5G ceramic filter welding tool and welding method

Abstract

The application discloses a 5G ceramic filter welding tool and a welding method. The welding tool comprises a first component, a second component and a third component. The first component and the second component are oppositely arranged and are configured to press and place a PCB board and a ceramic block to be welded together. The third component is detachably connected with the first component or the second component, and a plurality of limiting pieces corresponding to the ceramic block are arranged on the third component. One end of the limiting piece penetrates through the PCB board and extends to the side surface of the ceramic block, and the limiting piece is configured to limit the relative position of the PCB board and the ceramic block. The third component is further configured to be removed from the product to be welded after the PCB board and the ceramic block are positioned and before the product to be welded enters the welding equipment. The application can improve the welding precision of the ceramic filter, improve the production efficiency and reduce the production cost.

Description

Technical Field

[0001] This invention relates to the field of filter technology, and in particular to a welding fixture and welding method for 5G ceramic filters. Background Technology

[0002] Ceramic filters have become a crucial component of 5G MIMO (Multi-Input Multi-Output) communication base stations. Since 5G MIMO antennas are array-based, a single AFU (Antenna Filter Unit) antenna typically uses 32 or 64 ceramic filters. Because multiple filters need to be mounted simultaneously, a single poor solder joint will render the entire AFU antenna defective. Therefore, the dimensional requirements for each filter during AFU antenna manufacturing are extremely stringent.

[0003] Ceramic filters typically consist of three parts: a PCB substrate, a ceramic body, and pins. Currently, ceramic filter manufacturers face the problem of large fluctuations in soldering yield. Among these issues, dimensional defects after soldering account for the largest proportion of defects, leading to increased product costs and reduced market competitiveness.

[0004] The above background information is provided only to assist in understanding the concept and technical solution of this invention. It does not necessarily belong to the prior art of this patent application, nor does it necessarily provide technical teaching. In the absence of clear evidence that the above information was disclosed before the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0005] The purpose of this invention is to provide a 5G ceramic filter welding fixture and welding method, which can improve the welding accuracy of ceramic filters, increase production efficiency and reduce production costs.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A 5G ceramic filter welding fixture includes a first component, a second component, and a third component, wherein the first component and the second component are arranged opposite to each other, and a PCB board and a ceramic block to be welded are arranged between the first component and the second component, and the first component and the second component are configured to press the PCB board and the ceramic block together;

[0008] The third component is detachably connected to the first component or the second component and is configured to position the PCB board and the ceramic block before the product is soldered. The third component is provided with a plurality of limiting members that correspond one-to-one with the ceramic block. One end of the limiting member passes through the PCB board and extends to the side of the ceramic block, and is configured to limit the relative position of the PCB board and the ceramic block.

[0009] The third component is also configured to be removed from the product to be welded after the PCB board and the ceramic block have been positioned and before the product to be welded enters the welding equipment.

[0010] Furthermore, based on any or a combination of the aforementioned technical solutions, the lower part of the inner side of the limiting member is a vertical structure, which is configured to fit against the outer sides of the ceramic block.

[0011] Alternatively, the upper part of the limiting member has an outwardly expanding structure.

[0012] Furthermore, following any one or a combination of the aforementioned technical solutions, the first component is provided with a plurality of elastic elements, each corresponding to one of the ceramic blocks, and configured to press the ceramic blocks toward the PCB board.

[0013] Furthermore, following any one or a combination of the aforementioned technical solutions, the elastic element includes a pressure rod and a spring. The middle portion of the pressure rod passes through the first component and can slide up and down along the first component. Both ends of the pressure rod are provided with bosses. The spring is disposed between the lower bottom surface of the first component and the upper surface of the lower end boss of the pressure rod, and the spring is in a compressed state.

[0014] Furthermore, following any one or a combination of the aforementioned technical solutions, the limiting member extending to one end of the ceramic block is an annular thin-plate structure, the cross-sectional shape of which corresponds to the cross-sectional shape of the ceramic block, and the annular thin-plate structure is provided with a plurality of opening slots; and / or,

[0015] The limiting member is made of metal material, and its sidewall thickness ranges from 0.3 to 0.8 mm.

[0016] Furthermore, in accordance with any or a combination of the aforementioned technical solutions, the third component further includes a base, the limiting member is fixedly mounted on the base by screws, the base is provided with a plurality of first grooves, the first grooves are provided with a plurality of sets of threaded holes, the bottom of the limiting member is provided with a set of first through holes, and the first through holes are provided in a one-to-one correspondence with the set of threaded holes, the screw passes through the first through holes and is threadedly connected to the threaded holes.

[0017] Furthermore, in accordance with any or a combination of the aforementioned technical solutions, the third component further includes a base, the limiting member is disposed on the base, and the limiting member and the base are an integral part.

[0018] Furthermore, following any one or a combination of the aforementioned technical solutions, the second component is provided with a second groove, the second groove being configured to accommodate the PCB board, the shape and size of which correspond to the PCB board; and / or,

[0019] The first component and the second component are fixedly connected by a screw assembly. The first component has a second through hole, and the second component has a third through hole (23) corresponding to the second through hole; and / or,

[0020] The third component is connected to the first component and / or the second component via several guide posts.

[0021] According to another aspect of the present invention, a 5G ceramic filter welding method is provided, utilizing the 5G ceramic filter welding fixture described above, the welding method comprising:

[0022] The second component is assembled onto the third component, so that the limiting member passes through the second component;

[0023] The PCB board is assembled onto the second component, allowing the limiting member to pass through the PCB board;

[0024] The ceramic blocks are placed on the PCB board in a one-to-one correspondence with the limiting members, and the position of each ceramic block relative to the PCB board is limited by the limiting members. The ceramic blocks are pre-assembled with PIN pins according to process requirements.

[0025] The first component is placed on the ceramic block, and the first component and the second component are fixed together, such that the first component presses the ceramic block onto the PCB board;

[0026] Remove the third component from the second component;

[0027] The first component, the second component, the PCB board disposed between the first component and the second component, the ceramic block and the PIN pin are placed together in a soldering device for soldering.

[0028] After welding is completed, the first component and the second component are removed from the welded finished product.

[0029] According to another aspect of the present invention, a 5G ceramic filter welding method is provided, utilizing the 5G ceramic filter welding fixture described above, the welding method comprising:

[0030] The first component is assembled onto the third component, so that the limiting member passes through the first component;

[0031] The ceramic blocks are placed on the third component in a one-to-one correspondence with the limiting members. The position of the ceramic blocks on the limiting members is limited by the limiting members. The ceramic blocks are pre-assembled with PIN pins according to process requirements.

[0032] The PCB board is assembled onto the ceramic block, and the limiting member passes through the PCB board and defines the relative position of the PCB board and the ceramic block;

[0033] The second component is placed on the PCB board, and the first and second components are fixed together, such that the second component presses the PCB board onto the ceramic block.

[0034] Remove the third component from the first component;

[0035] The first component, the second component, the PCB board disposed between the first component and the second component, the ceramic block and the PIN pin are placed together in a soldering device for soldering.

[0036] After welding is completed, the first component and the second component are removed from the welded finished product.

[0037] The beneficial effects of the technical solution provided by this invention are as follows:

[0038] a. The welding fixture provided by the present invention limits the relative position of the ceramic block and the PCB board by setting the limiting component on the third component, which can ensure the relative shape and position accuracy between the ceramic block and the PCB board. Moreover, it can be removed from the product to be welded before the product enters the welding equipment for welding. This can solve the problem of the difference in shape and position of the product caused by the thermal expansion and contraction of the product and the fixture, which are different materials with different coefficients of thermal expansion, due to temperature changes during the product welding process. This effectively improves the accuracy and pass rate of product welding.

[0039] b. In the ceramic filter welding process, the number of PCB board panels can be increased by using the ceramic filter welding fixture provided by this invention, thereby reducing the procurement cost of PCB boards and improving production efficiency.

[0040] c. The ceramic filter welding fixture provided by the present invention does not require a limiting structure on the second component to limit the ceramic block, and a third component can be used in conjunction with multiple first and second components, which can reduce the cost of the fixture;

[0041] d. The limiting component used in this invention is made of metal material, and its wall thickness is between 0.3-0.8mm, which enables the limiting component to meet the positioning requirements of low-precision ceramic blocks and has a good service life. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 An exploded view of a ceramic filter welding fixture provided as an exemplary embodiment of the present invention;

[0044] Figure 2 A perspective view of a ceramic filter welding fixture provided as an exemplary embodiment of the present invention;

[0045] Figure 3 A top view schematic diagram of a ceramic filter welding fixture provided as an exemplary embodiment of the present invention;

[0046] Figure 4 for Figure 3 A cross-sectional view shown in the AA direction;

[0047] Figure 5 A perspective view of a base provided for an exemplary embodiment of the present invention;

[0048] Figure 6 A perspective view of a limiting member provided for an exemplary embodiment of the present invention;

[0049] Figure 7 A flowchart of a first ceramic filter welding method provided as an exemplary embodiment of the present invention;

[0050] Figure 8 A flowchart of a second ceramic filter welding method provided as an exemplary embodiment of the present invention.

[0051] The reference numerals in the attached drawings include: 1-first component, 11-pressure rod, 12-spring, 13-second through hole, 14-eighth through hole, 2-second component, 21-second groove, 22-fourth through hole, 23-third through hole, 24-fifth through hole, 3-third component, 31-limiting component, 311-first through hole, 312-opening groove, 32-base, 321-first groove, 322-threaded hole, 323-sixth through hole, 4-PCB board, 41-seventh through hole, 5-ceramic block, 6-PIN pin. Detailed Implementation

[0052] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0053] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, apparatus, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0054] In one embodiment of the present invention, a 5G ceramic filter welding fixture is provided, which is used for welding multiple ceramic blocks 5 on a PCB board 4 to be welded at one time. See [link to relevant documentation]. Figures 1 to 4The welding fixture includes a first component 1, a second component 2, and a third component 3. The first component 1 and the second component 2 are positioned opposite each other. The PCB board 4 and the ceramic block 5 to be welded are positioned between the first component 1 and the second component 2. The first component 1 and the second component 2 are configured such that the PCB board 4, the ceramic block 5, and the PIN pins are pressed together according to the product's process requirements. The third component 3 is configured to be detachably connected to either the first component 1 or the second component 2, and defines the relative positions of the PCB board 4 and the ceramic block 5, ensuring that their dimensional relationships meet process requirements. In one embodiment of the invention, the third component 3 is connected to the first component 1 and / or the second component 2 via several guide posts. See also... Figure 1 The base 32 is provided with a sixth through hole 323 for mounting the guide post, the second component is provided with a fifth through hole 24 for the guide post to pass through, or the first component 1 is provided with a through hole for the guide post to pass through.

[0055] In this embodiment, see Figure 1 , Figure 4 , Figure 5 and Figure 6 The third component 3 includes a limiting member 31 and a base 32. The limiting member 31 and the base 32 are separate structures, and the limiting member 31 is fixedly mounted on the base 32 by a screw assembly. The base 32 has several first grooves 321 for accommodating the limiting member 31, and each first groove 321 has several sets of threaded holes 322, such as... Figure 5 As shown, each set of threaded holes 322 has two holes; the bottom of the limiting member 31 is provided with a set of first through holes 311, as shown. Figure 6 As shown, each group of first through holes 311 also has two, and each first through hole 311 corresponds one-to-one with a group of threaded holes 322. The screw passes through the first through hole 311 and is threaded into the threaded hole 322. Of course, for large ceramic blocks, the number of threaded holes 322 and first through holes 311 in each group can be more than two.

[0056] The position of the limiting member 31 on the third component 3 should satisfy the condition that when the third component 3 is connected to the first component 1 or the second component 2, the position of the limiting member 31 corresponds one-to-one with the position of the ceramic block 5 disposed on the PCB board. The limiting member 31 is configured to limit the relative position of the PCB board 4 and the ceramic block 5. One end of the limiting member 31 passes through the PCB board 4 and extends to the side of the ceramic block 5. The side wall of the limiting member 31 is divided into upper and lower parts. The inner side of the lower part of the side wall is a vertical structure, which is configured to fit against the outer sides of the ceramic block 5. The limiting member 31 enables the dimensional and positional accuracy of the PCB board 4 and the ceramic block 5 to meet the process requirement of ±0.05mm. The upper part of the side wall has an outwardly expanding structure, which plays a guiding role, that is, it is conducive to the ceramic block 5 entering the limiting member 31. Correspondingly, the PCB board 4 is provided with a seventh through hole 41 through which the limiting member 31 passes, the second component 2 is provided with a fourth through hole 22 through which the limiting member 31 passes, and the first component 1 is provided with an eighth through hole 14 through which the limiting member 31 passes.

[0057] In this embodiment, see Figure 6 The limiting member 31 extends to one end of the ceramic block 5 and is an annular thin sheet structure, the cross-sectional shape of which corresponds to the cross-sectional shape of the ceramic block 5. The annular thin sheet structure has several opening slots 322. The limiting member 31 is made of metal material, and its sidewall thickness ranges from 0.3 to 0.8 mm. This design ensures that the limiting member 31 has a certain degree of elasticity, enabling it to position the low-precision ceramic block, while also guaranteeing its service life.

[0058] In this embodiment, see Figure 1 The second component 2 has a second groove 21, which is configured to accommodate the PCB board 4, and its shape and size correspond to the PCB board 4. After the PCB board 4 to be soldered, the ceramic block 5 and the PIN pins are placed between the first component 1 and the second component 2 according to the process requirements, the first component 1 and the second component 2 are fixedly connected by a screw assembly. The first component 1 has a second through hole 13 for installing the screw assembly, and the second component 2 has a third through hole 23 corresponding to the second through hole 13 for installing the screw assembly.

[0059] See Figure 1 and Figure 4The first component 1 is provided with a plurality of elastic elements, each corresponding to one of the ceramic blocks 5, and configured to press the ceramic blocks 5 toward the PCB board 4. In one embodiment of the present invention, the elastic element includes a pressure rod 11 and a spring 12. The middle portion of the pressure rod 11 passes through the first component 1 and can slide up and down along the first component 1. The two ends of the pressure rod 11 are provided with bosses. The spring 12 is disposed between the lower bottom surface of the first component 1 and the upper surface of the lower end boss of the pressure rod 11, and the spring 12 is in a compressed state. Of course, the embodiments disclosed herein are not limited to this, and the elastic element may also be implemented in other ways, which does not limit the protection scope of the present invention.

[0060] In filter welding processes, it's difficult for the components and tooling of the product to be welded to be made of the same material in practical applications, as different materials have different coefficients of thermal expansion. Welding operations involve high temperatures, and the varying thermal expansion and contraction of different materials during the "room temperature → high temperature → room temperature" process makes achieving high-precision welding positions difficult or results in a low welding pass rate. This invention provides a ceramic filter welding fixture. Before the product enters the welding equipment, component 3 is configured to limit the relative position of the PCB board and the ceramic block. After the PCB board and ceramic block to be welded are fixed by the first component 1 and the second component 2, component 3 is removed from the first component 1 or the second component 2. Then, the first component 1 or the second component 2, along with the product to be welded positioned between them, are placed in the welding equipment for welding. Compared to traditional fixtures, this welding fixture eliminates the need for a limiting structure on the second component 2 to limit the ceramic block, reducing fixture costs. Furthermore, during welding, there are no limiting structures around the ceramic block 5, and the distance between the top of the ceramic block 5 and the first component 1 is adjustable via the elastic element. Therefore, the welding fixture provided by this invention can solve the problem of product shape and size differences caused by thermal expansion and contraction of materials, thereby effectively improving the welding accuracy and pass rate of products. In addition, the ceramic filter welding fixture provided by this invention can increase the number of PCB panels, thereby reducing the procurement cost of PCB boards and improving production efficiency.

[0061] This invention does not solve the precision problem of the ceramic block 5, but considering the impact of the precision of the ceramic block 5 on the operability and work results of the welding fixture provided by this invention, two structures for the component 3 are provided. If the precision of the ceramic block 5 is not high, the limiting member 31 and the base 32 provided in the above embodiments are used as separate structures. If the precision of the ceramic block 5 is high, the limiting member 31 and the base 32 can be used as separate structures or as an integral structure, in addition to the separate structures provided in the above embodiments. Therefore, in another embodiment of this invention, unlike the separate structures of the limiting member 31 and the base 32 in the above embodiments, the limiting member 31 and the base 32 can be made into an integral part by CNC machining.

[0062] In one embodiment of the present invention, a 5G ceramic filter welding method is provided, which utilizes the 5G ceramic filter welding fixture described in the above embodiment for product welding. (See also...) Figure 7 The welding method includes:

[0063] The second component 2 is assembled onto the third component 3, so that the limiting member 31 passes through the second component 2;

[0064] The PCB board 4 is assembled onto the second component 2, so that the limiting member 31 passes through the PCB board 4;

[0065] The ceramic blocks 5 are placed on the PCB board 4 in a one-to-one correspondence with the limiting members 31, and the position of each ceramic block 5 relative to the PCB board 4 is limited by the limiting members 31. The ceramic blocks 5 are pre-assembled with PIN pins 6 according to process requirements.

[0066] The first component 1 is placed on the ceramic block 5, and the first component 1 and the second component 2 are fixed, such that the first component 1 presses the ceramic block 5 onto the PCB board 4.

[0067] Remove the third component 3 from the second component 2;

[0068] The first component 1, the second component 2, the PCB board 4 disposed between the first component 1 and the second component 2, the ceramic block 5 and the PIN pin 6 are placed together into a welding equipment for welding.

[0069] After welding is completed, the first component 1 and the second component 2 are removed from the welded finished product.

[0070] It should be noted that the 5G ceramic filter welding fixture provided by this invention can be assembled in other ways in practical applications. In another embodiment of this invention, a 5G ceramic filter welding method is provided, utilizing the 5G ceramic filter welding fixture described in the above embodiment for product welding. See [link to relevant documentation]. Figure 8 The welding method includes:

[0071] The first component 1 is assembled onto the third component 3, so that the limiting member 31 passes through the first component 1;

[0072] The ceramic block 5 is placed on the third component 3 in a one-to-one correspondence with the limiting member 31. The position of the ceramic block 5 on the limiting member 31 is limited by the limiting member 31. The ceramic block 5 is pre-assembled with PIN pins 6 according to process requirements.

[0073] The PCB board 4 is assembled onto the ceramic block 5, and the limiting member 31 passes through the PCB board 4 and limits the relative position of the PCB board 4 and the ceramic block 5;

[0074] The second component 2 is placed on the PCB board 4, and the first component 1 and the second component 2 are fixed, so that the second component 2 presses the PCB board 4 onto the ceramic block 5;

[0075] Remove the third component 3 from the first component 2;

[0076] The first component 1, the second component 2, the PCB board 4 disposed between the first component 1 and the second component 2, the ceramic block 5 and the PIN pin 6 are placed together into a welding equipment for welding.

[0077] After welding is completed, the first component 1 and the second component 2 are removed from the welded finished product.

[0078] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0079] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for welding 5G ceramic filters, characterized in that, A 5G ceramic filter welding fixture is used, including a first component (1), a second component (2) and a third component (3), wherein the first component (1) and the second component (2) are arranged opposite to each other, and the PCB board (4) to be welded and the ceramic block (5) are arranged between the first component (1) and the second component (2). The first component (1) and the second component (2) are configured to press the PCB board (4) and the ceramic block (5) together. The third component (3) is detachably connected to the first component (1) or the second component (2). It is configured to position the PCB board (4) and the ceramic block (5) before the product is soldered. The third component (3) is provided with a plurality of limiting members (31) that correspond one-to-one with the ceramic block (5). One end of the limiting member (31) passes through the PCB board (4) and extends to the side of the ceramic block (5). It is configured to limit the relative position of the PCB board (4) and the ceramic block (5). The position of the limiting member (31) on the third component (3) satisfies that when the third component (3) is connected to the first component (1) or the second component (2), the position of the limiting member (31) corresponds one-to-one with the position of the ceramic block (5) on the PCB board; the lower part of the inner side of the limiting member (31) is a vertical structure, which is configured to fit against the outer side of the ceramic block (5); the end of the limiting member (31) extending to the ceramic block (5) is an annular thin sheet structure, the cross-sectional shape of which corresponds to the cross-sectional shape of the ceramic block (5), and the annular thin sheet structure is provided with a plurality of opening slots (312); The first component (1) is provided with a plurality of elastic elements, which are provided one-to-one with the ceramic block (5) and are configured to press the ceramic block (5) toward the PCB board (4); The third component (3) is also configured to be removed from the product to be welded after the PCB board (4) and the ceramic block (5) have been positioned and before the product to be welded enters the welding equipment; The welding method includes: The second component (2) is assembled onto the third component (3) so that the limiting member (31) passes through the second component (2); The PCB board (4) is assembled onto the second component (2) so that the limiting member (31) passes through the PCB board (4); The ceramic blocks (5) are placed on the PCB board (4) in a one-to-one correspondence with the limiting members (31), and the position of each ceramic block (5) relative to the PCB board (4) is limited by the limiting members (31). The ceramic blocks (5) are pre-assembled with PIN pins (6) according to process requirements. The first component (1) is placed on the ceramic block (5), and the first component (1) and the second component (2) are fixed so that the first component (1) presses the ceramic block (5) onto the PCB board (4); Remove the third component (3) from the second component (2); The first component (1), the second component (2), the PCB board (4) disposed between the first component (1) and the second component (2), the ceramic block (5) and the PIN pin (6) are placed together in a welding device for welding; After welding is completed, the first component (1) and the second component (2) are removed from the welded product.

2. The 5G ceramic filter welding method according to claim 1, characterized in that, The upper part of the limiting member (31) has an outwardly expanding structure.

3. The 5G ceramic filter welding method according to claim 1, characterized in that, The elastic element includes a pressure rod (11) and a spring (12). The middle part of the pressure rod (11) passes through the first component (1) and can slide up and down along the first component (1). The two ends of the pressure rod (11) are provided with bosses. The spring (12) is disposed between the bottom surface of the first component (1) and the upper surface of the lower end boss of the pressure rod (11), and the spring (12) is in a compressed state.

4. The 5G ceramic filter welding method according to claim 1, characterized in that, The limiting member (31) is made of metal material and its sidewall thickness ranges from 0.3 to 0.8 mm.

5. The 5G ceramic filter welding method according to claim 1, characterized in that, The third component (3) also includes a base (32). The limiting member (31) is fixedly mounted on the base (32) by screws. The base (32) is provided with a plurality of first grooves (321). The first grooves (321) are provided with a plurality of threaded holes (322). The bottom of the limiting member (31) is provided with a set of first through holes (311). The first through holes (311) and the set of threaded holes (322) are provided in a one-to-one correspondence. The screw passes through the first through hole (311) and is threadedly connected to the threaded hole (322).

6. The 5G ceramic filter welding method according to claim 1, characterized in that, The third component (3) also includes a base (32), the limiting member (31) is disposed on the base (32), and the limiting member (31) and the base (32) are an integral part.

7. The 5G ceramic filter welding method according to claim 1, characterized in that, The second component (2) is provided with a second groove (21), the second groove (21) being configured to receive the PCB board (4), the shape and size of which correspond to the PCB board (4); and / or, The first component (1) and the second component (2) are fixedly connected by a screw assembly. The first component (1) is provided with a second through hole (13), and the second component (2) is provided with a third through hole (23) corresponding to the second through hole (13); and / or, The third component (3) is connected to the first component (1) and / or the second component (2) via a number of guide posts.

8. A method for welding 5G ceramic filters, characterized in that, A 5G ceramic filter welding fixture is used, the 5G ceramic filter welding fixture includes a first component (1), a second component (2) and a third component (3), wherein the first component (1) and the second component (2) are arranged opposite to each other, the PCB board (4) to be welded and the ceramic block (5) are arranged between the first component (1) and the second component (2), and the first component (1) and the second component (2) are configured to press the PCB board (4) and the ceramic block (5) together; The third component (3) is detachably connected to the first component (1) or the second component (2). It is configured to position the PCB board (4) and the ceramic block (5) before the product is soldered. The third component (3) is provided with a plurality of limiting members (31) that correspond one-to-one with the ceramic block (5). One end of the limiting member (31) passes through the PCB board (4) and extends to the side of the ceramic block (5). It is configured to limit the relative position of the PCB board (4) and the ceramic block (5). The position of the limiting member (31) on the third component (3) satisfies that when the third component (3) is connected to the first component (1) or the second component (2), the position of the limiting member (31) corresponds one-to-one with the position of the ceramic block (5) on the PCB board; the lower part of the inner side of the limiting member (31) is a vertical structure, which is configured to fit against the outer side of the ceramic block (5); the end of the limiting member (31) extending to the ceramic block (5) is an annular thin sheet structure, the cross-sectional shape of which corresponds to the cross-sectional shape of the ceramic block (5), and the annular thin sheet structure is provided with a plurality of opening slots (312); The first component (1) is provided with a plurality of elastic elements, which are provided one-to-one with the ceramic block (5) and are configured to press the ceramic block (5) toward the PCB board (4); The third component (3) is also configured to be removed from the product to be welded after the PCB board (4) and the ceramic block (5) have been positioned and before the product to be welded enters the welding equipment; The welding method includes: The first component (1) is assembled onto the third component (3) so that the limiting member (31) passes through the first component (1); The ceramic block (5) is placed on the third component (3) in a one-to-one correspondence with the limiting member (31). The position of the ceramic block (5) on the limiting member (31) is limited by the limiting member (31). The ceramic block (5) is pre-assembled with PIN pins (6) according to process requirements. The PCB board (4) is assembled onto the ceramic block (5), and the limiting member (31) passes through the PCB board (4) and limits the relative position of the PCB board (4) and the ceramic block (5); The second component (2) is placed on the PCB board (4), and the first component (1) and the second component (2) are fixed, so that the second component (2) presses the PCB board (4) onto the ceramic block (5); Remove the third component (3) from the first component (1); The first component (1), the second component (2), the PCB board (4) disposed between the first component (1) and the second component (2), the ceramic block (5) and the PIN pin (6) are placed together in a welding device for welding; After welding is completed, the first component (1) and the second component (2) are removed from the welded product.

Images