A new rotary cover plate mechanism

Abstract

The application discloses a novel rotary cover plate mechanism and relates to the technical field of chip packaging. The mechanism comprises a rack and a cover plate arranged on the top of a recess. The end cover of the rack is provided with the recess for placing products. The bottom of the recess is provided with a heating platform. The cover plate comprises a plate body and a gas distribution block integrated on the plate body. The plate body is provided with an opening corresponding to the vertical product. The gas distribution block is connected with the opening through the gas hole to apply the protective gas. The technical advantage of the application is that the cover plate can be opened on the top of the recess and the heating platform. The gas distribution block integrated on the cover plate can supply the protective gas to effectively prevent the product from being oxidized. The two groups of air channels are arranged on the cover plate through the gas distribution block. The gas hole on the lower side fills the recess with the protective gas. The gas hole on the upper side is connected with the oblique guide groove to apply to the outside of the opening on the plate body, which is used for isolating the external air. The rotary driving part and the gas supply part are integrated, which solves the problem of supplying the protective gas before and after the cover plate is turned over.

Description

Technical Field

[0001] This application relates to the field of chip packaging technology, and in particular to a novel rotating cover mechanism. Background Technology

[0002] Semiconductor packaging is a crucial step in the semiconductor manufacturing process. Its core function is to protect, interconnect, and enable the bare chips diced from wafers, transforming them into functional devices that can be directly applied to electronic devices. From a process flow perspective, semiconductor packaging generally includes key steps such as chip mounting, wire bonding or flip-chip bonding, molding, lead trimming, and testing. Chip mounting involves fixing the bare chip onto a lead frame or substrate, while final testing screens out qualified products. In terms of materials, the lead frame in the packaging process often uses copper or copper alloys (bare copper is widely used due to its excellent conductivity), the substrate commonly uses ceramic or organic materials, the bonding wires are mostly gold, copper, or silver wires, and the molding compound is epoxy resin-based.

[0003] During the packaging process, bare copper products often require high-temperature treatment on a heating platform to meet the requirements of processes such as welding, curing, or hot pressing. However, the heating platforms currently used in the industry are generally open-type designs, with their working areas directly connected to the surrounding air environment. Under high-temperature conditions, the surface of bare copper products is highly susceptible to oxidation reaction with oxygen in the air, forming an oxide layer. This oxide layer not only reduces the electrical and thermal conductivity of the bare copper but may also lead to problems such as poor soldering and increased contact resistance, seriously affecting the quality stability and product reliability of chip packaging. Therefore, how to effectively avoid the oxidation problem of bare copper products during the heating process has become a technical challenge that urgently needs to be solved in chip packaging technology. Summary of the Invention

[0004] This device provides a novel rotating cover plate mechanism, the specific implementation of which is as follows:

[0005] A novel rotating cover mechanism includes:

[0006] The frame has a groove on its end cover for placing products, and the bottom of the groove is a heating platform.

[0007] The cover plate located at the top of the groove includes a plate body and a gas distribution block integrated on the plate body. The plate body has an opening that corresponds vertically to the product. The gas distribution block discharges protective gas through air holes to act on the opening, thereby sealing the top of the heating platform from the outside world and preventing the product from oxidizing.

[0008] Based on the above technical solutions, to address the issue of easy oxidation of bare copper products on the heating platform, an openable cover plate is designed on the top of the heating platform. A gas distribution block with gas distribution function is integrated into the cover plate, thus constructing a complete anti-oxidation protective gas path. The cover plate and the heating platform form a relatively enclosed space. When the bare copper product is placed on the heating platform for high-temperature treatment, the closed cover plate and the opening sealed by the protective gas keep the product in a relatively isolated environment, reducing direct contact with outside air. This effectively ensures the surface quality and performance stability of the bare copper product, reduces subsequent deoxidation processes, thereby improving production efficiency and reducing costs. The heating platform is a conventional temperature-controlled heating structure in the field, including a heating panel that supports the product, a built-in heating module, and a temperature sensor, enabling precise temperature control and providing a stable high-temperature treatment environment for the bare copper product.

[0009] Preferably, the air distribution block has air holes on both the top and bottom of the cover plate, and an inclined guide groove is provided on the top of the cover plate at the position of the air hole.

[0010] Based on the above technical solutions, the gas distribution block is designed with two independent gas channels, upper and lower. The upper gas channel's vents guide protective gas through inclined guide grooves, acting on the external area of ​​the opening formed when the cover plate and heating platform are closed, creating an air curtain barrier. This barrier, composed of protective gas, effectively prevents external air from penetrating into the enclosed space, further enhancing the protection of the internal environment. The gas distribution block integrated into the cover plate can stably supply inert protective gases such as nitrogen and argon. The lower vents fill the grooves with protective gas to provide an anti-oxidation environment for the product. The protective gas is evenly delivered to the enclosed grooves through the vents, gradually replacing the air within.

[0011] Preferably, a rotation drive unit is provided between the cover plate and the frame. The cover plate is connected to a rotating shaft downwards. The rotation drive unit includes a rotary cylinder, and the arm end of the rotary cylinder is connected to the rotating shaft through a coupling.

[0012] Preferably, it also includes an air supply unit located inside the frame. The air supply unit includes a connector and a fixing block that are interconnected. The fixing block has an axial guide port on its inner side. A bearing is provided between the axial guide port and the rotating shaft. The top of the rotating shaft is a hollow structure that communicates with the axial guide port, and the central guide point of the rotating shaft is connected to the air distribution block.

[0013] Based on the above technical solutions, by integrating the rotation drive unit and the gas supply unit, not only is the miniaturized integration of the device's functions achieved, but the problem of continuous and stable supply of protective gas before and after the cover plate flipping action is also cleverly solved. This avoids the pipeline connection problems or gas supply interruption problems caused by cover plate flipping in traditional separate designs, and also ensures that the protective gas can be stably delivered as needed throughout the entire process of cover plate opening and closing.

[0014] Preferably, sealing rings are provided at both ends of the axial guide port of the fixing block and between the rotating shaft.

[0015] Preferably, the rotating shaft and the fixed block are connected by a locking nut.

[0016] Preferably, the frame is a frame structure consisting of a base plate and end caps.

[0017] Preferably, the end cap has pressure claws on both sides of the groove, and the pressure claws on both sides are positioned inward by a driving component to act on the product.

[0018] In summary, this application includes the following beneficial technical effects:

[0019] 1. This utility model can effectively prevent product oxidation by setting an openable cover plate on the top of the groove and heating platform, and integrating a gas distribution block for supplying protective gas into the cover plate;

[0020] 2. This utility model sets two sets of air channels on the cover plate through the air distribution block. The air holes on the lower side fill the groove with protective gas to provide an anti-oxidation environment for the product, while the air holes on the upper side act on the outside of the opening on the plate through the inclined guide groove to isolate the outside air.

[0021] 3. This utility model has a simple structure. By integrating the rotation drive unit and the air supply unit into one unit, it not only achieves miniaturized configuration of functions, but also solves the problem of supplying protective gas before and after the drive cover plate flips. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the rotating component and the cover plate in this utility model;

[0025] Figure 4 This is an exploded structural diagram of the cover plate in this utility model;

[0026] Figure 5 This is a schematic diagram of the cover plate in this utility model. Figure 1 ;

[0027] Figure 6 This is a schematic diagram of the cover plate in this utility model. Figure 2 .

[0028] Explanation of reference numerals in the attached figures:

[0029] 101. Pressure claw; 102. Product; 103. Heating platform; 104. End cap; 105. Base plate.

[0030] 1. Rotary cylinder; 2. Coupling; 3. Lock nut; 4. Bearing; 5. Sealing ring; 6. Cover plate; 7. Shaft; 8. Connector; 9. Fixing block.

[0031] 601. Plate body; 602. Air distribution block; 603. Air hole; 604. Opening; 605. Angled guide groove. Detailed Implementation

[0032] The specific embodiments of this utility model are described below with reference to the accompanying drawings and examples:

[0033] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0034] Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0035] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0036] This application discloses a novel rotating cover plate mechanism.

[0037] Example 1

[0038] Reference Figures 1 to 6 This embodiment discloses a novel rotating cover plate mechanism, including a frame and a cover plate 6 disposed on the top of a groove. The end cap 104 of the frame has a groove for placing a product 102, and the bottom of the groove is a heating platform 103. The cover plate 6 includes a plate body 601 and a gas distribution block 602 integrated on the plate body 601. The plate body 601 has an opening 604 that is vertically corresponding to the product 102. The gas distribution block 602 discharges protective gas through the air hole 603 to act on the opening 604, thereby sealing the top of the heating platform 103 from the outside world and preventing the product 102 from oxidizing. The groove of the end cap 104 has pressure claws 101 on both sides. The pressure claws 101 on both sides are positioned inward by a driving member and act on the product 102. In this structure, the pressure claws 101 are conventional technical means in the art. The pressure claws 101 on both sides are provided with slides. The pressure claws 101 are driven by air or pressure to clamp the product 102 inward.

[0039] The air distribution block 602 has air holes 603 on both the top and bottom of the cover plate 6, and an inclined guide groove 605 is opened at the position of the air hole 603 on the top of the cover plate 6. The cover plate 6 is connected to a rotating shaft 7 downward. The rotating shaft 7 is connected to the fixing block 9 through a locking nut 3. In this structure, the cover plate 6 is rotatably mounted on the end cover 104 through the rotating shaft 7. When the cover plate 6 is opened to expose the groove, the product 102 is introduced. When applying the patch, the product 102 is applied through the opening 604 on the cover plate 6.

[0040] The specific installation steps are as follows: fix the bearing 4 and the sealing ring 5 on the fixing block 9, and let the rotating shaft 7 pass through the bearing 4 and the sealing ring 5 in sequence; fix the rotating cylinder 1 on the base plate 105, and fix the fixing block 9 on the end cover 104; fix the rotating cylinder 1 and the rotating shaft 7 together through the coupling 2, and fix the connector 8 on the fixing block 9; embed the air distribution block 602 into the cover plate 601 to ensure that the cover plate 6 can be vented with protective air from both the top and bottom; connect the cover plate 601 and the rotating shaft 7 together with threads.

[0041] Example 2

[0042] Reference Figures 1 to 3 Based on the above embodiments, this embodiment discloses a novel rotating cover plate mechanism. A rotation drive unit is provided between the cover plate 6 and the frame. An air supply unit is provided on the inner side of the frame. A rotating shaft 7 is connected downward to the cover plate 6. The rotation drive unit includes a rotating cylinder 1. The arm end of the rotating cylinder 1 is connected to the rotating shaft 7 through a coupling 2. The air supply unit includes a connector 8 and a fixing block 9 that are interconnected. An axial guide port is provided on the inner side of the fixing block 9. A bearing 4 is provided between the axial guide port and the rotating shaft 7. The upper part of the rotating shaft 7 is a hollow structure that communicates with the axial guide port. The central guide point of the rotating shaft 7 is connected to the air distribution block 602. In this structure, sealing rings 5 ​​are provided at both ends of the axial guide port of the fixing block 9 and between the rotating shaft 7.

[0043] The specific implementation process is as follows: Rotary cylinder 1 opens cover plate 6 horizontally, and the product 102 is manually placed into the groove on end cover 104 above heating platform 103; after the existing pressure claw 101 presses down on product 102, rotary cylinder 1 drives cover plate 6 to rotate 90°, cover plate 6 covers product 102, and protective gas is introduced with the help of gas distribution block 602; heating platform 103 is heated to the set temperature, and chip placement of product 102 begins. After chip placement is completed, heating platform 103 is cooled; when the temperature drops to the set value, gas distribution block 602 shuts off the introduction of protective gas, rotary cylinder 1 drives cover plate 6 to rotate 90° in the opposite direction, removes product 102, and places new product 102.

[0044] Many other changes and modifications can be made without departing from the concept and scope of this utility model. It should be understood that this utility model is not limited to the specific embodiments, and the scope of this utility model is defined by the appended claims.

Claims

1. A novel rotating cover plate mechanism, characterized in that, include: The frame has an end cap (104) with a groove for placing the product (102) and the bottom of the groove is a heating platform (103). A cover plate (6) is provided at the top of the groove. The cover plate (6) includes a plate body (601) and a gas distribution block (602) integrated on the plate body (601). The plate body (601) is provided with an opening (604) that is vertically corresponding to the product (102). The gas distribution block (602) discharges protective gas through the air hole (603) to act on the opening (604), thereby sealing the top of the heating platform (103) from the outside world and preventing the product (102) from oxidizing.

2. The novel rotating cover plate mechanism according to claim 1, characterized in that, The gas distribution block (602) has air holes (603) on both the upper and lower sides of the cover plate (6), and an inclined guide groove (605) is provided on the upper part of the cover plate (6) at the position of the air hole (603).

3. The novel rotating cover plate mechanism according to claim 2, characterized in that, A rotation drive unit is also provided between the cover plate (6) and the frame. The cover plate (6) is connected to a rotating shaft (7) downwards. The rotation drive unit includes a rotary cylinder (1). The arm end of the rotary cylinder (1) is connected to the rotating shaft (7) through a coupling (2).

4. The novel rotating cover plate mechanism according to claim 3, characterized in that, It also includes an air supply unit located inside the frame. The air supply unit includes a connector (8) and a fixing block (9) that are interconnected. The fixing block (9) has an axial guide port on its inner side. A bearing (4) is provided between the axial guide port and the rotating shaft (7). The rotating shaft (7) has a hollow structure above it that communicates with the axial guide port. The center of the rotating shaft (7) is connected to the air distribution block (602).

5. A novel rotating cover plate mechanism according to claim 4, characterized in that, Sealing rings (5) are provided at both ends of the axial guide port of the fixed block (9) and between the rotating shaft (7).

6. A novel rotating cover plate mechanism according to claim 4, characterized in that, The rotating shaft (7) is connected to the fixed block (9) by a locking nut (3).

7. A novel rotating cover plate mechanism according to claim 1, characterized in that, The frame is a frame structure consisting of a base plate (105) and an end cap (104).

8. A novel rotating cover plate mechanism according to claim 1, characterized in that, The end cap (104) has pressure claws (101) on both sides of the groove. The pressure claws (101) on both sides are positioned inward by the driving component and act on the product (102).

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