PCB screen detection jig

Abstract

The utility model relates to the technical field of PCB screen detection, in particular to a PCB screen detection jig which comprises a jig base, accurate detection mechanisms are arranged on the inner wall of a placing table and the surface of a test screen, and convenient operation mechanisms are arranged on the inner wall of a test pressing plate and the surface of a guide rod. And overhaul and maintenance mechanisms are arranged on the inner walls of the jig base and the cover body. According to the utility model, the detection jig is more accurate when detecting the surface of the test screen, so that a user can conveniently detect the surface of the test screen when the detection jig is used, and the detection jig is more convenient and faster to operate and higher in working efficiency; and when the detection jig is used, a user can conveniently take down the cover body from the surface of the jig base and overhaul and maintain all parts in the jig base, so that the detection jig is more durable.

Description

Technical Field

[0001] This utility model relates to the field of PCB board screen inspection technology, specifically to a fixture for PCB board screen inspection. Background Technology

[0002] A PCB, or printed circuit board, is an important electronic component. It serves as a support for electronic components and provides electrical connections to them. To ensure that the PCB can function properly and that the display screen can display correctly after being connected to the PCB, it is necessary to test the PCB to ensure its proper functioning. Therefore, a fixture for testing PCB screens is needed.

[0003] Existing testing fixtures typically only inspect one type of PCB board. To inspect other PCB boards, the fixture and corresponding testing circuitry must be replaced, causing some inconvenience. Furthermore, existing testing fixtures have several drawbacks. Firstly, they require precise positioning of the test screen, which current fixtures lack, resulting in less accurate surface inspection. Secondly, they are not easy to operate, hindering user access to the test screen and reducing efficiency. Thirdly, they require regular maintenance of components, which is slow and difficult to perform. Removing the cover from the fixture base for internal maintenance makes the fixture less durable. Utility Model Content

[0004] The purpose of this utility model is to provide a PCB board screen inspection fixture to solve the problems mentioned in the background art, such as the inability to limit the placement of the test screen during use, the lack of labor-saving and convenient operation, and the lack of speed and smoothness in the inspection of various components.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixture for testing PCB screens, comprising a fixture base, a cover on the surface of the fixture base, a frame mounted on the top surface of the cover, a screen body mounted on the top surface of the cover, a rear connecting frame on the surface of the frame, a test handle on the surface of the connecting frame, the test handle rotatably engaging with the inner wall of the connecting frame, a movable frame on the surface of the connecting frame, the movable frame rotatably engaging with the surface of the connecting frame, a test pressure plate mounted on the bottom surface of the movable frame, test pins mounted on the surface of the test pressure plate, and guide rods for guiding the test pressure plate mounted on the surface of the frame. The bottom end of the guide rod is fixed to the surface of the cover. The guide rod slides against the inner wall of the test plate. A placement platform is installed on the top surface of the cover. A test screen is placed on the surface of the placement platform. A precision detection mechanism is provided on both the inner wall of the placement platform and the surface of the test screen. The precision detection mechanism contains a tension spring, a holding slot, and a precision detection assembly. A convenient operation mechanism is provided on both the inner wall of the test plate and the surface of the guide rod. The convenient operation mechanism contains an installation cylinder, a positioning clip, and a convenient operation component. A maintenance mechanism is provided on both the fixture base and the inner wall of the cover. The maintenance mechanism contains a locking block, an arc-shaped locking clip, a fixing block, a guide block, a spring body, and a fixing slot.

[0006] Preferably, a power supply is installed inside the fixture base, and a circuit board is installed inside the fixture base, connected to the power supply. A signal receiver is installed inside the fixture base, connected to the circuit board. The placement platform and the test screen are located below the test pressure plate. A compression spring is installed inside the placement platform, and the top of the compression spring is fixed to the surface at the bottom of the test screen. A power supply post for conducting electricity is installed on the surface at the bottom of the test screen. One end of the power supply post passes through the placement platform and the cover and extends into the interior of the fixture base. A current control switch and an on / off switch are installed on the surface at the top of the cover. A qualified lamp body and a defective lamp body are installed on the surface at the top of the cover.

[0007] Preferably, the precision detection group is set on the inner wall of the placement platform and the surface of the test screen. The precision detection group consists of a guide groove, a stabilizing suction cup and a moving block. The inner wall of the placement platform is provided with a holding groove, and the moving block is set inside the holding groove. The inner wall of the placement platform is provided with a guide groove, and the surfaces of the guide groove and the moving block slide against each other.

[0008] Preferably, the interior of each placement platform is provided with a stabilizing suction cup for positioning the test screen. The surface of the stabilizing suction cup is fixed to the surface of the moving block, and the surface of the stabilizing suction cup is in contact with the surface of the test screen. An extension spring is installed inside the holding slot, and one end of the extension spring is fixed to the surface of the moving block.

[0009] Preferably, the easy-to-operate component is disposed on the inner wall of the test plate and the surface of the guide rod. The easy-to-operate component consists of a fixing ring and a rotating ball. The inner wall of the test plate is provided with an installation cylinder. The surface of the installation cylinder is provided with a positioning clip. The positioning clip is engaged with the surface of the test plate. One end of the guide rod passes through the installation cylinder and extends to the bottom of the installation cylinder.

[0010] Preferably, a fixing ring is installed on the inner wall of the mounting cylinder, and the inner wall of the fixing ring is provided with equally spaced rotating balls. The rotating balls rotate and cooperate with the inner wall of the fixing ring, and the surface of the rotating balls contacts the surface of the guide rod.

[0011] Preferably, the surface of the cover is equipped with fixing blocks, the inner wall of the fixing blocks is provided with fixing grooves, the surfaces on both sides of the fixture base are equipped with guide blocks, the guide blocks slide with the inner wall of the fixing grooves, the guide blocks are snapped with the inner wall of the fixing blocks, and the inner wall of the cover is equipped with locking blocks, the locking blocks are snapped with the inner wall of the fixture base.

[0012] Preferably, each of the card blocks has an arc-shaped locking element on its surface. The arc-shaped locking element slides and engages with the inner wall of the card block. The arc-shaped locking element engages with the inner wall of the fixture base. Each of the arc-shaped locking elements has a spring body installed on its surface. One end of the spring body is fixed to the inner wall of the card block.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the PCB board screen inspection fixture not only makes it convenient for users to place the test screen on the surface of the platform, making the inspection fixture more accurate when inspecting the surface of the test screen, but also makes it more convenient for users to inspect the surface of the test screen, making the operation of the inspection fixture more convenient and faster, and improving work efficiency. In addition, it makes it convenient for users to remove the cover from the surface of the fixture base to inspect and maintain the various components inside the fixture base, making the inspection fixture more durable.

[0014] 1. By setting up a precise detection mechanism, the test screen to be tested is placed on the surface of the placement stage. Under the elastic force of the extension spring inside the holding slot, the moving block moves, causing the moving block to slide inside the guide groove. Under the action of the guide groove, the moving block is guided. When the moving block moves, it drives the stabilizing suction cup to move to contact the surface of the test screen. Under the action of the stabilizing suction cup, the test screen is clamped and limited on the surface of the placement stage, thus positioning the test screen. This realizes the function of limiting the placement of the test screen by the detection fixture, making it convenient for users to place the test screen on the surface of the placement stage when using the detection fixture, and making the detection fixture more accurate when testing the surface of the test screen.

[0015] 2. With a convenient operating mechanism, the user places the mounting cylinders on the surface of the test plate, causing the mounting cylinders to engage with the positioning clips on the test plate. The positioning clips hold the mounting cylinders in place on the test plate. When the test plate moves on the guide rod, the guide rod drives the rotating ball bearings to rotate on the fixed ring. The rotating ball bearings prevent jamming during the test plate's movement on the guide rod, making the testing fixture easier to operate and achieving a labor-saving operation. This allows users to easily inspect the surface of the test screen, making the fixture more convenient, faster, and more efficient.

[0016] 3. By incorporating a maintenance mechanism, when any components inside the fixture base are damaged, the user can perform maintenance on the interior of the fixture base. The user pulls down the cover on the surface of the fixture base, causing the cover to move the locking block away from the surface of the fixture base. At this time, under the elastic force of the spring body, the fixing block is moved away from the interior of the fixture base. The cover then moves the fixing block, causing the guide block to slide inside the fixing groove. Under the combined action of the guide block and the fixing groove, the cover is guided, thus removing it from the surface of the fixture base for maintenance. This allows for convenient maintenance of the components inside the fixture base, making it easier for users to remove the cover from the surface of the fixture base for maintenance and making the fixture more durable. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0019] Figure 3This is a top view enlarged cross-sectional structural schematic diagram of the present invention;

[0020] Figure 4 For the present utility model Figure 2 A magnified structural diagram of the precision testing institution;

[0021] Figure 5 For the present utility model Figure 2 An enlarged schematic diagram of the convenient operating mechanism;

[0022] Figure 6 This is an enlarged structural diagram of the inspection and maintenance mechanism of this utility model.

[0023] In the diagram: 1. Fixture base; 101. Cover; 102. Frame; 103. Screen body; 104. Power supply; 105. Test handle; 106. Connecting frame; 107. Moving frame; 108. Test pressure plate; 109. Guide rod; 110. Placement platform; 111. Compression spring; 112. Power supply column; 113. Test screen; 114. Current control switch; 115. On / off switch; 116. Signal receiver; 117. Circuit board; 118. Defective lamp body; 119. 1. Qualified lamp body; 2. Precision detection mechanism; 21. Extension spring; 22. Holding slot; 23. Precision detection group; 231. Guide slot; 232. Stabilizing suction cup; 233. Moving block; 3. Convenient operation mechanism; 31. Mounting cylinder; 32. Positioning clip; 33. Convenient operation component; 331. Fixing ring; 332. Rotating ball; 4. Inspection and maintenance mechanism; 41. Clip; 42. Arc-shaped clip; 43. Fixing block; 44. Guide block; 45. Spring body; 46. Fixing slot. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. In addition, the terms "first", "second", "third", "upper", "lower", "left", "right", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. 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 an indirect connection through an intermediate medium. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0025] This utility model provides a structure for a PCB board screen inspection fixture, as shown in the following figure. Figure 1 and Figure 2 As shown, the device includes a fixture base 1, a cover 101 on the surface of the fixture base 1, a power supply 104 installed inside the fixture base 1, a circuit board 117 installed inside the fixture base 1 and connected to the power supply 104, a signal receiver 116 installed inside the fixture base 1 and connected to the circuit board 117, a frame 102 mounted on the top surface of the cover 101, and a screen body 103 mounted on the top surface of the cover 101. A connecting frame 106 is provided on the surface of frame 102. A test handle 105 is provided on the surface of the connecting frame 106. The test handle 105 rotates with the inner wall of the connecting frame 106. A movable frame 107 is provided on the surface of the connecting frame 106. The movable frame 107 rotates with the surface of the connecting frame 106. A test pressure plate 108 is installed on the surface of the bottom position of the movable frame 107. Test pins are installed on the surface of the test pressure plate 108. Guides for guiding the test pressure plate 108 are installed on the surface of the frame 102. The bottom end of the guide rod 109 is fixed to the surface of the cover 101. The guide rod 109 slides against the inner wall of the test plate 108. A placement platform 110 is installed on the top surface of the cover 101, and a test screen 113 is placed on the surface of the placement platform 110. The placement platform 110 and the test screen 113 are located below the test plate 108. A compression spring 111 is installed inside the placement platform 110. The top end of the compression spring 111 is flush with the bottom surface of the test screen 113. The test screen 113 is fixed, and power supply posts 112 for conducting electricity are installed on the bottom surface. One end of the power supply post 112 passes through the placement platform 110 and the cover 101 and extends into the interior of the fixture base 1. A current control switch 114 is installed on the top surface of the cover 101. An on / off switch 115 is installed on the top surface of the cover 101. A qualified lamp body 119 is installed on the top surface of the cover 101. A defective lamp body 118 is installed on the top surface of the cover 101.

[0026] Furthermore, such as Figure 2 and Figure 3As shown, both the inner wall of the placement stage 110 and the surface of the test screen 113 are equipped with precision detection mechanisms 2. The precision detection mechanism 2 includes a tension spring 21, a holding slot 22, and a precision detection assembly 23. The precision detection assembly 23 is located on both the inner wall of the placement stage 110 and the surface of the test screen 113. The precision detection assembly 23 consists of a guide groove 231, a stabilizing suction cup 232, and a moving block 233. The inner wall of the placement stage 110 is provided with a holding slot 22, and the moving block 233 is installed inside the holding slot 22. The inner wall of the placement platform 110 is provided with guide grooves 231, and the guide grooves 231 and the surface of the moving block 233 slide against each other. The interior of the placement platform 110 is provided with a stabilizing suction cup 232 for limiting the placement of the test screen 113. The surface of the stabilizing suction cup 232 is fixed to the surface of the moving block 233 and the surface of the stabilizing suction cup 232 is in contact with the surface of the test screen 113. The interior of the holding slot 22 is equipped with a tension spring 21, and one end of the tension spring 21 is fixed to the surface of the moving block 233.

[0027] During implementation, the test screen 113 to be tested is placed on the surface of the placement stage 110. Under the elastic force of the extension spring 21 inside the holding slot 22, the moving block 233 is driven to move, so that the moving block 233 slides inside the guide slot 231. Under the action of the guide slot 231, the moving block 233 is guided. When the moving block 233 moves, the moving block 233 drives the stabilizing suction cup 232 to move to contact the surface of the test screen 113. Under the action of the stabilizing suction cup 232, the test screen 113 is clamped and limited on the surface of the placement stage 110, and the test screen 113 is positioned and placed, so as to realize the function of limiting the placement of the test screen 113 by the testing fixture.

[0028] Furthermore, such as Figure 2 and Figure 4 As shown, the inner wall of the test plate 108 and the surface of the guide rod 109 are both provided with a convenient operation mechanism 3. The convenient operation mechanism 3 includes an installation cylinder 31, a positioning clip 32, and a convenient operation component 33. The convenient operation component 33 is set on the inner wall of the test plate 108 and the surface of the guide rod 109. The convenient operation component 33 is composed of a fixing ring 331 and a rotating ball 332. The inner wall of the test plate 108 is provided with an installation cylinder 31. The surface of the installation cylinder 31 is provided with a positioning clip 32. The positioning clip 32 and the surface of the test plate 108 are engaged with each other. One end of the guide rod 109 passes through the installation cylinder 31 and extends to the bottom of the installation cylinder 31. The inner wall of the installation cylinder 31 is provided with a fixing ring 331. The inner wall of the fixing ring 331 is provided with rotating balls 332 at equal intervals. The rotating balls 332 and the inner wall of the fixing ring 331 rotate with each other. The surface of the rotating balls 332 is in contact with the surface of the guide rod 109.

[0029] During implementation, the user places the mounting cylinder 31 on the surface of the test plate 108, causing the mounting cylinder 31 to drive the positioning clip 32 to lock onto the surface of the test plate 108. Under the action of the positioning clip 32, the mounting cylinder 31 is positioned and installed on the surface of the test plate 108. When the test plate 108 moves on the surface of the guide rod 109, the guide rod 109 drives the rotating ball 332 to rotate on the surface of the fixing ring 331. Under the action of the rotating ball 332, the test plate 108 is less likely to jam when moving on the surface of the guide rod 109, making the test fixture more convenient to operate and realizing the function of labor-saving operation of the test fixture.

[0030] Furthermore, such as Figure 2 and Figure 5 As shown, both the fixture base 1 and the inner wall of the cover 101 are equipped with maintenance mechanisms 4. The maintenance mechanism 4 includes a locking block 41, an arc-shaped locking element 42, a fixing block 43, a guide block 44, a spring body 45, and a fixing groove 46. Fixing blocks 43 are installed on the surface of the cover 101, and fixing grooves 46 are formed on the inner walls of the fixing blocks 43. Guide blocks 44 are installed on both sides of the fixture base 1. The guide blocks 44 slide against the inner walls of the fixing grooves 46, guiding the movement of the spring. The inner walls of block 44 and fixed block 43 are engaged with each other. The inner walls of cover 101 are all equipped with locking blocks 41. The locking blocks 41 are engaged with the inner walls of fixture base 1. The surface of the locking blocks 41 is provided with arc-shaped locking parts 42. The arc-shaped locking parts 42 are engaged with the inner walls of the locking blocks 41. The arc-shaped locking parts 42 are engaged with the inner walls of fixture base 1. The surface of the arc-shaped locking parts 42 is equipped with spring bodies 45. One end of the spring body 45 is fixed to the inner wall of the locking block 41.

[0031] During implementation, when any component inside the fixture base 1 is damaged, the user needs to inspect and maintain the interior of the fixture base 1. The user pulls down the cover 101 on the surface of the fixture base 1, causing the cover 101 to move the locking block 41 away from the surface of the fixture base 1. At this time, under the elastic force of the spring body 45, the fixing block 43 is moved away from the interior of the fixture base 1. The cover 101 moves the fixing block 43, causing the guide block 44 to slide inside the fixing groove 46. Under the combined action of the guide block 44 and the fixing groove 46, the cover 101 is guided, thereby removing the cover 101 from the surface of the fixture base 1. The components inside the fixture base 1 are then inspected and maintained, thus realizing the function of conveniently inspecting and maintaining the components inside the fixture base 1.

[0032] Working principle: In use, first place the fixture base 1 at the designated position, then place the test screen 113 to be tested on the surface of the placement stage 110. Under the elastic force of the extension spring 21 inside the holding groove 22, the moving block 233 moves, causing the moving block 233 to slide inside the guide groove 231. Under the action of the guide groove 231, the moving block 233 is guided. When the moving block 233 moves, it drives the stabilizing suction cup 232 to move to contact the surface of the test screen 113. Under the action of the stabilizing suction cup 232, the test screen 113 is clamped and limited on the surface of the placement stage 110, thus positioning the test screen 113. This realizes the function of limiting the placement of the test screen 113 by the testing fixture, making it convenient for the user to place the test screen 113 on the surface of the placement stage 110, and making the testing fixture more accurate when testing the surface of the test screen 113.

[0033] Subsequently, the user pulls the test handle 105 on the surface of the connecting frame 106, causing the connecting frame 106 to rotate on the surface of the test handle 105. At this time, the moving frame 107 drives the test pressure plate 108 to move downward. The test pressure plate 108 slides on the surface of the guide rod 109, and is guided by the guide rod 109 to move downward until it contacts the surface of the test screen 113 placed on the surface of the placement stage 110. At this time, the test pressure plate 108 drives the test pin to move downward until it contacts the surface of the test screen 113. At this time, the test screen 113 presses down against the compression spring 111 on the inner wall of the placement stage 110, causing the test screen 113 to move until it contacts the surface of the power supply post 112. When one end of the power supply post 112 moves into the interior of the fixture base 1, it is powered by the power supply 104 to push the circuit board 117. When the power supply is activated, the internal components of the placement platform 110 are automatically powered on, and the test screen 113 placed on the surface of the placement platform 110 is subjected to relevant performance tests. The user can observe the screen body 103 and compare the overall performance of the test screen 113. When the test result is qualified, the qualified lamp body 119 emits light; if it is unqualified, the unqualified lamp body 118 emits light. After the test is completed, the test handle 105 is pulled upwards, and the test handle 105 drives the test pressure plate 108 to rise to the required position, thereby de-energizing the surface of the placement platform 110. The user can observe the test results of the current and voltage of the test screen 113 by observing the screen body 103. By operating the on / off switch 115, the power supply column 112 can be de-energized, and by operating the current control switch 114, the voltage inside the placement platform 110 can be adjusted.

[0034] Subsequently, the user places the mounting cylinder 31 on the surface of the test plate 108, causing the mounting cylinder 31 to engage with the positioning clip 32 on the surface of the test plate 108. Under the action of the positioning clip 32, the mounting cylinder 31 is positioned and installed on the surface of the test plate 108. When the test plate 108 moves on the surface of the guide rod 109, the guide rod 109 drives the rotating ball 332 to rotate on the surface of the fixing ring 331. Under the action of the rotating ball 332, the test plate 108 is less likely to jam when moving on the surface of the guide rod 109, making the test fixture more convenient to operate and realizing the function of labor-saving operation of the test fixture. This makes it easier for the user to test the surface of the test screen 113, making the test fixture more convenient and faster to operate and more efficient.

[0035] Subsequently, when any component inside the fixture base 1 is damaged, the user needs to inspect and maintain the interior of the fixture base 1. The user pulls down the cover 101 on the surface of the fixture base 1, causing the cover 101 to move the locking block 41 away from the surface of the fixture base 1. At this time, under the elastic force of the spring body 45, the fixing block 43 is moved away from the interior of the fixture base 1. The cover 101 moves the fixing block 43, causing the guide block 44 to slide inside the fixing groove 46. Under the combined action of the guide block 44 and the fixing groove 46, the cover 101 is guided, thereby removing the cover 101 from the surface of the fixture base 1. The components inside the fixture base 1 are then inspected and maintained. This allows the testing fixture to be conveniently inspected and maintained, making it more durable and ultimately completing the use of the testing fixture.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A PCB screen detection jig, comprising a jig base (1), characterized in that: The surface of the tool base (1) is provided with a cover (101), the surface of the top of the cover (101) is provided with a frame (102), the surface of the top of the cover (101) is provided with a screen body (103), the surface of the frame (102) is provided with a rear connecting frame (106), the surface of the connecting frame (106) is provided with a test handle (105), the test handle (105) and the inner wall of the connecting frame (106) are rotatably connected, the surface of the connecting frame (106) is provided with a moving frame (107), the moving frame (107) and the surface of the connecting frame (106) are rotatably connected, the surface of the bottom of the moving frame (107) is provided with a test pressing plate (108), the surface of the test pressing plate (108) is provided with a test probe, the surface of the frame (102) is provided with a guide rod (109) for guiding the test pressing plate (108), the bottom end of the guide rod (109) is fixed with the surface of the cover (101), the guide rod (109) and the inner wall of the test pressing plate (108) are slidably connected, the surface of the top of the cover (101) is provided with a placing table (110), the surface of the placing table (110) is provided with a test screen (113), the inner wall of the placing table (110) and the surface of the test screen (113) are provided with a precision detection mechanism (2), the precision detection mechanism (2) comprises an extension spring (21), a containing groove (22) and a precision detection group (23), the inner wall of the test pressing plate (108) and the surface of the guide rod (109) are provided with a convenient operation mechanism (3), the convenient operation mechanism (3) comprises an installation cylinder (31), a positioning clamp (32) and a convenient operation assembly (33), the inner wall of the tool base (1) and the cover (101) are provided with a maintenance mechanism (4), the maintenance mechanism (4) comprises a clamping block (41), an arc clamp (42), a fixed block (43), a guide block (44), a spring body (45) and a fixed groove (46).

2. The PCB screen detection fixture according to claim 1, wherein: The inside of the jig base (1) is provided with a power supply (104), the inside of the jig base (1) is provided with a circuit board (117), the circuit board (117) is connected with the power supply (104), the inside of the jig base (1) is provided with a signal receiver (116), the signal receiver (116) is connected with the circuit board (117), the placing table (110) and the test screen (113) are respectively located below the test pressing plate (108), the inside of the placing table (110) is provided with a compression spring (111), the top end of the compression spring (111) is fixed with the surface at the bottom position of the test screen (113), the surface at the bottom position of the test screen (113) is provided with a power supply column (112) for conducting electricity, one end of the power supply column (112) penetrates the placing table (110) and the cover (101) in turn and extends to the inside of the jig base (1), the surface at the top position of the cover (101) is provided with a current control switch (114), the surface at the top position of the cover (101) is provided with an on-off switch (115), the surface at the top position of the cover (101) is provided with a qualified lamp body (119), and the surface at the top position of the cover (101) is provided with an unqualified lamp body (118).

3. The PCB screen detection fixture of claim 1, wherein: The precise detection group (23) is arranged on the inner wall of the placing table (110) and the surface of the test screen (113), the precise detection group (23) is composed of a guide groove (231), a stable suction cup (232) and a moving block (233), the inner wall of the placing table (110) is provided with a containing groove (22), the inside of the containing groove (22) is provided with a moving block (233), and the inner wall of the placing table (110) is provided with a guide groove (231), the guide groove (231) and the surface of the moving block (233) are slidably connected.

4. The PCB screen detection fixture of claim 1, wherein: The inside of the placing table (110) is provided with a stable suction cup (232) for limiting the placement of the test screen (113), the surface of the stable suction cup (232) is fixed with the surface of the moving block (233), the surface of the stable suction cup (232) is in contact with the surface of the test screen (113), and the inside of the containing groove (22) is provided with an extension spring (21), one end of the extension spring (21) is fixed with the surface of the moving block (233).

5. The PCB screen detection fixture of claim 1, wherein: The convenient operation assembly (33) is arranged on the inner wall of the test pressing plate (108) and the surface of the guide rod (109), the convenient operation assembly (33) is composed of a fixed ring (331) and a rotating ball (332), the inner wall of the test pressing plate (108) is provided with a mounting cylinder (31), the surface of the mounting cylinder (31) is provided with a positioning clamp (32), the positioning clamp (32) and the surface of the test pressing plate (108) are mutually clamped and matched, and one end of the guide rod (109) penetrates the mounting cylinder (31) and extends below the mounting cylinder (31).

6. The PCB screen detection fixture of claim 5, wherein: The inner wall of the mounting cylinder (31) is mounted with a fixing ring (331), the inner wall of the fixing ring (331) is provided with rotating balls (332) at equal intervals, the rotating balls (332) are in mutual rotating fit with the inner wall of the fixing ring (331), and the surface of the rotating balls (332) is in contact with the surface of the guide rod (109).

7. The PCB screen detection fixture of claim 1, wherein: The surface of the cover body (101) is mounted with a fixing block (43), the inner wall of the fixing block (43) is provided with a fixing groove (46), the surface of the two sides of the jig base (1) is mounted with a guide block (44), the guide block (44) and the inner wall of the fixing groove (46) are in mutual sliding fit, the guide block (44) and the inner wall of the fixing block (43) are in mutual clamping fit, the inner wall of the cover body (101) is mounted with a clamping block (41), and the clamping block (41) and the inner wall of the jig base (1) are in mutual clamping fit.

8. The PCB screen detection fixture of claim 7, wherein: The surface of the clamping block (41) is provided with an arc-shaped clamping piece (42), the arc-shaped clamping piece (42) and the inner wall of the clamping block (41) are in mutual sliding fit, the arc-shaped clamping piece (42) and the inner wall of the jig base (1) are in mutual clamping fit, and the surface of the arc-shaped clamping piece (42) is mounted with a spring body (45), one end of the spring body (45) is fixed with the inner wall of the clamping block (41).

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