FPC transparent reinforcing missed pasting detection device

Abstract

The utility model discloses a kind of FPC transparent reinforcing missed pasting detection devices, which can avoid missed detection of FPC transparent reinforcing missed pasting detection devices caused by visual fatigue. The utility model is used for the missed pasting detection of FPC reinforcing plate, two detection windows are opened in the first side surface of FPC, a connecting circuit is provided between the two detection windows, the first side surface of FPC is used for pasting transparent reinforcing plate, the four peripheral edges of transparent reinforcing plate are located within the four peripheral edge range of FPC, and the FPC transparent reinforcing missed pasting detection device comprises a resistance detection device and two probes, the two probes are electrically connected with the resistance detection device, a loop is formed between the two probes and the resistance detection device when the two probes are short-circuited, and the probe is used for aligned insertion into the detection window for missed pasting detection.

Description

Technical Field

[0001] This utility model relates to the field of FPC production technology, and in particular to an FPC transparent reinforcement leak detection device. Background Technology

[0002] Flexible printed circuit boards (FPCs) are characterized by their thinness and lightness, making them prone to folding and twisting during use. They also have low mechanical strength and are easily damaged. In FPC production, local or overall reinforcement is often necessary, increasing local thickness or hardness to facilitate component assembly and reduce the defect rate caused by component pin breakage due to bending during operation. Currently, the main reinforcing materials include polyimide (PI), epoxy glass cloth laminate (FR4), or metal reinforcement such as steel or aluminum sheets. However, these are primarily planar reinforcing materials. When using epoxy glass cloth laminate (FR4) as a reinforcing board, its transparent nature often leads to missed reinforcement due to visual fatigue, resulting in customer complaints.

[0003] Therefore, there is an urgent need for an FPC transparent reinforcement missing detection device that avoids misdetection due to visual fatigue, in order to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of this invention is to provide an FPC transparent reinforcement leak detection device that avoids misdetection due to visual fatigue.

[0005] To achieve the above objectives, the FPC transparent reinforcement missing-attachment detection device provided by this utility model is used to detect missing reinforcement plates on FPCs. Two detection windows are provided on the first side of the FPC, and a connecting circuit is provided between the two detection windows. The first side of the FPC is used to attach a transparent reinforcement plate, and the four edges of the transparent reinforcement plate are located within the four edges of the FPC. The FPC transparent reinforcement missing-attachment detection device includes a resistance detection device and two probes. The two probes are electrically connected to the resistance detection device. When the two probes are short-circuited, they form a circuit with the resistance detection device. The probes are used to align and insert into the detection windows for missing-attachment detection.

[0006] Preferably, the FPC includes a PI film and a first circuit board and a first cover film stacked sequentially on one side of the PI film. The first cover film is used for mounting a transparent reinforcing plate. The first cover film has detection windows, and two detection windows are respectively located on different parts of the first cover film. The connecting circuit is located on the first circuit board. When the transparent reinforcing plate is not mounted on the first cover film or is not properly mounted, the probe passes through the detection window.

[0007] Preferably, the FPC transparent reinforcement leak detection device of this utility model further includes a display device for displaying the detection results. The display device is electrically connected to the resistance detection device, and the display device displays the detection results obtained by the resistance detection device.

[0008] Preferably, the FPC transparent reinforcement leak detection device of this utility model also includes an alarm device, which is electrically connected to the resistance detection device. The resistance detection device compares the obtained detection result with a preset standard value to obtain an alarm result. The alarm device will sound an alarm when the alarm result is abnormal.

[0009] Preferably, the FPC transparent reinforcement leak detection device of this utility model also includes a fixture for supporting the FPC.

[0010] Preferably, the fixture is made of non-conductive plastic and has a thickness of 5-10 mm.

[0011] Preferably, the FPC transparent reinforcement leak detection device of this utility model also includes a multi-axis robot, with a probe installed at the output end of the multi-axis robot. The multi-axis robot drives the probe to perform multi-axis movements to drive the probe to insert into or leave the detection window.

[0012] Compared with existing technologies, the FPC transparent reinforcement missing-attachment detection device of this utility model detects FPCs by inserting probes into the detection window. When the first side of the FPC is properly fitted with a transparent reinforcement plate, the probes cannot penetrate the detection window due to the obstruction of the transparent reinforcement plate. Therefore, the two probes cannot connect to the connection circuit, and the circuit is open. The resistance value detected by the resistance detection device is relatively high, thus indicating that the first side of the FPC is properly fitted with a transparent reinforcement plate. When the first side of the FPC is not fitted with a transparent reinforcement plate or is not properly fitted with a transparent reinforcement plate, the probes can penetrate the detection window because there is no obstruction from the transparent reinforcement plate. The two probes connect to the connection circuit, and the circuit is closed. The resistance value detected by the resistance detection device is relatively low, thus indicating that the first side of the FPC is not fitted with a transparent reinforcement plate or is not properly fitted with a transparent reinforcement plate. In summary, the FPC transparent reinforcement missing-attachment detection device of this utility model determines whether the transparent reinforcement plate is fitted or whether it is properly fitted by using the resistance value detected by the resistance detection device. Even though the transparent reinforcing plate itself is made of transparent material, it is difficult to detect by visual inspection whether the first side of the FPC has a properly installed transparent reinforcing plate. However, this utility model does not use visual inspection for detection, but uses a probe inserted into the detection window for detection, which effectively prevents omissions due to visual fatigue and thus prevents false detections. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure when using the FPC transparent reinforcement missing patch detection device of this utility model to detect FPC reinforcement missing patches.

[0014] Figure 2This is a perspective view of the FPC to be tested in this utility model. The first side of the FPC is normally fitted with a transparent reinforcing plate.

[0015] Figure 3 yes Figure 2 The image shown is a three-dimensional view of the FPC after the transparent reinforcing plate has been separated.

[0016] Figure 4 yes Figure 2 The exploded view of the FPC shown. Detailed Implementation

[0017] To explain the technical content and structural features of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0018] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses an FPC transparent reinforcement missing-attachment detection device 100, used to detect missing-attachment of reinforcement plates on an FPC 200. Two detection windows 201 are provided on the first side of the FPC 200, and a connecting circuit is provided between the two detection windows 201. The first side of the FPC 200 is used to attach a transparent reinforcement plate 300, and the four edges of the transparent reinforcement plate 300 are located within the four edges of the FPC 200. The FPC transparent reinforcement missing-attachment detection device 100 includes a resistance detection device 10 and two probes 20. The two probes 20 are electrically connected to the resistance detection device 10. When the two probes 20 are short-circuited, they form a circuit with the resistance detection device 10. The probes 20 are used to align with and insert into the detection windows 201 for missing-attachment detection.

[0019] When the FPC transparent reinforcement missing-attachment detection device 100 of this utility model detects an FPC 200, the probes 20 are aligned with the insertion detection window 201 for missing-attachment detection. When the transparent reinforcement plate 300 is normally attached to the first side of the FPC 200, the probes 20 cannot penetrate the detection window 201 due to the obstruction of the transparent reinforcement plate 300. Therefore, the two probes 20 cannot be connected to the connection circuit, and the above-mentioned circuit is in an open circuit state. The resistance value detected by the resistance detection device 10 is relatively large, thereby determining that the FPC 200 has a missing-attachment. The first side of the FPC 200 is normally fitted with a transparent reinforcing plate 300. When the first side of the FPC 200 is not fitted with or is not properly fitted with a transparent reinforcing plate 300, the probe 20 can pass through the detection window 201 because the transparent reinforcing plate 300 is no longer blocking the detection window 201. The two probes 20 are connected to the connection circuit, and the above circuit is in a closed state. The resistance value detected by the resistance detection device 10 is relatively small, thus determining that the first side of the FPC 200 is not fitted with or is not properly fitted with a transparent reinforcing plate 300. In summary, the FPC transparent reinforcing plate missing detection device 100 of this utility model determines whether the transparent reinforcing plate 300 is fitted or whether it is properly fitted by using the resistance value detected by the resistance detection device 10. Even though the transparent reinforcing plate 300 itself is made of transparent material, it is difficult to detect by visual inspection whether the first side of the FPC200 has a properly installed transparent reinforcing plate 300. However, this utility model does not use visual inspection for detection, but uses a probe 20 inserted into the detection window 201 for detection, which effectively prevents omissions caused by visual fatigue and thus prevents false detections.

[0020] Preferably, the resistance value detected by the resistance detection device 10 is relatively large, meaning that the detected resistance value is generally greater than 10 ohms (but not limited to this value), and the resistance value detected by the resistance detection device 10 is relatively small, meaning that the detected resistance value is generally less than 10 ohms (but not limited to this value).

[0021] It is worth noting that the first side of the FPC200 is... Figure 3 The side indicated by the middle arrow A is opposite the second side (not shown). Preferably, the detection window 201 is arranged in a circle, but it is not limited to this. Since the four edges of the transparent reinforcing plate 300 are within the edge range of the FPC 200, white edges of the transparent reinforcing plate 300 can be avoided in the subsequent cutting process.

[0022] like Figures 1 to 4As shown, the FPC200 includes a PI film 210 and a first circuit board 220 and a first cover film 230 sequentially stacked on one side of the PI film 210. The first cover film 230 is used for mounting the transparent reinforcing plate 300. The first cover film 230 has detection windows 201, with two detection windows 201 located at different parts of the first cover film 230. The connecting circuit is located on the first circuit board 220. The probe 20 passes through the detection window 201 when the first cover film 230 is not mounted or when the transparent reinforcing plate 300 is not properly mounted. Further, the FPC200 also includes a second circuit board 240 and a second cover film 250 sequentially stacked on the other side of the PI film 210.

[0023] like Figure 1 As shown, the FPC transparent reinforcement leak detection device 100 of this utility model also includes a display device 30 for displaying the detection results. The display device 30 is electrically connected to the resistance detection device 10. The display device 30 displays the detection results obtained by the resistance detection device 10. For example, if the resistance detection device 10 detects a resistance of 15 ohms, the display device 30 displays the resistance of 15 ohms on the electronic display screen.

[0024] like Figure 1 As shown, the FPC transparent reinforcement leak detection device 100 of this utility model also includes an alarm device 40, which is electrically connected to the resistance detection device 10. The resistance detection device 10 compares the obtained detection result with a preset standard value to obtain an alarm result. The alarm device 40 alarms when the alarm result is abnormal. For example, if the preset standard value is set to 10 ohms, when the detection result obtained by the resistance detection device 10 is 7 ohms, the two are compared. If the detection result is less than the preset standard value, the alarm result is normal and no alarm is triggered. When the detection result obtained by the resistance detection device 10 is 16 ohms, the two are compared. If the detection result is greater than the preset standard value, the alarm result is abnormal and the alarm device 40 will trigger an alarm. The alarm can be triggered by means such as sounding an alarm, illuminating a warning light, sending a text message, or using a voice prompt light.

[0025] To facilitate testing, the FPC transparent reinforcement leak detection device 100 of this utility model also includes a fixture (not shown in the figure) for supporting the FPC 200. The fixture can stably support the FPC 200. Preferably, the fixture is made of non-conductive plastic and the thickness of the fixture is 5-10mm.

[0026] The FPC transparent reinforcement leak detection device 100 of this utility model also includes a multi-axis robot. The probe 20 is installed at the output end of the multi-axis robot. The multi-axis robot drives the probe 20 to perform multi-axis movements to drive the probe 20 to insert or leave the detection window 201, thereby realizing automated operation of the probe 20 movement.

[0027] The following is a brief introduction to the operation of the FPC transparent reinforcement missing bonding detection device 100 of this utility model: The FPC 200 is placed on the fixture for positioning. The multi-axis robot arm drives the probe 20 to be inserted into the detection window 201. When the transparent reinforcement plate 300 is normally attached to the first side of the FPC 200, the probe 20 cannot penetrate into the detection window 201 due to the obstruction of the transparent reinforcement plate 300. Therefore, the two probes 20 cannot be connected to the connecting circuit, and the above circuit is in an open circuit state. The resistance value detected by the resistance detection device 10 is relatively large. The display device 30 displays the detected resistance value and judges that the transparent reinforcement plate 300 is normally attached to the first side of the FPC 200. The alarm result is normal, and the alarm device 40 will not alarm. When the first side of the FPC200 is not mounted or is not properly mounted with a transparent reinforcing plate 300, the probe 20 can penetrate the detection window 201 because the transparent reinforcing plate 300 is no longer blocking the detection window 201. The two probes 20 are connected to the connection circuit, and the above circuit is in a closed state. The resistance value detected by the resistance detection device 10 is relatively small. The display device 30 displays the detected resistance value and judges that the first side of the FPC200 is not mounted or is not properly mounted with a transparent reinforcing plate 300. The alarm result is abnormal, and the alarm device 40 will alarm accordingly.

[0028] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall fall within the scope of the present utility model.

Claims

1. A device for detecting missing reinforcement plates on an FPC (Flexible Printed Circuit), used to detect missing reinforcement plates on an FPC, wherein two detection windows are provided on a first side of the FPC, a connecting circuit is provided between the two detection windows, the first side of the FPC is used to mount a transparent reinforcement plate, and the four edges of the transparent reinforcement plate are located within the four edges of the FPC, characterized in that... The FPC transparent reinforcement missing bonding detection device includes a resistance detection device and two probes. The two probes are electrically connected to the resistance detection device. When the two probes are short-circuited, they form a circuit with the resistance detection device. The probes are used to align and insert into the detection window for missing bonding detection.

2. The FPC transparent reinforcement leak detection device according to claim 1, characterized in that, The FPC includes a PI film and a first circuit board and a first cover film stacked sequentially on one side of the PI film. The first cover film is used for mounting the transparent reinforcing plate. The first cover film has the detection window, and the two detection windows are respectively located on different parts of the first cover film. The connection circuit is located on the first circuit board. The probe passes through the detection window when the transparent reinforcing plate is not mounted on the first cover film or is not properly mounted.

3. The FPC transparent reinforcement leak detection device according to claim 1, characterized in that, It also includes a display device for displaying the test results, the display device being electrically connected to the resistance detection device, and the display device displaying the test results obtained by the resistance detection device.

4. The FPC transparent reinforcement leak detection device according to claim 1, characterized in that, It also includes an alarm device, which is electrically connected to the resistance detection device. The resistance detection device compares the obtained detection result with a preset standard value to obtain an alarm result. The alarm device will sound an alarm when the alarm result is abnormal.

5. The FPC transparent reinforcement leak detection device according to claim 1, characterized in that, It also includes fixtures for supporting the FPC.

6. The FPC transparent reinforcement leak detection device according to claim 5, characterized in that, The fixture is made of non-conductive plastic and has a thickness of 5-10 mm.

7. The FPC transparent reinforcement leak detection device according to claim 5, characterized in that, It also includes a multi-axis manipulator, with the probe mounted on the output end of the multi-axis manipulator. The multi-axis manipulator drives the probe to perform multi-axis movements to drive the probe to insert into or leave the detection window.

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