Non-spraying area shielding type PCBA jig

Abstract

The utility model provides a kind of non-spraying area shielding type PCBA fixture, including board frame and two sets of assembly plate;Board frame both ends are equipped with multiple sets of positioning column, two sets of assembly plate are respectively arranged at board frame both ends, and two sets of assembly plate are connected with board frame by multiple sets of positioning column, multiple sets of assembly slot are all set in assembly plate, and multiple sets of assembly slot are all replaced with shielding cover;Corresponding assembly slide groove is equipped on the opposite inner side of board frame, two sets of pressure buckle components are equipped in board frame, and the pressure buckle component includes clamping rod, assembly part is equipped on the both sides of clamping rod, clamping rod both sides are slidably arranged in assembly slide groove, and assembly part is arranged in board frame;Multiple sets of positioning mounting hole are equipped on the top end of clamping rod, and mounting piece is rotatably arranged in mounting hole by screw.The shielding cover in the assembly slot of assembly plate can shield non-spraying area, cooperate with pressure buckle component fixed plate, avoid three-proof paint adhering element, reduce labor cost and production time, improve production efficiency and yield.

Description

Technical Field

[0001] This utility model belongs to the field of PCBA fixture technology, and more specifically, it relates to a non-coating area masking type PCBA fixture. Background Technology

[0002] PCBA stands for Printed Circuit Board Assembly. It involves assembling various electronic components onto a printed circuit board (PCB) to form a complete assembly with specific circuit functions. It is widely used in the field of electronic product manufacturing. After PCBA assembly, it needs to be coated with conformal coating using a fixture. Conformal coating provides multiple layers of protection for PCBA, thereby ensuring stable and reliable operation of PCBA in harsh environments. However, traditional PCBA fixtures have poor masking effect on non-coated areas. Excess conformal coating will adhere to the components on the board. The conformal coating in non-coated areas is difficult to clean. Improper handling can scratch the circuit board or damage the components, increasing labor costs and production time, and reducing production efficiency and yield. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a non-coated area masking PCBA fixture. This solves the technical problems in the prior art where traditional PCBA fixtures have poor masking effect on non-coated areas, and conformal coating easily adheres to components, leading to difficulties in subsequent cleaning, and improper handling can damage boards and components, thereby reducing efficiency and yield.

[0004] The purpose and effect of this utility model of a non-sprayed area masking type PCBA fixture are achieved by the following specific technical means: A non-painted area masking type PCBA fixture includes a plate frame and two sets of assembly plates. Multiple sets of positioning posts are provided at both ends of the plate frame. The two sets of assembly plates are respectively located at both ends of the plate frame and connected to the plate frame via the multiple sets of positioning posts. Multiple sets of assembly slots are provided on each assembly plate, and masking covers are replaceably installed in each of the multiple sets of assembly slots. Assembly grooves are correspondingly provided on two opposite inner surfaces of the plate frame. Two sets of snap-fit ​​assemblies are provided within the plate frame. Each snap-fit ​​assembly includes a clamping rod, with assembly parts on both sides of the clamping rod. The clamping rod slides through the assembly grooves on both sides, and the assembly parts pass through the plate frame. Multiple sets of positioning mounting holes are provided at the top of the clamping rod, and mounting parts are rotatably installed in the mounting holes via screws.

[0005] The above technical solution further includes that each of the multiple positioning columns of the plate frame is provided with a limiting cap. When the two sets of assembly plates are installed on the multiple positioning columns of the plate frame, the limiting cap is sleeved on the positioning column, and the bottom end of the limiting cap is in contact with the assembly plate.

[0006] The above technical solution further includes that two sets of locking grooves are provided through the plate frame, and locking bolts and locking nuts are provided at both ends of the locking grooves. The clamping rod is provided with locking holes corresponding to the two sets of locking grooves. When the clamping rod is slidably disposed in the assembly slide groove on both sides, the clamping rod is locked in position by the locking bolts and the locking nuts.

[0007] The above technical solution further includes that the mounting component has a mounting cavity, a snap rod is movably inserted in the mounting cavity, a limiting plate is provided on the snap rod in the mounting cavity, and a spring is also sleeved on the snap rod, with both ends of the spring contacting the limiting plate and the mounting cavity respectively.

[0008] The above technical solution further includes that the bottom end of the snap rod is provided with a rubber anti-slip block, and the top end of the snap rod is provided with a lifting plate to facilitate the lifting of the snap rod.

[0009] The above technical solution further includes that the clamping rod and the plate frame are respectively provided with installation guide grooves for installing the plate; the two sets of plate frames are also provided with separator rods for distinguishing the position of the plate.

[0010] The above technical solution further includes that the plate frame is provided with track connectors on both sides and guide positioning rails on the other two sides.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The masking cover is assembled into the assembly slot of the assembly board using a quick-release buckle structure. After installation, the bottom surface of the masking cover can contact the PCBA board, providing shielding for non-painted areas and preventing conformal coating from adhering to components in these areas. Simultaneously, with the help of the clamping components within the board frame, the clamping rod slides within the assembly groove via the assembly components. Working in conjunction with the clamping rod and spring in the mounting components, the PCBA board is secured, preventing board displacement during painting and thus masking failure. The clamping rod position can be locked using locking bolts and locking nuts, further ensuring the masking position, reducing subsequent cleaning work, preventing board damage due to improper cleaning, and improving production yield and efficiency.

[0012] 2. The assembly slots on the assembly plate allow for the replacement of masking covers of different specifications. These modular masking covers can adapt to different types of PCBA boards with varying non-painting area distributions, eliminating the need to manufacture a separate fixture for each type of board. Simultaneously, the track connectors and guide rails on both sides of the board frame allow the fixture to be adapted to different painting equipment and production lines, enhancing its versatility. This reduces the number of dedicated fixtures required, lowers fixture procurement and maintenance costs, and simplifies masking cover replacement, eliminating complex procedures and shortening fixture adjustment time, thus improving the fixture's adaptability in the production of various PCBA boards. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the assembled structure of this utility model.

[0014] Figure 2 This is an exploded structural diagram of the present invention.

[0015] Figure 3 yes Figure 2 A magnified structural diagram of region a in the middle.

[0016] Figure 4 This is a cross-sectional view of the snap fastener assembly of this utility model.

[0017] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Sheet frame; 2. Shielding cover; 101. Assembly plate; 102. Clamping rod; 103. Mounting component; 201. Limit cap; 301. Locking bolt; 401. Press rod; 402. Spring; 501. Anti-slip block; 502. Lifting plate; 601. Guide groove; 602. Divider rod; 701. Connecting component; 702. Guide positioning rail. Detailed Implementation

[0018] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model. Example:

[0019] like Figures 1 to 4 As shown, this utility model provides a non-sprayed area masking type PCBA fixture, including a plate frame 1 and two sets of assembly plates 101. Multiple sets of positioning posts are provided at both ends of the plate frame 1. The two sets of assembly plates 101 are respectively located at both ends of the plate frame 1 and connected to the plate frame 1 through the multiple sets of positioning posts. Multiple sets of assembly slots are provided on each assembly plate 101, and masking covers 2 are replaced in each of the multiple sets of assembly slots. Assembly grooves are correspondingly provided on two opposite inner surfaces of the plate frame 1. Two sets of snap-fit ​​assemblies are provided inside the plate frame 1. The snap-fit ​​assemblies include clamping rods 102, with assembly parts on both sides of the clamping rods 102. The clamping rods 102 slide through the assembly grooves on both sides, and the assembly parts pass through the plate frame 1. Multiple sets of positioning mounting holes are provided at the top of the clamping rods 102, and mounting parts 103 are rotatably installed in the mounting holes through screws. Multiple sets of positioning posts are provided at both ends of the board frame 1. Two sets of assembly plates 101 are connected to the board frame 1 through the positioning posts. Multiple sets of assembly slots are opened on the assembly plates 101, and the masking covers 2 can be replaced in the assembly slots. This setting allows the masking covers 2 to be replaced according to actual needs, meeting the masking requirements of different non-painting areas, improving the adaptability of the fixture to different PCBA boards, and reducing the need to remake the fixture due to differences in boards.

[0020] The board frame 1 has assembly grooves on two opposite inner sides. Clamping rods 102 slide through these grooves via assemblies on both sides, allowing them to move along the grooves. This design facilitates adjustment of the clamping rods 102 to accommodate PCBA boards of different sizes, ensuring stable contact between the clamping rods 102 and the board, providing suitable clamping space, and guaranteeing the board's stable position within the fixture. The top of the clamping rods 102 has multiple sets of positioning mounting holes, with mounting components 103 rotatably mounted within these holes via screws. This design allows the mounting components 103 to be fixed in different mounting holes via screws, enabling position adjustment and allowing them to avoid protruding parts based on the component distribution on the board, preventing pressure on components while ensuring the mounting components 103 securely hold the board in place.

[0021] The assembly plate 101 is connected to the plate frame 1 via positioning posts, the clamping rod 102 is connected to the plate frame 1 via an assembly component, and the mounting component 103 is connected to the clamping rod 102 via screws. The connection method between the components is simple, facilitating assembly and disassembly. When a component is worn or damaged, it can be replaced individually without replacing the entire fixture, reducing maintenance costs, shortening repair time, and ensuring the continuous use of the fixture.

[0022] like Figure 1 and Figure 2 As shown, each of the multiple positioning columns of the plate frame 1 is provided with a limiting cap 201. When the two sets of assembly plates 101 are installed on the multiple positioning columns of the plate frame 1, the limiting cap 201 is sleeved on the positioning column, and the bottom end of the limiting cap 201 is in contact with the assembly plate 101. The positioning post is equipped with a limiting cap 201. After the assembly plate 101 is installed, the limiting cap 201 is fitted onto the positioning post and its bottom end contacts the assembly plate 101. This limits the position of the assembly plate 101 on the positioning post, preventing the assembly plate 101 from moving axially along the positioning post and ensuring the relative position stability of the assembly plate 101 and the plate frame 1. The limiting cap 201, in contact with the assembly plate 101, applies downward pressure to the assembly plate 101, enhancing the tightness of the connection between the assembly plate 101 and the plate frame 1, reducing the displacement of the assembly plate 101 caused by vibration during the spraying process, and ensuring the masking effect of the masking cover 2 on non-sprayed areas. By setting the limiting cap 201, the installation depth of the assembly plate 101 on the positioning post can be quickly determined without additional measurement and adjustment, simplifying the installation process of the assembly plate 101, improving the efficiency of fixture assembly, and ensuring that the installation height of multiple sets of assembly plates 101 is consistent.

[0023] like Figures 2 to 3As shown, two sets of locking slots are provided through the board frame 1. Locking bolts 301 and locking nuts are inserted at both ends of the locking slots. The clamping rod 102 is provided with locking holes corresponding to the two sets of locking slots. When the clamping rod 102 is slidably disposed in the assembly slide, the clamping rod 102 is locked in position by the locking bolts 301 and locking nuts. The board frame 1 is provided with locking slots, and the clamping rod 102 is provided with locking holes. The locking bolts 301 and locking nuts are inserted through the locking slots and correspond to the locking holes, which can fix the position of the clamping rod 102 and prevent the clamping rod 102 from sliding along the assembly slide, ensuring that the clamping rod 102 holds the PCBA board in a stable state and avoids board displacement during spraying. Loosening the locking nuts and removing the locking bolts 301 can release the locking of the clamping rod 102, and push the clamping rod 102 along the assembly slide to adjust its position, adapting to PCBA boards of different sizes. There is no need to replace the clamping rod 102 or adjust the overall structure of the fixture, improving the versatility of the fixture.

[0024] The locking bolt 301 and the locking nut work together to lock the clamp rod 102. The connection method is simple and the operation steps are few. The clamp rod 102 can be fixed and unlocked quickly, shortening the fixture adjustment time. It is suitable for scenarios where PCBA boards are frequently changed in mass production, thus improving production efficiency. The locking groove and the locking hole work together for positioning. The pressure applied by the locking bolt 301 and the locking nut can enhance the tightness of the connection between the clamp rod 102 and the board frame 1, reduce the loosening of the clamp rod 102 caused by vibration during the spraying process, and ensure the overall stability of the fixture.

[0025] like Figure 4 As shown, the mounting component 103 has a mounting cavity, and a retaining rod 401 is movably inserted through the mounting cavity. A limiting plate is provided on the retaining rod 401 within the mounting cavity, and a spring 402 is also fitted onto the retaining rod 401. The two ends of the spring 402 contact the limiting plate and the mounting cavity, respectively. The mounting component 103 has a mounting cavity, and the retaining rod 401 movably inserts through the mounting cavity. The limiting plate is on the retaining rod 401 within the mounting cavity, and the spring 402 is fitted onto the retaining rod 401 with both ends contacting the limiting plate and the mounting cavity. The spring 402 can apply elastic pressure to the retaining rod 401 through the limiting plate, ensuring that the retaining rod 401 is always in contact with the PCBA board, enhancing the fixing effect on the board. The retaining rod 401 can move within the mounting cavity, and in conjunction with the elasticity of the spring 402, it can adapt to height differences on the board surface caused by the presence of components. The retaining rod 401 can automatically adjust its position according to the undulations of the board surface, avoiding hard compression of protruding components while maintaining stable pressure on the board.

[0026] The elasticity of spring 402 reduces vibration during the spraying process, reduces loosening between the clamping rod 401 and the board caused by vibration, ensures the stability of the board position within the fixture, and guarantees the masking accuracy of the masking cover 2 for non-sprayed areas. The clamping rod 401 achieves elastic extension and retraction through spring 402 and the limiting plate. The structure is simple and can adapt to PCBA boards of different thicknesses or surface conditions without complicated adjustments, improving the fixture's adaptability to diverse boards and reducing fixture adjustment steps.

[0027] The bottom of the snap-fit ​​rod 401 is equipped with a rubber anti-slip block 501, and the top of the snap-fit ​​rod 401 is equipped with a lifting plate 502 for easy lifting. The anti-slip block 501 at the bottom of the snap-fit ​​rod 401, made of rubber, increases the friction between the snap-fit ​​rod 401 and the PCBA board, reducing the probability of the board sliding after fixing and ensuring the stability of the board's position during the spraying process. The rubber anti-slip block 501 has a certain degree of elasticity, which can avoid hard scratching or squeezing the surface of the board or components when in contact with the board, reducing the risk of damage to the board and components and protecting the appearance and functional integrity of the board. The lifting plate 502 at the top of the snap-fit ​​rod 401 allows the operator to move the snap-fit ​​rod 401 by pulling the lifting plate 502 without directly contacting the snap-fit ​​rod 401 body, increasing the convenience of operation, shortening the time for adjusting the snap-fit ​​rod 401, and improving the efficiency of the fixture.

[0028] like Figures 1 to 2 As shown, the clamping rod 102 and the board frame 1 are respectively provided with mounting guide grooves 601 for mounting the board; the two sets of board frames 1 are also provided with separator bars 602 for distinguishing the positions of the boards. The mounting guide grooves 601 on the adjacent sides of the clamping rod 102 and the board frame 1 can guide the installation process of the PCBA board, so that the board can quickly enter the preset position along the guide grooves 601, reducing the alignment adjustment steps during installation and thus improving clamping efficiency; the mounting guide grooves 601 can restrict the horizontal displacement of the board, and together with the fixing action of the clamping rod 102 and the clamping assembly, constrain the position of the board from multiple directions, enhance the stability of the board in the fixture, and avoid displacement due to force during spraying; the separator bars 602 on the two sets of board frames 1 can clearly divide the installation areas of different boards, prevent the position confusion or overlap of multiple boards during installation, ensure that each board is in the correct spraying position, and ensure that the spraying operation is carried out in an orderly manner.

[0029] The sheet frame 1 has track connectors 701 on both sides and guide positioning rails 702 on the other two sides. The track connectors 701 on both sides of the sheet frame 1 can connect the fixture to the conveying rail of the spraying equipment, realizing automatic conveying of the fixture within the equipment, eliminating the need for manual handling of the fixture, improving the automation level of the spraying process, and saving labor costs. The guide positioning rails 702 on the other two sides of the sheet frame 1 can guide the fixture during its movement, ensuring that the fixture moves along the preset path, avoiding fixture deviation that could lead to spraying position deviation, ensuring spraying accuracy, and reducing collision and wear between the fixture and the equipment.

[0030] The above description is merely an embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A non-painted area masking type PCBA fixture, comprising a board frame (1) and two sets of assembly plates (101), characterized in that: Multiple sets of positioning posts are provided at both ends of the plate frame (1). Two sets of assembly plates (101) are respectively provided at both ends of the plate frame (1). The two sets of assembly plates (101) are connected to the plate frame (1) through multiple sets of positioning posts. Multiple sets of assembly slots are provided on the assembly plates (101). Each set of assembly slots is equipped with a shield (2). Assembly slides are provided on the two opposite inner sides of the plate frame (1). Two sets of snap fasteners are provided inside the plate frame (1). The snap fasteners include clamping rods (102). Assembly parts are provided on both sides of the clamping rods (102). The clamping rods (102) slide through the assembly slides on both sides. The assembly parts are installed inside the plate frame (1). Multiple sets of positioning mounting holes are provided at the top of the clamping rods (102). Mounting parts (103) are installed in the mounting holes by rotating screws.

2. The PCBA fixture for masking non-coating areas according to claim 1, characterized in that: Each of the multiple positioning columns of the plate frame (1) is provided with a limiting cap (201). When the two sets of assembly plates (101) are installed on the multiple positioning columns of the plate frame (1), the limiting cap (201) is sleeved on the positioning column, and the bottom end of the limiting cap (201) contacts the assembly plate (101).

3. A non-coating area masking type PCBA fixture according to claim 2, characterized in that: Two sets of locking slots are provided through the plate frame (1). Locking bolts (301) and locking nuts are provided at both ends of the locking slots. The clamping rod (102) is provided with locking holes corresponding to the two sets of locking slots. When the clamping rod (102) is slidably placed in the assembly groove on both sides, the clamping rod (102) is locked in position by the locking bolts (301) and the locking nuts.

4. A non-coating area masking type PCBA fixture according to claim 3, characterized in that: The mounting component (103) has a mounting cavity, and a snap rod (401) is movably inserted in the mounting cavity. A limiting plate is provided on the snap rod (401) in the mounting cavity, and a spring (402) is also sleeved on the snap rod (401). The two ends of the spring (402) are in contact with the limiting plate and the mounting cavity, respectively.

5. A non-coating area masking type PCBA fixture according to claim 4, characterized in that: The bottom end of the snap rod (401) is provided with a rubber anti-slip block (501), and the top end of the snap rod (401) is provided with a lifting plate (502) to facilitate the lifting of the snap rod (401).

6. A non-coating area masking type PCBA fixture according to claim 1, characterized in that: The clamping rod (102) and the plate frame (1) are respectively provided with installation guide grooves (601) for installing the plate; the two sets of plate frames (1) are also provided with separator rods (602) for distinguishing the position of the plate.

7. A non-coating area masking type PCBA fixture according to claim 6, characterized in that: The plate frame (1) is provided with rail connectors (701) on both sides, and the plate frame (1) is provided with guide positioning rails (702) on the other two sides.

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