Device suitable for detecting three-proofing coating quality of pcb (printed circuit board)

Abstract

The utility model discloses a device suitable for detecting the three-proofing coating quality of a pcb (printed circuit board), which comprises an L-shaped frame body and a placing plate arranged on the L-shaped frame body, and a fluorescent ultraviolet lamp is arranged on the placing plate. Reinforcing ribs are arranged on the L-shaped frame body. And the multiple layers of placing plates are hinged to the L-shaped frame body. And a tension spring is arranged between the placing plate and the L-shaped frame body. Reinforcing supporting corners are arranged between the containing plates, and supporting columns are arranged on the reinforcing supporting corners. A slide way is arranged on the placing plate, the fluorescent ultraviolet lamp is arranged on the slide way in a sliding mode, the fluorescent ultraviolet lamp comprises a support body and a lamp body arranged on the support body, and the support body is in sliding fit with the slide way. And universal moving wheels are arranged at the bottom of the L-shaped frame body. According to the utility model, quality detection and drying functions are integrated, and the problems of low production efficiency and low production quality of the existing pcb are solved.

Description

Technical Field

[0001] The utility model relates to the field of PCB processing equipment, in particular to a device suitable for quality detection of three-proof coatings on PCB boards. Background Art

[0002] The three-conformal coating is a protective layer applied on the surface of the PCB to prevent damage such as dust, moisture and salt spray. It also has multiple functions such as anti-mildew, anti-vibration and anti-friction, which can protect and extend the service life of the product.

[0003] Conformal coating is typically transparent. After application to a PCB surface, it can be difficult for operators and quality inspectors to visually discern whether the coating has been applied to the intended areas or whether the coating has contaminated plug-in components that should not be coated. Insufficient conformal coating thickness will result in the coating failing to provide adequate protection during subsequent use, shortening the PCB's lifespan. Furthermore, contamination of components that should not be coated, such as plug-in components, can affect electrical connections and lead to faults such as poor contact. Large manufacturers have specialized inspection equipment to perform coating inspections. However, the high cost of such equipment makes it prohibitive for smaller manufacturers, who currently rely on manual inspections. Furthermore, conformal coating on PCBs requires time (typically 24 hours) to fully cure at room temperature. Because conformal coating is fluid, this can easily lead to uneven coating thickness across the PCB surface. Furthermore, the coating can overflow into other electronic components, impacting electrical connections. To improve production quality and efficiency, there is an urgent need for a room-temperature drying rack that can also perform quality inspections to ensure PCB processing. Utility Model Content

[0004] The purpose of the utility model is to provide a device suitable for the quality inspection of the three-conformal coating of PCB boards, which has both quality inspection and drying functions in one, so as to solve the problems of low production efficiency and low production quality of existing PCB boards.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device suitable for the quality inspection of the three-proof coating of PCB boards, comprising an L-shaped frame and a placement plate arranged on the L-shaped frame, wherein the placement plate is provided with a fluorescent ultraviolet lamp.

[0006] As a further improvement of the above technical solution:

[0007] The L-shaped frame is provided with reinforcing ribs.

[0008] The multiple layers of placement boards are hingedly arranged on the L-shaped frame.

[0009] A tension spring is provided between the placement plate and the L-shaped frame.

[0010] Reinforced support angles are provided between the placement plates, and support columns are provided on the reinforced support angles.

[0011] The placement plate is provided with a slideway, and the fluorescent ultraviolet lamp is slidably arranged on the slideway. The fluorescent ultraviolet lamp includes a bracket body and a lamp body arranged on the bracket body, and the bracket body slides with the slideway. The lamp body is a strip structure or a plurality of circular structures, which can meet the illumination requirements of the placement area.

[0012] The bottom of the L-shaped frame is provided with a universal moving wheel which should be provided with a brake mechanism.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] Enhanced structural stability: By setting reinforcing ribs on the L-shaped frame, the overall structural strength is increased, making the placement board more stable, improving the load-bearing capacity, and ensuring the stable placement of the PCB board during the inspection process.

[0015] Flexibility and convenience: The multi-layer placement plate design makes material placement more flexible, and the flip design facilitates operators to carry out coating and inspection work, thereby improving work efficiency.

[0016] Safety limit design: The setting of the tension spring effectively prevents the placement plate from accidentally falling, ensuring safety during operation. At the same time, manual force is required to lower it, which increases the controllability of the operation.

[0017] Improved load-bearing capacity: The design of strengthened support angles and support columns further enhances the load-bearing capacity of the placement board, enabling it to withstand the weight of more PCB boards and is suitable for batch testing.

[0018] All-round detection coverage: The sliding fluorescent UV lamp design on the slideway realizes all-round coverage detection of the upper surface of the PCB board, ensuring a comprehensive inspection of the coating quality.

[0019] Efficient quality inspection: Using conformal coating with UV tracer, the coating status can be visually displayed through fluorescent UV light illumination, quickly identifying coating quality problems and improving inspection efficiency and accuracy.

[0020] Prevent coating defects: By placing the PCB flat, the uneven thickness or overflow caused by the flow of the three-conformal coating solution is effectively avoided, ensuring the coating quality.

[0021] In summary, the utility model not only improves the efficiency and accuracy of the three-conformal coating quality inspection of PCB boards, but also reduces the operating cost and improves the operating safety, providing a reliable solution for the three-conformal coating quality inspection of PCB boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the combined structure of the L-shaped frame and the placement plate of the utility model;

[0023] Figure 2 For this utility model Figure 1 A in the middle is an enlarged structural diagram;

[0024] Figure 3 This is a side view of the structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the top view of the structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the installation structure of the fluorescent ultraviolet lamp of the utility model.

[0027] Figure numerals: 1, L-shaped frame; 2, placement plate; 21, slide; 31, bracket body; 32, lamp body; 4, reinforcement rib; 5, tension spring; 6, reinforcement support angle; 7, support column; 8, universal moving wheel. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating directions or positions, are based on the directions or positions shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean 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, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] like Figures 1 to 5 As shown, the device of this embodiment is suitable for the quality inspection of the three-conformal coating of PCB boards, including an L-shaped frame 1 and a placement plate 2 arranged on the L-shaped frame 1, and a fluorescent ultraviolet lamp is arranged on the placement plate 2.

[0033] The L-shaped frame 1 is provided with reinforcing ribs 4. The reinforcing ribs 4 can increase the structural strength of the L-shaped frame 1. At the same time, the placement plate 2 is also hinged to the reinforcing ribs 4, which increases the stability of the placement plate 2 and improves its load-bearing capacity.

[0034] The multi-layer placement board 2 is hingedly arranged on the L-shaped frame 1. The placement board 2 can be turned over here to facilitate material placement.

[0035] A tension spring 5 is installed between the placement plate 2 and the L-shaped frame 1. After the plate 2 is flipped, the tension spring 5 limits the placement plate 2's position, preventing it from descending and requiring manual force. One end of the tension spring 5 is attached to the placement plate 2, and the other end is attached to a screw. The screw threadedly engages the L-shaped frame 1, allowing the tension of the tension spring 5 to be adjusted.

[0036] Reinforced support angles 6 are provided between the placement plates 2, and support columns 7 are provided on the reinforced support angles 6. The layers are connected by the support columns 7, which improves the bearing capacity of the placement plates 2.

[0037] A slide 21 is provided on the placement plate 2, and the fluorescent ultraviolet lamp is slidably provided on the slide 21. The fluorescent ultraviolet lamp includes a bracket body 31 and a lamp body 32 provided on the bracket body 31, and the bracket body 31 slides with the slide 21. The use of a slidable fluorescent ultraviolet lamp can fully cover the upper surface of the product to facilitate its detection. It should be noted here that the slide 21 can be omitted here, and the fluorescent ultraviolet lamp can be fixed on the upper placement plate 2. Since the cost of this design is too high, a handheld fluorescent ultraviolet lamp can also be used, and the fluorescent ultraviolet lamp can be hung on the L-shaped frame 1 when not in use. The sliding design adopted here is a detachable slide, which is convenient for detecting each layer of materials. The placement plate 2 is a flat structure or a mesh structure, which can be selected according to actual use requirements.

[0038] The bottom of the L-shaped frame 1 is provided with universal wheels 8. The universal wheels 8 are used to facilitate the movement of the frame.

[0039] When the utility model is in use, the three-proof paint with ultraviolet tracer is adopted, and the coating condition can be displayed by irradiating with a fluorescent ultraviolet lamp, so as to realize the detection of the coating quality of the three-proof paint.

[0040] After coating, it is placed on the frame, specifically: flip the placement plate 2 upwards, and place the PCB boards coated with three-proof paint in sequence from the bottom placement plate 2 upwards. After placing one layer, install the fluorescent ultraviolet lamp on the slide 21 to perform surface inspection. The user can take out the PCB with poor coating quality, re-coat it or dispose of it as waste, and place the materials layer by layer and inspect it until all the inspections are completed. Furthermore, in order to improve the use effect and facilitate the user to place the materials, a lifting mechanism can be set at the bottom of the L-shaped frame 1. The lifting mechanism uses a jack (hydraulic or screw) to lift the L-shaped frame 1 through the jack, making it convenient for the user to place materials and inspect.

[0041] After placement and inspection, the material can be removed. Because the paint will flow during the drying process, the fluorescent UV lamp is again installed on the slideway 21 to perform surface inspection. Once all the material has been removed, any unsatisfactory coating material can be discarded. To avoid interference from electrical wiring, the fluorescent UV lamp is rechargeable and automatically powered for convenient operation.

[0042] The utility model uses a conformal coating with fluorescent tracer marks to coat the PCB board with conformal coating. By placing the PCB board flat, the conformal coating solution on the PCB board surface can be effectively prevented from flowing, causing quality problems such as uneven thickness or overflowing into other electrical components that do not require conformal coating.

[0043] The above is only an embodiment of the present invention, and common knowledge such as the specific structure and characteristics of the scheme are not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claim involved.

Claims

1. A device suitable for detecting the quality of three-conformal coating on PCB boards, characterized in that: It comprises an L-shaped frame (1) and a placement plate (2) arranged on the L-shaped frame (1), wherein a fluorescent ultraviolet lamp is arranged on the placement plate (2); A slideway (21) is provided on the placement plate (2), and the fluorescent ultraviolet lamp is slidably provided on the slideway (21). The fluorescent ultraviolet lamp comprises a bracket body (31) and a lamp body (32) provided on the bracket body (31), and the bracket body (31) is slidably matched with the slideway (21).

2. The device for detecting the quality of conformal coating on PCBs according to claim 1, characterized in that: The L-shaped frame (1) is provided with reinforcement ribs (4).

3. The device for detecting the quality of conformal coating on PCBs according to claim 1 or 2, characterized in that: The multiple layers of placement plates (2) are hingedly arranged on the L-shaped frame (1).

4. The device for detecting the quality of conformal coating on PCBs according to claim 3, characterized in that: A tension spring (5) is provided between the placement plate (2) and the L-shaped frame (1).

5. The device for detecting the quality of conformal coating on PCBs according to claim 3, characterized in that: Reinforced support angles (6) are provided between the placement plates (2), and support columns (7) are provided on the reinforced support angles (6).

6. The device for detecting the quality of conformal coating on PCBs according to claim 3, characterized in that: Universal movable wheels (8) are provided at the bottom of the L-shaped frame (1).

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