An airtight welding tool for elastic connection of T / R assembly and a method of using the same

Abstract

The application discloses airtight seal welding tool for T / R assembly elastic connection, which comprises a base, a bottom magnet is installed on the bottom of the base, the top surface of the base is grooved and a through hole is formed in the groove bottom, a T / R assembly shell is installed in the groove, a T / R assembly cover plate is installed above the T / R assembly shell; a pressing block is arranged above the T / R assembly cover plate, a top magnet is placed in the groove of the pressing block, and an elastic clamping part is arranged on the top of the base, one end of the elastic clamping part is detachably installed on the base, and the other end can rotate and abut against the pressing block. The bottom magnet cooperates with the top magnet to realize fastening and limiting of the T / R assembly shell and the T / R assembly, three uniform distributed downward pressures from the edge to the center of the T / R assembly cover plate can be formed, the airtight seal welding is almost not affected by the poor glove perception elastic force, the airtight seal welding failure caused by the elastic connector and leading to the inclination or warping of the cover plate is completely eliminated, and the one-time airtight seal welding yield is improved from 50% to above 99%.

Description

Technical Field

[0001] This invention relates to the field of microelectronic packaging technology, specifically to a gas-tight welding fixture for flexible connection of T / R components and its usage method. Background Technology

[0002] As microelectronic packaging technology for transceiver (T / R) modules evolves from traditional 2D planar micro-assembly to 2.5D and 3D stereoscopic packaging, the technological limits of 2D planar assembly have been reached. Vertical interconnection technology, based on fasteners and flexible connectors, has gradually become one of the key development directions for the industry. Vertical interconnection technology offers numerous advantages, including short interconnect paths, high space utilization, and high speed, making it crucial for the development of lightweight, miniaturized, and multifunctional integrated technologies for T / R modules.

[0003] However, when using flexible connectors such as snap buttons and elastic plugs in vertical interconnect T / R assemblies, the following problems arise: ① Due to the height requirements of the optical alignment instruments in the gas-tight welding equipment, the height of the metal pressure block on the T / R assembly cover plate is limited, generally not exceeding 30-50mm. Furthermore, because the weld seam needs to be exposed and the edge of the cover plate is difficult to distribute force evenly, simply using the metal pressure block to hold the cover plate down cannot provide sufficient downward pressure, and the uneven force distribution on the cover plate edge leads to the T / R assembly cover plate being lifted and tilting under the elastic force of the connector, causing frequent sealing failures; ② To eliminate the influence of the elastic force, clamps are often used. The process involves multiple clamping and disassembly steps, resulting in extremely low efficiency. The T / R module's gas-tight welding process requires an inert atmosphere. The above operations must be performed in a glove box. Wearing gloves reduces the perception of elasticity, making it difficult to ensure flatness during assembly. Currently, the failure rate and sealing efficiency of gas-tight welding for elastic connection T / R modules remain high, severely restricting the application of related vertical interconnect T / R modules.

[0004] Therefore, in the face of the rapid development of demand for vertical interconnect T / R components, it is essential to invent a gas-tight welding fixture and its application method for elastic connection T / R components that has balanced downward pressure to eliminate the influence of elasticity and has high sealing efficiency. Summary of the Invention

[0005] The technical problem to be solved by this invention is: how to provide a gas-tight welding fixture for a flexible connection T / R assembly with high sealing efficiency and its usage method.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A gas-tight welding fixture for flexible connection of T / R components includes a base, a bottom magnet installed at the bottom of the base, a groove on the top surface of the base with a through hole at the bottom of the groove, a T / R component housing installed in the groove, and a T / R component cover plate installed above the T / R component housing; a pressure block is provided above the T / R component cover plate, a top magnet is placed in the groove of the pressure block, and an elastic locking member is provided on the top of the base, wherein one end of the elastic locking member can be detached to the base, and the other end can rotate and abut against the pressure block.

[0008] This invention uses a base to place the T / R component housing and T / R component cover plate inside the base. The upper part is positioned by a pressure block, a top magnet, and an elastic locking component. The bottom part uses a bottom magnet in conjunction with the top magnet to fasten and limit the T / R component housing and T / R component. This can form a triple downward pressure evenly distributed from the edge of the T / R component cover plate to the center of the cover plate. Moreover, the assembly is almost unaffected by the poor elasticity of gloves. It completely eliminates the gas seal welding failure caused by the tilting or warping of the cover plate due to the elastic connector. The yield of the first gas seal welding is increased from 50% to over 99%.

[0009] As a further aspect of the present invention: the elastic locking component includes an Ω-shaped spring sheet, a spring, and a screw, wherein one end of the Ω-shaped spring sheet is detachably mounted to the base by the screw, the screw is fitted with a spring, and the other end of the Ω-shaped spring sheet is in contact with the pressure block.

[0010] As a further aspect of the present invention: the bottom of the base is provided with a cover plate, and "L"-shaped sliders are provided on both sides of the cover plate. Slide grooves are provided on both sides of the base at a lower position, and the sliders can be slidably connected to the inside of the slide grooves.

[0011] As a further aspect of the present invention: the T / R component housing and the upper T / R component cover are connected by a snap fastener in an elastic manner.

[0012] As a further aspect of the present invention: one end of the Ω-shaped spring sheet has a cylindrical through hole, and its combination with the spring can rotate freely, and the through hole of the Ω-shaped spring sheet is connected by a screw.

[0013] As a further aspect of the present invention, the bottom magnet and the top magnet are selected from magnets with a temperature resistance of ≥150℃.

[0014] The present invention also discloses a method for using a gas-tight welding fixture for a flexible connection of a T / R assembly, characterized by comprising the following steps: S1: Insert the bottom magnet into the bottom groove of the base and install the bottom cover plate; S2: Install the Ω-shaped spring sheet and spring into the threaded hole on the top surface of the base with screws, and rotate the Ω-shaped spring sheet to completely empty the top slot of the base used to place the T / R component housing; S3: Place the T / R module housing in the groove on the top surface of the base. Install the T / R module cover plate on top of the housing. Place the combination of the pressure block and the top magnet on the cover plate. Pay attention to the magnetic pole direction of the magnet to ensure that it forms an attractive force with the bottom magnet. S4: Rotate the Ω-shaped spring sheet to press the far end of the spring sheet onto the cover plate; S5: Pre-weld 4-20 points evenly at the weld between the T / R module housing and the T / R module cover plate for pre-welding and fixing. Note that the pre-welded points should not be set at the weld position pressed by the far end of the spring sheet. S6: Rotate the Ω-shaped spring sheet to fully expose the weld between the pre-fixed housing and the cover plate; S7: Set the gas seal welding path according to the weld between the shell and the cover plate, and complete the gas seal welding; S8: Take out the T / R component that has been sealed and welded, and repeat S3-S7 to complete the gas-tight welding process of the new T / R component.

[0015] As a further aspect of the present invention, the gas-tight welding method in step S7 includes, but is not limited to, parallel seam welding, laser sealing welding, and soft soldering.

[0016] As a further aspect of the present invention: the pressure block, the top magnet, and the spring sheet form a triple downward pressure between the T / R component housing and the T / R component cover plate, and the pressure is evenly distributed from the edge of the T / R component cover plate to the center of the cover plate, effectively eliminating the problem of gas seal welding failure of the T / R component caused by the elastic connection method.

[0017] As a further aspect of the present invention, the base and the pressure block are made of materials with high density and high thermal conductivity, such as copper, silver, or graphene-doped metals.

[0018] Compared with the prior art, the beneficial effects of the present invention are: First, this invention sets up a base, placing the T / R component housing and T / R component cover plate inside the base. The upper part is positioned by a pressure block, a top magnet, and an elastic locking component. The bottom part uses a bottom magnet in conjunction with the top magnet to fasten and limit the T / R component housing and T / R component. This can form a triple downward pressure evenly distributed from the edge of the T / R component cover plate to the center of the cover plate. Moreover, the fitting is almost unaffected by the poor elasticity of gloves. It completely eliminates the gas seal welding failure caused by the tilting or warping of the cover plate due to the elastic connector. The yield of the first gas seal welding is increased from 50% to over 99%. Secondly, this invention uses a rotatable Ω-shaped spring sheet, which, when pressed against the cover plate, provides sufficient exposure of the weld seam for pre-tack welding. After pre-tack welding, rotating the Ω-shaped spring sheet by 90° fully exposes the weld seam between the shell and the cover plate, allowing for direct gas-tight welding. Compared to existing techniques that use clamps to hold components together for pre-tack welding before gas-tight welding, this invention improves gas-tight welding efficiency by 5-10 times. Furthermore, the application of this invention is not limited to gas-tight welding processes and can be extended to gas-tight welding methods such as parallel seam welding, laser sealing welding, and soft soldering. Attached Figure Description

[0019] Figure 1 This is an exploded structural diagram of a gas-tight welding fixture for elastic connection of a T / R component according to an embodiment of the present invention; Figure 2 This is a front sectional view of a gas-tight welding fixture for elastic connection of a T / R component according to an embodiment of the present invention; Figure 3 This is a front view of a gas-tight welding fixture for flexible connection of T / R components according to an embodiment of the present invention; Figure 4 This is a top view of a gas-tight welding fixture for flexible connection of T / R components according to an embodiment of the present invention; Figure 5 This is a schematic diagram of parallel seam welding used in Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of laser sealing used in Embodiment 3 of the present invention; Figure 7 This is a schematic diagram of the use of soft soldering in Embodiment 4 of the present invention; Explanation of reference numerals in the attached diagram: 1. Base; 2. Bottom magnet; 3. Cover plate; 4. T / R module housing; 5. T / R module cover plate; 6. Ω-shaped spring sheet; 7. Spring; 8. Screw; 9. Pressure block; 10. Top magnet. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1 Reference Figure 1 , Figure 2 , Figure 3 and Figure 4A gas-tight welding fixture for elastic connection of T / R components includes a base 1, a bottom magnet 2, a cover plate 3, an Ω-shaped spring sheet 6, a spring 7, a screw 8, a pressure block 9, and a top magnet 10.

[0022] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The base 1 has a rectangular structure, and both the top and bottom of the base 1 are slotted. The top slot and the bottom slot are connected by several through holes, which facilitates the improvement of magnetic flux. The top slot is used to install the T / R component housing 4 and the T / R component cover plate 5, and the bottom slot is used to place the bottom magnet 2. At the same time, there are also sliding grooves on both sides of the lower part of the base 1. Several screw mounting holes are also opened around the top of the base 1 for connecting with screws 8. In order to facilitate heat dissipation, the base 1 is made of copper.

[0023] Reference Figure 1 The bottom magnet 2 is placed in a rectangular shape in the groove at the bottom of the base 1 and is limited by the cover plate 3. The bottom magnet 2 can work with the top magnet 10 to limit the T / R component housing 4 and the T / R component cover plate 5. The top magnet 10 will be described below. In order to prevent demagnetization, the bottom magnet 2 and the top magnet 10 are made of heat-resistant neodymium magnets.

[0024] Reference Figure 1 The cover plate 3 is a plate-shaped structure with "L"-shaped sliders at both ends. The "L"-shaped sliders at both ends can slide into the grooves opened on both sides of the base 1. After the cover plate 3 is installed on the outside of the base 1, it can just cover the magnet 2 and limit the magnet 2 to the bottom groove of the base 1.

[0025] Reference Figure 1 A T / R component cover plate 5 is mounted on the T / R component housing 4, and a flexible vertical connector based on a hair button is mounted on the cover plate 5.

[0026] Reference Figure 1 , Figure 2 and Figure 3The Ω-shaped spring sheet 6 and spring 7 can be rotated to change different angles. After the T / R module cover plate 5 and T / R module housing 4 are installed, when it is necessary to apply downward pressure to the edge of the T / R module cover plate 5, the Ω-shaped spring sheet 6 is rotated to press the far end onto the T / R module cover plate 6, followed by pre-welding and fixing. When it is necessary to perform complete gas-tight welding after pre-welding, the Ω-shaped spring sheet 6 is rotated to fully expose the weld seam, and then the complete gas-tight welding process can be achieved in one go. To ensure downward pressure, the Ω-shaped spring sheet 6 is made of steel. This application has four sets of Ω-shaped spring sheets 6, which are equidistantly distributed. In actual use, the number of Ω-shaped spring sheets 6 can be determined according to the actual situation. This application does not limit this number, but only provides one embodiment.

[0027] Reference Figure 1 One end of the Ω-shaped spring plate 6 has a cylindrical through hole, which is connected by a screw 8. A spring 7 is sleeved on the outside of the screw 8. The combination of the Ω-shaped spring plate 6 and the spring 7 can rotate freely.

[0028] Reference Figure 1 and Figure 2 The pressure block 9 has a rectangular block structure. A groove is provided in the middle of the pressure block 9 to hold the top magnet 10. The other end of the Ω-shaped spring sheet 6 can press against the pressure block 9 to limit the pressure block 9, the bottom T / R component cover plate 5, and the T / R component housing 4.

[0029] In order to prevent mistakes and facilitate application and popularization, this invention addresses the impact of elastic connectors on the gas-tight welding of T / R component cover plates by setting up a pressure block 9, a top magnet 10, and an Ω-shaped spring sheet 6. This forms three uniformly distributed downward pressures from the center to the edge of the cover plate, effectively eliminating the tilting or warping of the T / R cover plate during gas-tight welding caused by elasticity.

[0030] The specific operating principle of this application is as follows: S1: Insert the bottom magnet 2 into the bottom groove of the base 1 and install the bottom cover plate 3; S2: Install the Ω-shaped spring plate 6 and spring 7 into the threaded hole on the top surface of the base 1 with screws, and rotate the Ω-shaped spring plate 6 to completely empty the top slot of the base used to place the T / R component housing 4. S3: Place the T / R component housing 4 into the groove on the top surface of the base 1. Install the T / R component cover plate 5 on the top of the housing. Place the combination of the pressure block 9 and the top magnet 10 on the T / R component cover plate 5. Pay attention to the direction of the magnetic poles of the magnets to ensure that they form an attractive force with the bottom magnet 2. S4: Rotate the Ω-shaped spring sheet 6 to press the far end of the spring sheet onto the T / R assembly cover plate 5; S5: Pre-weld 4-20 points evenly at the weld between the T / R module housing 4 and the T / R module cover plate 5 for pre-welding and fixing. Note that the pre-welded points should not be set at the weld position pressed by the far end of the spring sheet 6. S6: Rotate the Ω-shaped spring plate 6 to fully expose the weld between the pre-fixed T / R component housing 4 and the T / R component cover plate 5; S7: Set the gas-tight welding path according to the weld between the T / R component housing 4 and the T / R component cover plate 5, and complete the gas-tight welding; S8: Take out the T / R component that has been sealed and welded, and repeat S3-S7 to complete the gas-tight welding process of the new T / R component.

[0031] Example 2 Reference Figure 5 Unlike Example 1, Example 2, for T / R assemblies with Kovar alloy covers and housings, preferably uses a parallel seam welding process for gas-tight welding of the T / R assembly. The parallel seam welding method is as follows: ① Assemble the tooling and T / R assembly according to steps S1~S4; ② During S5, according to... Figure 5 As shown, four "L"-shaped welds are pre-welded at the corners of the T / R cover plate; ③ Complete the parallel seam welding process of the T / R assembly according to S6~S7; the "L"-shaped welds are as follows Figure 5 As shown.

[0032] Example 3 Reference Figure 6 Unlike Example 1, Example 3, for T / R assemblies with cover plates and housings made of aluminum alloy, aluminum-silicon alloy, titanium alloy, etc., preferably uses laser sealing welding for gas-tight welding of the T / R assemblies. The circular weld points are shown in the attached figure. Figure 6 As shown, the method is as follows: ① Assemble the tooling and T / R components according to steps S1~S4; ② During process S5, follow... Figure 6 As shown, pre-apply 8 to 16 circular solder points on the four sides of the T / R cover plate; ③ Complete the laser sealing process of the T / R assembly according to S6 to S7.

[0033] Example 4 Reference Figure 7 Unlike Example 1, Example 4, for T / R assemblies made of difficult-to-weld metals (such as magnesium alloys) with cover plates and housings, preferably uses a soft soldering process for gas-tight welding of the T / R assembly. The method is as follows: ① Assemble the tooling and T / R assembly according to patent steps S1-S4; ② During step S5... Figure 7 As shown, 8 brazing seams are pre-welded on the four sides of the T / R cover plate; ③ Complete the soft brazing process of the T / R assembly according to S6~S7, where the brazing seams are shown in the attached figure. Figure 7 As shown.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas-tight welding fixture for elastic connection of T / R components, characterized in that, Includes a base (1), a bottom magnet (2) is installed at the bottom of the base (1), the top surface of the base (1) is slotted and a through hole is opened at the bottom of the slot, a T / R component housing (4) is installed in the slot, and a T / R component cover plate (5) is installed on the top of the T / R component housing (4). A pressure block (9) is provided above the cover plate (5) of the T / R component. A top magnet (10) is placed in the groove of the pressure block (9). An elastic locking member is provided on the top of the base (1). One end of the elastic locking member can be detached from the base (1), and the other end can rotate and abut against the pressure block (9). The elastic locking component includes an Ω-shaped spring sheet (6), a spring (7) and a screw (8). One end of the Ω-shaped spring sheet (6) is detachably installed on the base (1) by the screw (8). The spring (7) is sleeved on the screw (8). The other end of the Ω-shaped spring sheet (6) is in contact with the pressure block (9). One end of the Ω-shaped spring sheet (6) has a cylindrical through hole, and its combination with the spring (7) can rotate freely. The through hole of the Ω-shaped spring sheet (6) is connected by a screw (8).

2. The gas-tight welding fixture for flexible connection of T / R components according to claim 1, characterized in that: The base (1) has a cover plate (3) at the bottom, and "L"-shaped sliders are provided on both sides of the cover plate (3). Slide grooves are provided on both sides of the base (1) at a lower position, and the sliders can slide to the inside of the slide grooves.

3. The gas-tight welding fixture for flexible connection of T / R components according to claim 1, characterized in that: The T / R component housing (4) and the upper T / R component cover plate (5) are connected by a snap fastener in an elastic manner.

4. The gas-tight welding fixture for flexible connection of T / R components according to claim 1, characterized in that: The bottom magnet (2) and the top magnet (10) are selected from magnets with a temperature resistance of ≥150℃.

5. The method of using the gas-tight welding fixture for flexible connection of T / R components as described in any one of claims 1-4, characterized in that, Includes the following steps: S1: Insert the bottom magnet into the bottom groove of the base and install the bottom cover plate; S2: Install the Ω-shaped spring sheet and spring into the threaded hole on the top surface of the base with screws, and rotate the Ω-shaped spring sheet to completely empty the top slot of the base used to place the T / R component housing; S3: Place the T / R module housing in the groove on the top surface of the base. Install the T / R module cover plate on top of the housing. Place the combination of the pressure block and the top magnet on the cover plate. Pay attention to the magnetic pole direction of the magnet to ensure that it forms an attractive force with the bottom magnet. S4: Rotate the Ω-shaped spring sheet to press the far end of the spring sheet onto the cover plate; S5: Pre-weld 4-20 points evenly at the weld between the T / R module housing and the T / R module cover plate for pre-welding and fixing. Note that the pre-welded points should not be set at the weld position pressed by the far end of the spring sheet. S6: Rotate the Ω-shaped spring sheet to fully expose the weld between the pre-fixed housing and the cover plate; S7: Set the gas seal welding path according to the weld between the shell and the cover plate, and complete the gas seal welding; S8: Take out the T / R component that has been sealed and welded, and repeat S3-S7 to complete the gas-tight welding process of the new T / R component.

6. The method of using the gas-tight welding fixture for flexible connection of T / R components according to claim 5, characterized in that: The gas-tight welding method in step S7 includes parallel seam welding, laser sealing welding, and soft soldering.

7. The method of using the gas-tight welding fixture for flexible connection of T / R components according to claim 5, characterized in that: The pressure block, top magnet, and spring sheet form a triple downward pressure between the T / R module housing and the T / R module cover plate, and the pressure is evenly distributed from the edge of the T / R module cover plate to the center of the cover plate.

8. The method of using the gas-tight welding fixture for flexible connection of T / R components according to claim 5, characterized in that: The base and the pressure block are made of copper, silver, or graphene-doped metals with high density and high thermal conductivity.

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