Soaking jig for PCBA

Abstract

The utility model discloses a soaking jig for a PCBA, and the jig comprises a jig main body which is provided with a soaking pool for soaking a coated PCBA; the clamping assembly is erected above the soaking pool and is provided with a PCBA mounting part used for mounting a PCBA, and the PCBA is hung in the soaking pool through the clamping assembly; an assembly mounting groove is formed in the jig main body, and the clamping assembly is erected on the jig main body through the assembly mounting groove. The soaking pool is arranged to be matched with the clamping assembly, the PCBA is hung in the soaking pool to be subjected to conformal coating, conformal coating quality stability can be guaranteed by adopting the jig to conduct conformal coating on the PCBA, the conformal coating effect of PCBA products in the same batch is equivalent, a complex mechanical structure does not need to be adopted, and the equipment cost is low.

Description

Technical Field

[0001] The present application relates to the technical field of PCBA processing, and in particular to an immersion fixture for PCBA. Background Art

[0002] PCBA coating with conformal coating refers to coating a layer of coating with moisture-proof, salt spray-proof, mildew-proof and other functions on the surface of PCBA. Conformal coating is usually composed of resin, solvent, filler and the like. Resin provides strength and durability of the coating, solvent is used to dissolve resin and filler, filler is used to improve density and corrosion resistance of the coating, PCBA coated with conformal coating can improve environmental adaptability and extend service life, so in the PCBA production process, there will be a process designed to coat PCBA with conformal coating. However, the existing conformal coating process uses manual coating or automated equipment coating, manual operation has low work efficiency and cannot guarantee quality, and automated equipment coating equipment has high investment cost, which is usually suitable for mass production. Utility Model Content

[0003] The purpose of the embodiment of the utility model is to provide a PCBA immersion fixture, which can meet the needs of small-scale batch production while ensuring the quality of the PCBA three-conformal coating.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] Provided is a PCBA immersion jig, comprising: a jig body, on which an immersion pool is formed for immersing a shaped PCBA; a clamping assembly, which is mounted above the immersion pool and has a PCBA mounting portion for mounting the PCBA, and the PCBA is suspended in the immersion pool through the clamping assembly; and a component mounting groove is provided on the jig body, and the clamping assembly is mounted on the jig body through the component mounting groove.

[0006] The distance between the clamping assembly and the immersion tank is set such that, when the PCBA is mounted on the clamping assembly, the PCBA can be immersed in the conformal coating in the immersion tank, and the clamping assembly is located above the liquid level of the conformal coating.

[0007] By setting up an immersion pool with a clamping assembly, the PCBA is hung in the immersion pool for conformal coating. The conformal coating of the PCBA using a jig can ensure the stability of the coating quality. The same batch of PCBA products have the same coating effect, and there is no need to use a complex mechanical structure, so the equipment cost is low.

[0008] Optionally, an overflow edge is provided at the periphery of the soaking pool, an overflow groove is formed at the periphery of the overflow edge, and the height of the overflow edge in the vertical direction is higher than the height of the bottom of the overflow groove.

[0009] The overflow edge limits the liquid level of the overflow tank. When excessive conformal coating is added to the immersion tank, it will automatically overflow the overflow edge and flow into the overflow tank, ensuring that the liquid level of the conformal coating in the immersion tank is constant.

[0010] Optionally, an overflow hole is provided at the bottom of the overflow trough.

[0011] After the conformal paint overflows into the overflow groove, it can be discharged through the overflow hole.

[0012] Optionally, there is one immersion pool and there are multiple clamping assemblies, and multiple clamping assemblies share one immersion pool; or, the number of the immersion pools is the same as the number of the clamping assemblies, and each clamping assembly is provided with a corresponding immersion pool.

[0013] One PCBA immersion fixture can be used to perform conformal coating on multiple PCBAs at the same time. The required conformal coating liquid level may be the same or different. When the same conformal coating liquid level is required, the same immersion tank can be used, or different immersion tanks with the same overflow edge height and depth can be used. When different conformal coating liquid level heights are required, different immersion tanks can be used for immersion coating.

[0014] Optionally, a supporting platform is provided at the bottom of the soaking tank, and the PCBA is supported on the supporting platform when immersed in the soaking tank.

[0015] The support platform is used to support the PCBA at the bottom to prevent the PCBA from falling and tilting under the action of gravity, which will affect the quality of the molding.

[0016] Optionally, a level is also provided on the fixture body.

[0017] The horizontality of the fixture body affects the height balance of the conformal coating liquid level. In a tilted state, the conformal coating of the PCBA will be tilted and the conformal quality cannot be guaranteed.

[0018] Optionally, at least three support wheels are further included, and the support wheels are height-adjustably mounted on the bottom of the fixture body.

[0019] The support wheels are used to adjust the levelness of the fixture body.

[0020] Optionally, a component mounting groove is provided on the jig body, and the clamping assembly is mounted on the jig body through the component mounting groove.

[0021] The component installation groove has the function of limiting and fixing the clamping component.

[0022] Optionally, the component mounting groove includes a first mounting groove and a second mounting groove symmetrically arranged on the fixture body, and the clamping component has a first mounting end corresponding to the first mounting groove and a second mounting end corresponding to the second mounting groove, and the first mounting end and the second mounting end have different shapes and / or sizes.

[0023] The distinguishing installation end is used to determine the direction in which the clamping component is installed on the fixture body to avoid reverse installation that affects detection and observation.

[0024] Optionally, a positioning column is provided on the first mounting groove, and a positioning hole is provided on the first mounting end corresponding to the positioning column; or, a positioning column is provided on the second mounting groove, and a positioning hole is provided on the second mounting end corresponding to the positioning column.

[0025] On the one hand, the positioning column can play a role in preventing mistakes, and on the other hand, it can prevent the home appliance components from loosening and shifting in the component installation slot, resulting in unstable conformal effect.

[0026] Optionally, the clamping assembly includes an assembly body, the PCBA mounting portion is a pin-type female socket arranged on the assembly body, and the PCBA is installed on the clamping assembly by plugging and matching with the pin-type female socket through metal pins thereon.

[0027] Using a pin-type female socket to install the PCBA can protect the metal pins and prevent them from loosening.

[0028] Optionally, there are multiple pin-type female sockets, and a groove is provided at the bottom of the clamping assembly and between adjacent pin-type female sockets.

[0029] The grooves can prevent the conformal coating on one pin-type female connector from spreading to the adjacent pin-type female connector and contaminating the adjacent PCBA.

[0030] Optionally, a UV lamp is further included, and the UV lamp is arranged from above toward the immersion pool.

[0031] The ultraviolet light is used to check the thickness of PCBA foam paint.

[0032] The beneficial effects of the present application are as follows: by setting up an immersion pool in conjunction with a clamping assembly, the PCBA is suspended in the immersion pool for conformal coating, and the conformal coating of the PCBA is performed in the form of a jig to ensure the stability of the coating quality. The conformal coating effects of the same batch of PCBA products are equivalent, and there is no need to use a complex mechanical structure, and the equipment cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present application is further described in detail below based on the drawings and embodiments.

[0034] Figure 1This is a schematic diagram of the three-dimensional structure of the PCBA immersion fixture according to one embodiment of the present application;

[0035] Figure 2 This is a schematic side view of the structure of the PCBA immersion fixture according to one embodiment of the present application;

[0036] Figure 3 This is a schematic diagram of the disassembled state of the fixture body and the clamping assembly with the PCBA installed according to an embodiment of the present application;

[0037] Figure 4 This is a schematic diagram of the three-dimensional structure of the fixture body according to an embodiment of the present application;

[0038] Figure 5 This is a schematic diagram of the three-dimensional structure of a PCBA immersion fixture according to another embodiment of the present application (the ultraviolet light is not shown);

[0039] Figure 6 This is a schematic diagram of a disassembled state of a fixture body and a clamping assembly with a PCBA installed thereon according to another embodiment of the present application;

[0040] Figure 7 This is a schematic diagram of a disassembled state of a fixture body and a clamping assembly with a PCBA installed thereon according to another embodiment of the present application;

[0041] Figure 8 This is a schematic diagram of a clamping assembly and a PCBA in a disassembled state according to an embodiment of the present application;

[0042] Fig. 9 This is a schematic diagram of a disassembled state of another clamping assembly and PCBA according to an embodiment of the present application;

[0043] Fig.10 This is a schematic diagram of a disassembled state of another clamping assembly and PCBA according to an embodiment of the present application;

[0044] Fig.11 This is a schematic diagram of a disassembled state of another clamping assembly and PCBA according to an embodiment of the present application;

[0045] Fig.12 A schematic side view of a clamping assembly according to an embodiment of the present application;

[0046] Fig.13 This is a schematic side view of another clamping assembly described in an embodiment of the present application.

[0047] In the figure: 100, fixture body; 110, immersion tank; 120, overflow edge; 130, overflow groove; 140, overflow hole; 150, support platform; 160, level; 170, support wheel; 180, component mounting groove; 181, first mounting groove; 182, second mounting groove; 183, positioning column; 200, clamping component; 210, component body; 211, pin-type female socket; 212, first mounting end; 213, second mounting end; 214, positioning hole; 215, groove; 300, PCBA; 310, metal pin; 400, ultraviolet light; 500, lamp bracket. DETAILED DESCRIPTION

[0048] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0049] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0050] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0051] PCBA is the abbreviation of Printed Circuit Board Assembly, which means printed circuit board assembly in Chinese. PCBA is an electronic product formed by welding and assembling printed circuit boards (PCBs) and components.

[0052] PCBA coating with conformal coating refers to applying a layer of coating on the surface of PCBA with moisture-proof, salt spray-proof, mildew-proof and other functions. Conformal coating is usually composed of resin, solvent, filler, etc. Resin provides strength and durability of the coating; solvent is used to dissolve resin and filler; filler is used to improve the density and corrosion resistance of the coating.

[0053] The purpose of PCBA coating with conformal coating is to protect PCBA from environmental factors. PCBA may be corroded by environmental factors such as moisture, salt spray, and mold during use, which may lead to circuit board corrosion, short circuit and other faults. Conformal coating can effectively prevent these environmental factors from corroding PCBA, thereby improving the reliability and service life of PCBA.

[0054] Existing conformal coatings usually have three methods: machine spraying, manual brushing and immersion. The machine spraying method requires expensive equipment costs and can only produce thinner coatings (about <150μm); manual brushing requires operators to be very skilled, manual work efficiency is low and quality is not guaranteed; the immersion method usually uses an automatic line, which requires large equipment investment and requires large-scale production orders, otherwise the paint waste cost is high.

[0055] Based on this, the present application provides an immersion jig for PCBA, which can ensure operation efficiency and operation quality without high-cost equipment investment and can meet the needs of small-batch production.

[0056] like Figure 1-13 As shown, the embodiment of the present application takes PCBA conformal coating as an example to specifically illustrate the structure and working process of the PCBA immersion fixture, and the PCBA immersion fixture includes:

[0057] A fixture body 100 is formed with an immersion tank 110 for immersing the conformal coating PCBA 300;

[0058] The clamping assembly 200 is mounted above the immersion tank 110 and has a PCBA mounting portion. The PCBA 300 can be mounted on the PCBA mounting portion and is suspended in the immersion tank 110 through the clamping assembly 200 for conformal coating.

[0059] The fixture body 100 is provided with a component installation groove 180 , and the clamping assembly 200 is mounted on the fixture body 100 through the component installation groove 180 .

[0060] The component installation groove 180 has the function of limiting and fixing the clamping component 200. It can limit the installation height and horizontal position of the clamping component 200 and prevent it from shaking after installation, thereby ensuring the stable position of the PCBA 300 installed on the clamping component 200, thereby ensuring the conformal quality.

[0061] The distance between the clamping assembly 200 and the immersion tank 110 is set such that, when the PCBA 300 is mounted on the clamping assembly 200 , the PCBA 300 can be immersed in the conformal coating in the immersion tank 110 , and the clamping assembly 200 is located above the liquid level of the conformal coating.

[0062] By setting up an immersion tank 110 and a clamping assembly 200, PCBA300 is suspended in the immersion tank 110 for conformal coating. The conformal coating of PCBA300 with a jig can ensure the stability of the coating quality. The coating effects of the same batch of PCBA300 products are equivalent, and there is no need to use a complex mechanical structure, so the equipment cost is low.

[0063] The PCBA immersion jig described in the embodiment of the present application has an immersion tank itself, and does not need to be used in conjunction with an external immersion tank. It can independently realize the PCBA immersion and shaping function, has a simple structure, and has low equipment cost.

[0064] It is understood that the above-mentioned coating, also known as coating, is a process of coating a material on the surface of another material. Coating can play a protective, decorative, functional and other roles. PCBA300 conformal coating refers to the setting of conformal coating on the surface of PCBA300.

[0065] It should be pointed out that the conformal coating of PCBA is only one use case of the PCBA immersion jig described in this application. In other embodiments, it can also be used to immerse other materials on the PCBA. The hanging immersion and coating method is mainly adopted because the PCBA 300 has a coating restricted area. During the immersion process, it is necessary to avoid the coating restricted area to coat other positions. Therefore, the entire PCBA 300 cannot be immersed in the immersion tank 110. At the same time, this solution also facilitates the removal of the PCBA 300 from the immersion tank 110.

[0066] In the process of batch PCBA300 conformal coating, the liquid level of the conformal coating in the immersion tank 110 required for the PCBA300 products of the same specification and model is also required to be the same. In order to control the liquid level, refer to Figure 4 , 7 As shown, in the embodiment of the present application, an overflow edge 120 is provided at the periphery of the soaking pool 110 , an overflow groove 130 is formed at the periphery of the overflow edge 120 , and the height of the overflow edge 120 in the vertical direction is higher than the bottom height of the overflow groove 130 .

[0067] The overflow edge 120 limits the liquid level of the overflow tank 130. When the conformal coating in the immersion tank 110 is excessively added, it will automatically overflow the overflow edge 120 and flow into the overflow tank 130, thereby ensuring a constant liquid level of the conformal coating in the immersion tank 110. When the liquid level of the conformal coating is stable, the conformal coating quality of the PCBA 300 can be effectively controlled in batches by ensuring a constant hoisting height.

[0068] It can be understood that the lowest position of the overflow edge 120 determines the liquid level of the conformal coating. Therefore, the overflow edge 120 is not limited to the situation where all positions are of the same height as in the above embodiments. In other embodiments of the present application, overflow edges 120 of different heights can also be used, or an overflow channel can be provided on the side wall of the immersion tank 110, as long as the conformal coating in the immersion tank 110 can flow out when there is an excess amount without raising the liquid level of the conformal coating.

[0069] Further, see Figure 4 As shown, the overflow groove 130 is provided with an overflow hole 140 at the bottom. After the conformal paint overflows into the overflow groove 130, it can be discharged through the overflow hole 140. After the conformal paint is discharged through the overflow hole 140, it can be recycled or directly discharged as waste.

[0070] In the present application, the number of immersion tanks 110 and clamping assemblies 200 can be set in various situations, and those skilled in the art can make reasonable choices based on the product type and quantity requirements of PCBA300.

[0071] For example, in an optional embodiment of the present application, the number of the immersion tank 110 is one, and the number of the clamping assembly 200 is one. This structure is suitable for production scenarios with small production batches and a single PCBA300 product type.

[0072] For another example, in another optional embodiment of the present application, the number of the immersion tank 110 is also one, but there are multiple clamping assemblies 200, and the multiple clamping assemblies 200 share one immersion tank 110; this structure is suitable for application scenarios where a large number of PCBA300 products are produced.

[0073] For another example, in an optional embodiment of the present application, the number of the immersion pools 110 is the same as the number of the clamping assemblies 200, and each of the clamping assemblies 200 corresponds to one immersion pool 110. A PCBA immersion fixture can be used to simultaneously perform conformal coating on multiple PCBA300s. The required conformal coating liquid levels may be the same or different. When the same conformal coating liquid level is required, the same immersion pool 110 can be used, or different immersion pools 110 with the same overflow edge 120 height and depth can be used. When different conformal coating liquid levels are required, different immersion pools 110 can be used for immersion coating. The number of the immersion pools 110 is the same as the number of the clamping assemblies 200, and the structure in which each of the clamping assemblies 200 corresponds to one immersion pool 110 is suitable for application scenarios in which a large number of PCBA300 products are produced and there are many types of PCBA300 products.

[0074] It is understandable that when there are multiple clamping assemblies 200 , in order to optimize the layout, a solution is usually adopted in which the clamping assemblies 200 are arranged in parallel with each other.

[0075] During the entire immersion and conforming process, PCBA300 has high requirements on the depth and direction of immersion in the conformal coating liquid surface. In order to prevent the PCBA300 from changing its position in the conformal coating liquid surface and causing poor conforming quality, illustratively, in the embodiment of the present application, a supporting platform 150 is provided at the bottom of the immersion tank 110, and the PCBA300 is supported on the supporting platform 150 while being immersed in the immersion tank 110. The supporting platform 150 is used to support the PCBA300 at the bottom to prevent the PCBA300 from falling and tilting under the action of gravity and affecting the conforming quality.

[0076] It is understandable that, because the same immersion pool 110 may be used for immersing multiple types of PCBA 300, and different types of PCBA 300 need to be immersed in the conformal coating at different depths, the support platform 150 can be independently set to the height of each group of support platforms 150, so as to support different types of PCBA 300. If the immersion pool 110 is directly set to be shallow, it can only be adapted to one type of PCBA 300, and the universality of the fixture is poor.

[0077] It is understandable that the horizontality of the fixture body 100 affects the height balance of the conformal coating. In a tilted state, the conformal coating of the PCBA300 will be tilted and the conformal quality cannot be guaranteed. Figure 4-7As shown, the jig body 100 in the embodiment of the present application is also provided with a level 160. Optionally, the level 160 includes a horizontal level 160 and a vertical level 160. By providing the level 160 in two directions, the horizontal degree of the jig body 100 in the horizontal plane can be detected.

[0078] When it is determined by the level meter 160 or other means that the fixture body 100 is not in a horizontal state, it is necessary to adjust the level of the fixture body 100. Figure 2 As shown, the present application further includes at least three support wheels 170, and the support wheels 170 are height-adjustably mounted on the bottom of the fixture body 100. The support wheels 170 are used to adjust the horizontality of the fixture body 100.

[0079] For example, in the case of a rectangular fixture body 100, there are four support wheels 170, which are respectively arranged at the four corners of the bottom of the fixture body 100. Each support wheel 170 can be individually adjusted in height to adjust the level of the fixture body 100.

[0080] It is understandable that in one embodiment, the support wheel 170 is a threaded structure, and the depth of the support wheel 170 inserted into the fixture body 100 can be adjusted by rotation, thereby achieving height adjustment, and then adjusting the level of the fixture body 100. Of course, the support wheel 170 with the threaded structure described above is not a limitation to this solution, and those skilled in the art can also adopt other adjustment structures according to actual needs.

[0081] Specifically, refer to Figure 4 , 7 As shown, the component installation groove 180 includes a first installation groove 181 and a second installation groove 182 symmetrically arranged on the fixture body 100, and the clamping component 200 has a first installation end 212 corresponding to the first installation groove 181 and a second installation end 213 corresponding to the second installation groove 182, and the first installation end 212 and the second installation end 213 have different shapes and / or sizes. The installation ends of the clamping component 200 are distinguished to determine the direction in which the clamping component 200 is installed on the fixture body 100 to avoid reverse installation affecting detection and observation.

[0082] Since PCBA300 has a direction when installed on the clamping assembly 200, when the clamping assembly 200 is installed upside down, the operator will not be able to observe the situation of PCBA300 immersed in the immersion tank 110 in the correct direction, and when the lamination quality needs to be tested after the lamination is completed, observation is also required. Therefore, the correct installation direction of the clamping assembly 200 is very necessary. In this application, the installation direction of the clamping assembly 200 is distinguished by the shape, size, shape and size of the clamping assembly 200. When the installation direction is correct, it can be installed smoothly. When the installation direction is incorrect, the installation assembly cannot be installed in the assembly installation slot 180, thereby playing an anti-fool function.

[0083] Optionally, in the present application, a positioning column 183 may be provided on the first mounting groove 181, and a positioning hole 214 may be provided on the first mounting end 212 corresponding to the positioning column 183; or, a positioning column 183 may be provided on the second mounting groove 182, and a positioning hole 214 may be provided on the second mounting end 213 corresponding to the positioning column 183. The positioning column 183 may play a foolproof role on the one hand, and may prevent the clamping assembly 200 from loosening and displacing in the assembly mounting groove 180 on the other hand, resulting in an unstable conforming effect.

[0084] The following is combined with Figure 8-11 The specific structure of the clamping assembly 200 is introduced. The clamping assembly 200 includes an assembly body 210. The PCBA mounting portion is a pin-type female socket 211 disposed on the assembly body 210. The PCBA 300 is mounted on the clamping assembly 200 by plugging and matching the metal pins 310 thereon with the pin-type female socket 211. The use of the pin-type female socket 211 to install the PCBA 300 can protect the metal pins 310 and has a good anti-loosening effect.

[0085] Normally, the metal pin 310 of PCBA300 is a prohibited area for coating of the conformal coating, that is, the metal pin 310 is prohibited from contacting the conformal coating. In the present application, the metal pin 310 is used as a structure connecting the PCBA300 and the component body 210. On the one hand, the metal pin 310 is located at the top and may not be immersed in the conformal coating. On the other hand, the metal pin 310 is inserted into the pin-type female socket 211, which also forms a physical isolation. Even if a small amount of conformal coating is immersed in the position of the metal pin 310, it is difficult to enter the gap between the metal pin 310 and the plug-in female socket.

[0086] It should be pointed out that due to the different structure of PCBA300, the location of the prohibited area that needs to be coated with conformal coating is different. PCBA300 has two installation methods: horizontal and vertical. The corresponding pin-type female socket 211 has two types: horizontal female socket and vertical female socket.

[0087] Figure 8 and Fig. 9 Two clamping assembly structures of PCBA with horizontal installation are shown, in which the PCBA is set horizontally. Figure 8 The metal pins on the PCBA are set horizontally, and the sockets on the pin-type female socket on the clamping assembly are also set horizontally. Fig. 9 The metal pins on the PCBA are arranged vertically, and the sockets of the pin-type female socket on the clamping assembly are also arranged vertically.

[0088] Fig.10 and Fig.11 Two types of clamping assembly structures are shown in which the PCBA is installed vertically, wherein the PCBA is arranged in the vertical direction. Fig.10 The metal pins on the PCBA are arranged in the horizontal direction, and the sockets of the pin-type female socket on the clamping assembly are also arranged in the vertical direction. Fig.11 The metal pins on the PCBA are arranged vertically, and the sockets of the pin-type female socket on the clamping assembly are also arranged vertically.

[0089] In the present application, there are multiple pin-type female sockets 211 , and a groove 215 is provided at the bottom of the clamping assembly 200 and between adjacent pin-type female sockets 211 .

[0090] For example, refer to Fig.12 , 13 As shown, in an optional embodiment of the present application, five pin-type female sockets 211 are provided on a component body 210, and grooves 215 are provided between adjacent pin-type female sockets 211, that is, four grooves 215 are provided. The provision of the grooves 215 can prevent the conformal coating on one pin-type female socket 211 from being stained with the conformal coating and then being spread to the adjacent pin-type female socket 211 due to the tension of the conformal coating or the capillary phenomenon, thereby contaminating the adjacent PCBA 300. The grooves 215 play the role of isolating the adjacent pin-type female sockets 211.

[0091] Specifically, the surfaces at both ends of the component body 210 facing the fixture body 100 are flat height-limited bottom surfaces, and the height-limited bottom surfaces have high processing accuracy to ensure the height accuracy of the component body 210 installed in the fixture body 100.

[0092] Furthermore, the immersion jig for PCBA described in the embodiment of the present application further includes a UV lamp 400 , and the UV lamp 400 is arranged from above toward the immersion pool 110 .

[0093] Reference Figure 1 , 2 As shown, a lamp bracket 500 is disposed on the side of the fixture body 100 , and the ultraviolet lamp 400 is disposed above the fixture body 100 through the lamp bracket 500 .

[0094] The ultraviolet lamp 400 is used to check the thickness of the PCBA300 foam paint, which is achieved by using the characteristics of the fluorescent agent. The fluorescent agent is a substance that emits visible light under ultraviolet light. When the ultraviolet lamp 400 irradiates the surface of the foam paint containing the fluorescent agent, the fluorescent agent will emit visible light, so the thickness of the foam paint can be judged by the intensity of the visible light.

[0095] Specifically, when the ultraviolet light is irradiated on the surface of the foam paint containing the fluorescent agent, the fluorescent agent will absorb the energy of the ultraviolet light and release it in the form of visible light. The intensity of the visible light is proportional to the energy of the ultraviolet light absorbed by the fluorescent agent. Therefore, the thicker the foam paint is, the more ultraviolet light energy the fluorescent agent absorbs, and the higher the intensity of the visible light is.

[0096] Therefore, the thickness of the foam paint can be judged by observing the intensity of the visible light on the foam paint surface under the irradiation of the ultraviolet lamp 400. If the foam paint is too thick or too thin, the intensity of the visible light will be uneven.

[0097] The PCBA immersion fixture in this application is simple and light in design, small in size, with a small operation area, small footprint, simple operation, foolproof, and low operator skill requirements. It can ensure product quality, reduce losses caused by human errors, meet production process requirements, facilitate factory management, and can adjust the operation process and position at any time. The PCBA immersion fixture in this application adopts non-automatic production, which is more maneuverable and flexible, and is particularly suitable for small and medium-sized batch board production.

[0098] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0099] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0100] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0101] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. A PCBA immersion fixture, characterized in that: include: A fixture body (100) having a soaking pool (110) formed thereon for soaking the coated PCBA (300); A clamping assembly (200) is mounted above the soaking tank (110) and has a PCBA mounting portion for mounting the PCBA (300); the PCBA (300) is suspended in the soaking tank (110) through the clamping assembly (200); The jig body (100) is provided with a component installation groove (180), and the clamping component (200) is mounted on the jig body (100) through the component installation groove (180).

2. The PCBA immersion jig according to claim 1, characterized in that: An overflow edge (120) is arranged around the soaking pool (110), an overflow groove (130) is formed around the overflow edge (120), and the height of the overflow edge (120) in the vertical direction is higher than the bottom height of the overflow groove (130).

3. The PCBA immersion jig according to claim 2, characterized in that: An overflow hole (140) is provided at the bottom of the overflow groove (130).

4. The PCBA immersion jig according to claim 1, characterized in that: The number of the soaking pool (110) is one, the number of the clamping assemblies (200) is multiple, and the multiple clamping assemblies (200) share one soaking pool (110); or, the number of the soaking pools (110) is the same as the number of the clamping assemblies (200), and each clamping assembly (200) is provided corresponding to one soaking pool (110).

5. The PCBA immersion jig according to claim 1, characterized in that: A supporting platform (150) is provided at the bottom of the soaking tank (110), and the PCBA (300) is supported on the supporting platform (150) while being soaked in the soaking tank (110).

6. The PCBA immersion jig according to claim 1, characterized in that: The fixture body (100) is also provided with a level (160).

7. The PCBA immersion jig according to claim 1, characterized in that: It also includes at least three support wheels (170), wherein the support wheels (170) are mounted on the bottom of the fixture body (100) in an adjustable height.

8. The PCBA immersion jig according to claim 1, characterized in that: The component mounting groove (180) includes a first mounting groove (181) and a second mounting groove (182) symmetrically arranged on the fixture body (100); the clamping component (200) has a first mounting end (212) corresponding to the first mounting groove (181) and a second mounting end (213) corresponding to the second mounting groove (182); the first mounting end (212) and the second mounting end (213) have different shapes and / or sizes.

9. The PCBA immersion jig according to claim 8, characterized in that: The first mounting groove (181) is provided with a positioning column (183), and the first mounting end (212) is provided with a positioning hole (214) corresponding to the positioning column (183); or the second mounting groove (182) is provided with a positioning column (183), and the second mounting end (213) is provided with a positioning hole (214) corresponding to the positioning column (183).

10. The PCBA immersion jig according to claim 1, characterized in that: The clamping assembly (200) comprises an assembly body (210); the PCBA mounting portion is a pin-type female socket (211) arranged on the assembly body (210); and the PCBA (300) is mounted on the clamping assembly (200) by plugging and matching the metal pins (310) thereon with the pin-type female socket (211).

11. The PCBA immersion jig according to claim 10, characterized in that: There are a plurality of pin-type female sockets (211), and a groove (215) is provided at the bottom of the clamping assembly (200) and between adjacent pin-type female sockets (211).

12. The PCBA immersion jig according to claim 1, characterized in that: It also includes a UV lamp (400), wherein the UV lamp (400) is arranged from above toward the soaking pool (110).

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