Golden finger lead gap detection device

Abstract

The utility model relates to a golden finger lead gap detection device which comprises an impedance tester body, a workbench and a testing mechanism, the testing mechanism is located on the workbench and electrically connected with the impedance tester body, and the workbench is respectively connected with a first positioning plate and a second positioning plate in a sliding mode. The connecting line of the two oppositely-arranged first positioning plates is perpendicular to the connecting line of the two oppositely-arranged second positioning plates, the two first positioning plates are in threaded connection with the two ends of a first threaded rod respectively, the two second positioning plates are in threaded connection with the two ends of a second threaded rod respectively, and the first threaded rod is fixedly connected with the output end of a first motor. The second threaded rod is fixedly connected with the output end of the second motor, and the thread rotating directions of the two ends of the first threaded rod and the second threaded rod are opposite. The golden finger lead gap detection device realizes rapid and simple test of defective products which intercept golden finger lead gaps.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a gold finger guide line gap detection device. Background Art

[0002] In the existing technology, before etching the gold finger guides, a layer of dry film is covered on the entire surface of the PCB. Then, through exposure and development, the unnecessary leads at the gold finger guides are exposed and etched clean during etching. Because improper operation is inevitable during the etching process, the dry film may be scratched, and the scratched dry film may cause the gold finger guides and PAD to be corroded and form gaps. If such defective products are not tested and intercepted later, they will flow out to the client, causing customer complaints and reducing product competitiveness. When clamping and fixing the PCB board, the existing detection device only places the PCB board in the approximate position below the test component, and the operator adjusts one clamp at a time to fix it. The movement and positioning of the clamp depends only on the operator's experience and judgment. The position is not accurate enough and needs to be adjusted repeatedly to accurately align the gold finger guides with the probes of the test component for detection. Utility Model Content

[0003] The purpose of the utility model is to design a gold finger line gap detection device, which can quickly and easily clamp and fix a PCB board in an accurate position to facilitate testing and intercepting defective products with gold finger line gaps.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A golden finger guide wire gap detection device includes an impedance tester body, a workbench and a testing mechanism, the testing mechanism is located on the workbench and electrically connected to the impedance tester body, a first positioning plate and a second positioning plate are respectively slidably connected to the workbench, the connection line of the two oppositely arranged first positioning plates is perpendicular to the connection line of the two oppositely arranged second positioning plates, the two first positioning plates are respectively threadedly connected to the two ends of a first threaded rod, the two second positioning plates are respectively threadedly connected to the two ends of a second threaded rod, the first threaded rod is fixedly connected to the output end of a first motor, the second threaded rod is fixedly connected to the output end of a second motor, and the threads at both ends of the first threaded rod and the second threaded rod have opposite rotation directions.

[0006] Furthermore, the above-mentioned golden finger guide line gap detection device, the testing mechanism includes a vertical moving power device and a moving plate, the moving plate is fixedly connected to the output end of the vertical moving power device, a test probe is provided on the moving plate, the vertical moving power device is fixedly connected to the bracket, the bracket is fixedly connected to the workbench, and the moving plate is located above the workbench.

[0007] Furthermore, in the above-mentioned gold finger guide line gap detection device, a guide column is fixedly connected to the workbench, and the movable plate is slidably connected to the guide column.

[0008] Furthermore, in the above-mentioned gold finger guide line gap detection device, a marking mechanism is fixedly connected to the movable plate.

[0009] Furthermore, in the above-mentioned golden finger guide line gap detection device, the marking mechanism includes an electric telescopic rod and a marking motor, the marking motor is fixedly connected to the output end of the electric telescopic rod, and the output end of the marking motor is provided with a round needle for marking.

[0010] Furthermore, in the above-mentioned gold finger guide line gap detection device, the ends of the first positioning plate and the second positioning plate that can contact each other are beveled edges, and the beveled edge of the end of the first positioning plate matches the beveled edge of the end of the second positioning plate.

[0011] Furthermore, in the above-mentioned gold finger guide line gap detection device, a pad is provided on the workbench and between the two first positioning plates and the two second positioning plates.

[0012] Furthermore, in the above-mentioned gold finger guide line notch detection device, the first positioning plate and the second positioning plate are respectively provided with protrusions that cooperate with the pad.

[0013] Furthermore, in the above-mentioned golden finger guide line gap detection device, a guide groove and a through groove are provided on the workbench, the lower ends of the first positioning plate and the second positioning plate pass through the through groove, the first motor, the second motor, the first threaded rod and the second threaded rod are located below the workbench, and the first positioning plate and the second positioning plate are respectively provided with guide blocks that cooperate with the guide groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention provides a gold finger guide line gap detection device, which places a PCB board on a workbench, starts a first motor, and brings two first positioning plates threadedly connected at both ends of a first threaded rod closer together; starts a second motor, and brings two second positioning plates threadedly connected at both ends of a second threaded rod closer together; when the first positioning plate moves, the front and rear sides of the PCB board are restricted; when the second positioning plate moves, the left and right sides of the PCB board are restricted; the center of the PCB board is simultaneously located on the center line connecting the two first positioning plates and the center line connecting the two second positioning plates; the PCB board is clamped and fixed in a determined position, which does not rely on the operator's experience and judgment, and the position is accurate and does not require repeated adjustment; then, the test mechanism is started to perform impedance detection on the PCB board, and the test results are output to the impedance tester body; when the impedance of the PCB board is detected to be qualified, the gold finger guide line does not have a gap that affects the quality. The gold finger guide line gap detection device can quickly and easily clamp the PCB board in an accurate position, facilitate testing and intercepting defective products with gold finger guide line gaps, and prevent defective products from flowing out to the customer end, causing customer complaints and reducing product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the structure of the utility model from a side perspective;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model from a bottom perspective;

[0018] Figure 3 It is a partial structural diagram of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the first positioning plate and the backing plate of the utility model;

[0020] The names of the components in the figure are as follows:

[0021] 1. Impedance tester body; 2. Workbench; 201. Guide groove; 202. Through groove; 21. Guide column; 22. First positioning plate; 221. Positioning end; 222. Bump; 223. Guide block; 23. Second positioning plate; 24. First motor; 241. First threaded rod; 25. Second motor; 251. Second threaded rod; 26. Pad; 3. Vertical moving power unit; 4. Moving plate; 41. Marking mechanism; 42. Test probe. DETAILED DESCRIPTION

[0022] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0023] Example: Please refer to Figure 1-4 A gold finger guide wire gap detection device includes an impedance tester body 1, a workbench 2 and a testing mechanism.

[0024] The testing mechanism includes a vertical moving power device 3 and a moving plate 4. The vertical moving power device 3 is fixedly connected to an L-shaped bracket, which is fixedly connected to the workbench 2. The vertical moving power device 3 can be a cylinder. The moving plate 4 is fixedly connected to the output end of the vertical moving power device 3. A guide column 21 is fixedly connected to the workbench 2, and the moving plate 4 is slidably connected to the guide column 21. A test probe 42 is provided on the moving plate 4, and the test probe 42 is electrically connected to the impedance tester body 1. The impedance tester body 1 can be placed on the workbench 2. The moving plate 4 is located above the workbench 2. Driven by the vertical moving power device 3, the moving plate 4 moves downward along the guide column 21, driving the test probe 42 to detect the PCB board below, and the detection results are output to the impedance tester body 1.

[0025] A first positioning plate 22 and a second positioning plate 23 are slidably connected to the workbench 2. Two first positioning plates 22 are provided on the workbench 2, facing each other front and back, and two second positioning plates 23 are provided on the workbench 2, facing each other left and right. The line connecting the two first positioning plates 22 is perpendicular to the line connecting the two second positioning plates 23. The sliding connection method is as follows: a guide groove 201 and a through groove 202 are provided on the workbench 2. The lower ends of the first positioning plates 22 and the second positioning plates 23 respectively pass through the through groove 202. The first positioning plates 22 and the second positioning plates 23 are respectively provided with guide blocks 223 that cooperate with the guide grooves 201. The two first positioning plates 22 and the two second positioning plates 23 are used to accurately position the PCB board to be tested below the movable plate 4, facilitating contact detection by the test probe 42.

[0026] A first motor 24 and a second motor 25 are fixedly connected to the bottom of the workbench 2. The output end of the first motor 24 is fixedly connected to a first threaded rod 241, and the output end of the second motor 25 is fixedly connected to a second threaded rod 251. The first threaded rod 241 and the second threaded rod 251 are bidirectional threaded rods, that is, the threads at both ends of the first threaded rod 241 have opposite rotation directions, and the threads at both ends of the first threaded rod 241 also have opposite rotation directions. The two first positioning plates 22 are respectively threadedly connected to the two ends of the first threaded rod 241, and the two second positioning plates 23 are respectively threadedly connected to the two ends of the second threaded rod 251. When the first motor 24 is started, the two first positioning plates 22 threadedly connected to the two ends of the first threaded rod 241 move closer to or farther away from each other, and when the second motor 25 is started, the two second positioning plates 23 threadedly connected to the two ends of the second threaded rod 251 move closer to or farther away from each other.

[0027] Furthermore, a marking mechanism 41 is fixedly connected to the movable plate 4. This mechanism comprises an electric telescopic rod and a marking motor. The marking motor is fixedly connected to the output end of the electric telescopic rod. A round needle for marking is provided at the output end of the marking motor. The marking motor model is GM25-370PA. When a PCB is found to be qualified, it is marked by the marking mechanism 41.

[0028] Furthermore, the ends of the first positioning plate 22 and the second positioning plate 23 that can contact each other are beveled edges. The beveled edges of the ends of the first positioning plate 22 cooperate with the beveled edges of the ends of the second positioning plate 23, so that the first positioning plates 22 and the second positioning plates 23 just enclose a square space, and the adjacent first positioning plates 22 and second positioning plates 23 abut against each other through the beveled edges, which will not cause excessive compression on the PCB board placed in the square space. Furthermore, the first positioning plate 22 is provided with positioning ends 221 at both ends. The positioning ends 221 are long and narrow, and the guide post 21 is on the moving trajectory of the positioning ends 221, so that the first positioning plate 22 first abuts against the guide post 21 through the positioning ends 221 and stays in a determined position, making it easier for the second positioning plate 23 to complete the remaining two sides of the square, thereby avoiding misalignment of the first positioning plate 22 and the second positioning plate 23 during splicing.

[0029] Furthermore, a backing plate 26 is provided on the workbench 2, between the two first positioning plates 22 and the two second positioning plates 23. Each of the first positioning plates 22 and the second positioning plates 23 is provided with a bump 222 that mates with the backing plate 26. The backing plate 26 is used to protect the PCB, while the bump 222 is used to clamp and secure the PCB within the square space when the first and second positioning plates 22 and 23 come into contact with the backing plate 26 and stop moving.

[0030] The working principle of this embodiment: This embodiment provides a gold finger guide line gap detection device, which places the PCB board on the pad 26 of the workbench 2, starts the first motor 24, and the two first positioning plates 22 threadedly connected at both ends of the first threaded rod 241 approach each other until the positioning end 221 abuts against the guide column 21. At this time, the first motor 24 is stopped, and the first positioning plate 22 stays at the position where the positioning end 221 abuts against the guide column 21. Then the second motor 25 is started, and the two second positioning plates 23 threadedly connected at both ends of the second threaded rod 251 approach each other until the oblique side of the second positioning plate 23 abuts against the oblique side of the first positioning plate 22. The first positioning plate 22 and the second positioning plate 23 form a square space. When the first positioning plate 22 moves, the front and back sides of the PCB board are restricted. When the second positioning plate 23 moves, the left and right sides of the PCB board are restricted. When the square space is formed, the sides of the PCB board are clamped and fixed by the protrusions 222 on the first positioning plate 22 and the second positioning plate 23. The center of the PCB board will be located on the center line connecting the two first positioning plates 22 and the center line connecting the two second positioning plates 23 at the same time. The PCB board will be clamped and fixed in a determined position, without relying on the operator's experience and judgment. The position is accurate and does not require repeated adjustment. Then the vertical moving power device 3 is started to drive the moving plate 4 to move downward along the guide column 21, driving the test probe 42 to perform impedance detection on the PCB board below. The test result is output to the impedance tester body 1. When it is detected that the impedance of the PCB board is qualified, there is no gap in the golden finger marking that affects the quality. At this time, the electric telescopic rod causes the marking motor to descend until the circular needle contacts the PCB board, and the marking motor drives the circular needle to mark the PCB board. The golden finger marking gap detection device can quickly and easily clamp the PCB board in an accurate position, making it convenient to test defective products that have intercepted the golden finger marking gap.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "upper," "lower," "left," "right," "front," "rear," and similar expressions used herein are for illustrative purposes only.

[0032] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A gold finger guide line gap detection device, characterized in that: The invention comprises an impedance tester body (1), a workbench (2) and a test mechanism, wherein the test mechanism is located on the workbench (2) and is electrically connected to the impedance tester body (1); a first positioning plate (22) and a second positioning plate (23) are respectively slidably connected to the workbench (2); a line connecting the two first positioning plates (22) arranged opposite to each other is perpendicular to a line connecting the two second positioning plates (23) arranged opposite to each other; the two first positioning plates (22) are respectively threadedly connected to the two ends of a first threaded rod (241); the two second positioning plates (23) are respectively threadedly connected to the two ends of a second threaded rod (251); the first threaded rod (241) is fixedly connected to the output end of a first motor (24); the second threaded rod (251) is fixedly connected to the output end of a second motor (25); and the threads at the two ends of the first threaded rod (241) and the second threaded rod (251) are respectively threaded in opposite directions.

2. The gold finger guide line gap detection device according to claim 1, characterized in that: The testing mechanism comprises a vertically movable power device (3) and a movable plate (4); the movable plate (4) is fixedly connected to the output end of the vertically movable power device (3); a testing probe (42) is provided on the movable plate (4); the vertically movable power device (3) is fixedly connected to a bracket; the bracket is fixedly connected to the workbench (2); and the movable plate (4) is located above the workbench (2).

3. The gold finger guide line gap detection device according to claim 2, characterized in that: A guide column (21) is fixedly connected to the workbench (2), and the movable plate (4) is slidably connected to the guide column (21).

4. The golden finger guide line gap detection device according to claim 2, characterized in that: A marking mechanism (41) is fixedly connected to the movable plate (4).

5. The gold finger guide line gap detection device according to claim 4, characterized in that: The marking mechanism (41) comprises an electric telescopic rod and a marking motor, wherein the marking motor is fixedly connected to the output end of the electric telescopic rod, and the output end of the marking motor is provided with a round needle for marking.

6. The gold finger guide line gap detection device according to claim 1, characterized in that: The ends of the first positioning plate (22) and the second positioning plate (23) that can contact each other are beveled edges, and the beveled edge of the end of the first positioning plate (22) matches the beveled edge of the end of the second positioning plate (23).

7. The golden finger guide line gap detection device according to claim 1, characterized in that: A pad (26) is provided on the workbench (2) and between the two first positioning plates (22) and the two second positioning plates (23).

8. The golden finger guide line gap detection device according to claim 7, characterized in that: The first positioning plate (22) and the second positioning plate (23) are respectively provided with protrusions (222) that cooperate with the pad (26).

9. The golden finger guide line gap detection device according to claim 1, characterized in that: The workbench (2) is provided with a guide groove (201) and a through groove (202), the lower ends of the first positioning plate (22) and the second positioning plate (23) pass through the through groove (202), the first motor (24), the second motor (25), the first threaded rod (241) and the second threaded rod (251) are located below the workbench (2), and the first positioning plate (22) and the second positioning plate (23) are respectively provided with a guide block (223) that cooperates with the guide groove (201).

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