A welding fixture for a slot antenna

Abstract

The utility model discloses a kind of welding tool of slot antenna belongs to welding tool technical field. Including base and substrate, the fastening bolt for being used to fix the both is arranged between the base and substrate, the positioning groove for placing antenna sheet is provided at the base top, the pressure block for being used to press to antenna sheet is provided at the substrate bottom, wherein, the elastic component for providing persistence pressure to improve antenna welding reliability is arranged between the pressure block and substrate;The utility model is by the elastic component between pressure block and substrate, can exert uniform pressure to antenna sheet during welding process, even if solder melting leads to gap change, pressure can still keep stable, effectively avoid the problem that welding is not tight due to pressure drop, significantly improve the reliability and consistency of antenna welding.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, and in particular to a welding fixture for a slot antenna. Background Technology

[0002] Due to their special mechanical structure, waveguide slot antennas usually require the upper and lower antenna pieces to be processed separately and then assembled using a eutectic bonding process. In existing processes, tin sheets are generally used as solder, and tooling fixtures are used to position and press the antennas, which are then fixed with screws.

[0003] However, during the welding process, the tin sheet melts and flows and diffuses in the preset solder bath after being heated, which reduces the assembly gap between the upper and lower antenna pieces. Since the screw positions of the current tooling fixture are fixed, they cannot adaptively compensate for the gap changes, resulting in a decrease in the clamping stress, which affects the welding tightness of the antenna pieces and ultimately has an adverse effect on the overall electrical performance of the antenna. Therefore, this application proposes a welding fixture for slot antennas to solve the shortcomings of the prior art. Utility Model Content

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a welding fixture for slot antennas.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A welding fixture for a slot antenna includes a base and a substrate. A fastening bolt is provided between the base and the substrate to fix the two together. A positioning groove for placing an antenna piece is provided on the top of the base. A pressure block for applying pressure to the antenna piece is provided on the bottom of the substrate. An elastic component is provided between the pressure block and the substrate to provide continuous pressure to improve the reliability of antenna welding.

[0006] As a preferred technical solution of this application, a connecting bolt is provided between the substrate and the pressure block, wherein the connecting bolt is threadedly connected to the pressure block and slidably connected to the substrate.

[0007] As a preferred technical solution of this application, the top of the pressure block is provided with an installation groove, the inside of the installation groove is provided with a threaded post that is threadedly connected to the connecting bolt, and the base plate is provided with a through groove for the connecting bolt to pass through.

[0008] As a preferred technical solution of this application, the elastic component includes a spring disposed between the substrate and the pressure block, wherein the bottom of the substrate is provided with a groove that cooperates with the spring, and both the mounting groove and the groove are provided with positioning posts that cooperate with the spring to limit its movement.

[0009] As a preferred technical solution of this application, the spring and the positioning post are arranged in several groups.

[0010] As a preferred technical solution of this application, both the substrate and the base are provided with through grooves that cooperate with fastening bolts, and the bottom of the base is provided with fitting grooves that cooperate with fastening bolts.

[0011] As a preferred technical solution of this application, the fastening bolt includes a screw head, a connecting rod disposed at the bottom of the screw head, and a limiting plate disposed at the bottom of the connecting rod.

[0012] Compared with the prior art, the present invention provides a welding fixture for slot antennas, which has the following advantages: 1. The welding fixture for this slot antenna, through the elastic component set between the pressure block and the substrate, can apply continuous and uniform pressure to the antenna piece during the welding process. Even if the solder melts and causes the gap to change, the pressure can remain stable, effectively avoiding the problem of loose welding caused by pressure drop, and significantly improving the reliability and consistency of antenna welding. 2. The welding fixture for this slot antenna uses a bolted connection clamping method, which makes the device structure compact, easy to clamp and disassemble, convenient to use, and effectively improves production efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is the front view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a schematic diagram of the disassembled structure of this utility model. Figure 1 ; Figure 5 This is a schematic diagram of the disassembled structure of this utility model. Figure 2 ; Figure 6 This is a schematic diagram of the structure of the pressure block in this utility model; Figure 7 This is a schematic diagram of the substrate structure in this utility model; Figure 8 This is a schematic diagram of the fastening bolt in this utility model.

[0014] In the picture: 100. Base; 101. Positioning groove; 102. Fitting groove; 200. Base plate; 201. Pressure block; 2011. Mounting groove; 2012. Threaded post; 2013. Through groove; 2014. Groove; 2015. Positioning post; 202. Connecting bolt; 300. Elastic component; 301. Spring; 400. Fastening bolt; 401. Screw head; 402. Connecting rod; 403. Limiting plate; 500. Through groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example

[0016] Reference Figure 1-4 A welding fixture for a slot antenna includes a base 100 and a substrate 200. A fastening bolt 400 is provided between the base 100 and the substrate 200 to secure them. A positioning groove 101 for placing an antenna piece is provided on the top of the base 100, and a pressure block 201 for applying pressure to the antenna piece is provided on the bottom of the substrate 200. An elastic component 300 is provided between the pressure block 201 and the substrate 200 to provide continuous pressure and improve the reliability of antenna welding. In use, the antenna pieces to be welded are placed sequentially inside the positioning groove 101, and then the substrate 200 and base 100 are initially fixed by the fastening bolt 400. Under the elastic force of the elastic component 300, the pressure block 201 applies a continuous preload to the antenna piece, ensuring that the pressure on the waveguide slot antenna remains uniform during welding and does not decrease due to solder melting, thereby improving the reliability of antenna welding.

[0017] Reference Figure 1-6 A connecting bolt 202 is provided between the substrate 200 and the pressure block 201, wherein the connecting bolt 202 is threadedly connected to the pressure block 201 and slidably connected to the substrate 200. The pressure block 201 has a mounting groove 2011 on its top. Inside the mounting groove 2011 is a threaded post 2012 that connects to the threaded connection of the connecting bolt 202. The base plate 200 has a through groove 2013 for the connecting bolt 202 to pass through. Specifically, the pressure block 201 and the base plate 200 are connected by the connecting bolt 202 to prevent them from separating. Furthermore, the connecting bolt 202 has a through groove 2013, the diameter of which is slightly larger than the diameter of the connecting bolt 202, allowing the connecting bolt 201 to pass through. 2. It can slide relative to each other within the through slot 2013. It should be noted that there is a certain gap between the substrate 200 and the pressure block 201 under the action of the elastic member 300. When the substrate 200 moves downward, the pressure block 201 will first act on the antenna sheet. When the pressure is continued to be applied, the elastic member 300 is compressed, and the connecting bolt 202 will slide relative to the substrate 200. Therefore, the elastic member 300, when combined with external pressure, can make the pressure block 201 maintain a uniform and stable continuous pressure on the antenna.

[0018] Reference Figure 2 and Figures 4-7 The elastic component 300 includes a spring 301 disposed between the substrate 200 and the pressure block 201. The bottom of the substrate 200 is provided with a groove 2014 that cooperates with the spring 301. Both the mounting groove 2011 and the groove 2014 are provided with positioning posts 2015 that cooperate with the spring 301 to limit its movement. By providing the groove 2014 and the positioning posts 2015, the spring 301 can be conveniently and stably disposed between the substrate 200 and the pressure block 201, providing good uniform and stable application of pressure when pressure is applied. It should be noted that the elastic component 300 in this application can be made of other elastic materials instead of spring 301.

[0019] To better provide uniformity of applied pressure, the spring 301 and the positioning post 2015 are arranged in several groups.

[0020] Reference Figures 1-5 as well as Figure 8 Both the substrate 200 and the base 100 are provided with through grooves 500 that cooperate with fastening bolts 400, and the bottom of the base 100 is provided with fitting grooves 102 that cooperate with fastening bolts 400. The fastening bolt 400 includes a screw head 401, a connecting rod 402 located at the bottom of the screw head 401, and a limiting plate 403 located at the bottom of the connecting rod 402. Specifically, in use, the limiting plate 403 is aligned with the through groove 500, inserted downwards and through to the bottom of the base 100, and then the screw head is rotated so that the limiting plate 403 and the through groove 500 intersect. At this time, the pressure block 201 can be pressed onto the antenna sheet, and then heated and welded. It should be noted that the screw head can be a flat screw head, a Phillips head, or a swivel head structure to facilitate the rotation of the screw head. With the matching groove 102, the base 100 can be kept in a horizontal state without affecting the stability of the base 100, and the stability of the fastening bolt 400 during rotation can also be improved.

[0021] Specifically, when using the welding fixture for this slotted antenna: first, the upper and lower antenna pieces to be welded are placed in the positioning grooves 101 of the base 100 for positioning; then, the substrate 200 is initially fixed to the base 100 by the fastening bolts 400; at this time, the pressure block 201 at the bottom of the substrate 200 applies a continuous preload force to the antenna piece under the action of the elastic member 300. During the welding heating process, as the solder melts, the gap between the antenna pieces may change. Since the pressure block 201 and the substrate 200 are provided with an elastic component 300, the elastic component 300 can automatically compensate for the gap changes caused by thermal deformation or solder flow under the action of the elastic force, and always maintain a uniform pressing force on the antenna pieces to avoid pressure relaxation. After welding, the solder cools and solidifies, forming a dense and reliable weld. The welded antenna assembly can be easily removed after loosening the fastening bolt 400. Throughout the welding process, the continuous pressure provided by the elastic component 300 effectively ensures the stability of the welding interface, thereby improving the electrical performance and mechanical reliability of the antenna product.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A welding fixture for a slot antenna, comprising a base (100) and a substrate (200), characterized in that, A fastening bolt (400) is provided between the base (100) and the substrate (200) for fixing the two. A positioning groove (101) for placing the antenna piece is provided on the top of the base (100). A pressure block (201) for applying pressure to the antenna piece is provided on the bottom of the substrate (200). An elastic component (300) for providing continuous pressure to improve the reliability of antenna welding is provided between the pressure block (201) and the substrate (200).

2. The welding fixture for a slot antenna according to claim 1, characterized in that, A connecting bolt (202) is provided between the substrate (200) and the pressure block (201), wherein the connecting bolt (202) is threadedly connected to the pressure block (201) and slidably connected to the substrate (200).

3. The welding fixture for a slot antenna according to claim 1, characterized in that, The top of the pressure block (201) is provided with an installation groove (2011), and the installation groove (2011) is provided with a threaded post (2012) that is threadedly connected to the connecting bolt (202). The base plate (200) is provided with a through groove (2013) for the connecting bolt (202) to pass through.

4. The welding fixture for a slot antenna according to claim 3, characterized in that, The elastic component (300) includes a spring (301) disposed between the base plate (200) and the pressure block (201), wherein the bottom of the base plate (200) is provided with a groove (2014) that cooperates with the spring (301), and both the mounting groove (2011) and the groove (2014) are provided with positioning posts (2015) that cooperate with the spring (301) to limit its movement.

5. The welding fixture for a slot antenna according to claim 4, characterized in that, The spring (301) and the positioning post (2015) are arranged in several groups.

6. The welding fixture for a slot antenna according to claim 1, characterized in that, Both the base plate (200) and the base (100) are provided with through grooves (500) that cooperate with fastening bolts (400), and the bottom of the base (100) is provided with fitting grooves (102) that cooperate with fastening bolts (400).

7. The welding fixture for a slot antenna according to claim 1, characterized in that, The fastening bolt (400) includes a screw head (401), a connecting rod (402) disposed at the bottom of the screw head (401), and a limiting plate (403) disposed at the bottom of the connecting rod (402).

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