Maintenance and test platform for computer graphics card

Abstract

The invention belongs to the technical field of display card maintenance, and particularly relates to a computer display card maintenance test platform which comprises a workbench body 1, a positioning assembly 2 fixedly connected to the surface of the workbench body 1 and a limiting assembly 6 arranged above the workbench body 1, the positioning assembly 2 comprises a mounting plate 222, and an electric push rod 3 is mounted on the surface of the mounting plate 222 through a mounting base; a display screen 4 is mounted on the surface of the mounting plate 222, and a detection plug 5 is arranged above the workbench main body 1; the display card inspection table has the advantages that the display cards can be conveniently positioned, the display cards can be prevented from sliding to cause detection errors and breakage, the display cards of the same model can be conveniently overhauled in batches, surface scratches caused by contact between the back surfaces of the display cards and the table board can be prevented, electronic elements on the back surfaces can be prevented from being possibly extruded to cause damage, and the service life of the display cards can be prolonged. And the display card can be prevented from being placed unevenly when being overhauled due to the fact that the electronic element protrusions on the back face are in contact with the table top.

Description

Technical Field

[0001] The present invention belongs to the technical field of graphics card repair, and particularly relates to a computer graphics card repair and test platform. Background Art

[0002] The graphics card is mainly responsible for presenting the pictures conceived by the CPU one by one, and using the display to play these pictures coherently and at high speed, and finally forming a visible video. According to the structure, the graphics card can be divided into two categories. One is the integrated graphics card, which means that the display chip, video memory and related circuits are all integrated on the motherboard. The advantages are low power consumption, less heat generation and low price. The disadvantage is that it occupies the system memory and is easy to cause the computer to freeze. It is mainly suitable for home office and users with low requirements for computer performance. The other is the discrete graphics card, which means that it has a separate video memory. The advantages are that it does not occupy the system memory, has better display effects and performance than the integrated graphics card, is convenient for upgrading and has free selection. The disadvantages are high power consumption, large heat generation and requires a separate video output interface. For users with high requirements for image rendering and image frame refresh rate, since for mid- to high-end computers equipped with discrete graphics cards, the price of the graphics card accounts for half of the price of the entire host, when the graphics card fails, it is preferred to negotiate warranty with the manufacturer. However, some graphics cards are not covered by the warranty for some reasons, so it is necessary to use a third-party repair agency for repair. When detecting or repairing, the graphics card motherboard needs to be placed on a special carrier plate.

[0003] However, when the existing device repairs and detects the graphics card, it will clamp and position the graphics card. Since the two sides of the graphics card are relatively thin, when clamping it, it is easy to cause the graphics card to bend due to the difficulty of controlling the force. Moreover, the surface of the graphics card is covered with several electronic components such as resistors. The existing clamping mechanism is very likely to cause scratches on its surface. Also, since there is no gap between the table surface of the existing detection mechanism and the graphics card component, and the surface of the graphics card is covered with several electronic components such as resistors, it will cause the graphics card to be placed unevenly before testing. When the gold fingers are close to each other, friction will occur due to inclination, resulting in scratches on the surface of the gold fingers. Also, because the type and size of the graphics card are roughly divided into several fixed types, when encountering graphics cards of the same type, the existing device needs to adjust the positioning device every time during detection, which is relatively cumbersome and has low applicability.

[0004] To solve the above problems, a computer graphics card repair and test platform is proposed in this application. Summary of the Invention

[0005] To solve the problems raised in the above-mentioned background art, the present invention provides a computer graphics card repair and test platform, which is convenient for positioning the graphics card, preventing the graphics card from sliding and thus causing incorrect detection and damage, facilitating batch maintenance of graphics cards of the same model, preventing surface scratches caused by the back of the graphics card contacting the tabletop, and possibly squeezing the electronic components on the back, resulting in damage. It can also prevent the electronic components on the back from protruding and contacting the tabletop, causing the graphics card to be unevenly placed during maintenance.

[0006] To achieve the above object, the present invention provides the following technical solution: A computer graphics card repair and test platform, including a workbench main body, a positioning component fixedly connected to the surface of the workbench main body, and a limiting component arranged above the workbench main body. The positioning component includes a mounting plate, an electric push rod is installed on the surface of the mounting plate through a mounting seat, a display screen is installed on the surface of the mounting plate, a detection plug is arranged above the workbench main body, the output shaft of the electric push rod penetrates through the surface of the mounting plate, the detection plug is installed on the surface of the output shaft of the electric push rod through a mounting seat B, the detection plug and the display screen are electrically connected through a power cord, a console is fixedly connected to the surface of the workbench main body, four sliding grooves are evenly opened on the surface of the console, a slider A is arranged inside each sliding groove, the slider A is slidably connected to the console through the sliding groove, a positioning column is fixedly connected to the surface of the slider A, limiting grooves A corresponding to the sliding grooves are opened inside the console and are mutually communicated with the inside of the sliding grooves, a roller is rotatably connected to the inside of the slider A through a bearing, and the roller is inserted into the inside of the limiting groove A. The roller can make the positioning column move more smoothly.

[0007] As a preferred embodiment of the computer graphics card repair and test platform of the present invention, a number of electromagnetic coils are evenly embedded inside the console, each electromagnetic coil is located on one side of the sliding groove, the magnetic field direction of the electromagnetic coil is the same as the moving direction of the slider A, a control switch is installed on the surface of the console, and the electromagnetic coil and the control switch are both connected to an external control module. Here, the slider A is magnetized because it needs to cooperate with the electromagnetic coil.

[0008] As a preferred embodiment of the computer graphics card repair and test platform of the present invention, the positioning column is of a cylindrical stepped structure, and such a structure can ensure that after the positioning column is inserted into the positioning hole of the graphics card, the graphics card will not tilt when placed due to the contact between the electronic components such as resistors on the bottom surface and the console. One end of the positioning column away from the slider A is of an arc structure, ensuring that when the positioning column is inserted into the positioning hole of the graphics card, the friction generated by hard contact with the surface of the graphics card is reduced, thereby preventing scratches on it.

[0009] Preferably, as a computer graphics card repair and test platform of the present invention, a linkage rod is fixedly connected to the surface of the slider A. The linkage rod is slidably connected to the operating table through the chute. A limiting cylinder is slidably connected to the surface of the linkage rod. A positioning ring is rotatably connected to the surface of the limiting cylinder. A connecting rod is fixedly connected to the surface of the positioning ring. One end of the connecting rod away from the positioning ring is fixedly connected to a positioning cylinder. The positioning cylinder and the positioning column are on the same axis. The positioning column is inserted into the interior of the positioning cylinder.

[0010] Preferably, as a computer graphics card repair and test platform of the present invention, a lighting lamp is fixedly connected to the upper surface of the positioning cylinder. A receiving hole A is formed in the interior of the positioning cylinder. A pressure switch is disposed inside the receiving hole A. The pressure switch is slidably connected to the positioning cylinder through the receiving hole A. A receiving hole B is formed in the interior of the connecting rod, and the receiving hole A and the receiving hole B communicate with each other. The lighting lamp and the pressure switch are connected to an external power supply through a power cord, and the power cord passes through the receiving hole A and the receiving hole B.

[0011] Preferably, as a computer graphics card repair and test platform of the present invention, two limiting grooves are symmetrically formed in the interior of the linkage rod, and a toothed plate A is disposed inside each limiting groove. The toothed plate A is slidably connected to the linkage rod through the limiting groove. Two toothed plates B are symmetrically and fixedly connected to the interior of the limiting cylinder. The toothed plate B and the toothed plate A are meshed. Two tension springs are symmetrically and fixedly connected to the interior of each limiting groove. Two ends of the tension spring are respectively fixedly connected to the linkage rod and the toothed plate A. Two limiting plates B are symmetrically and fixedly connected to the surface of each toothed plate A. A limiting plate A is attached to the surface of the limiting plate B. A spring A is disposed above the linkage rod. One end of the limiting plate A away from the limiting plate B penetrates the linkage rod and is fixedly connected to the spring A.

[0012] Preferably, as a computer graphics card repair and test platform of the present invention, the limiting plate A and the limiting plate B are trapezoidal structures, and the inclined surfaces of the two trapezoids are attached to each other. By sliding the limiting plate A on the surface of the limiting plate B, the toothed plate A is controlled to slide inside the limiting groove.

[0013] Preferably, as a computer graphics card repair and test platform of the present invention, a plurality of limiting holes A are uniformly formed in the surface of the limiting cylinder. A plug is disposed inside each limiting hole A. The plug is slidably connected to the limiting cylinder through the limiting hole A. A toothed ring is fixedly connected to the interior of the positioning ring. The toothed ring and the plug are attached to each other. One ends of the plug and the toothed ring close to each other are arc-shaped surfaces, so that the positioning ring can be rotated on the surface of the limiting cylinder only when a relatively large force is applied to the positioning ring.

[0014] As a preferred computer graphics card repair and testing platform of the present invention, a fixing plate is fixedly connected to the surface of the workbench body, a positioning shaft is rotatably connected inside the fixing plate, a gear is arranged at one end of the positioning shaft close to the operating table, a limiting slot B is arranged inside the operating table, two sliders B are symmetrically arranged inside the limiting slot B, a positioning plate is fixedly connected to the surface of each slider B, adjacent sides of the two positioning plates are fixedly connected to tooth plates C, and the two tooth plates C are located on both sides of the gear, the two tooth plates C are meshed with the gear, a rubber sleeve is arranged at one end of the positioning shaft away from the gear, a plurality of rubber balls are evenly and fixedly connected to the surface of the rubber sleeve for increasing friction.

[0015] As a preferred computer graphics card repair and testing platform of the present invention, a ratchet groove is provided inside the gear, and limiting holes B are evenly provided inside the positioning shaft, and ratchet teeth are provided inside each of the limiting holes B, and the ratchet teeth are slidably connected to the positioning shaft through the limiting holes B, and a spring B is provided inside the limiting holes B, and the two ends of the spring B are fixedly connected to the ratchet teeth and the positioning shaft respectively.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: by adding a positioning component to the present application, the cooperation of the slider, the positioning column and the electromagnetic ring can be utilized, and the positioning column can be moved and inserted into the interior of the positioning hole, thereby realizing the positioning of the graphics card, which is convenient for preventing the graphics card from sliding and causing incorrect detection and damage during the detection of the graphics card, and the four positioning columns are inserted into the interior of the positioning holes opened by the graphics card itself, and will not contact the surface of the graphics card, thereby preventing scratches on the surface and damage to electronic components such as resistors when contacting the surface, and by pressing the corresponding button of the control switch, the slider is moved through a pre-written program, so that rapid positioning can be realized. And accurately move the positioning column to a suitable position, which is convenient for batch maintenance of graphics cards of the same model. At the same time, a limit assembly is added, and the cooperation of the tooth plate C, positioning plate, ratchet groove and ratchet teeth can be utilized. The rotation of the gear drives the tooth plate C to move, and indirectly drives the two positioning plates to approach to position the graphics card, so that the test point of the graphics card and the detection plug can correspond to each other, and the graphics card is limited, which prevents the graphics card from shaking and achieves stability during detection. When the force of the tooth plate C on the gear limit is greater than the elastic force of the spring B, the ratchet teeth will slide inside the limit hole B, so that the rotation of the positioning shaft cannot drive the gear to rotate, so that the limit clamp will not be deformed due to inaccurate force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 is a structural schematic diagram of the present invention;

[0019] Figure 2 is a structural schematic diagram of the positioning shaft and the rubber sleeve in the present invention;

[0020] Figure 3 is a structural schematic diagram of the operating platform and the control switch in the present invention;

[0021] Figure 4 is a structural schematic diagram of the operating platform and the electromagnetic coil in the present invention;

[0022] Figure 5 is a structural schematic diagram of the operating platform and the linkage rod in the present invention;

[0023] Figure 6 is a structural schematic diagram of the toothed plate C and the positioning plate in the present invention;

[0024] Figure 7 is a structural schematic diagram of the limiting plate A and the limiting plate B in the present invention;

[0025] Figure 8 is a structural schematic diagram of the horizontal cross-section of the positioning ring in the present invention;

[0026] Figure 9 is a structural schematic diagram of the vertical cross-section of the limiting cylinder in the present invention;

[0027] Figure 10 of the present invention Figure 5 is an enlarged view of part A;

[0028] Figure 11 of the present invention Figure 6 is an enlarged view of part B;

[0029] In the figure:

[0030] 1. Workbench main body; 2. Positioning component; 21. Chute; 22. Limiting groove A; 23. Roller; 24. Slide block A; 25. Operating table; 26. Positioning column; 27. Linking rod; 28. Positioning cylinder; 29. Connecting rod; 210. Positioning ring; 211. Limiting cylinder; 212. Limiting hole A; 213. Plug pin; 214. Spring A; 215. Tooth plate A; 216. Limiting plate A; 217. Limiting plate B; 218. Tension spring; 219. Tooth plate B; 220. Lighting lamp; 221. Pressure switch; 222. Mounting plate; 223. Tooth ring; 224. Electromagnetic coil; 225. Control switch; 3. Electric push rod; 4. Display screen; 5. Detection plug; 6. Limiting component; 61. Fixed plate; 62. Positioning shaft; 63. Gear; 64. Tooth plate C; 65. Positioning plate; 66. Slide block B; 67. Limiting groove B; 68. Rubber sleeve; 69. Ratchet tooth groove; 610. Limiting hole B; 611. Ratchet tooth; 612. Spring B. Detailed implementation mode

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1

[0033] As Figures 1 to 11 shown;

[0034] In order to facilitate the positioning of the graphics card, this computer graphics card repair and test platform includes a workbench main body 1, a positioning component 2 fixedly connected to the surface of the workbench main body 1, and a limiting component 6 arranged above the workbench main body 1. The positioning component 2 includes a mounting plate 222. An electric push rod 3 is installed on the surface of the mounting plate 222 through a mounting seat. A display screen 4 is installed on the surface of the mounting plate 222. A detection plug 5 is arranged above the workbench main body 1. The output shaft of the electric push rod 3 penetrates through the surface of the mounting plate 222. The detection plug 5 is installed on the surface of the output shaft of the electric push rod 3 through a mounting seat B. The detection plug 5 and the display screen 4 are electrically connected through a power cord. A console 25 is fixedly connected to the surface of the workbench main body 1. Four sliding grooves 21 are evenly formed on the surface of the console 25. A slider A 24 is arranged inside each sliding groove 21. The slider A 24 is slidably connected to the console 25 through the sliding groove 21. A positioning column 26 is fixedly connected to the surface of the slider A 24. Limiting grooves A 22 corresponding to the sliding grooves 21 are formed inside the console 25 and communicate with the inside of the sliding grooves 21. A roller 23 is rotatably connected to the inside of the slider A 24 through a bearing. The roller 23 is inserted into the inside of the limiting groove A 22. The roller 23 can make the positioning column 26 move more smoothly. A fixing plate 61 is fixedly connected to the surface of the workbench main body 1. A positioning shaft 62 is rotatably connected to the inside of the fixing plate 61. A gear 63 is arranged at one end of the positioning shaft 62 close to the console 25. A limiting groove B 67 is formed inside the console 25. Two sliders B 66 are symmetrically arranged inside the limiting groove B 67. A positioning plate 65 is fixedly connected to the surface of each slider B 66. Tooth plates C 64 are fixedly connected to the adjacent surfaces of the two positioning plates 65. The two tooth plates C 64 are located on both sides of the gear 63. The two tooth plates C 64 are meshed with the gear 63. A rubber sleeve 68 is sleeved on the end of the positioning shaft 62 far from the gear 63. A number of rubber balls are evenly fixedly connected to the surface of the rubber sleeve 68 to increase the friction force.

[0035] In this implementation: When it is necessary to detect the graphics card, apply force to the positioning post 26 to make the slider A24 slide inside the chute 21. When the slider A24 moves, the roller 23 will roll inside the limiting groove A22 due to the friction with the operating table 25, making the positioning post 26 smoother during use until the axes of the four positioning posts 26 and the positioning holes of the graphics card are the same. Then, the graphics card can be pressed down until the positioning post 26 is inserted into the positioning hole, thus realizing the positioning of the graphics card, which is convenient for preventing the graphics card from sliding during detection, resulting in incorrect detection and damage. The four positioning posts 26 are inserted into the positioning holes opened on the graphics card itself without contacting its surface, thus preventing scratches on its surface and damage to electronic components such as its resistance when contacting its surface. Then, hold the rubber sleeve 68 and apply force to it to drive the positioning shaft 62 to rotate inside the fixed plate 61. The rubber balls are provided on the surface of the rubber sleeve 68 to increase the roughness of the rubber sleeve 68, thus preventing slipping when holding the rubber sleeve 68. The rotation of the positioning shaft 62 will indirectly drive the gear 63 to rotate. The rotation of the gear 63 will cause the two toothed plates C64 engaged with it to move in opposite directions, thus driving the two positioning plates 65 to move towards the center. When the two positioning plates 65 move, they will drive the two sliders B66 to slide inside the limiting groove B67. The two limiting grooves B67 can prevent the movement track of the positioning plate 65 from changing until the two positioning plates 65 can contact the two sides of the graphics card. The graphics card is limited by the two positioning plates 65, so that the test points of the graphics card can correspond to the detection plug 5, realizing the limitation of the graphics card, preventing the graphics card from shaking, and achieving stability during detection. Then, the electric push rod 3 can be connected to an external power supply and started. The output shaft of the electric push rod 3 will drive the detection plug 5 to approach the detection end of the graphics card until they are in mutual contact. Then, the data inside the graphics card can be viewed through the display screen 4, and the position where the graphics card needs to be repaired can be clearly observed.

[0036] Furthermore:

[0037] In an alternative embodiment, the positioning post 26 has a cylindrical stepped structure, and such a structure can ensure that after the positioning post 26 is inserted into the positioning hole of the graphics card, the graphics card will not tilt when placed due to the contact between the electronic components such as the resistance on the bottom surface and the operating table 25. The end of the positioning post 26 away from the slider A24 has an arc structure to ensure that when the positioning post 26 is inserted into the positioning hole of the graphics card, the friction caused by hard contact with the surface of the graphics card is reduced, thereby preventing scratches on it.

[0038] In this embodiment: after the positioning post 26 is inserted into the positioning hole of the graphics card, the stepped structure of the positioning post 26 can make the back surface of the graphics card suspended, which not only prevents the surface of the back of the graphics card from being scratched due to contact with the operating table 25, but also may squeeze the electronic components on the back, resulting in damage. It can also prevent the electronic components on the back from protruding and contacting the operating table 25, causing the graphics card to be placed unevenly during maintenance, resulting in loose connection between the detection plug 5 and the detection end of the graphics card, and thus causing detection errors. When the positioning post 26 is inserted into the positioning hole of the graphics card, it will first contact the arc surface of the positioning post 26. Due to the characteristics of the arc surface, not only will the contact surface with the graphics card become smaller, but there is no sharp end, thus reducing the possibility of scratching the graphics card. Also due to the arc surface, the top surface of the positioning post 26 is smaller than the diameter of the positioning post 26, making it easier to insert into the positioning hole of the graphics card.

[0039] Furthermore:

[0040] In an alternative embodiment, a linkage rod 27 is fixedly connected to the surface of the slider A24. The linkage rod 27 is slidably connected to the operating table 25 through a chute 21. A limiting cylinder 211 is slidably connected to the surface of the linkage rod 27. A positioning ring 210 is rotatably connected to the surface of the limiting cylinder 211. A connecting rod 29 is fixedly connected to the surface of the positioning ring 210. One end of the connecting rod 29 away from the positioning ring 210 is fixedly connected to a positioning cylinder 28. The positioning cylinder 28 and the positioning column 26 are on the same axis. The positioning column 26 is inserted into the interior of the positioning cylinder 28. Two limiting grooves are symmetrically formed inside the linkage rod 27, and a toothed plate A215 is provided inside each limiting groove. The toothed plate A215 is slidably connected to the linkage rod 27 through the limiting groove. Two toothed plates B219 are symmetrically and fixedly connected to the interior of the limiting cylinder 211. The toothed plate B219 is meshed with the toothed plate A215. Two tension springs 218 are symmetrically and fixedly connected to the interior of each limiting groove. The two ends of the tension spring 218 are respectively fixedly connected to the linkage rod 27 and the toothed plate A215. Two limiting plates B217 are symmetrically and fixedly connected to the surface of each toothed plate A215. A limiting plate A216 is attached to the surface of the limiting plate B217. A spring A214 is provided above the linkage rod 27. One end of the limiting plate A216 away from the limiting plate B217 penetrates through the linkage rod 27 and is fixedly connected to the spring A214. The limiting plate A216 and the limiting plate B217 are of trapezoidal structures, and the inclined surfaces of the two trapezoids are attached to each other. By sliding the limiting plate A216 on the surface of the limiting plate B217, the toothed plate A215 is controlled to slide inside the limiting groove. A number of limiting holes A212 are evenly formed on the surface of the limiting cylinder 211. A plug 213 is provided inside each limiting hole A212. The plug 213 is slidably connected to the limiting cylinder 211 through the limiting hole A212. A toothed ring 223 is fixedly connected to the interior of the positioning ring 210. The toothed ring 223 is attached to the plug 213. One ends of the plug 213 and the toothed ring 223 close to each other are both arc-shaped surfaces, so that the positioning ring 210 can be rotated on the surface of the limiting cylinder 211 only when a relatively large force is applied to it.

[0041] In this embodiment: When a graphics card needs to be placed, first apply a force to the positioning cylinder 28, so that the positioning cylinder 28 rotates around the positioning ring 210 through the connecting rod 29. When the positioning ring 210 rotates on the surface of the limiting cylinder 211, the toothed ring 223 will squeeze the bolt 213. Due to the fact that the contact surfaces of both are arc surfaces, the bolt 213 will slide inward inside the limiting hole A212, and the spring A214 will thus be compressed until the position of the positioning cylinder 28 does not block the placement of the graphics card. When the force applied to the positioning cylinder 28 is stopped, the spring A214 will eject the bolt 213 from the inside of the limiting hole A212 due to elastic potential energy until the bolt 213 is inserted into the inside of the toothed ring 223, thereby limiting the positioning ring 210 to prevent self-rotation, and the positioning and locking of the positioning cylinder 28 is achieved. When the graphics card is successfully positioned, rotate the positioning cylinder 28 to the same axis as the positioning post 26, and then pull up the spring A214 to move the two limiting plates A216 upward, thereby releasing the inside of the limiting plate B217, so that the toothed plate A215 will slide inside the limiting groove due to the contraction of the tension spring 218, and the toothed plate A215 will move away from the toothed plate B219 until they no longer contact. The limiting cylinder 211 will move downward on the surface of the linkage rod 27 until the positioning post 26 is inserted into the inside of the positioning cylinder 28, and then press the spring A214 to make the toothed plate A215 and the toothed plate B219 mesh with each other to achieve the positioning of the positioning cylinder 28. The graphics card is positioned through the positioning cylinder 28 to prevent the graphics card from sliding up and down on the surface of the positioning post 26 due to accidental touch by the worker during maintenance. Since this accidental touch sliding is very likely not a vertical sliding of the graphics card, it will cause damage to the graphics card.

[0042] Furthermore:

[0043] In an alternative embodiment, a lighting lamp 220 is fixedly connected to the upper surface of the positioning cylinder 28. An accommodation hole A is provided inside the positioning cylinder 28. A pressure switch 221 is arranged inside the accommodation hole A. The pressure switch 221 is slidably connected to the positioning cylinder 28 through the accommodation hole A. An accommodation hole B is provided inside the connecting rod 29, and the accommodation hole A and the accommodation hole B communicate with each other. The lighting lamp 220 and the pressure switch 221 are connected to an external power supply through a power cord, and the power cord passes through the accommodation hole A and the accommodation hole B.

[0044] In this embodiment: When the positioning cylinder 28 moves downward and contacts the graphics card, the pressure switch 221 will be squeezed. The squeezing of the pressure switch 221 will cause the lighting lamp 220 to be powered on and emit light, thereby illuminating the surface of the graphics card, facilitating the worker to observe the surface of the graphics card, and thus facilitating the search for the maintenance point. When the positioning cylinder 28 is lifted, the pressure switch 221 will slide downward due to gravity, so that the lighting lamp 220 is powered off and turned off, which is more power-saving.

[0045] Furthermore:

[0046] In an alternative embodiment, a ratchet groove 69 is formed inside the gear 63, and a plurality of limiting holes B610 are evenly formed inside the positioning shaft 62. A ratchet tooth 611 is disposed inside each limiting hole B610. The ratchet tooth 611 is slidably connected to the positioning shaft 62 through the limiting hole B610. A spring B612 is disposed inside the limiting hole B610. Two ends of the spring B612 are fixedly connected to the ratchet tooth 611 and the positioning shaft 62 respectively.

[0047] In this embodiment: in order to prevent the graphics card from being bent due to excessive clamping force, when the two positioning plates 65 contact the graphics card and the force for limiting the gear 63 by the toothed plate C64 is greater than the elastic force of the spring B612, the ratchet tooth 611 will slide inside the limiting hole B610 due to being squeezed by the ratchet groove 69, and the spring B612 will be compressed, so that the positioning shaft 62 cannot drive the gear 63 to rotate, thus preventing the limiting clip from being deformed due to inaccurate force application.

[0048] Embodiment 2

[0049] In order to accurately match the positioning posts 26 with the positioning holes on the motherboard of the graphics card during the positioning of the graphics card, and to facilitate the control and adjustment of the accurate positions of the positioning posts 26, an electromagnetic positioning mechanism is added to the positioning assembly 2 in this embodiment.

[0050] As Figures 3 to 4 shown,

[0051] The electromagnetic positioning mechanism includes: a plurality of electromagnetic coils 224 embedded inside the operating table 25. Each electromagnetic coil 224 is located on one side of the sliding groove 21. The magnetic field direction of the electromagnetic coil 224 is the same as the moving direction of the slider A24. A control switch 225 is installed on the surface of the operating table 25. The electromagnetic coils 224 and the control switch 225 are both connected to an external control module. Here, the slider A24 is magnetized because it needs to cooperate with the electromagnetic coils 224.

[0052] In this embodiment: After manually operating to position and repair a graphics card, the position of the positioning post 26 can be recorded by pressing the corresponding button of the control switch 225. For example, the hole pitch of NVIDIA RTX 2070 is 48.5 mm. After recording the position of the positioning post 26, when encountering a graphics card with the same pitch again, by pressing the corresponding button of the control switch 225, through the program pre-written by the control module, the electromagnetic coil 224 connected to it will apply a magnetic force to the slider A24, causing the slider A24 to move inside the chute 21 until it automatically stops at an appropriate position, and then the positioning post 26 can be quickly and accurately moved to the appropriate position. Then, the limiting cylinder 211 is moved downward on the surface of the linkage rod 27 until the positioning post 26 is inserted into the positioning cylinder 28, and the graphics card is positioned through the positioning cylinder 28. The electric push rod 3 is connected to an external power supply and started. The output shaft of the electric push rod 3 will drive the detection plug 5 to approach the detection end of the graphics card until the two are in mutual contact, and then the data inside the graphics card can be viewed through the display screen 4, which is convenient for batch repair of graphics cards of the same model. Compared with the first embodiment, this method can quickly position graphics cards of the same size and model, and further reduces the possibility of scratching the surface of the graphics card by the positioning post 26.

[0053] Working principle and usage process of the present invention: When it is necessary to detect the graphics card, apply force to the positioning post 26 to make the slider A24 slide inside the chute 21. When the slider A24 moves, the roller 23 will roll inside the limiting groove A22 due to the friction with the operating table 25, making the positioning post 26 smoother during use until the axes of the four positioning posts 26 and the positioning holes of the graphics card are the same. Then, the graphics card can be pressed down until the positioning post 26 is inserted into the positioning hole, thus realizing the positioning of the graphics card, facilitating the detection of the graphics card and preventing the graphics card from sliding, resulting in incorrect detection and damage. Then, hold the rubber sleeve 68 and apply force to it, causing it to drive the positioning shaft 62 to rotate inside the fixed plate 61. The rotation of the positioning shaft 62 will indirectly drive the gear 63 to rotate. The rotation of the gear 63 will cause the two toothed plates C64 engaged with it to move in opposite directions, thereby driving the two positioning plates 65 to move towards the center. When the two positioning plates 65 move, they will drive the two sliders B66 to slide inside the limiting groove B67. The two limiting grooves B67 can prevent the movement trajectory of the positioning plate 65 from changing until the two positioning plates 65 can contact both sides of the graphics card. By means of the two positioning plates 65, the graphics card is limited, so that the test points of the graphics card can correspond to the detection plug 5, realizing the limitation of the graphics card, preventing the graphics card from shaking, and achieving stability during detection. Then, the electric push rod 3 can be connected to an external power supply and started. The output shaft of the electric push rod 3 will drive the detection plug 5 to approach the detection end of the graphics card until they are in contact with each other. Then, the data inside the graphics card can be viewed through the display screen 4, and the position where the graphics card needs to be repaired can be clearly observed. Due to the fact that the types and sizes of graphics cards are roughly divided into several fixed types, when encountering graphics cards of the same type, press the corresponding button of the control switch 225. Through the pre-written program, the electromagnetic coil 224 connected to its power supply will apply force to the slider A24, causing the slider A24 to move inside the chute 21 until it automatically stops at an appropriate position, realizing the rapid and accurate movement of the positioning post 26 to an appropriate position, facilitating the batch maintenance of graphics cards of the same model. When the positioning post 26 is inserted into the positioning hole of the graphics card, the stepped structure of the positioning post 26 can make the back of the graphics card suspended. This not only prevents the surface of the back of the graphics card from being scratched due to contact with the operating table 25, but also may squeeze the electronic components on the back, resulting in damage. It also prevents the electronic components on the back from protruding and contacting the operating table 25, causing the graphics card to be placed unevenly during maintenance, resulting in an insecure connection between the detection plug 5 and the detection end of the graphics card, and thus causing detection errors. When the positioning post 26 is inserted into the positioning hole of the graphics card, it will first contact the arc surface of the positioning post 26. Due to the characteristics of the arc surface, not only will the contact surface with the graphics card become smaller, but there is no sharp end, thus reducing the possibility of scratching the graphics card. Also, due to the arc surface, the top surface of the positioning post 26 is smaller than the diameter of the positioning post 26.Make it easier to insert into the positioning hole inside the graphics card. When the graphics card needs to be placed, first apply force to the positioning cylinder 28, so that the positioning cylinder 28 rotates around the positioning ring 210 as the axis through the connecting rod 29. When the positioning ring 210 rotates on the surface of the limiting cylinder 211, the toothed ring 223 will squeeze the pin 213. Due to the fact that the contact surfaces of both are arc surfaces, the pin 213 will slide inward inside the limiting hole A212, and the spring A214 will thus be compressed until the position of the positioning cylinder 28 does not block the placement of the graphics card. When the force applied to the positioning cylinder 28 stops, the spring A214 will eject the pin 213 from the inside of the limiting hole A212 due to its elastic potential energy until the pin 213 is inserted into the inside of the toothed ring 223, thereby limiting the positioning ring 210 and preventing it from rotating by itself, and the positioning and locking of the positioning cylinder 28 is achieved. When the graphics card is successfully positioned, rotate the positioning cylinder 28 to the same axis as the positioning post 26, and then pull up the spring A214 to move the two limiting plates A216 upward, thereby loosening the inside of the limiting plate B217, so that the toothed plate A215 will slide inside the limiting groove due to the contraction of the tension spring 218, and the toothed plate A215 will move away from the toothed plate B219 until they no longer contact. The limiting cylinder 211 will move downward on the surface of the linkage rod 27 until the positioning post 26 is inserted into the inside of the positioning cylinder 28. Then press the spring A214 to make the toothed plate A215 and the toothed plate B219 mesh with each other to achieve the positioning of the positioning cylinder 28. The graphics card is positioned through the positioning cylinder 28 to prevent the graphics card from sliding up and down on the surface of the positioning post 26 due to accidental contact by the worker during maintenance. When the positioning cylinder 28 moves downward and contacts the graphics card, the pressure switch 221 will be squeezed. The squeezing of the pressure switch 221 will make the lighting lamp 220 energized and emit light, thereby illuminating the surface of the graphics card, facilitating the worker to observe the surface of the graphics card, and thus facilitating the search for the maintenance point. When the positioning cylinder 28 is lifted, the pressure switch 221 will slide downward due to gravity, so that the lighting lamp 220 is powered off and turned off, which is more power-saving. In order to prevent the graphics card from being bent due to excessive clamping force, when the two positioning plates 65 contact the graphics card and the force of the toothed plate C64 limiting the gear 63 is greater than the elastic force of the spring B612, the ratchet tooth 611 will slide inside the limiting hole B610 due to being squeezed by the ratchet groove 69, and the spring B612 will be compressed, so that the rotation of the positioning shaft 62 cannot drive the gear 63 to rotate, and thus the limiting clip will not be deformed due to inaccurate force application.,

[0054] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.,

Claims

1. A computer graphics card maintenance and testing platform, comprising a workbench body (1), a positioning assembly (2) fixedly connected to the surface of the workbench body (1), and a limit assembly (6) arranged above the workbench body (1), the positioning assembly (2) comprising a mounting plate (222), an electric push rod (3) being mounted on the surface of the mounting plate (222) via a mounting seat, a display screen (4) being mounted on the surface of the mounting plate (222), a detection plug (5) being arranged above the workbench body (1), an output shaft of the electric push rod (3) passing through the surface of the mounting plate (222), the detection plug (5) being mounted on the surface of the output shaft of the electric push rod (3) via a mounting seat B, the detection plug (5) being connected to the display screen (4) via a power cord, characterized in that: The surface of the workbench body (1) is fixedly connected with an operating table (25), and four sliding grooves (21) are evenly arranged on the surface of the operating table (25). A slider A (24) is arranged inside each of the sliding grooves (21). The slider A (24) is slidably connected to the operating table (25) through the sliding grooves (21). A positioning column (26) is fixedly connected to the surface of the slider A (24). A limiting groove A (22) is arranged at a position corresponding to the sliding groove (21) inside the operating table (25), and the limiting grooves A (22) are mutually connected with the inside of the sliding groove (21). The internal bearing of the slider A (24) is rotatably connected with a roller (23), and the roller (23) is inserted inside the limiting groove A (22). The roller (23) can make the positioning column (26) smoother when moving.

2. The computer graphics card maintenance test platform according to claim 1, characterized in that: The operating table (25) is evenly inlaid with a plurality of electromagnetic coils (224), each of which is located on one side of the slide groove (21). The direction of the magnetic field of the electromagnetic coil (224) is consistent with the moving direction of the slider A (24). A control switch (225) is installed on the surface of the operating table (25). The electromagnetic coil (224) and the control switch (225) are both connected to an external control module. The slider A (24) is magnetized because it needs to cooperate with the electromagnetic coil (224).

3. The computer graphics card maintenance test platform according to claim 1, characterized in that: The positioning column (26) is a cylindrical stepped structure, and such a structure can ensure that after the positioning column (26) is inserted into the positioning hole of the graphics card, the graphics card will not be tilted when placed due to the contact between the electronic components such as the resistor on the bottom and the operating table (25). The end of the positioning column (26) away from the slider A (24) is in an arc structure, ensuring that when the positioning column (26) is inserted into the positioning hole of the graphics card, the friction force generated by the hard contact with the surface of the graphics card is reduced to reduce the scratches on the graphics card.

4. The computer graphics card maintenance and testing platform according to claim 3, characterized in that: The surface of the slider A (24) is fixedly connected with a linkage rod (27), and the linkage rod (27) is slidably connected to the operating table (25) through the slide groove (21), and the surface of the linkage rod (27) is slidably connected with a limiting cylinder (211), and the surface of the limiting cylinder (211) is rotatably connected with a positioning ring (210), and the surface of the positioning ring (210) is fixedly connected with a connecting rod (29), and one end of the connecting rod (29) away from the positioning ring (210) is fixedly connected with a positioning cylinder (28), and the positioning cylinder (28) and the positioning column (26) are coaxial, and the positioning column (26) is inserted into the interior of the positioning cylinder (28).

5. The computer graphics card maintenance and testing platform according to claim 4, characterized in that: A lighting lamp (220) is fixedly connected to the upper surface of the positioning cylinder (28); a receiving hole A is provided inside the positioning cylinder (28); a pressure switch (221) is provided inside the receiving hole A; the pressure switch (221) is slidably connected to the positioning cylinder (28) through the receiving hole A; a receiving hole B is provided inside the connecting rod (29); the receiving hole A and the receiving hole B are interconnected; the lighting lamp (220) and the pressure switch (221) are connected to an external power supply via a power cord; the power cord passes through the receiving hole A and the receiving hole B.

6. The computer graphics card maintenance and testing platform according to claim 4, characterized in that: The linkage rod (27) is symmetrically provided with two limit grooves inside, and each limit groove is provided with a tooth plate A (215), the tooth plate A (215) is slidably connected to the linkage rod (27) through the limit groove, the limit cylinder (211) is symmetrically fixedly connected with two tooth plates B (219), the tooth plate B (219) and the tooth plate A (215) are meshingly connected, and each limit groove is symmetrically fixedly connected with two tension springs (218), the tension springs (218) are The two ends are respectively fixedly connected to the linkage rod (27) and the tooth plate A (215); the surface of each tooth plate A (215) is symmetrically fixedly connected with two limit plates B (217); the surface of the limit plate B (217) is in contact with the limit plate A (216); a spring A (214) is arranged above the linkage rod (27); one end of the limit plate A (216) away from the limit plate B (217) passes through the linkage rod (27) and is fixedly connected to the spring A (214).

7. The computer graphics card maintenance and testing platform according to claim 6, characterized in that: The limiting plate A (216) and the limiting plate B (217) are of a trapezoidal structure, and the inclined surfaces of the two trapezoids fit each other. The limiting plate A (216) slides on the surface of the limiting plate B (217), thereby controlling the tooth plate A (215) to slide inside the limiting groove.

8. The computer graphics card maintenance and testing platform according to claim 4, characterized in that: A plurality of limiting holes A (212) are evenly formed on the surface of the limiting cylinder (211), and a latch (213) is arranged inside each of the limiting holes A (212). The latch (213) is slidably connected to the limiting cylinder (211) through the limiting hole A (212). A toothed ring (223) is fixedly connected inside the positioning ring (210), and the toothed ring (223) and the latch (213) are fitted with each other. The ends of the latch (213) and the toothed ring (223) that are close to each other are both arc-shaped surfaces, so that the positioning ring (210) can rotate on the surface of the limiting cylinder (211) only when a large force is applied to the positioning ring (210).

9. The computer graphics card maintenance and testing platform according to claim 1, characterized in that: A fixing plate (61) is fixedly connected to the surface of the workbench body (1), and a positioning shaft (62) is rotatably connected inside the fixing plate (61). A gear (63) is arranged at one end of the positioning shaft (62) close to the operating table (25). A limiting groove B (67) is provided inside the operating table (25), and two sliders B (66) are symmetrically arranged inside the limiting groove B (67). The surface of each slider B (66) is fixedly connected to a positioning plate (65), and adjacent surfaces of the two positioning plates (65) are fixedly connected to tooth plates C (64), and the two tooth plates C (64) are located on both sides of the gear (63). The two tooth plates C (64) are meshed with the gear (63), and a rubber sleeve (68) is sleeved on one end of the positioning shaft (62) away from the gear (63), and a plurality of rubber balls are evenly and fixedly connected to the surface of the rubber sleeve (68) for increasing friction.

10. The computer graphics card maintenance and testing platform according to claim 9, characterized in that: A ratchet groove (69) is provided inside the gear (63), and limiting holes B (610) are evenly provided inside the positioning shaft (62). A ratchet tooth (611) is provided inside each limiting hole B (610), and the ratchet tooth (611) is slidably connected to the positioning shaft (62) through the limiting hole B (610). A spring B (612) is provided inside the limiting hole B (610), and two ends of the spring B (612) are respectively fixedly connected to the ratchet tooth (611) and the positioning shaft (62).

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