Circuit board chamfer rapid inspection method and auxiliary jig

Abstract

The invention discloses a circuit board chamfer rapid inspection method and an auxiliary jig, and the method comprises the following steps: providing the auxiliary jig, horizontally placing the auxiliary jig on a detection table, and forming a plurality of slots in the auxiliary jig; a circuit board is placed, the circuit board is inserted into the slot of the auxiliary jig, one end of the circuit board is provided with a chamfer, and the circuit board is vertically inserted into the auxiliary jig, so that the length direction of the chamfer at one end of the circuit board extends in the vertical direction; and inspecting the circuit board, namely inspecting the chamfer at one end of the circuit board by using inspection equipment so as to identify the condition of the chamfer of the circuit board. When the circuit board is inserted into the slot of the auxiliary jig, the circuit board can be fixed, so that the length direction of the chamfer at one end of the circuit board extends along the vertical direction, and the cross section of the chamfer can be presented below the inspection equipment, so that the inspection equipment can conveniently and quickly inspect the chamfer of the circuit board, and the inspection efficiency is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of printed circuit board manufacturing processes, and particularly to a method for quickly inspecting chamfers of printed circuit boards and an auxiliary fixture. Background Art

[0002] In PCB processing, chamfering is an important process used for plugging and unplugging after SMT assembly of circuit boards. However, currently, for the detection of problems related to depth (such as the depth inside holes, chamfers / blind slots), there is a lack of automatic inspection equipment, mainly relying on manual adjustment of the lens height for three-dimensional inspection, resulting in low efficiency. Especially for thin and small PCB boards, the chamfers are almost invisible to the naked eye and need to be inspected under a video microscope, increasing the inspection difficulty. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a method for quickly inspecting chamfers of printed circuit boards, which can quickly inspect the chamfer situation on the printed circuit board, thereby improving production efficiency.

[0004] A second aspect embodiment of the present invention also proposes an auxiliary fixture applied to the method for quickly inspecting chamfers of printed circuit boards proposed in the first aspect above.

[0005] According to the method for quickly inspecting chamfers of printed circuit boards according to an embodiment of the present invention, the method for quickly inspecting chamfers of printed circuit boards includes the following steps: Provide an auxiliary fixture, the auxiliary fixture is horizontally placed on the inspection table, and a plurality of slots are opened on the auxiliary fixture; Place the printed circuit board, insert the printed circuit board into the slots of the auxiliary fixture, one end of the printed circuit board is provided with a chamfer, and the printed circuit board is vertically inserted into the auxiliary fixture so that the length direction of the chamfer at one end of the printed circuit board extends in the vertical direction; and Inspect the printed circuit board, and use inspection equipment to inspect the chamfer at one end of the printed circuit board to identify the chamfer situation of the printed circuit board.

[0006] According to the method for quickly inspecting chamfers of printed circuit boards according to an embodiment of the present invention, it has at least the following beneficial effects: inserting the printed circuit board into the slots of the auxiliary fixture can fix the printed circuit board, so that the length direction of the chamfer at one end of the printed circuit board extends in the vertical direction, and the cross-section of the chamfer can be presented below the inspection equipment, thereby facilitating the inspection equipment to quickly inspect the chamfer of the printed circuit board, and further improving the inspection efficiency.

[0007] According to some embodiments of the present invention, the auxiliary fixture includes a mounting plate, the mounting plate is provided with the slots, and there are a plurality of the slots, and the plurality of slots are arranged in an array on the auxiliary fixture.

[0008] According to some embodiments of the present invention, the auxiliary jig further includes a protective pad, the protective pad is attached to one side of the mounting plate, the thickness of the protective pad is greater than the thickness of the mounting plate, the protective pad is provided with a mounting groove corresponding to the position of the slot, and the mounting groove is used to accommodate the circuit board.

[0009] According to some embodiments of the present invention, the protective pad is made of sponge.

[0010] According to some embodiments of the present invention, the width of the slot of the auxiliary jig is greater than the thickness of a single circuit board, and the slot can accommodate more than one circuit board.

[0011] According to some embodiments of the present invention, the thickness of the circuit board is 0.4 mm.

[0012] According to some embodiments of the present invention, the length dimension of the circuit board is less than or equal to 15 mm.

[0013] According to some embodiments of the present invention, the inspection device is a video microscope.

[0014] The auxiliary jig according to the embodiment of the second aspect of the present invention is applied to the circuit board chamfer rapid inspection method described in any one of the above-mentioned first aspects.

[0015] The auxiliary jig according to the embodiment of the second aspect of the present invention has at least the following beneficial effects: the auxiliary jig is applied to the circuit board chamfer rapid inspection method described in the embodiment of the first aspect, which can facilitate the inspection device to inspect the chamfer of the circuit board, thereby improving the inspection efficiency.

[0016] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the drawings and embodiments, where: Figure 1 is a schematic structural diagram of a circuit board according to an embodiment of the present invention; Figure 2 is a schematic structural diagram of an auxiliary jig according to an embodiment of the present invention.

[0018] Reference numerals in the drawings: circuit board 1; chamfer 2; auxiliary jig 3; mounting plate 4; slot 5; protective plate 6. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0020] In the description of the present invention, if the first and second are described only for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0021] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0022] Referring to Figures 1 to 2 , according to the method for quickly inspecting the chamfer 2 of the circuit board 1 according to the embodiment of the present invention, the method for quickly inspecting the chamfer 2 of the circuit board 1 includes the following steps: Provide an auxiliary jig 3. The auxiliary jig 3 is horizontally placed on the inspection table, and a plurality of slots 5 are opened on the auxiliary jig 3; Place the circuit board 1. Insert the circuit board 1 into the slot 5 of the auxiliary jig 3. One end of the circuit board 1 is provided with a chamfer 2. The circuit board 1 is vertically inserted into the auxiliary jig 3 so that the length direction of the chamfer 2 at one end of the circuit board 1 extends along the vertical direction; and Inspect the circuit board 1. Use an inspection device (not shown in the figure) to inspect the chamfer 2 at one end of the circuit board 1 to identify the situation of the chamfer 2 of the circuit board 1.

[0023] The method for quickly inspecting the chamfer 2 of the circuit board 1 proposed by the present invention greatly improves the efficiency and accuracy of inspecting the chamfer 2 of the circuit board 1 by providing a specially designed auxiliary jig 3. The design of the slots 5 on the auxiliary jig 3 enables the circuit board 1 to be stably and vertically inserted therein, ensuring the consistent positioning of the chamfer 2 during the inspection process and avoiding inspection errors caused by the unstable placement or angular deviation of the circuit board 1. In addition, this method extends the length direction of the chamfer 2 of the circuit board 1 along the vertical direction, facilitating the inspection device to conduct a comprehensive and unobstructed inspection of the chamfer 2, so as to accurately identify the shape, size and whether there are defects of the chamfer 2. This inspection method not only simplifies the inspection process, reduces the inconvenience of manual operation, but also greatly improves the reliability and efficiency of the inspection, providing a strong guarantee for the production and quality control of the circuit board 1.

[0024] Specifically, in a specific embodiment of the present invention, first, an auxiliary jig 3 is prepared. The auxiliary jig 3 is made of a durable and stable material, such as metal or hard plastic, to ensure its reliability and durability during use. The auxiliary jig 3 is horizontally placed on the inspection table, and a number of slots 5 are opened thereon. The sizes and shapes of these slots 5 are adapted to the circuit board 1 to be inspected, so that the circuit board 1 can be stably inserted therein. Next, the circuit board 1 is placed. The circuit boards 1 are inserted into the slots 5 of the auxiliary jig 3 one by one, ensuring that the circuit board 1 stands vertically and stably in the slot 5. One end of the circuit board 1 is provided with a chamfer 2. During the insertion process, the position of the circuit board 1 is adjusted so that the length direction of the chamfer 2 at one end extends along the vertical direction. Such a setting method helps the inspection device to accurately and comprehensively inspect the chamfer 2. Finally, the circuit board 1 is inspected. Using a special inspection device, such as an optical detector or a laser measuring instrument, etc., the chamfer 2 at one end of the circuit board 1 is inspected. The inspection device can identify the shape, size of the chamfer 2 and whether there are defects such as cracks and burrs. Through the precise measurement and intelligent recognition functions of the inspection device, the inspection of the chamfer 2 of the circuit board 1 can be quickly completed, and the inspection result can be output for reference and decision-making in subsequent production and quality control processes. In summary, the fast inspection method for the chamfer 2 of the circuit board 1 of the present invention realizes the efficient and accurate inspection of the chamfer 2 of the circuit board 1 by providing steps such as an auxiliary jig 3, stably placing the circuit board 1, and using an inspection device for inspection, providing strong technical support for the production and quality control of the circuit board 1.

[0025] Therefore, it can be understood that the fast inspection method for the chamfer 2 of the circuit board 1 according to the embodiment of the present invention has at least the following beneficial effects: inserting the circuit board 1 into the slot 5 of the auxiliary jig 3 can fix the circuit board 1, so that the length direction of the chamfer 2 at one end of the circuit board 1 extends along the vertical direction, and thus the cross section of the chamfer 2 can be presented below the inspection device, facilitating the inspection device to quickly inspect the chamfer 2 of the circuit board 1, thereby improving the inspection efficiency.

[0026] Refer to Figure 2, in some embodiments of the present invention, the auxiliary jig 3 includes a mounting plate 4. The mounting plate 4 is provided with slots 5, and there are multiple slots 5. The multiple slots 5 are arranged in an array on the auxiliary jig 3. In a further embodiment of the present invention, the design of the auxiliary jig 3 is optimized to better meet the rapid inspection requirements for chamfering 2 of large-scale circuit boards 1. Specifically, the auxiliary jig 3 includes a mounting plate 4, which serves as a carrier for the slots 5 and provides a stable support for the circuit board 1. On the mounting plate 4, there are multiple slots 5. These slots 5 are not only numerous to meet the need for inspecting multiple circuit boards 1 at one time, but also arranged in an array on the auxiliary jig 3. The array arrangement of the slots 5 enables the circuit board 1 to be placed neatly and orderly, facilitating the rapid scanning and identification by the inspection equipment. At the same time, this design also improves the automation level of the inspection process and reduces the cumbersome and inconvenient manual operations. In practical applications, the number and array layout of the slots 5 can be flexibly adjusted according to the size and shape of the circuit board 1 and the working range of the inspection equipment to achieve the best inspection effect and efficiency.

[0027] Furthermore, referring to Figure 2 , in some embodiments of the present invention, the auxiliary jig 3 further includes a protective pad. The protective pad is attached to one side of the mounting plate 4. The thickness of the protective pad is greater than that of the mounting plate 4. The protective pad is provided with mounting grooves (not shown in the figure) corresponding to the positions of the slots 5, and the mounting grooves are used to accommodate the circuit board 1.

[0028] In a further refined embodiment of the present invention, in order to enhance the practicality and protection of the auxiliary jig 3, a protective pad is particularly designed and added to the auxiliary jig 3. Specifically, the auxiliary jig 3 not only includes a mounting plate 4 provided with multiple slots 5, but also has a layer of protective pad attached to one side of the mounting plate 4. The material of this layer of protective pad is selected to have softness, wear resistance and certain elasticity, such as silicone or rubber, etc., to ensure that the circuit board 1 will not be damaged during the inspection process. The thickness of the protective pad is designed to be greater than that of the mounting plate 4. Such a design not only increases the overall stability of the auxiliary jig 3, but also provides a certain buffering effect when the circuit board 1 is inserted, reducing the direct collision and friction between the circuit board 1 and the mounting plate 4. More importantly, mounting grooves are provided at the positions of the protective pad corresponding to the slots 5, and these mounting grooves correspond to the slots 5 on the mounting plate 4 one by one and are used to accommodate the circuit board 1.

[0029] In practical applications, when the circuit board 1 is inserted into the slots 5 of the auxiliary jig 3, it is actually first inserted into the mounting grooves of the protective pad and then guided and fixed in the slots 5 of the circuit board 1 by the mounting grooves. This design not only protects the surface of the circuit board 1 from being scratched, but also ensures the stability and accuracy of the circuit board 1 in the slots 5, providing a reliable guarantee for the subsequent inspection work.

[0030] In some embodiments of the present invention, the protective pad is made of sponge. As a porous elastic material, sponge has good softness, shock absorption and wear resistance, and is very suitable for making the protective pad in the present invention. In practical applications, the sponge protective pad is closely attached to one side of the mounting plate 4, and a mounting groove is accurately opened corresponding to the position of the slot 5. When the circuit board 1 is inserted into the auxiliary jig 3, the softness and elasticity of the sponge protective pad can effectively buffer the collision between the circuit board 1 and the mounting plate 4, avoiding scratches or damage to the surface of the circuit board 1. At the same time, the sponge material also has certain shock absorption properties, which can absorb part of the impact force during the insertion process of the circuit board 1, further protecting the integrity of the circuit board 1.

[0031] In some embodiments of the present invention, the width of the slot 5 of the auxiliary jig 3 is greater than the thickness of a single circuit board 1, and the slot 5 can accommodate more than one circuit board 1. In another specific embodiment of the present invention, we optimized the design of the slot 5 of the auxiliary jig 3 to improve its applicability and flexibility. Specifically, the width of the slot 5 on the auxiliary jig 3 is designed to be greater than the thickness of a single circuit board 1. Such a design enables each slot 5 to not only accommodate one circuit board 1, but also have a certain margin.

[0032] In practical applications, this design allows users to insert multiple circuit boards 1 with similar thicknesses or slightly smaller than the width of the slot 5 into the same slot 5 at the same time. This is particularly useful for the case where it is necessary to batch-inspect the chamfers 2 of the circuit boards 1, because users can place multiple circuit boards 1 on the auxiliary jig 3 at one time, greatly saving the time for placing and replacing the circuit boards 1 and improving the inspection efficiency. At the same time, the width design of the slot 5 also takes into account the possible minor dimensional differences of the circuit boards 1. Due to manufacturing tolerances in the production process, the thicknesses of different circuit boards 1 may vary slightly. By designing a slot 5 with a slightly larger width, it can be ensured that even if there are minor differences in the thickness of the circuit boards 1, they can be smoothly inserted into the slot 5 without causing jams or damage during the inspection process due to dimensional problems. Therefore, by optimizing the width design of the slot 5 of the auxiliary jig 3, the rapid inspection method for the chamfers 2 of the circuit boards 1 is made more flexible and efficient, capable of adapting to the inspection requirements of different quantities and sizes of circuit boards 1, and providing a more convenient and reliable solution for the production and quality control of circuit boards 1.

[0033] In some embodiments of the present invention, the thickness of the circuit board 1 is 0.4 mm. Specifically, the thickness of the circuit board 1 used in this embodiment is 0.4 mm. The choice of 0.4 mm as the thickness of the circuit board 1 is based on the common specifications of circuit boards 1 in the current electronics industry and the adaptability of inspection equipment. This thickness not only ensures the structural strength of the circuit board 1, but also can be stably inserted into the slot 5 of the auxiliary jig 3 without shaking or deforming due to being too thin, which affects the accuracy of inspection.

[0034] Furthermore, in some embodiments of the present invention, the length dimension of the circuit board 1 is less than or equal to 15 mm. Specifically, the length dimension of the circuit board 1 adopted in this embodiment is set to be less than or equal to 15 mm. First of all, the 15-mm length dimension meets the requirements of most small electronic components for the size of the circuit board 1, enabling the inspection method of the present invention to be widely applied to the production process of various electronic products. Secondly, the smaller size of the circuit board 1 facilitates quick and accurate insertion and positioning in the slot 5 of the auxiliary jig 3, reducing problems such as difficult insertion or inaccurate positioning caused by too large a size.

[0035] In some embodiments of the present invention, the inspection device is a video microscope. A video microscope is a detection device integrating a high-definition camera and microscope functions. It can magnify the tiny details of the chamfer 2 of the circuit board 1 to a clearly visible level and display them to the operator in real time through a display screen. This device not only has high resolution and high magnification, but also can provide clear images and color restoration, enabling the operator to accurately identify the shape, size, and whether there are defects of the chamfer 2 of the circuit board 1. During the actual inspection process, the operator only needs to insert the circuit board 1 on the auxiliary jig 3 and align the lens of the video microscope with the chamfer 2 area of the circuit board 1. By adjusting the magnification and focal length of the microscope, the operator can clearly observe every detail of the chamfer 2, thereby accurately evaluating the quality of the chamfer 2.

[0036] Referring to Figure 2 , the auxiliary jig 3 according to the embodiment of the second aspect of the present invention is applied to the fast inspection method for the chamfer 2 of the circuit board 1 in any one of the above first aspect embodiments. The application of the auxiliary jig 3 to the fast inspection method for the chamfer 2 of the circuit board 1 in the above first aspect embodiments can facilitate the inspection device to inspect the chamfer 2 of the circuit board 1, thereby improving the inspection efficiency. Specifically, the auxiliary jig 3 is designed with precise slots 5 for stably fixing the circuit board 1. The size and shape of the slots 5 match those of the circuit board 1, ensuring that the circuit board 1 can be accurately positioned during the insertion process without affecting the inspection result due to shaking or offset. At the same time, the material selection of the auxiliary jig 3 has also been carefully considered, ensuring both sufficient strength and stability and avoiding any damage to the circuit board 1 during the inspection process. In addition, the auxiliary jig 3 may also be equipped with accessories such as protective pads to further protect the circuit board 1 and improve the comfort of the inspection. The material of the protective pad is soft and wear-resistant, providing a layer of cushioning between the circuit board 1 and the auxiliary jig 3 to reduce the impact of friction and collision on the circuit board 1.

[0037] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0038] Certainly, the present invention is not limited to the above embodiments. Those skilled in the art can also make equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A rapid inspection method for chamfering of a circuit board, characterized in that, It includes the following steps: Provide an auxiliary jig: The auxiliary jig is horizontally placed on the inspection table, and a plurality of slots are opened on the auxiliary jig; Place the circuit board: Insert the circuit board into the slots of the auxiliary jig. One end of the circuit board is provided with a chamfer, and the circuit board is vertically inserted into the auxiliary jig so that the length direction of the chamfer at one end of the circuit board extends along the vertical direction; and Inspect the circuit board: Use inspection equipment to inspect the chamfer at one end of the circuit board to identify the situation of the chamfer of the circuit board.

2. The rapid inspection method for chamfering of a circuit board according to claim 1, wherein The auxiliary jig includes a mounting plate, and the mounting plate is provided with the slots. There are a plurality of the slots, and the plurality of slots are arranged in an array on the auxiliary jig.

3. The rapid inspection method for chamfering of a circuit board according to claim 2, characterized in that, The auxiliary jig further includes a protective pad. The protective pad is attached to one side of the mounting plate. The thickness of the protective pad is greater than the thickness of the mounting plate. The protective pad is provided with mounting grooves corresponding to the slots, and the mounting grooves are used to accommodate the circuit board.

4. The rapid inspection method for chamfering of a circuit board according to claim 3, characterized in that, The protective pad is made of sponge.

5. The rapid inspection method for chamfering of a circuit board according to claim 1, wherein The width of the slot of the auxiliary jig is greater than the thickness of a single circuit board, and the slot can accommodate more than one circuit board.

6. The rapid inspection method for chamfering of a circuit board according to claim 5, characterized in that, The thickness of the circuit board is 0.4 mm.

7. The rapid inspection method for chamfering of a circuit board according to claim 5, wherein The length dimension of the circuit board is less than or equal to 15 mm.

8. The quick inspection method for chamfering of a circuit board according to claim 1, wherein The inspection equipment is a video microscope.

9. An auxiliary jig, characterized in that Applied to the circuit board chamfer rapid inspection method according to any one of claims 1 to 8.

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