Welding jig

Abstract

The utility model discloses a welding jig, the welding jig is used for supporting a board body of a PCBA and a first type of components on the PCBA, and the welding jig at least comprises a jig body, an extension part and an elastic supporting assembly. Wherein the jig body is provided with a through hole penetrating through the top surface and the bottom surface of the jig body; an extension part connected with the jig body comprises a first extension part with a first supporting part, and the first supporting part is located below the through hole and is spaced from the first type of component; the elastic supporting assembly is connected with the first supporting part and located under the first type of component, and the elastic supporting assembly makes contact with the bottom face of the first type of component under the action of the elastic force of the elastic supporting assembly so as to support the first type of component. According to the technical scheme provided by the invention, the possibility of device displacement in the secondary reflow soldering process of the PCBA can be reduced, and the soldering quality is improved.

Description

Technical Field

[0001] This application relates to the field of patch devices, and more particularly to a welding fixture. Background Technology

[0002] Double-sided soldering of PCBA refers to the process of assembling and soldering components on both sides of a PCB (printed circuit board).

[0003] However, in the actual soldering process, large-volume components are prone to falling off during the second reflow due to the high temperature of the solder joints remelting and the influence of gravity, resulting in soldering defects such as missing components in the product. Utility Model Content

[0004] The purpose of this application is to provide a welding fixture that can reduce the possibility of component displacement during the secondary reflow soldering process of PCBA and improve welding quality.

[0005] To achieve the above objectives, this application provides a welding fixture for supporting a PCBA board and a first type of component on the PCBA. The welding fixture includes at least a fixture body, an extension member, and an elastic support assembly. The fixture body has a through hole penetrating its top and bottom surfaces. The extension member connected to the fixture body includes a first extension portion having a first support portion located below the through hole and spaced apart from the first type of component. The elastic support assembly is connected to the first support portion and located directly below the first type of component. The elastic support assembly contacts the bottom surface of the first type of component under its own elastic force to support the first type of component.

[0006] The technical solution provided in this application extends the elastic support component directly beneath the first type of component via a first extension portion to support the component, preventing displacement or falling during the secondary reflow soldering process and ensuring product quality. Simultaneously, the elastic support component contacts the bottom surface of the first type of component under its own elastic force; that is, the elastic support component ensures constant contact with the electronic component through elastic deformation, thereby avoiding the risk of inadequate support.

[0007] In addition, the first support portion used to connect the elastic support assembly is spaced apart from the first type of component, that is, the elastic support assembly and the first type of component are in suspended contact, which reduces the heat transferred from the first type of component and the board to the first extension portion and the elastic support assembly, avoids excessive heat energy consumption on the first type of component or the board, thereby ensuring the welding effect and avoiding cold welding defects.

[0008] Optionally, the elastic support assembly includes a support member and an elastic member, wherein the support member is slidably connected to the first support portion; the elastic member is connected to the support member, and the elastic member is used to provide the support member with a force that allows it to slide toward the first type of component and contact the bottom surface of the first type of component.

[0009] The above solution utilizes an elastic element to drive the support to slide and contact the first type of component, thereby achieving soft support and reducing the possibility of support damage.

[0010] Optionally, the support member has a sliding portion and an abutting portion, wherein the sliding portion is slidably connected to the first support member; the abutting portion is located at one end of the sliding portion adjacent to the fixture body, and the abutting portion at least partially protrudes from the outer peripheral surface of the sliding portion; the elastic member is sleeved on the sliding portion and located between the first support member and the abutting portion.

[0011] The above solution utilizes a sliding part to limit the elastic element, reducing displacement caused by repeated expansion and contraction, and ensuring the service life of the elastic element.

[0012] Optionally, the elastic support assembly further includes a limiting plug; the first support portion is provided with a guide hole, one end of the sliding portion away from the abutting portion passes through the guide hole, the sliding portion is provided with a slot extending in the circumferential direction, the limiting plug is inserted into the slot, and the limiting plug and the abutting portion are respectively located at opposite ends of the first support portion.

[0013] With the above design, the limiting plug and the abutment portion are located at opposite ends of the first support portion. Thus, the support member can be prevented from detaching from the first support portion by utilizing the abutment portions and limiting plugs located at its two ends.

[0014] Optionally, the elastic support assembly includes an elastic element, one end of which is connected to the first support portion, and the other end of which is in contact with the bottom surface of the first type of component.

[0015] The above solution simplifies the structure of the elastic support assembly and reduces costs by using only the elastic element to contact and support the first type of components.

[0016] Optionally, the extension component further includes a second extension connected to the fixture body, the top surface of which is used to contact and support the plate.

[0017] The above solution utilizes the top surface of the second extension to contact and support the PCBA board, thereby reducing board deformation during high-temperature reflow and improving PCBA soldering quality.

[0018] Optionally, the top surface of the second extension is provided with at least one clearance hole, which is used to accommodate a second type of component on the PCBA, and the inner wall surface of the clearance hole does not contact the second type of component.

[0019] The above solution can minimize the contact area between the second extension and the PCBA, increase the temperature rise rate of the PCBA during reflow soldering, and thus ensure the soldering effect.

[0020] Optionally, the first extension further includes a second support portion; the first end of the first support portion is connected to the fixture body or the second extension portion through the second support portion, and the second end of the first support portion is suspended.

[0021] With the above solution, the second support can extend away from the fixture body, so that the first support and the first type of components are spaced apart, thereby enabling the elastic support component connected to the first support and the first type of components to achieve suspended support.

[0022] Optionally, the first extension further includes a second support and a third support, which are respectively connected to both ends of the first support; the second support is connected to the fixture body, and the third support is connected to the second extension; or, both the second support and the third support are connected to the fixture body.

[0023] With the above solution, the second and third support parts can be extended away from the fixture body, so that the first support part and the first type of component are spaced apart, thereby enabling the elastic support component connected to the first support part and the first type of component to achieve suspended support.

[0024] Optionally, the width of the first extension and / or the second extension is 4mm-5mm.

[0025] The above solution can be used to increase the strength of the first extension and the second extension by appropriately increasing their width, thereby ensuring the reliability of the support of the first extension and the second extension.

[0026] To achieve the above objectives, this application also provides a reflow soldering production line, including a reflow soldering machine and the aforementioned welding fixture.

[0027] By applying the above-mentioned welding fixture to the reflow soldering production line, the possibility of component displacement during the secondary reflow soldering process of PCBA can be reduced, thereby improving the welding quality. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a top view schematic diagram of a soldering fixture carrying a PCBA in one embodiment provided in this application;

[0030] Figure 2 This is a half-sectional schematic diagram of the fixture body in one embodiment provided in this application;

[0031] Figure 3 This is a bottom view of a welding fixture in one embodiment provided in this application;

[0032] Figure 4 yes Figure 3 AA sectional view;

[0033] Figure 5 This is a half-sectional schematic diagram of the welding fixture located at the elastic support component in one embodiment provided in this application;

[0034] Figure 6 This is a half-sectional view of the welding fixture located at the elastic support component in another embodiment provided in this application;

[0035] Figure 7 This is a structural schematic diagram of the support member in one embodiment provided in this application;

[0036] Figure 8 yes Figure 3 BB cross-sectional diagram.

[0037] Explanation of reference numerals in the attached figures:

[0038] 10. PCBA; 11. Category I Components;

[0039] 100. Fixture body; 110. Through hole; 120. Step groove; 130. Plate extraction groove;

[0040] 200. Extension component; 210. First extension; 211. First support; 2111. Guide hole; 212. Second support; 213. Third support; 220. Second extension; 221. Relief hole;

[0041] 300, Elastic support component; 310, Support component; 311, Sliding part; 3111, Slot; 312, Abutting part; 320, Elastic component; 330, Limiting plug. Detailed Implementation

[0042] As electronic products become smaller and more integrated, PCBA (Printed Circuit Board Assembly, or what can be understood as a printed circuit board with assembled electronic components) layouts tend to use double-sided soldering. This not only improves the space utilization of the circuit board but also meets the needs of the end product. However, during secondary reflow soldering, especially for large components, this layout poses a risk of components falling off or shifting due to high temperatures and gravity, directly affecting the soldering quality and reliability of the product.

[0043] To address the issue of large components falling off during secondary reflow, this application attempted two methods: First, applying high-temperature resistant adhesive next to the large component for fixation. While this prevents the component from falling off, it may contaminate the board surface, affecting the appearance, and increases the demand for auxiliary materials and manual adhesive application costs. The second method is to fabricate a carrier to shield the large component for heat insulation, preventing excessively high solder melting points. However, the heat insulation effect of the shielding area may affect the soldering temperature of the components on the bottom surface, leading to cold solder defects.

[0044] To more effectively address the issue of component dropout during secondary reflow soldering, this application incorporates support ribs extending below the corresponding electronic components on the bottom surface of the reflow fixture. Elastic support components are mounted on these ribs, utilizing their elastic deformation capability to ensure continuous contact with the electronic components and avoid the risk of inadequate support. Furthermore, the small, suspended contact between the elastic support components and the electronic components minimizes heat loss from the components or the PCB, ensuring optimal soldering results.

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0046] Please see also Figures 1 to 4This application provides a welding fixture that can be used to support the PCBA 10 board (or PCB) and the first type of components 11 on the PCBA 10. The welding fixture may include a fixture body 100, which has through holes 110 penetrating its top and bottom surfaces. When the PCBA is placed in the fixture body 100 and conveyed to a reflow soldering machine for welding, the temperature released by the heating device located below the welding fixture in the reflow soldering machine can be applied to the PCBA 10 through the through holes 110, thereby efficiently transferring heat to the PCBA 10 and ensuring welding results. Simultaneously, the through holes 110 provide space for electronic components located on the first surface of the PCBA during secondary reflow soldering, preventing interference between the fixture body 100 and the electronic components.

[0047] The welding fixture may further include an extension component 200 and an elastic support assembly 300. The extension component 200 is connected to the fixture body 100 and may include a first extension portion 210. The first extension portion 210 has a first support portion 211, which is located below the through hole 110 and spaced apart from the first type of component 11. The elastic support assembly 300 is connected to the first support portion 211 and is located directly below the first type of component 11. Under its own elastic force, the elastic support assembly 300 contacts the bottom surface of the first type of component 11, thereby supporting the first type of component 11.

[0048] It is worth mentioning that the elastic support component 300 extends directly below the first type of component 11 via the first extension 210 to support the first type of component 11, preventing displacement or falling during the secondary reflow soldering process and ensuring product quality. Simultaneously, the elastic support component 300 contacts the bottom surface of the first type of component 11 under its own elastic force; that is, the elastic support component 300 ensures constant contact with the electronic component through elastic deformation, thereby avoiding the risk of inadequate support.

[0049] In addition, the first support portion 211 for connecting the elastic support assembly 300 is spaced apart from the first type of component 11, that is, the elastic support assembly 300 and the first type of component 11 are in suspended contact, which reduces the heat transferred from the first type of component 11 and the PCBA board to the first extension portion 210 and the elastic support assembly 300, avoids excessive heat energy consumption on the first type of component 11 or the PCBA board, thereby ensuring the welding effect and avoiding cold welding defects.

[0050] It should be noted that the "first type of component 11" as defined in this application refers to large or heavy electronic components soldered onto the PCBA board that are prone to falling off or shifting during secondary reflow soldering. The vertical direction defined in this application is based on the typical working scenario of the soldering fixture; for details, please refer to [link to relevant documentation]. Figure 2 The vertical direction is shown. Correspondingly, in the welding fixture, the upper surface of each component is the top surface of each component, and the lower surface of each component is the bottom surface of each component.

[0051] The welding fixture described in this application can be used only in the secondary reflow soldering process; that is, the welding fixture used in the primary reflow soldering is different from the welding fixture described in this application. Of course, without affecting the primary reflow soldering, the welding fixture described in this application can also be used in both the primary and secondary reflow soldering processes. For example, several electronic components are mounted on the first side of the board and enter the reflow soldering machine through this welding fixture for primary reflow soldering, thereby soldering and fixing the electronic components to the first side of the board. In this case, the board with the assembled electronic components can be referred to as a PCBA. Next, after mounting electronic components on the second side of the PCBA, it is placed back into the welding fixture with the second side facing upwards for secondary reflow soldering. However, it should be noted that the elastic support component 300 only supports the first type of components 11 during the secondary reflow soldering process.

[0052] In practical applications, a single first-type component 11 can be supported by one elastic support assembly 300. Of course, depending on the size of the first-type component 11, two or more elastic support assemblies 300 can be selected for joint support (e.g., ...). Figure 5 (As shown). Alternatively, two first-type components 11 can be supported simultaneously by a single elastic support component 300, but this application does not make any specific limitations here.

[0053] Regarding the specific structure of the elastic support component 300, this application provides two feasible embodiments for reference.

[0054] Example 1, such as Figures 4 to 7 The elastic support assembly 300 may include a support member 310 and an elastic member 320. The support member 310 is slidably connected to the first support portion 211, and the sliding direction of the support member 310 intersects the plane on which the fixture body 100 is located. The elastic member 320 is connected to the support member 310, and the elastic member 320 is used to provide a force for the support member 310 to slide toward the first type of component 11 and to contact the bottom surface of the first type of component 11.

[0055] The elastic element 320 can be made of a weakly elastic component to avoid damage to the first type of component 11 due to excessive elasticity. The support element 310 has a contact area with the first type of component 11. This contact area should be minimized as much as possible while ensuring the stability of the support for the component 11, so as to avoid excessive heat transfer from the PCBA to the support element 310, which would affect the soldering effect.

[0056] In an optional embodiment, the support member 310 may have a sliding portion 311 and an abutting portion 312, wherein the sliding portion 311 is slidably connected to the first support portion 211, the abutting portion 312 is located at one end of the sliding portion 311 adjacent to the fixture body 100, and the abutting portion 312 at least partially protrudes from the outer peripheral surface of the sliding portion 311, and the elastic member 320 is sleeved on the sliding portion 311 and located between the first support portion 211 and the abutting portion 312.

[0057] To prevent the support member 310 from detaching from the first support portion 211, the elastic support assembly 300 may further include a limiting insert 330. Accordingly, the first support portion 211 has a guide hole 2111, and the end of the sliding portion 311 away from the abutment portion 312 passes through the guide hole 2111. The sliding portion 311 has a slot 3111 extending circumferentially, and the limiting insert 330 is inserted into the slot 3111. The limiting insert 330 and the abutment portion 312 are located at opposite ends of the first support portion 211, respectively. Thus, the support member 310 can be prevented from detaching from the first support portion 211 by utilizing the abutment portions 312 and the limiting insert 330 located at its two ends. The guide hole 2111 may be a through hole or a countersunk hole. When the guide hole 2111 is a countersunk hole, the countersunk portion of the countersunk hole is positioned adjacent to the abutment portion 312. This allows one end of the elastic member 320 to be accommodated within the countersunk portion of the countersunk hole, preventing the elastic member 320 from shifting and being damaged during repeated compression deformation.

[0058] In practical applications, the support member 310 can be an existing T-shaped spring post, and correspondingly, the sliding part 311 is the column part of the T-shaped spring post, and the abutting part 312 is the large head of the T-shaped spring post. The limiting plug 330 is an existing open retaining ring or snap ring.

[0059] In another alternative embodiment, the elastic member 320 may also be located between the first support portion 211 and the abutment portion 312, but not sleeved on the sliding portion 311, and can still push the support member 310 to contact and support the first type of component 11.

[0060] In another alternative embodiment, one end of the elastic member 320 is connected to the first support portion 211, and the other end of the elastic member 320 is connected to the support member 310, which can also push the support member 310 to contact and support the first type of component 11.

[0061] The aforementioned elastic element 320 can be a spring, a rubber sleeve, or other components with elastic properties.

[0062] In embodiment 2, the elastic support assembly 300 may consist only of the elastic element 320, thereby directly supporting the first type of component 11 through the elastic element 320. Specifically, one end of the elastic element 320 is connected to the first support portion 211, and the other end of the elastic element 320 contacts the bottom surface of the first type of component 11.

[0063] like Figure 3 As shown, in one feasible embodiment, the extension member 200 may further include a second extension 220, which may be located within the through hole 110 and connected to the fixture body 100. The top surface of the second extension 220 is used to contact the PCBA board and support the board, thereby reducing the deformation of the board during high-temperature reflow.

[0064] In practical applications, the second extension 220 can be formed during the milling process on the fixture body 100, and the bottom surface of the second extension 220 is flush with the bottom surface of the fixture body 100. Of course, the second extension 220 can also be formed separately and then connected to the fixture body 100 by welding or threaded connection.

[0065] To ensure the strength of the first extension 210 and the second extension 220, the width of the first extension 210 and the second extension 220 is not less than 2mm, preferably between 4mm and 5mm, and the thickness of the first extension 210 and the second extension 220 can be 3mm or 4mm, with an accuracy of ±0.2mm. Furthermore, when the PCBA is placed on the soldering fixture, the projection of the extension component 200 in the vertical direction does not coincide with the projection of the third type of component on the PCBA. That is, the extension component 200 should avoid contact with the third type of component as much as possible to prevent any impact on the soldering temperature. The third type of component refers to a component with a body volume greater than 1cm³. 3 Examples include transformers, electrolytic capacitors, inductors, and metal-cased interface electronic components.

[0066] Furthermore, such as Figure 8 As shown, the top surface of the second extension 220 may be provided with at least one clearance hole 221. The clearance hole 221 is used to accommodate second-type components on the PCBA, and the inner wall surface of the clearance hole 221 does not contact the second-type components. Here, the second-type components refer to one or more other electronic components of the PCBA that do not belong to the aforementioned third-type components or first-type components. In this way, the contact area between the second extension 220 and the PCBA can be minimized, increasing the temperature rise rate of the PCBA during reflow soldering, thereby ensuring the soldering effect.

[0067] Furthermore, in the projection of the welding fixture along the vertical direction onto a plane perpendicular to the vertical direction, the area of ​​each hollow region formed by the extension member 200 and the area of ​​each hollow region formed by the extension member 200 and the fixture body 100 are both [2000mm²]. 2 5000mm 2 Therefore, while ensuring the strength of the extension component 200, the area of ​​the extension component 200 should be made as small as possible to reduce the impact of the extension component 200 on the temperature of the PCBA during the reflow soldering process and ensure the soldering quality.

[0068] Regarding the specific structure of the first extension 210, this application provides two feasible embodiments for reference.

[0069] Example 1, such as Figure 6 As shown, the first extension 210 includes a first support 211 and a second support 212. The first end of the first extension 210 is connected to the fixture body 100 via the second support 212, and the second end of the first extension 210 is suspended. Alternatively, the first end of the first support 211 is connected to the second extension 220 via the second support 212, and the second end of the first support 211 is suspended. In this way, the second support 212 can extend away from the fixture body 100, allowing the first support 211 and the first type of component 11 to be spaced apart, thereby enabling the elastic support assembly 300 connected to the first support 211 to provide suspended support for the first type of component 11.

[0070] In practical applications, the first support part 211 and the second support part 212 can be designed as a single unit. Alternatively, the first support part 211 and the second support part 212 can be designed as separate parts and then connected to each other. The second support part 212 and the fixture body 100 can be connected to each other by welding, bonding, or threaded connection.

[0071] Example 2, as follows Figure 4 As shown, the first extension 210 includes a first support 211, a second support 212, and a third support 213. The second support 212 is connected to the fixture body 100, and the third support 213 is connected to the second extension 220. Alternatively, both the second support 212 and the third support 213 are connected to the fixture body 100. In this way, the second support 212 and the third support 213 can extend away from the fixture body 100, so that the first support 211 and the first type of component 11 are spaced apart, thereby enabling the elastic support assembly 300 connected to the first support 211 to achieve suspended support for the first type of component 11.

[0072] In practical applications, the first support portion 211, the second support portion 212, and the third support portion 213 can be designed as a single unit. Alternatively, they can be designed as separate units and then connected to each other. The second support portion 212 can be connected to the fixture body 100 via welding, bonding, or threaded connections. The third support portion 213 can be connected to the fixture body 100 or the second extension portion 220 via welding, bonding, or threaded connections.

[0073] For details regarding the structure of the jig body 100, please refer again. Figure 1 and Figure 2 As shown, in an optional embodiment, the top surface of the fixture body 100 may be provided with a stepped groove 120. The stepped groove 120 extends from the top surface of the fixture body 100 towards the bottom surface, surrounds the through hole 110 and communicates with the through hole 110. The shape and size of the inner wall surface of the stepped groove 120 are adapted to the shape and size of the PCBA 10, so that the board body of the PCBA 10 can be placed in the stepped groove 120, and the periphery of the PCBA 10 can be placed on the bottom of the stepped groove 120. The horizontal length and width of the stepped groove 120 are both 0.5 mm larger than the board body size of the PCBA 10, and the depth of the stepped groove 120 is 0.2 mm larger than the board body thickness of the PCBA 10, with errors within +0 / -0.1 mm.

[0074] The jig body 100 has outwardly extending guide rails on its periphery. These guide rails can be located on opposite sides of the jig body 100, or they can be arranged in a ring around the periphery of the jig body 100. The thickness of the guide rails can be between 2mm and 4mm, the width is 5.5mm, and the accuracy is ±0.2mm. When the guide rails are ring-shaped, the four corners can be chamfered to R4 or R5. In practical applications, the guide rails can be machined by milling the bottom surface of the jig body 100, or they can be designed as separate parts and then connected together.

[0075] The top surface of the fixture body 100 may be provided with at least one board retrieval slot 130. When there are two board retrieval slots 130, the board retrieval slots 130 are connected to the fixture body 100. The board retrieval slots 130 can be placed centrally or diagonally, so as to facilitate the user to retrieve the PCBA10 located in the stepped groove 120 through the board retrieval slots 130. The dimensions of the board retrieval slot 130 may be: length 40mm, width 20mm, and depth ≥2mm.

[0076] Based on the same inventive concept, this application also provides a reflow soldering production line, which includes a reflow soldering machine and the aforementioned soldering fixture. The soldering fixture can be placed on a reflow soldering conveyor line, which transports the soldering fixture carrying the PCBA to the reflow soldering machine for soldering and then transports the soldered product out.

[0077] It should be noted that the specific structure of the welding fixture can be found in the detailed description in the above embodiments, and will not be repeated here.

[0078] The terms "upper" and "lower" are used to describe the relative positions of the various structures in the accompanying drawings. They are only for clarity of description and are not intended to limit the scope of implementation of this application. Any changes or adjustments to the relative positions without substantially altering the technical content shall also be considered within the scope of implementation of this application.

[0079] It should be noted that, in this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0080] Furthermore, in this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A welding fixture for supporting a board body of a PCBA (10) and a first type of component (11) on the PCBA (10), characterized in that, The welding jig at least comprises: a jig body (100) having a through hole (110) penetrating through the top surface and the bottom surface of the jig body (100); an extension component (200) connected with the jig body (100), comprising a first extension part (210) having a first support part (211) located below the through hole (110) and arranged in a spaced manner with the first type of component (11); a resilient support assembly (300) connected with the first support part (211) and located directly below the first type of component (11), the resilient support assembly (300) being in contact with the bottom surface of the first type of component (11) under the action of its own elastic force to support the first type of component (11).

2. The soldering fixture of claim 1, wherein, The resilient support assembly (300) comprises a support member (310) and a resilient member (320), wherein the support member (310) is in sliding connection with the first support part (211); the resilient member (320) is connected with the support member (310), and the resilient member (320) is configured to provide an acting force for the support member (310) to slide towards the first type of component (11) and be in contact with the bottom surface of the first type of component (11).

3. The soldering fixture of claim 2, wherein, The support member (310) has a sliding part (311) and an abutting part (312), wherein the sliding part (311) is in sliding connection with the first support part (211); the abutting part (312) is located at one end of the sliding part (311) adjacent to the jig body (100), and the abutting part (312) at least partially protrudes from the outer peripheral surface of the sliding part (311), the resilient member (320) is sleeved on the sliding part (311) and located between the first support part (211) and the abutting part (312).

4. The soldering fixture of claim 3, wherein, The resilient support assembly (300) further comprises a limiting insert (330); the first support part (211) is provided with a guide hole (2111), one end of the sliding part (311) away from the abutting part (312) penetrates through the guide hole (2111), the sliding part (311) is provided with an insertion slot (3111) extending in the circumferential direction, the limiting insert (330) is inserted into the insertion slot (3111), and the limiting insert (330) and the abutting part (312) are located at opposite ends of the first support part (211), respectively.

5. The soldering fixture of claim 1, wherein, The resilient support assembly (300) comprises a resilient member (320), one end of the resilient member (320) is connected with the first support part (211), and the other end of the resilient member (320) is in contact with the bottom surface of the first type of component (11).

6. The soldering fixture according to any one of claims 1 to 5, wherein The extension component (200) further comprises a second extension part (220) connected with the jig body (100), and the top surface of the second extension part (220) is configured to contact and support the plate body.

7. The soldering fixture of claim 6, wherein, The top surface of the second extending part (220) is provided with at least one accommodation hole (221) for accommodating the second type of components on the PCBA (10), and the inner wall surface of the accommodation hole (221) is not in contact with the second type of components.

8. The soldering fixture of claim 6, wherein, The first extending part (210) further comprises a second supporting part (212); The first end of the first supporting part (211) is connected with the jig body (100) or the second extending part (220) through the second supporting part (212), and the second end of the first supporting part (211) is suspended.

9. The soldering fixture of claim 6, wherein, The first extending part (210) further comprises a second supporting part (212) and a third supporting part (213) connected with the two ends of the first supporting part (211) respectively; The second supporting part (212) is connected with the jig body (100), and the third supporting part (213) is connected with the second extending part (220); or, The second supporting part (212) and the third supporting part (213) are both connected with the jig body (100).

10. The soldering fixture of claim 6, wherein, The width of the first extending part (210) and / or the second extending part (220) is 4mm-5mm.

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