frame (2) has a symmetrical structure with multiple sets of protrusions (6) fixedly installed. Side plates (3) are installed on both sides of the fixed frame (2). A copper sheet body (1) is placed between the top of the protrusion (6) and the side plate (3). The fixed frame (2) has a first air guide block (4) and a second air guide block (5) with a symmetrical structure snapped on it. The top of the first air guide block (4) and the second air guide block (5) are both fixedly connected to an air duct block (8). The first air guide block (4) and the second air guide block (5) are both C-shaped structures with the opening facing outward. The first air guide block (4) and the second air guide block (5) are both made of high temperature memory alloy.

2. The copper sheet oxidation fixture according to claim 1, characterized in that: The fixed frame (2) has a slot (7) for use with the first air guide block (4) and the second air guide block (5).

3. The copper sheet oxidation fixture according to claim 2, characterized in that: The side plate (3) has a semi-arc structure and wraps around the copper sheet body (1).

4. The copper sheet oxidation fixture according to claim 3, characterized in that: The air-guiding blocks (8) are all in contact with the outer wall of the copper sheet body (1), and the outer side of the air-guiding blocks (8) is provided with an oblique angle to cooperate with the copper sheet body (1).

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