Module FPC open circuit and short circuit testing device

Abstract

The utility model relates to the technical field of FPC testing, and discloses a module FPC open and short circuit testing device which comprises a testing support, a plurality of groups of transmission belts used for conveying FPCs are installed on the testing support, and a protective outer frame is fixedly connected to the testing support. The inner wall of the protective outer frame is provided with two groups of open and short circuit testing mechanisms used for FPC open and short circuit testing. Through cooperation of the test support, the conveyor belt, the positioning mechanism, the open-short circuit test mechanism, the CCD positioning camera device and the operation display screen, the FPC body is moved to a position below the CCD positioning camera device by using the conveyor belt and is lifted and fixed through the positioning mechanism, and then the position of an electronic component is shot. Therefore, the open and short circuit testing mechanism is controlled to detect the open and short circuit of the connection point of the electronic component, the recognition efficiency of the connection condition of the electronic component on the FPC body is improved, the open and short circuit testing efficiency of the FPC body is improved, and the FPC production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of FPC testing, in particular to a module FPC open circuit and short circuit testing device. Background Technique

[0002] A flexible printed circuit board is a highly reliable and excellent flexible printed circuit board made of polyimide or polyester film as the base material, with the characteristics of high wiring density, light weight, thin thickness, and good bendability. After the flexible printed circuit board is produced, it needs to be tested for open circuit and short circuit through a testing device. The open circuit and short circuit test is mainly used to test the connection of electronic devices. As the name implies, the open circuit and short circuit test is to test open circuit and short circuit. Specifically, it is to test whether the place where an electronic device should be connected is connected. If it is not connected, it is an open circuit. If the place where it should not be connected is connected, it is a short circuit.

[0003] The installation and detection of traditional circuit board electronic components usually adopt manual testing. Due to the complex wiring of the circuit board, the efficiency of manually detecting the open circuit and short circuit of electronic components is slow, the testing efficiency is low, and at the same time, the detection quality may be unqualified due to missed detection and misdetection, which will affect the service life of the flexible printed circuit board. Therefore, we need to propose a module FPC open circuit and short circuit testing device. Content of the Utility Model

[0004] The purpose of the utility model is to provide a module FPC open circuit and short circuit testing device, which uses a camera to take pictures and perform positioning analysis on the surface of the flexible printed circuit board, can quickly identify the connection situation of each electronic component, and then automatically detect the connection points quickly through the device, so as to improve the efficiency of the open circuit and short circuit test and ensure the quality of circuit board production, so as to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A module FPC open circuit and short circuit testing device, including a testing bracket, on which a plurality of conveyor belts for conveying FPC are installed, a protective outer frame is fixedly connected to the testing bracket, and two open circuit and short circuit testing mechanisms for testing the open circuit and short circuit of FPC are installed on the inner wall of the protective outer frame. A positioning mechanism for supporting and positioning the FPC is arranged at the bottom of the testing bracket, an FPC body is arranged on the positioning mechanism, a photoelectric sensor for detecting the FPC is installed at one end of the protective outer frame close to the conveyor belt feeding, a CCD positioning camera device for taking pictures of the FPC is arranged at the bottom of the inner cavity of the protective outer frame, the FPC body is arranged directly below the CCD positioning camera device, and an operation display screen is installed on one side of the protective outer frame.

[0006] Preferably, the positioning mechanism includes two groups of first electric push rods installed at the bottom of the inner cavity of the test bracket. The telescopic ends of the two groups of first electric push rods penetrate through the test bracket and are fixedly connected to a bottom plate. The upper surface of the bottom plate is fixedly connected with multiple groups of corresponding support rods, and the upper ends of every two groups of support rods penetrate through the test bracket and are fixedly connected to a support suction plate.

[0007] Preferably, the upper surface of each group of support suction plates is provided with multiple negative pressure suction holes, and the multiple negative pressure suction holes are arranged at equal intervals. One side of each group of support suction plates is provided with an air suction valve.

[0008] Preferably, the multiple groups of support suction plates and the multiple groups of conveyor belts are alternately arranged, and each group of support suction plates is arranged in the gap between two adjacent conveyor belts.

[0009] Preferably, both groups of open / short circuit test mechanisms include first electric guide rails installed on both sides of the inner cavity of the protective outer frame. A second electric guide rail is installed on the sliders of the two groups of first electric guide rails, and a second electric push rod is installed on the slider of the second electric guide rail.

[0010] Preferably, the telescopic end of the second electric push rod penetrates through the slider of the second electric guide rail and is fixedly connected to a mounting block, and two test probes are arranged on the lower surface of the mounting block.

[0011] Preferably, the inner cavity of the test bracket is rotatably connected with multiple drive shafts for supporting the conveyor belt. One end of one of the drive shafts penetrates through the test bracket and is driven by a motor. The feeding end of the inner cavity of the test bracket is provided with a feeding carrier plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The present utility model mainly realizes the cooperation among the test bracket, the conveyor belt, the positioning mechanism, the open / short circuit test mechanism, the CCD positioning camera device and the operation display screen. The FPC body is moved to the lower part of the CCD positioning camera device by the conveyor belt and first fixed by lifting through the positioning mechanism, and then the positions of the electronic components are photographed, so as to control the open / short circuit detection of the connection points of the electronic components by the open / short circuit test mechanism, improve the recognition efficiency of the connection conditions of the electronic components on the FPC body, thereby improving the open / short circuit test efficiency of the FPC body and the production efficiency of the FPC. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structural schematic diagram of the present utility model;

[0015] Figure 2 is the conveyor belt structural schematic diagram of the present utility model;

[0016] Figure 3Schematic structural diagram of the positioning mechanism of the present utility model;

[0017] Figure 4 Schematic structural diagram of the open - short circuit test mechanism of the present utility model.

[0018] In the figure: 1, test bracket; 2, protective outer frame; 3, drive shaft; 4, conveyor belt; 5, positioning mechanism; 51, first electric push rod; 52, bottom plate; 53, support rod; 54, support suction plate; 55, negative pressure suction hole; 56, suction valve; 6, open - short circuit test mechanism; 61, first electric guide rail; 62, second electric guide rail; 63, second electric push rod; 64, mounting block; 65, test probe; 7, CCD positioning camera device; 8, photoelectric sensor; 9, feeding carrier plate; 10, operation display screen; 11, FPC body. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4 , the present utility model provides a technical solution: a module FPC open - short circuit test device, including a test bracket 1, on which multiple conveyor belts for conveying the FPC are installed, a protective outer frame 2 is fixedly connected to the test bracket 1, two open - short circuit test mechanisms 6 for performing open - short circuit tests on the FPC are installed on the inner wall of the protective outer frame 2, a positioning mechanism 5 for supporting and positioning the FPC is arranged at the bottom of the test bracket 1, an FPC body 11 is arranged on the positioning mechanism 5, a photoelectric sensor 8 for detecting the FPC is installed at one end of the protective outer frame 2 close to the feeding of the conveyor belt 4, a CCD positioning camera device 7 for photographing the FPC is arranged at the bottom of the inner cavity of the protective outer frame 2, the FPC body 11 is arranged directly below the CCD positioning camera device 7, and an operation display screen 10 is installed on one side of the protective outer frame 2.

[0021] The positioning mechanism 5 includes two groups of first electric push rods 51 installed at the bottom of the inner cavity of the test bracket 1. The telescopic ends of the two groups of first electric push rods 51 penetrate through the test bracket 1 and are fixedly connected to a bottom plate 52. The upper surface of the bottom plate 52 is fixedly connected with multiple groups of corresponding support rods 53. The upper ends of every two groups of support rods 53 penetrate through the test bracket 1 and are fixedly connected to a support suction plate 54. The first electric push rod 51 facilitates the adjustment of the height of the bottom plate 52, thereby conveniently moving the support suction plate 54 on the support rods 53 between the conveyor belts, so as to jack up and fix the FPC body 11 conveyed on the conveyor belt 4, improving the practicability. The overall automation degree is relatively high, and the open-circuit and short-circuit detection efficiency of the FPC body 11 is improved.

[0022] The upper surface of each group of support suction plates 54 is provided with multiple negative pressure suction holes 55. The multiple negative pressure suction holes 55 are arranged at equal intervals. One side of each group of support suction plates 54 is provided with an air suction valve 56. The external air pump facilitates the negative pressure fixation of the FPC body 11 by the support suction plate 54 through the negative pressure suction holes 55, improving the stability during the shooting of the CCD positioning camera device 7, thereby ensuring the accuracy of the connection point acquisition.

[0023] The multiple groups of support suction plates 54 and the multiple conveyor belts 4 are alternately arranged. Each group of support suction plates 54 is arranged in the gap between two adjacent conveyor belts 4. The alternating arrangement of the multiple conveyor belts and the support suction plates 54 facilitates the rapid conveying and positioning of the FPC body 11, improving the practicability.

[0024] The two open-circuit and short-circuit test mechanisms 6 both include first electric guide rails 61 installed on both sides of the inner cavity of the protection outer frame 2. A second electric guide rail 62 is installed on the sliders of the two groups of first electric guide rails 61. A second electric push rod 63 is installed on the slider of the second electric guide rail 62. The first electric guide rail 61 and the second electric guide rail 62 can quickly adjust the position of the second electric push rod 63, thereby improving the open-circuit and short-circuit test efficiency of the FPC body 11.

[0025] The telescopic end of the second electric push rod 63 penetrates through the slider of the second electric guide rail 62 and is fixedly connected to a mounting block 64. The lower surface of the mounting block 64 is provided with two groups of test probes 65. The second electric push rod 63 adjusts the position of the probes on the mounting block 64, thereby facilitating the open-circuit and short-circuit test of the connection points on the FPC body 11.

[0026] The inner cavity of the test bracket 1 is rotatably connected with multiple drive shafts 3 for supporting the conveyor belts. One end of one of the drive shafts 3 penetrates through the test bracket 1 and is driven by a motor. An inlet carrier plate 9 is arranged at the inlet end of the inner cavity of the test bracket 1. The inlet carrier plate 9 facilitates the rapid placement of the FPC body 11, and then controls the motor (not shown in the figure) to stop after passing through the photoelectric sensor 8. The photoelectric sensor 8 and the CCD positioning camera device 7 are both prior arts and will not be elaborated too much.

[0027] During use, place the FPC body 11 that needs open / short circuit detection on the feeding carrier tray, and make half of the FPC body 11 located on the conveyor belt, so as to facilitate the conveyor belt to drive the FPC body 11 into the protective outer frame 2. When the photoelectric sensor 8 detects the FPC body 11, the drive shaft 3 stops rotating, so that the FPC body 11 on the conveyor belt 4 stops moving. The first electric push rod 51 of the positioning mechanism 5 drives the bottom plate 52 to rise, so that the support suction plate 54 on the support rod 53 lifts the FPC body 11. At the same time, an external air pump makes the air in the support suction plate 54 in negative pressure through the suction valve 56 to improve the stability of the FPC body 11. At this time, the camera of the CCD positioning camera device 7 takes pictures of the FPC body 11 and displays the images on the operation display. After the operation display screen 10 obtains the detection points, it controls the drive of the open / short circuit detection mechanism. The first electric guide rail 61 drives the second electric guide rail 62 to move in the X-axis direction. Similarly, the second electric guide rail 62 drives the second electric push rod 63 to move in the Y-axis direction, so that the detection probes on the mounting plate can quickly perform open / short circuit detection on the electronic component detection points at any position on the FPC body 11. At the same time, the two groups of open / short circuit detection mechanisms can shorten the detection time of the FPC body 11, thereby accelerating the detection efficiency of the FPC body 11.

[0028] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A module FPC open / short circuit test device, comprising a test bracket (1), characterized in that: A plurality of conveyor belts for conveying FPC are installed on the test bracket (1). A protective outer frame (2) is fixedly connected to the test bracket (1). Two open / short circuit test mechanisms (6) for performing open / short circuit tests on FPC are installed on the inner wall of the protective outer frame (2). A positioning mechanism (5) for supporting and positioning FPC is arranged at the bottom of the test bracket (1). An FPC body (11) is arranged on the positioning mechanism (5). A photoelectric sensor (8) for detecting FPC is installed at one end of the protective outer frame (2) close to the feed of the conveyor belt (4). A CCD positioning and imaging device (7) for imaging FPC is arranged at the bottom of the inner cavity of the protective outer frame (2). The FPC body (11) is arranged directly below the CCD positioning and imaging device (7). An operation display screen (10) is installed on one side of the protective outer frame (2).

2. The short - circuit and open - circuit test device for module FPC according to claim 1, wherein: The positioning mechanism (5) includes two first electric push rods (51) installed at the bottom of the inner cavity of the test bracket (1). The telescopic ends of the two first electric push rods (51) penetrate through the test bracket (1) and are fixedly connected to a bottom plate (52). A plurality of corresponding support rods (53) are fixedly connected to the upper surface of the bottom plate (52). The upper ends of every two support rods (53) penetrate through the test bracket (1) and are fixedly connected to a support suction plate (54).

3. The module FPC open / short circuit test device according to claim 2, characterized in that: A plurality of negative pressure suction holes (55) are formed on the upper surface of each support suction plate (54). The plurality of negative pressure suction holes (55) are arranged at equal intervals. An air suction valve (56) is arranged on one side of each support suction plate (54).

4. The module FPC open - short circuit test device according to claim 3, wherein: The plurality of support suction plates (54) and the plurality of conveyor belts (4) are arranged alternately. Each support suction plate (54) is arranged in the gap between two adjacent conveyor belts (4).

5. The short-circuit and open-circuit test device for module FPC according to claim 4, wherein: Both of the two open / short circuit test mechanisms (6) include first electric guide rails (61) installed on both sides of the inner cavity of the protective outer frame (2). A second electric guide rail (62) is installed on the slider of the two first electric guide rails (61). A second electric push rod (63) is installed on the slider of the second electric guide rail (62).

6. The module FPC open - short circuit test device according to claim 5, characterized in that: The telescopic end of the second electric push rod (63) penetrates through the slider of the second electric guide rail (62) and is fixedly connected to a mounting block (64). Two test probes (65) are arranged on the lower surface of the mounting block (64).

7. The module FPC open / short circuit test device according to claim 6, wherein: A plurality of drive shafts (3) for supporting the conveyor belt are rotatably connected in the inner cavity of the test bracket (1). One end of one of the drive shafts (3) penetrates through the test bracket (1) and is driven by a motor. An inlet carrier plate (9) is arranged at the feed end of the inner cavity of the test bracket (1).

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