A short circuit fault location system based on PCB board

Abstract

The invention discloses a short-circuit fault positioning system based on a PCB board, and relates to the technical field of PCB board processing. The system comprises a workbench, wherein a positioning frame is provided on the workbench, and a positioning groove for positioning the PCB board is provided at the inner side end of the positioning frame; a first cylinder is also arranged on the workbench, and a driving end of the first cylinder is fixedly connected to the positioning frame; wherein two groups of lifting plates are also arranged on the workbench, and the lifting plates on both sides are fixedly installed on a U-shaped frame, and the U-shaped frame is connected to a lifting mechanism for driving the vertical movement thereof. In the invention, after the PCB board is short-circuited, the first cylinder drives the positioning frame to move toward the workbench, and synchronously, the lifting plate is driven by the lifting mechanism to move toward a direction away from the workbench, thereby lifting the PCB board located in the positioning groove to a certain height, so that an operator can directly take out the PCB board.

Description

Technical Field

[0001] The invention relates to the technical field of PCB board processing, and in particular to a short circuit fault locating system based on a PCB board. Background Art

[0002] With the development of electronic information technology and the popularization of the Internet, electronic equipment is closely related to our lives. Both end users and R&D manufacturers are facing the possibility of electronic equipment failure. Short circuit failures of PCB boards still account for a large proportion of electronic equipment failure repairs, and usually, short circuit failures of PCB boards are very difficult to repair. If it is difficult to repair, it must be scrapped and replaced with new motherboard accessories to achieve the purpose of continued use.

[0003] There are many reasons for short circuits on PCBs, such as static electricity, mechanical damage, deformation of the main board, exceeding the rated operating range of the device, etc. However, the symptoms of PCBs are that some components are damaged. Usually, the size of PCBs is very large and there are many components, making it difficult to find the source of the short circuit fault.

[0004] In the prior art, a patent document with a publication number of CN112453620B discloses a maintenance device capable of positioning and detecting faults of a circuit board. By setting a positioning device, the circuit board can be clamped and protected by a clamping block, and the sliding block can be driven to move left and right and forward and backward, so that the positioning part can be quickly moved to the lower side of the microcontroller for magnified detection; the on-off detection of the circuit is performed on the adjusted electric pen one and the electric pen two; however, since the circuit board is usually a thinner sheet-like structure, after the detection is completed, since the circuit board is closely attached to the workbench, it is difficult for the staff to directly grab and move the circuit board by hand, and it is also necessary to use an external tool to lift one end of the circuit board to a certain angle before picking it up, and the process is relatively cumbersome. Summary of the invention

[0005] The purpose of the present invention is to provide a short circuit fault location system based on a PCB board to solve the following technical problems:

[0006] Since the circuit board is closely attached to the workbench, it is difficult for workers to grab and move the circuit board directly with their hands. They also need to use external tools to lift one end of the circuit board to a certain angle before picking it up.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A short-circuit fault positioning system based on a PCB board comprises a workbench, a positioning frame is provided on the workbench, and a positioning groove for positioning the PCB board is provided on the inner side end of the positioning frame;

[0009] A first cylinder is also arranged on the workbench, and a driving end of the first cylinder is fixedly connected to the positioning frame;

[0010] Among them, two groups of lifting plates are arranged on the workbench, and the lifting plates on both sides are fixedly installed on the U-shaped frame, and the U-shaped frame is connected to the lifting mechanism that drives the vertical movement thereof.

[0011] Preferably, the lifting mechanism includes a first screw rod arranged under the workbench for relative rotation, a first nut is provided on the first screw rod relative to the spiral sleeve, the first nut is rotatably connected to the push rod, the push rod is rotatably connected to the lifting plate, and the lifting plate is fixedly connected to the U-shaped frame through the lifting rod.

[0012] Preferably, a first gear is fixedly mounted on the end of the first screw rod, the first gear is meshed with a first rack plate, and the first rack plate is fixedly connected to the positioning frame via a support rod.

[0013] Preferably, limiting plates are arranged opposite to each other on both sides of the positioning frame, and guide rods slidably connected to the limiting plates are correspondingly arranged on the workbench.

[0014] Preferably, the L-shaped bracket is provided with a driving box on the side facing the workbench, a second screw is rotatably arranged in the driving box, and a second nut connected to the electric pen is spirally sleeved on the second screw.

[0015] Preferably, camera devices are installed on the electric pens on both sides respectively, and the camera devices are used to monitor the points to be detected on the PCB board.

[0016] Preferably, a slide groove is provided on the L-shaped bracket, a second cylinder is arranged on the L-shaped bracket, and a driving end of the second cylinder is fixedly connected to the driving box through a support.

[0017] Preferably, the L-shaped bracket is slidably connected to the slide rail, a second rack plate is provided at the bottom of the workbench, a drive motor is provided at the bottom of the L-shaped bracket, and a second gear meshing with the second rack plate is fixedly connected to the output end of the drive motor.

[0018] Preferably, a positioning plate is provided at the bottom of the positioning groove, and a plurality of suction cups are distributed on the positioning plate. The suction cups are connected to a cylinder arranged on the workbench through an air pipe. A piston is provided in the cylinder, and the piston is fixedly connected to the positioning frame through a driving rod.

[0019] Beneficial effects of the present invention:

[0020] (1) In the present invention, after the PCB board is short-circuited, the first cylinder drives the positioning frame to move toward the workbench, and synchronously, the lifting plate is driven by the lifting mechanism to move away from the workbench, thereby lifting the PCB board located in the positioning groove to a certain height, so that the operator can directly take out the PCB board;

[0021] (2) In the present invention, since the distances between the two points to be detected are different, the second screw is driven to rotate by a driving motor, and the second nut is synchronously driven to move the electric pen during the movement of the second screw, thereby adjusting the distance between the electric pens on both sides, so that the electric pens on both sides match the two points to be detected on the PCB board, the detection accuracy is higher, and no adjustment is required by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 The structure of a short circuit fault location system based on a PCB board of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 2 The structure of a short circuit fault location system based on a PCB board of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 3 The structure of a short circuit fault location system based on a PCB board of the present invention is shown in FIG. Figure 3 ;

[0026] Figure 4 The structure of a short circuit fault location system based on a PCB board of the present invention is shown in FIG. Figure 4 ;

[0027] Figure 5 It is a structural schematic diagram of a cylinder in a short-circuit fault locating system based on a PCB board of the present invention.

[0028] In the figure: 1, workbench; 2, L-shaped bracket; 3, positioning frame; 4, support rod; 5, first screw rod; 6, driving box; 7, suction cup; 101, second rack plate; 102, slide rail; 201, slide groove; 202, second cylinder; 203, driving motor; 204, second gear; 301, positioning groove; 302, guide rod; 303, limit plate; 401, first rack plate; 402, first cylinder; 501, first nut; 502, push rod; 503, first gear; 504, lifting plate; 505, U-shaped frame; 506, lifting rod; 507, lifting plate; 601, driving motor; 602, camera device; 603, electric pen; 701, positioning plate; 702, air pipe; 703, cylinder; 704, driving rod; 705, piston. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1

[0031] See also Figure 1-Figure 2 As shown, the present invention is a short-circuit fault positioning system based on a PCB board, comprising a workbench 1, on which a positioning frame 3 is provided. In one embodiment of the present invention, the positioning frame 3 is a rectangular structure, wherein the size of the positioning frame 3 can be preset based on the structure of the PCB board, and a positioning groove 301 for positioning the PCB board is provided at the inner end of the positioning frame 3; when performing fault detection on the PCB board, the PCB board is placed in the positioning groove 301, and the positioning groove 301 is used to limit the PCB board by the groove wall, so that the PCB board will not be offset when the PCB board is detected;

[0032] A first cylinder 402 is also arranged on the workbench 1, and a driving end of the first cylinder 402 is fixedly connected to the positioning frame 3. In another embodiment of the present invention, an L-shaped bracket 2 is arranged on one side of the workbench 1, and an electric pen 603 for detecting short circuit of the PCB board is arranged on the L-shaped bracket 2 toward the workbench 1; it should be noted that after the PCB board is positioned in the positioning groove 301, the first cylinder 402 is started to drive the positioning frame 3 to move toward the top of the L-shaped bracket 2, so that the PCB board contacts the electric pen 603, and the electric pen 603 is used to automatically detect whether the PCB board is short-circuited;

[0033] In addition, the positioning frame 3 is provided with limiting plates 303 on both sides thereof, and the workbench 1 is provided with guide rods 302 slidably connected to the limiting plates 303; it should be noted that, in the process of driving the positioning frame 3 to move, the positioning frame 3 synchronously drives the limiting plates 303 to slide on the guide rods 302, thereby improving the stability of the transfer of the positioning frame 3 and achieving the guiding function;

[0034] See also Figure 3, the workbench 1 is also provided with two sets of lifting plates 504, and the lifting plates 504 on both sides are fixedly mounted on the U-shaped frame 505, and the U-shaped frame 505 is connected to the lifting mechanism that drives its vertical movement; it should be noted that the length of the lifting plates 504 should be less than the length of the two ends of the inner side of the positioning frame 3, so that after the PCB board is short-circuited, the first cylinder 402 drives the positioning frame 3 to move toward the workbench 1, and synchronously, the lifting plates 504 are driven by the lifting mechanism to move away from the workbench 1, thereby lifting the PCB board located in the positioning groove 301 to a certain height, so that the operator can directly take out the PCB board;

[0035] The lifting mechanism includes a first screw rod 5 arranged below the workbench 1 and relatively rotated, the threads on both sides of the first screw rod 5 are in opposite directions, a first nut 501 is relatively spirally sleeved on the first screw rod 5, the first nut 501 is rotatably connected to a push rod 502, the end of the push rod 502 is rotatably connected to a lifting plate 507, and the lifting plate 507 is fixedly connected to the U-shaped frame 505 through a lifting rod 506; it can be explained that by driving the first screw rod 5 to rotate, the first nut 501 drives the lifting plate 507 to move through the push rod 502 during the movement on the first screw rod 5, and the lifting plate 507 synchronously drives the U-shaped frame 505 to rise or fall through the lifting rod 506;

[0036] See also Figure 4 , a first gear 503 is fixedly installed at the end of the first screw rod 5, the first gear 503 is meshed with the first rack plate 401, and the first rack plate 401 is fixedly connected to the positioning frame 3 through the support rod 4; it can be explained that when the positioning frame 3 moves toward the workbench 1, the positioning frame 3 drives the first rack plate 401 to move away from the workbench 1 through the support rod 4, and at this time, the first screw rod 5 is driven to rotate by the meshing of the first rack plate 401 and the first gear 503; when the positioning frame 3 moves in the direction away from the workbench 1, the positioning frame 3 drives the first rack plate 401 to move toward the workbench 1 through the support rod 4, and at this time, the first rack plate 401 synchronously drives the first screw rod 5 to rotate in the opposite direction through the first gear 503, and then drives the U-shaped frame 505 to rise or fall through the first nut 501 and the push rod 502;

[0037] See also Figure 5, the L-shaped bracket 2 is provided with a driving box 6 on one side facing the workbench 1, and a second screw is rotatably arranged in the driving box 6, and the end of the second screw is fixedly connected to the output end of the driving motor 601, and a second nut connected to the electric pen 603 is spirally sleeved on the second screw; it should be noted that in the process of detecting the PCB board, due to the different spacing between the two detected points, the second screw is driven to rotate by the driving motor 601, and the second nut is synchronously driven to move the electric pen 603 during the movement of the second screw, so as to adjust the spacing between the electric pens 603 on both sides, so that the electric pens 603 on both sides match the two points to be detected on the PCB board, and the detection accuracy is higher, and no adjustment is required by the staff;

[0038] It should be noted that the electric pens 603 on both sides are respectively equipped with camera devices 602, and the camera devices 602 are used to monitor the points to be detected on the PCB board;

[0039] The L-shaped bracket 2 is provided with a slide groove 201, and the L-shaped bracket 2 is provided with a second cylinder 202, and the driving end of the second cylinder 202 is fixedly connected to the driving box 6 through a support. It can be explained that when the position of the electric pen 603 is adjusted, the second cylinder 202 is started, and the second cylinder 202 drives the driving box 6 to move along the slide groove 201 through the support, so as to achieve the preliminary position adjustment of the electric pen 603.

[0040] The workbench 1 is provided with a slide rail 102, the L-shaped bracket 2 is slidably connected to the slide rail 102, a second rack plate 101 is provided at the bottom of the workbench 1, a driving motor 203 is provided at the bottom of the L-shaped bracket 2, and a second gear 204 meshing with the second rack plate 101 is fixedly connected to the output end of the driving motor 203; in one embodiment of the present invention, the driving motor 203 is started to drive the second gear 204 to rotate, and the second gear 204 drives the L-shaped bracket 2 to move along the slide rail 102 by meshing with the second rack plate 101 during the rotation process, thereby realizing the re-position adjustment of the electric pen 603, so that when short-circuit detection is performed on PCB boards of different models, the position of the electric pen 603 can be adjusted in real time based on the detection point;

[0041] A positioning plate 701 is provided at the bottom of the positioning groove 301, and a plurality of suction cups 7 are distributed on the positioning plate 701. The suction cups 7 are connected to a cylinder 703 arranged on the workbench 1 through an air pipe 702. A piston 705 is provided in the cylinder 703, and the piston 705 is fixedly connected to the positioning frame 3 through a driving rod 704. In actual application, when the positioning frame 3 drives the PCB board to move toward the electric pen 603, the positioning frame 3 lifts the piston 705 in the cylinder 703 through the driving rod 704, so that the cylinder 703 is in an air suction state, and then a negative pressure is generated at the suction cup 7 through the air pipe 702, so that the PCB board is firmly adsorbed in the positioning groove 301, thereby improving the stability during detection.

[0042] Example 2

[0043] A short circuit fault location system based on PCB board, the operation steps are as follows:

[0044] Place the PCB board in the positioning groove 301, and start the first cylinder 402 to drive the positioning frame 3 to move toward the top of the L-shaped bracket 2;

[0045] During the movement, the positioning frame 3 lifts the piston 705 in the cylinder 703 through the driving rod 704, so that the cylinder 703 is in a suction state, and negative pressure is generated at the suction cup 7 through the air pipe 702, so that the PCB board is firmly adsorbed in the positioning groove 301;

[0046] When the PCB board contacts the electric pen 603, the electric pen 603 automatically detects whether the PCB board is short-circuited;

[0047] After the detection is completed, the positioning frame 3 is moved toward the workbench 1, and the lifting plate 504 is driven by the lifting mechanism to move away from the workbench 1, thereby lifting the PCB board located in the positioning groove 301 to a certain height.

[0048] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are 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 direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A short circuit fault location system based on a PCB board, comprising a workbench, characterized in that: A positioning frame is provided on the workbench, and a positioning groove for positioning the PCB board is provided at the inner end of the positioning frame; A first cylinder is arranged on the workbench, and a driving end of the first cylinder is fixedly connected to the positioning frame; Among them, two sets of lifting plates are arranged on the workbench, and the lifting plates on both sides are fixedly installed on the U-shaped frame, and the U-shaped frame is connected to the lifting mechanism that drives its vertical movement; the first cylinder drives the positioning frame to move toward the workbench, and synchronously, the lifting plate is driven by the lifting mechanism to move away from the workbench, thereby lifting the PCB board located in the positioning groove to a certain height; The lifting mechanism includes a first screw rod arranged under the workbench and relatively rotating, the threads on both sides of the first screw rod rotate in opposite directions, a first nut is relatively sleeved on the first screw rod, the first nut is rotatably connected to the push rod, the end of the push rod is rotatably connected to the lifting plate, and the lifting plate is fixedly connected to the U-shaped frame through the lifting rod; by driving the first screw to rotate, the first nut drives the lifting plate to move through the push rod during the movement of the first screw, and the lifting plate drives the U-shaped frame to rise or fall synchronously through the lifting rod; The first gear is fixedly installed on the end of the first screw rod, the first gear is meshed with the first rack plate, and the first rack plate is fixedly connected to the positioning frame through the support rod; when the positioning frame moves toward the workbench, the positioning frame drives the first rack plate to move away from the workbench through the support rod, and at this time, the first screw rod is driven to rotate by the meshing of the first rack plate and the first gear; when the positioning frame moves toward the direction away from the workbench, the positioning frame drives the first rack plate to move toward the workbench through the support rod, and at this time, the first rack plate synchronously drives the first screw rod to rotate in the opposite direction through the first gear, and then drives the U-shaped frame to rise or fall through the first nut and the push rod; A positioning plate is provided at the bottom of the positioning groove, and a plurality of suction cups are distributed on the positioning plate. The suction cups are connected to a cylinder arranged on the workbench through an air pipe. A piston is provided in the cylinder, and the piston is fixedly connected to the positioning frame through a driving rod.

2. A short circuit fault location system based on a PCB board according to claim 1, characterized in that: Limiting plates are arranged opposite to each other on both sides of the positioning frame, and guide rods slidably connected with the limiting plates are arranged correspondingly on the workbench.

3. A short circuit fault location system based on a PCB board according to claim 1, characterized in that: A driving box is arranged on one side of the L-shaped bracket facing the workbench. A second screw rod is rotatably arranged in the driving box. A second nut connected with the electric pen is spirally sleeved on the second screw rod.

4. A short circuit fault location system based on a PCB board according to claim 3, characterized in that: Camera devices are respectively installed on the electric pens on both sides, and the camera devices are used to monitor the points to be detected on the PCB board.

5. A short circuit fault location system based on a PCB board according to claim 3, characterized in that: A sliding groove is provided on the L-shaped bracket, a second cylinder is arranged on the L-shaped bracket, and a driving end of the second cylinder is fixedly connected to the driving box through a support.

6. A short circuit fault location system based on a PCB board according to claim 5, characterized in that: The L-shaped bracket is slidably connected to the slide rail, a second rack plate is provided at the bottom of the workbench, a driving motor is provided at the bottom of the L-shaped bracket, and a second gear meshing with the second rack plate is fixedly connected to the output end of the driving motor.

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