Aligning floating insert structure for adapting to arbitrary inclination of cooling fin

Abstract

The utility model discloses a self-aligning floating insert structure for adapting to any inclination of a radiating fin, which comprises a pressing block, a gasket, a shoulder type sleeve, a screw and a self-aligning thrust roller bearing, the pressing block and the self-aligning thrust roller bearing are arranged on the shoulder type sleeve, the gasket is arranged between the pressing block and the self-aligning thrust roller bearing, and the screw is arranged on the shoulder type sleeve. The shoulder type sleeve and the pressing block are locked through a screw. According to the utility model, no matter how the radiating fin is inclined, the pressing block can be tightly attached to the surface of the radiating fin, bubbles or gaps are prevented from being generated in the plastic packaging process, and the plastic packaging quality is improved; gaskets with different thicknesses can be replaced to adapt to the actual height error between the cooling fin and the plastic packaging frame.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and in particular relates to a centering floating insert structure for adapting to the arbitrary inclination of a heat sink. Background Art

[0002] At present, during the packaging process of the packaging mold, the exposed surface of the heat sink is affected by factors such as welding process and shrinkage deformation after high temperature treatment, making it difficult for the heat sink to be completely parallel to the horizontal plane. It is usually in an inclined state and the inclination direction and angle are random. The inclination is usually 0.5°-1°. The main function of the heat sink is to dissipate heat. If the heat sink cannot be parallel to the horizontal plane, the surface of the heat sink will be covered with resin after packaging, which may affect the heat dissipation area and heat dissipation effect, resulting in reduced heat dissipation efficiency, and thus affecting the quality of the packaged product. The non-parallelism of the heat sink may cause stress concentration in the mold during operation, increasing the risk of mold cracking or deformation. It may also cause a series of problems, such as mold damage and product quality decline, which will increase the maintenance cost and replacement frequency of the mold, causing unnecessary economic losses to the company.

[0003] At present, the above problems are solved by using fixed pressing blocks (such as Figure 1 However, when the heat sink is tilted, there is an obvious gap between the heat sink and the fixed pressing block or separation membrane, which directly causes glue overflow on the heat sink surface. Glue overflow may reduce the heat dissipation area of ​​the heat sink or generate unnecessary stress, which may affect the long-term stability and reliability of the product. Additional process steps such as cleaning and polishing are also required, which will increase production costs and time. Summary of the invention

[0004] The utility model aims to provide a centering floating insert structure adapted to any tilt of a heat sink, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-aligning floating insert structure for adapting to the arbitrary inclination of the heat sink, comprising a pressure block, a gasket, a shoulder sleeve, a screw and a self-aligning thrust roller bearing, wherein the pressure block and the self-aligning thrust roller bearing are mounted on the shoulder sleeve, a gasket is mounted between the pressure block and the self-aligning thrust roller bearing, and the shoulder sleeve and the pressure block are locked by screws.

[0006] Preferably, there are installation gaps h1 and h2 between the shoulder sleeve and the upper mold cavity base, h1 being the upper and lower gap, and h2 being the left and right gap.

[0007] Preferably, there is an installation gap h3 between the pressing block and the upper mold cavity bar.

[0008] Technical effects and advantages of the utility model:

[0009] 1. Ensure a tight fit: The automatic adjustment function of the floating clamp assembly ensures that the clamp can fit tightly to the surface of the heat sink regardless of how it is tilted. This tight fit helps prevent bubbles or voids from forming during the encapsulation process and improves the quality of the encapsulation.

[0010] 2. Improve production efficiency: Since the floating block assembly can automatically adapt to the tilt changes of the heat sink, there is no need to manually adjust the position of the mold or heat sink, which simplifies the operation process and improves production efficiency.

[0011] 3. Reduce product defect rate: Tight fitting and automatic adjustment functions help reduce adverse factors in the plastic sealing process, such as glue overflow and glue leakage, thereby reducing product defect rate and improving product quality.

[0012] 4. Enhance the versatility of the mold: The design of the floating pressure block assembly enables the mold to adapt to heat sinks with different inclination angles and directions, enhancing the versatility and flexibility of the mold and reducing production costs; by replacing gaskets of different thicknesses to adapt to the actual height error between the heat sink and the plastic packaging frame.

[0013] 5. Optimize heat dissipation performance: By ensuring that the pressing block fits tightly against the heat sink, it helps maintain the flatness of the heat sink surface and reduces the degradation of heat dissipation performance caused by unevenness, thereby optimizing the heat dissipation performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the plastic sealing of the existing plastic sealing mold;

[0015] Figure 2 It is an application schematic diagram of the utility model;

[0016] Figure 3 Schematic diagram of mold opening state;

[0017] Figure 4 This is a schematic diagram of the mold opening state (after the frame is placed, the separation membrane is adsorbed in place);

[0018] Figure 5 Schematic diagram of mold closing state;

[0019] Figure 6 This is a schematic diagram of the state after angle adjustment.

[0020] In the figure: 1 packaging frame, 2 upper model cavity strip, 3 upper model cavity base, 4 self-aligning thrust roller bearing, 5 screw, 6 shoulder sleeve, 7 gasket, 8 pressure block, 9 lower membrane cavity strip base, 10 separation membrane. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 2-Figure 6 A specific implementation of the utility model is shown, which is a self-aligning floating insert structure for adapting to arbitrary inclination of the heat sink: it includes a pressing block 8, a gasket 7, a shoulder sleeve 6, a screw 5 and a self-aligning thrust roller bearing 4, the pressing block 8 and the self-aligning thrust roller bearing 4 are installed on the shoulder sleeve 6, the gasket 7 is installed between the pressing block 8 and the self-aligning thrust roller bearing 4, the shoulder sleeve 6 and the pressing block 8 are locked by the screw 5; there are installation gaps h1 and h2 between the shoulder sleeve 6 and the upper mold cavity base 3, h1 is the upper and lower gap, and h2 is the left and right gap; there is an installation gap h3 between the pressing block 8 and the upper mold cavity strip 2,

[0023] like Figure 3 As shown, in the mold opening state, this self-aligning floating insert structure falls under the action of gravity, making the gap h1 0;

[0024] Before mold closing, the separation membrane 10 passes through the upper mold adsorption hole and is closely attached to the surface of the upper mold cavity bar 2 and the pressing block 8. The packaging frame 1 is located between the upper mold cavity bar 2 and the lower mold cavity bar 9.

[0025] like Figure 5 As shown, when the mold is closed, the packaging frame 1 is tightly attached to the separation membrane 10 and pushes the aligning floating insert structure upward, and then the resin filling begins. During the resin filling process, the heat sink on the packaging frame 1 is squeezed by the resin and pushes the floating pressure block assembly to continue to move upward to the limit, so that the inner ring, roller and outer ring of the thrust spherical roller bearing are in close contact, and the gap h1 reaches the preset value until the resin filling is completed.

[0026] As attached Figure 6 As shown, this structure utilizes the self-aligning ability of the self-aligning thrust roller bearing 4 (the maximum self-aligning angle is 2°) to achieve automatic adjustment of the floating pressure block assembly with any tilt angle and any tilt direction of the heat sink within a certain angle range (0°-2°), thereby ensuring a close fit between the two.

[0027] The applicant further declares that the present invention illustrates the implementation method and device structure of the present invention through the above embodiments, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above methods and structures to be implemented. Those skilled in the art should understand that any improvement to the present invention, equivalent replacement of the implementation method selected by the present invention, addition of steps, selection of specific methods, etc., all fall within the scope of protection and disclosure of the present invention.

[0028] The present invention is not limited to the above-mentioned embodiments, and all methods that use structures and methods similar to the present invention to achieve the purpose of the present invention are within the protection scope of the present invention.

Claims

1. A self-aligning floating insert structure for adapting to the arbitrary tilt of the heat sink, Features: The invention comprises a pressure block (8), a gasket (7), a shoulder sleeve (6), a screw (5) and a self-aligning thrust roller bearing (4); the pressure block (8) and the self-aligning thrust roller bearing (4) are mounted on the shoulder sleeve (6); a gasket (7) is mounted between the pressure block (8) and the self-aligning thrust roller bearing (4); and the shoulder sleeve (6) and the pressure block (8) are locked by means of a screw (5).

2. A centering floating insert structure for adapting to arbitrary inclination of a heat sink according to claim 1, Features: There are installation gaps h1 and h2 between the shoulder sleeve (6) and the upper mold cavity base (3), where h1 is the upper and lower gap and h2 is the left and right gap.

3. A self-aligning floating insert structure for adapting to arbitrary inclination of a heat sink according to claim 1, Features: There is an installation gap h3 between the pressing block (8) and the upper mold cavity strip (2).

Images