Rapid detection device for PCB (Printed Circuit Board)

Abstract

The utility model discloses a PCB (printed circuit board) rapid detection device, which is characterized in that a shading cover is matched with a detection base to form a darkroom, and a light source and a photosensitive sensor are respectively arranged in the detection base and on the shading cover; when the PCB is welded, pins which are not filled with soldering tin or not completely welded on the PCB leak light, light leakage can trigger a photosensitive sensor, and therefore it is judged that welding of the PCB has a problem, a first detection base and a second detection base are arranged to be matched with a light shield, and when the light shield is matched with one of the detection bases for detection, the light shield is matched with the other detection base to conduct detection. When one detection base is in an exposed state, the other detection base is in an exposed state, at the moment, a worker can carry out feeding and discharging operation on the detection base, after the light shield is matched with one detection base for detection, the light shield can be switched to the other detection base at the first time to be detected again, efficiency is improved, and waiting time is shortened.

Description

[Technical Field]

[0001] This utility model relates to the technical field of PCB boards, and in particular to a rapid testing device for PCB boards. [Background Technology]

[0002] Since the invention of the first printed circuit board (PCB), it has held a dominant position in the electronics industry. A PCB, also known as a circuit board, is a carrier for integrating electronic components and is widely used in modern electrical equipment. After production, PCBs typically undergo various tests, among which the testing of the solder joint strength of component pins is particularly important. If the component pins are not soldered firmly, the components on the PCB are prone to loosening and breakage during later use, affecting their lifespan. A key factor affecting the solder joint strength is whether the corresponding pin holes on the PCB are filled with solder. Unfilled holes generally indicate a weak solder joint. Currently, due to a lack of relevant equipment, the solder joint strength of component pins on PCBs is usually tested by direct visual inspection. However, the pins on PCBs are typically quite small, making visual inspection inconvenient, causing eye fatigue over time, and increasing the likelihood of errors, thus affecting the convenience and accuracy of the test. [Utility Model Content]

[0003] The purpose of this invention is to solve the problems in the prior art and to propose a rapid PCB board testing device that can conveniently detect whether the pins on the PCB board are firmly soldered.

[0004] To achieve the above objectives, this utility model proposes a rapid PCB board inspection device, including a frame and an inspection device mounted on the frame. The inspection device includes a light shield and a first inspection base and a second inspection base respectively disposed on both sides of the light shield. The light shield is used to cooperate with the first inspection base and the second inspection base to form a dark chamber. Both the first inspection base and the second inspection base are provided with PCB board inspection placement positions with their openings facing upwards. A device cavity is provided below the PCB board inspection placement position. A light source and a photosensitive sensor are respectively disposed in the device cavity and the light shield. The frame is also provided with a switching mechanism for driving the light shield to reciprocate between the first inspection base and the second inspection base.

[0005] Preferably, the switching mechanism includes a first arm located on the side of the light shield and a second arm arranged parallel to the first arm. The two ends of the first arm and the second arm are respectively hinged to the side wall of the light shield and the side wall of the frame. Each arm is provided with a flipping motor for driving it to reciprocate around the hinge position.

[0006] Preferably, the first detection base and the second detection base have the same structure, both including a main body and an upper mold disposed on the main body and detachably connected to the main body, the PCB board detection placement position is disposed on the upper mold, and the equipment cavity is disposed in the main body.

[0007] Preferably, the PCB board detection placement position is provided with an upward-facing lifting mechanism on one side.

[0008] Preferably, the PCB board detection placement position is further provided with a detection sensor for detecting whether a PCB board is placed on its upper side, and the detection sensor is a proximity sensor or a pressure sensor.

[0009] Preferably, the PCB board detection placement position is provided with a plurality of negative pressure holes, the input end of the negative pressure holes is connected to a negative pressure source, and the surface of the PCB board detection placement position is provided with an elastic pad.

[0010] Preferably, the device cavity is also equipped with a detection camera.

[0011] The beneficial effects of this utility model's rapid PCB board inspection device are as follows: This utility model uses a light shield and an inspection base to form a dark chamber. A light source and a photosensitive sensor are respectively installed inside the inspection base and on the light shield. When the light source shines on the PCB board placed in the inspection position, light leakage occurs on pins that are not fully soldered or not completely soldered. This light leakage triggers the photosensitive sensor, thus determining that there is a problem with the PCB board's soldering. It is highly efficient and automated, requiring no human observation, reducing manual labor intensity. The device consists of two inspection bases (a first inspection base and a second inspection base) working in conjunction with a light shield. When the light shield is used with one inspection base for inspection, the other inspection base is exposed, allowing for loading and unloading operations. After inspection with one inspection base is completed, the light shield can be immediately switched to the other inspection base for further inspection, improving efficiency and reducing waiting time.

[0012] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. [Attached Image Description]

[0013] Figure 1 This is a schematic diagram of the main structure of a PCB board rapid testing device according to this utility model.

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the detection base of a PCB board rapid detection device according to this utility model.

[0015] Figure 3This is a top view of the detection base of a PCB board rapid detection device according to this utility model.

[0016] Figure 4 This is a schematic diagram of the lower view of the light shield structure of a PCB board rapid testing device according to this utility model.

[0017] In the diagram: 1-Frame, 2-Light shield, 3-First detection base, 4-Second detection base, 5-Light source, 6-Photosensitive sensor, 7-First support arm, 8-Second support arm, 9-Detection camera, 10-Flip motor, 101-PCB board detection placement position, 102-Equipment cavity, 103-Main body, 104-Upper mold, 105-Lifting mechanism, 106-Detection sensor, 1011-Negative pressure hole.

Detailed Implementation Methods

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0019] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0020] In the description of this utility model, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1:

[0023] See Figure 1 This utility model discloses a rapid PCB board inspection device, including a frame 1 for support. An inspection device is mounted on the frame 1. Specifically, the inspection device includes a light shield 2, a first inspection base 3, and a second inspection base 4 respectively disposed on both sides of the light shield 2. The light shield 2 is used to cooperate with the first inspection base 3 and the second inspection base 4 to form a dark chamber. (See reference...) Figure 2 , Figure 3 and Figure 4 Both the first detection base 3 and the second detection base 4 are provided with PCB board detection placement positions 101 with their openings facing upwards. A device cavity 102 is provided on the lower side of the PCB board detection placement position 101. A light source 5 and a photosensitive sensor 6 are respectively provided in the device cavity 102 and the light shield 2. In this embodiment, a dark chamber is formed by the cooperation of the light shield 2 and the detection base. The light source 5 and the photosensitive sensor 6 are respectively provided in the detection base and on the light shield. When the light source 5 shines on the PCB board placed on the PCB board detection placement position 101, the pins on the PCB board that are not filled with solder or are not fully soldered will produce light leakage. The light leakage can trigger the photosensitive sensor 6, thereby judging that there is a problem with the soldering of the PCB board. It is highly efficient, highly automated, and does not require human observation, thus reducing the intensity of manual labor.

[0024] It should be noted that in this embodiment, only one PCB board detection placement position 101 and one equipment cavity 102 are provided on the first detection base 3 and the second detection base 4. However, in specific implementation, multiple PCB board detection placement positions 101 and equipment cavities 102 can be set on the first detection base 3 and the second detection base 4 according to actual needs, so as to detect multiple PCB boards at one time, thereby improving detection efficiency.

[0025] See Figure 1The frame 1 is also equipped with a switching mechanism for driving the light shield 2 to reciprocate between the first detection base 3 and the second detection base 4. In this embodiment, two detection bases, the first detection base 3 and the second detection base 4, cooperate with one light shield 2. When the light shield 2 is used with one of the detection bases for testing, the other detection base is exposed, allowing operators to load and unload materials. After testing with one detection base, the light shield 2 can be immediately switched to the other detection base for further testing, improving efficiency and reducing waiting time.

[0026] See Figure 1 The switching mechanism includes a first arm 7 located on the side of the light shield 2 and a second arm 8 arranged parallel to the first arm 7. The two ends of the first arm 7 and the second arm 8 are respectively hinged to the side wall of the light shield 2 and the side wall of the frame 1. Each arm is equipped with a flip motor 10 for driving it to reciprocate around the hinge position. When the flip motor 10 drives the arm to flip, it can drive the light shield 2 to flip together, thereby switching between the first detection base 3 and the second detection base 4.

[0027] See Figure 2 A camera 8 is also provided next to the photosensitive sensor 6.

[0028] See Figure 2 , Figure 3 and Figure 4 The first detection base 3 and the second detection base 4 have the same structure, both including a main body 103 and an upper mold 104 disposed on and detachably connected to the main body 103. The PCB board detection placement position 101 is disposed on the upper mold 104, and the equipment cavity 102 is disposed inside the main body 103. Different upper molds 104 are provided with different PCB board detection placement positions 101, which can be used to cooperate with various different PCB boards, and different upper molds 104 can be replaced according to different PCB boards.

[0029] Example 2:

[0030] See Figure 2 , Figure 3 Based on Embodiment 1, in order to facilitate the removal of the PCB board placed on the PCB board detection placement position 101, a lifting mechanism 105 facing upward is provided on one side of the PCB board detection placement position 101. After the detection is completed, the lifting mechanism 105 can automatically lift upward, thereby lifting one side of the PCB board, making it convenient for the staff to remove the PCB board.

[0031] Preferably, the lifting mechanism 105 is a lifting cylinder.

[0032] See Figure 3 The PCB board detection placement position 101 is also provided with a detection sensor 106 for detecting whether a PCB board is placed on its upper side.

[0033] Preferably, the detection sensor 106 is a proximity sensor or a pressure sensor.

[0034] See Figure 2 , Figure 3 The PCB board detection placement position 101 is provided with a plurality of negative pressure holes 1011. The input end of the negative pressure hole 1011 is connected to a negative pressure source, and the surface of the PCB board detection placement position 101 is provided with an elastic pad. The negative pressure holes 1011 are used to cooperate with the PCB board. When the PCB board is placed on the PCB board detection placement position 101, the negative pressure holes 1011 can firmly adsorb the PCB board onto the PCB board detection placement position 101 through negative pressure, and cooperate with the elastic pad to prevent light leakage at the contact point between the PCB board and the PCB board detection placement position 101.

[0035] See Figure 2 The device cavity 102 is also equipped with a detection camera 9, and the frame 1 is also equipped with a human-machine interface corresponding to the detection camera 9, which is used to display the image collected by the photosensitive sensor 6. The detection camera 9 can be used to collect the image when the PCB board is being inspected, so as to locate the position of the light leakage point through the image.

[0036] The working process of this utility model:

[0037] This utility model discloses a rapid PCB board inspection device. During operation, a dark chamber is formed by setting up a light shield 2 in conjunction with an inspection base. A light source 5 and a photosensitive sensor are respectively set inside the inspection base and on the light shield. When the light source 5 shines on the PCB board placed on the PCB board inspection placement position 101, the pins on the PCB board that are not filled with solder or are not fully soldered will produce light leakage. The light leakage can trigger the photosensitive sensor, thereby determining that there is a problem with the soldering of the PCB board. It is highly efficient, highly automated, and does not require human observation, thus reducing the intensity of manual labor.

[0038] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The internal components of the electric slide rail, cylinder, welding machine, electric telescopic rod and controller all adopt conventional models in the existing technology, and their internal structure belongs to the existing technology structure. Workers can complete the normal operation of them according to the existing technical manual. In addition, the circuit connection adopts the conventional connection method in the existing technology, and will not be described in detail here.

[0039] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. A rapid PCB board inspection device, comprising a frame (1) and an inspection device disposed on the frame (1), characterized in that: The detection device includes a light shield (2), a first detection base (3) and a second detection base (4) respectively disposed on both sides of the light shield (2). The light shield (2) is used to cooperate with the first detection base (3) and the second detection base (4) to form a dark chamber. The first detection base (3) and the second detection base (4) are each provided with an upward-facing PCB board detection placement position (101). A device cavity (102) is provided under the PCB board detection placement position (101). A light source (5) and a photosensitive sensor (6) are respectively provided in the device cavity (102) and the light shield (2). The frame (1) is also provided with a switching mechanism for driving the light shield (2) to reciprocate between the first detection base (3) and the second detection base (4).

2. The PCB board rapid testing device as described in claim 1, characterized in that: The switching mechanism includes a first arm (7) located on the side of the light shield (2) and a second arm (8) arranged parallel to the first arm (7). The two ends of the first arm (7) and the second arm (8) are respectively hinged to the side wall of the light shield (2) and the side wall of the frame (1). Each arm is provided with a flipping motor (10) for driving it to reciprocate around the hinge position.

3. The PCB board rapid testing device as described in claim 1, characterized in that: The first detection base (3) and the second detection base (4) have the same structure, both including a main body (103) and an upper mold (104) disposed on the main body (103) and detachably connected to the main body (103). The PCB board detection placement position (101) is disposed on the upper mold (104), and the equipment cavity (102) is disposed inside the main body (103).

4. The PCB board rapid testing device as described in claim 1, characterized in that: The PCB board detection placement position (101) is provided with an upward-facing lifting mechanism (105) on one side.

5. The PCB board rapid testing device as described in claim 4, characterized in that: The PCB board detection placement position (101) is also provided with a detection sensor (106) for detecting whether a PCB board is placed on its upper side. The detection sensor (106) is a proximity sensor or a pressure sensor.

6. The PCB board rapid testing device as described in claim 1, characterized in that: The PCB board detection placement position (101) is provided with a plurality of negative pressure holes (1011), the input end of the negative pressure hole (1011) is connected to a negative pressure source, and the surface of the PCB board detection placement position (101) is provided with an elastic pad.

7. The PCB board rapid testing device as described in claim 1, characterized in that: The device cavity (102) is also equipped with a detection camera (9).

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