Communication circuit board testing tool

Abstract

The invention belongs to the technical field of circuit board detection, and particularly relates to a communication circuit board testing tool which comprises a bottom plate, a controller is fixedly connected to the upper side wall of the bottom plate, two supporting plates are symmetrically and fixedly connected to the two sides of the upper surface of the bottom plate, and the upper ends of the two supporting plates are fixedly connected with the same testing seat. And a test assembly is arranged in the test seat. When hole sites with different sizes of different circuit boards are tested, the size of the test assembly can be automatically adjusted to be matched with the holes of the circuit boards, insertion columns with different sizes do not need to be additionally prepared, and the use convenience of the test tool is improved; and after the circuit board is adsorbed and before the circuit board is placed at a test station, the position of the circuit board can be automatically adjusted, so that the circuit board is located at a set detection position, and the problem that the hole position is misjudged and unqualified due to the fact that the circuit board is placed incorrectly is avoided.

Description

Technical Field

[0001] This invention belongs to the field of circuit board testing technology, and in particular relates to a testing tool for communication circuit boards. Background Technology

[0002] After the circuit board is manufactured, it needs to be tested, such as the hole positions on the circuit board. If the hole positions are incorrect, the circuit board will not be able to be installed smoothly and will affect the application of the circuit board. For example, the communication circuit board testing tool disclosed in patent publication number CN217465584U.

[0003] Current communication circuit board testing tools suffer from two key problems in practical operation, directly affecting testing efficiency and accuracy, as follows: Firstly, in the circuit board positioning and transfer process, the tool needs to use a suction cup to transfer the circuit board to the inspection station to complete the hole position inspection. However, in the current process, the circuit board needs to be manually pressed and placed in the designated position. If the placement is offset (even if the offset is small), after the suction cup is transferred to the inspection station, even if the hole position of the circuit board itself meets the standard, the insertion post used for inspection is difficult to accurately insert into the hole, which ultimately leads to the equipment misjudging "hole position unqualified" and interfering with the normal test results. Secondly, when adapting to hole position detection on circuit boards of different specifications, since the detection pin size is fixed, operators need to frequently change the corresponding pin size for holes of different diameters. Circuit boards usually contain a large number of holes, and the hole diameters of each hole may vary greatly. On the one hand, a large number of pins of various specifications need to be prepared in advance, which greatly increases the difficulty of pin storage and management. On the other hand, frequent and large-scale pin replacement operations not only significantly increase the workload of operators, but also make it very easy to select the wrong pin size due to human error, thereby directly reducing the accuracy of hole position detection and affecting the reliability of testing.

[0004] To address these issues, a communication circuit board testing tool is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a testing tool for communication circuit boards.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a communication circuit board testing tool, comprising a base plate, a controller fixedly connected to the upper side wall of the base plate, two support plates symmetrically fixedly connected to both sides of the upper surface of the base plate, a common test seat fixedly connected to the upper ends of the two support plates, a test assembly provided inside the test seat, and further comprising: A connecting cover is fixedly connected to the upper side wall of the base plate. A servo motor located inside the connecting cover is fixedly connected to the upper side wall of the base plate. The output end of the servo motor is rotatably connected to the connecting cover through a bearing. A rotating plate is fixedly connected to the output end of the servo motor through the connecting cover. An electric push rod is fixedly connected to the upper side wall of the rotating plate. An adsorption component is fixedly connected to the moving end of the electric push rod. An adjustment component, located inside the test socket, is used to adjust the position of the circuit board.

[0007] Preferably, the testing assembly includes multiple grooves formed on the upper sidewall of the testing base, the multiple grooves being distributed according to the positions of the holes on the circuit board surface. An air supply chamber located below the multiple grooves is formed inside the testing base. An air supply hole is formed between the air supply chamber and the groove. A test cylinder covering the outside of the air supply hole is fixedly connected to the inner wall of the groove. A connecting plate is fixedly connected to the inner wall of the test cylinder. A lifting plate is connected to the upper sidewall of the connecting plate via a spring. A test tube is fixedly connected to the upper sidewall of the lifting plate. The test tube and the connecting plate are connected by the same telescopic tube. The upper end of the telescopic tube passes through the lifting plate and communicates with the test tube. A first control valve is provided inside the telescopic tube. A hollow rubber ball is fixedly connected to the upper end of the test tube. An air pump is fixedly connected to the lower sidewall of the testing base. The air outlet of the air pump is connected to the air supply chamber. A second control valve is provided at the air outlet of the air pump. A short pipe is fixedly connected to the air outlet of the air pump. A third control valve is provided inside the short pipe. Two diameter measuring components are provided in the groove.

[0008] Preferably, the diameter measuring assembly includes an elastic rod, the upper end of which is fixedly connected to a measuring box. A transverse plate is connected to the inner wall of the measuring box on the side away from the hollow rubber ball via a spring. A laser ranging probe is fixedly connected to the inner wall of the measuring box on the side away from the hollow rubber ball. The laser ranging probe is electrically connected to a controller. A transverse pin is fixedly connected to the side wall of the transverse plate on the side away from the spring. The end of the transverse pin away from the transverse plate extends out of the measuring box and is fixedly connected to a top plate. The transverse pin is movably inserted into the side wall of the measuring box. Two top plates located on the outer side of the same hollow rubber ball are symmetrically arranged.

[0009] Preferably, the adjustment assembly includes a hollow cavity formed inside the test seat. The cavity wall of the hollow cavity has four transverse cavities. The air inlet of the air pump is connected to the hollow cavity. The air inlet of the air pump is provided with a fourth control valve. The pipe wall of the air inlet of the air pump is fixedly connected to a vent pipe. A fifth control valve is provided inside the vent pipe. A retaining ring is fixedly connected to the inner wall of the transverse cavity. A piston plate is connected to the side wall of the retaining ring away from the hollow cavity by a spring. A crossbar is fixedly connected to the side wall of the piston plate away from the spring. An adjustment plate is fixedly connected to the end of the crossbar that extends out of the transverse cavity.

[0010] Preferably, the adsorption assembly includes a support plate fixedly connected to the moving end of an electric push rod. A vertical cylinder is fixedly connected to the lower side wall of the support plate. A hollow disk is fixedly connected to the lower end of the vertical cylinder. The vertical cylinder and the hollow disk are connected. A movable plate is slidably arranged inside the hollow disk. Multiple springs are fixedly connected between the movable plate and the hollow disk. A fixed column is fixedly connected to the lower side wall of the movable plate. A sliding opening matching the fixed column is opened on the lower side wall of the hollow disk. The lower end of the fixed column passes through the sliding opening and is fixedly connected to an adsorption box. An air pump is fixedly connected to the upper side wall of the adsorption box. The air pump's suction end is connected to the adsorption box. A one-way valve is provided on the air pump's suction end. A pressure sensor is provided on the inner wall of the adsorption box. Multiple suction cups are fixedly connected to the lower side wall of the adsorption box.

[0011] Preferably, a small hydraulic cylinder is fixedly connected to the upper inner wall of the vertical cylinder, and a friction plate is fixedly connected to the moving end of the small hydraulic cylinder.

[0012] Preferably, the upper side wall of the adsorption box is fixedly connected to a pressure relief pipe, and a control valve is provided inside the pressure relief pipe.

[0013] Preferably, a trigger switch is fixedly connected to the inner wall of the test cylinder, and the trigger switch will be pressed during the downward movement of the lifting plate. Multiple indicator lights are fixedly connected to the outer wall of the test base, and the trigger switch and the corresponding indicator lights are electrically connected.

[0014] Compared with existing technologies, the advantages of a communication circuit board testing tool are: 1. By setting up the test components, when testing different sizes of holes on different circuit boards, the size of the test components can be automatically adjusted to match the holes on the circuit board, eliminating the need to prepare additional posts of different sizes and improving the convenience of using the test tools.

[0015] 2. Through the set adsorption and adjustment components, after the circuit board is adsorbed and placed in the testing station, the position of the circuit board can be automatically adjusted so that the circuit board is in the set detection position, avoiding the problem of misjudgment of hole position due to incorrect placement of the circuit board.

[0016] 3. The diameter measuring component can automatically detect the size of the hollow rubber ball during the adjustment process, further ensuring the accuracy of the hollow rubber ball size adjustment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a communication circuit board testing tool provided by the present invention; Figure 2 This is a schematic diagram of the adsorption component in a communication circuit board testing tool provided by the present invention; Figure 3 This is a schematic diagram of the internal structure of the adsorption box in a communication circuit board testing tool provided by the present invention; Figure 4 This is a schematic diagram of the structure of a test component in a communication circuit board test tool provided by the present invention; Figure 5 This is a schematic diagram showing the positional relationship between the connecting cover and the servo motor in a communication circuit board testing tool provided by the present invention; Figure 6 This is a schematic diagram of the internal structure of the measuring box in a communication circuit board testing tool provided by the present invention; Figure 7 This is a schematic diagram of the internal structure of the test cylinder in a communication circuit board testing tool provided by the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Base plate, 2. Controller, 3. Support plate, 4. Test base, 5. Connecting cover, 6. Servo motor, 7. Rotating plate, 8. Electric push rod, 9. Test assembly, 91. Groove, 92. Air supply chamber, 10. Air supply hole, 11. Test cylinder, 12. Connecting plate, 13. Lifting plate, 14. Test tube, 15. Telescopic tube, 16. First control valve, 17. Hollow rubber ball, 18. Trigger switch, 19. Air pump, 20. Second control valve, 21. Short tube, 22. Third control valve, 23. Diameter measuring assembly, 231. Elastic rod, 232. Measuring box, 24. Horizontal movement plate, 25. Laser rangefinder probe, 2 6. Horizontal pin, 27. Top plate, 28. Adsorption assembly, 281. Bearing plate, 282. Vertical cylinder, 29. Hollow disc, 30. Moving plate, 31. Fixed column, 32. Sliding port, 33. Adsorption box, 34. Suction pump, 35. One-way valve, 36. Pressure sensor, 37. Suction cup, 38. Small hydraulic cylinder, 39. Friction plate, 40. Adjustment assembly, 401. Hollow cavity, 402. Horizontal cavity, 41. Fourth control valve, 42. Vent pipe, 43. Fifth control valve, 44. Retaining ring, 45. Piston plate, 46. Horizontal bar, 47. Adjustment plate, 48. Pressure relief pipe, 49. Control valve, 50. Indicator light. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] like Figures 1-7 As shown, a communication circuit board testing tool includes a base plate 1, a controller 2 fixedly connected to the upper side wall of the base plate 1, two support plates 3 symmetrically fixedly connected to both sides of the upper surface of the base plate 1, and a common test socket 4 fixedly connected to the upper ends of the two support plates 3. The test socket 4 contains a test assembly 9, and also includes: A connecting cover 5 is fixedly connected to the upper side wall of the base plate 1. A servo motor 6 located inside the connecting cover 5 is fixedly connected to the upper side wall of the base plate 1. The output end of the servo motor 6 is rotatably connected to the connecting cover 5 through a bearing. A rotating plate 7 is fixedly connected to the output end of the servo motor 6 through the connecting cover 5. An electric push rod 8 is fixedly connected to the upper side wall of the rotating plate 7. An adsorption component 28 is fixedly connected to the moving end of the electric push rod 8. Adjustment component 40, located inside test socket 4, is used to adjust the position of the circuit board.

[0021] The test assembly 9 includes multiple grooves 91 formed on the upper sidewall of the test base 4. The grooves 91 are distributed according to the positions of the holes on the circuit board surface. An air supply chamber 92 is formed inside the test base 4, located below the multiple grooves 91. An air supply hole 10 is formed between the air supply chamber 92 and the grooves 91. A test cylinder 11 covering the outside of the air supply hole 10 is fixedly connected to the inner wall of the grooves 91. A connecting plate 12 is fixedly connected to the inner wall of the test cylinder 11. A lifting plate 13 is connected to the upper sidewall of the connecting plate 12 by a spring. A test tube 14 is fixedly connected to the upper sidewall of the lifting plate 13. A telescopic tube 15 connects the test tube 14 and the connecting plate 12. The upper end of the telescopic tube 15 passes through the lifting plate 13 and connects to the test tube 14. A first control valve 16 is provided. A hollow rubber ball 17 is fixedly connected to the upper end of the test tube 14. A trigger switch 18 is fixedly connected to the inner wall of the test cylinder 11. The trigger switch 18 will be pressed when the lifting plate 13 moves down. Multiple indicator lights 50 are fixedly connected to the outer wall of the test seat 4. The trigger switch 18 and the corresponding indicator lights 50 are electrically connected. An air pump 19 is fixedly connected to the lower side wall of the test seat 4. The air outlet of the air pump 19 is connected to the air supply chamber 92. A second control valve 20 is provided at the air outlet of the air pump 19. A short pipe 21 is fixedly connected to the air outlet of the air pump 19. A third control valve 22 is provided in the short pipe 21. Two diameter measuring components 23 are provided in the groove 91. Through these components, different sizes of apertures can be detected.

[0022] The diameter measuring assembly 23 includes an elastic rod 231, with a measuring box 232 fixedly connected to the upper end of the elastic rod 231. A transverse plate 24 is connected to the inner wall of the measuring box 232 away from the hollow rubber ball 17 via a spring. A laser ranging probe 25 is fixedly connected to the inner wall of the measuring box 232 away from the hollow rubber ball 17. The laser ranging probe 25 is electrically connected to the controller 2. A transverse pin 26 is fixedly connected to the side wall of the transverse plate 24 away from the spring. One end of the transverse pin 26 extends out of the measuring box 232 and is fixedly connected to a top plate 27. The transverse pin 26 is movably inserted into the side wall of the measuring box 232. Two top plates 27 located on the outer side of the same hollow rubber ball 17 are symmetrically arranged. Through this assembly, the size of the hollow rubber ball 17 can be detected.

[0023] The adsorption assembly 28 includes a support plate 281 fixedly connected to the moving end of the electric push rod 8. A vertical cylinder 282 is fixedly connected to the lower side wall of the support plate 281. A hollow disk 29 is fixedly connected to the lower end of the vertical cylinder 282. The vertical cylinder 282 and the hollow disk 29 are connected. A movable plate 30 is slidably disposed inside the hollow disk 29, and multiple springs are fixedly connected between the movable plate 30 and the hollow disk 29. A small hydraulic cylinder 38 is fixedly connected to the upper inner wall of the vertical cylinder 282. A friction plate 39 is fixedly connected to the moving end of the small hydraulic cylinder 38. A fixing column 31 is fixedly connected to the lower side wall of the movable plate 30. The hollow disk 29... The lower side wall has a sliding opening 32 that matches the fixed post 31. The lower end of the fixed post 31 passes through the sliding opening 32 and is fixedly connected to the adsorption box 33. The upper side wall of the adsorption box 33 is fixedly connected to the suction pump 34. The suction end of the suction pump 34 is connected to the adsorption box 33. The suction end of the suction pump 34 is equipped with a one-way valve 35. The inner wall of the adsorption box 33 is equipped with a pressure sensor 36. The upper side wall of the adsorption box 33 is fixedly connected to a pressure relief pipe 48. The pressure relief pipe 48 is equipped with a regulating valve 49. The lower side wall of the adsorption box 33 is fixedly connected to multiple suction cups 37. Through this component, the circuit board can be adsorbed.

[0024] The adjustment assembly 40 includes a hollow cavity 401 inside the test seat 4. The cavity wall of the hollow cavity 401 has four transverse cavities 402. The air inlet of the air pump 19 is connected to the hollow cavity 401. The air inlet of the air pump 19 is provided with a fourth control valve 41. The pipe wall of the air inlet of the air pump 19 is fixedly connected to a vent pipe 42. A fifth control valve 43 is provided in the vent pipe 42. A retaining ring 44 is fixedly connected to the inner wall of the transverse cavity 402. A piston plate 45 is connected to the side wall of the retaining ring 44 away from the hollow cavity 401 by a spring. A crossbar 46 is fixedly connected to the side wall of the piston plate 45 away from the spring. An adjustment plate 47 is fixedly connected to one end of the crossbar 46 that extends out of the transverse cavity 402, which can adjust the position of the circuit board.

[0025] The operating principle of this invention is explained as follows: The carrier storing the communication circuit board is placed behind the base plate 1, with the carrier resting against the rear side wall of the base plate 1. Then, the operator transmits a signal indicating the size of the holes on the circuit board to the controller 2 via an external remote control device. Upon receiving this signal, the controller 2 controls the air pump 19 to operate and opens the first control valve 16, the second control valve 20, and the fifth control valve 43. The air pump 19 delivers external gas to the air delivery chamber 92 through the air pipe 42 and then to the test cylinder 11 through the air delivery hole 10. The gas is then delivered to the hollow rubber ball 17 through the telescopic tube 15 and the test tube 14, causing the hollow rubber ball 17 to inflate and expand. The hollow rubber ball 17 expands... During the process, the top plates 27 on both sides will be pushed to move. The top plates 27 drive the transverse plates 24 to move closer to the laser rangefinder 25 through the transverse pins 26. When the laser rangefinder 25 detects that the transverse plates 24 have moved to the set position, the laser rangefinder 25 will send an electrical signal to the controller 2. After receiving the electrical signal, the controller 2 will control the corresponding first control valve 16 to close. At this time, the hollow rubber ball 17 will expand to the set size. When the controller 2 detects that all the hollow rubber balls 17 have expanded to the set size, it will control the air pump 19 to stop working. At the same time, the controller 2 will control the second control valve 20 and the fifth control valve 43 to be closed and control all the first control valves 16 to open.

[0026] Next, controller 2 controls servo motor 6 to operate. Servo motor 6 drives electric push rod 8 to rotate to a set angle via rotating plate 7. Electric push rod 8 then drives components such as adsorption box 33 and suction cup 37 to rotate to the set angle via bearing plate 281. Next, controller 2 controls electric push rod 8 to move adsorption box 33 and suction cup 37 downwards to a set position, making suction cup 37 contact the upper surface of the circuit board. Then, controller 2 controls suction pump 34 to operate, extracting gas from inside adsorption box 33, creating a negative pressure state inside adsorption box 33 and suction cup 37. Controller 2... When the pressure sensor 36 detects that the negative pressure inside the adsorption box 33 has reached the set threshold (-40 kPa), it controls the suction pump 34 to stop working. Then, the controller 2 controls the servo motor 6 and the electric push rod 8 to move the circuit board to a position five centimeters above the test seat 4. At this time, the circuit board is not in contact with the hollow rubber ball 17, but it will be lower than the height of the adjustment plate 47. Next, the controller 2 controls the air delivery pump 19 to work and controls the fourth control valve 41 and the third control valve 22 to open. The air delivery pump 19 will extract the gas from the hollow cavity 401 and the multiple transverse cavities 402 and discharge it through the short pipe 21. The gas inside the air chamber 92, telescopic tube 15, and hollow rubber ball 17 is released (and subsequently, the second control valve 20 and the third control valve 22 can be opened to discharge the gas through the short pipe 21), causing a decrease in the air pressure inside the multiple piston plates 45. Under the action of negative pressure, the multiple piston plates 45 will move towards the hollow cavity 401. The piston plates 45 drive the adjusting plate 47 to move via the crossbar 46. When the circuit board is not positioned correctly, for example, when it is shifted to the left, the left adjusting plate 47 will contact the left side wall of the circuit board during its movement and push the circuit board to the right. The circuit board will then drive the suction cup 37 and the suction box. 33 moves together. The adsorption box 33 drives the moving plate 30 to move to the right relative to the hollow plate 29 through the fixed column 31, overcoming the elastic force of the spring. When the adjusting plate 47 stops moving (the adjusting plate 47 will stop moving after the air pump 19 has been working for five seconds), the controller 2 will control the small hydraulic cylinder 38 to work. The small hydraulic cylinder 38 will drive the friction plate 39 to move down to the set position and contact the moving plate 30. Under the action of the friction between the friction plate 39 and the moving plate 30, the moving plate 30 is fixed, thereby relatively fixing the adsorption box 33 and the circuit board, and also completing the position adjustment of the circuit board.

[0027] Next, controller 2 controls electric push rod 8 to move the support plate 281, adsorption box 33 and circuit board downward to the set position. When the hole position on the circuit board surface is correct, the hollow rubber ball 17 will pass through the hole on the circuit board surface during the movement of the circuit board. At the same time, the circuit board will press down on the measuring box 232. When the hole position on the circuit board surface is incorrect, the circuit board will press down on the hollow rubber ball 17 during the downward movement. The hollow rubber ball 17 will drive the lifting plate 13 downward through the test tube 14. During the downward movement of the lifting plate 13, the gas inside the telescopic tube 15 will be compressed into the air delivery chamber 92. The lifting plate 13 will also press against the trigger switch 18. The trigger switch 18 will control the corresponding indicator light 50 to light up, assisting the operator in judging the position of the incorrect hole position on the circuit board, which is convenient for subsequent improvement work.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A communication circuit board testing tool, comprising a base plate (1), wherein a controller (2) is fixedly connected to the upper side wall of the base plate (1), and two support plates (3) are symmetrically fixedly connected to both sides of the upper surface of the base plate (1), and the upper ends of the two support plates (3) are fixedly connected to the same test seat (4), wherein a test component (9) is provided inside the test seat (4), characterized in that, Also includes: A connecting cover (5) is fixedly connected to the upper side wall of the base plate (1). A servo motor (6) located inside the connecting cover (5) is fixedly connected to the upper side wall of the base plate (1). The output end of the servo motor (6) is rotatably connected to the connecting cover (5) through a bearing. A rotating plate (7) is fixedly connected to the output end of the servo motor (6) through the connecting cover (5). An electric push rod (8) is fixedly connected to the upper side wall of the rotating plate (7). An adsorption component (28) is fixedly connected to the moving end of the electric push rod (8). An adjustment component (40) is disposed inside the test socket (4) for adjusting the position of the circuit board.

2. The communication circuit board testing tool according to claim 1, characterized in that, The test assembly (9) includes multiple grooves (91) formed on the upper sidewall of the test base (4). The multiple grooves (91) are distributed according to the positions of the holes on the circuit board surface. An air supply chamber (92) is formed inside the test base (4) below the multiple grooves (91). An air supply hole (10) is formed between the air supply chamber (92) and the groove (91). A test cylinder (11) covering the outside of the air supply hole (10) is fixedly connected to the inner wall of the groove (91). A connecting plate (12) is fixedly connected to the inner wall of the test cylinder (11). A lifting plate (13) is connected to the upper sidewall of the connecting plate (12) by a spring. A test tube (14) is fixedly connected to the upper sidewall of the lifting plate (13). The same telescopic tube (15) is connected between the test tube (14) and the connecting plate (12). The upper end of the telescopic tube (15) passes through the lifting plate (13) and is connected to the test tube (14). A first control valve (16) is provided in the telescopic tube (15). A hollow rubber ball (17) is fixedly connected to the upper end of the test tube (14). An air pump (19) is fixedly connected to the lower side wall of the test seat (4). The air outlet of the air pump (19) is connected to the air delivery chamber (92). A second control valve (20) is provided at the air outlet of the air pump (19). A short pipe (21) is fixedly connected to the air outlet of the air pump (19). A third control valve (22) is provided in the short pipe (21). Two diameter measuring components (23) are provided in the groove (91).

3. The communication circuit board testing tool according to claim 2, characterized in that, The adjustment assembly (40) includes a hollow cavity (401) opened inside the test seat (4). The cavity wall of the hollow cavity (401) is provided with four transverse cavities (402). The air inlet end of the air pump (19) is connected to the hollow cavity (401). The air inlet end of the air pump (19) is provided with a fourth control valve (41). The pipe wall of the air inlet end of the air pump (19) is fixedly connected to a vent pipe (42). The vent pipe (42) is provided with a fifth control valve (43). The inner wall of the transverse cavity (402) is fixedly connected with a retaining ring (44). The side wall of the retaining ring (44) away from the hollow cavity (401) is connected to a piston plate (45) by a spring. The side wall of the piston plate (45) away from the spring is fixedly connected with a crossbar (46). The end of the crossbar (46) extending out of the transverse cavity (402) is fixedly connected to an adjustment plate (47).

4. A communication circuit board testing tool according to claim 2, characterized in that, The diameter measuring assembly (23) includes an elastic rod (231), the upper end of which is fixedly connected to a measuring box (232). The inner wall of the measuring box (232) away from the hollow rubber ball (17) is connected to a transverse plate (24) by a spring. The inner wall of the measuring box (232) away from the hollow rubber ball (17) is fixedly connected to a laser ranging probe (25). The laser ranging probe (25) is electrically connected to a controller (2). The side wall of the transverse plate (24) away from the spring is fixedly connected to a horizontal pin (26). One end of the horizontal pin (26) away from the transverse plate (24) extends out of the measuring box (232) and is fixedly connected to a top plate (27). The horizontal pin (26) is movably inserted into the side wall of the measuring box (232). The two top plates (27) located on the outside of the same hollow rubber ball (17) are symmetrically arranged.

5. A communication circuit board testing tool according to claim 1, characterized in that, The adsorption assembly (28) includes a support plate (281) fixedly connected to the moving end of an electric push rod (8). A vertical cylinder (282) is fixedly connected to the lower side wall of the support plate (281). A hollow disk (29) is fixedly connected to the lower end of the vertical cylinder (282). The vertical cylinder (282) and the hollow disk (29) are connected. A movable plate (30) is slidably arranged inside the hollow disk (29). Multiple springs are fixedly connected between the movable plate (30) and the hollow disk (29). A fixed column (31) is fixedly connected to the lower side wall of the movable plate (30). The hollow disk... (29) has a sliding opening (32) on its lower side wall that matches the fixed column (31). The lower end of the fixed column (31) passes through the sliding opening (32) and is fixedly connected to the adsorption box (33). The upper side wall of the adsorption box (33) is fixedly connected to the suction pump (34). The suction end of the suction pump (34) is connected to the adsorption box (33). The suction end of the suction pump (34) is provided with a one-way valve (35). The inner wall of the adsorption box (33) is provided with a pressure sensor (36). The lower side wall of the adsorption box (33) is fixedly connected to multiple suction cups (37).

6. A communication circuit board testing tool according to claim 5, characterized in that, A small hydraulic cylinder (38) is fixedly connected to the upper inner wall of the vertical cylinder (282), and a friction plate (39) is fixedly connected to the moving end of the small hydraulic cylinder (38).

7. A communication circuit board testing tool according to claim 5, characterized in that, The upper side wall of the adsorption box (33) is fixedly connected to a pressure relief pipe (48), and a control valve (49) is provided inside the pressure relief pipe (48).

8. A communication circuit board testing tool according to claim 2, characterized in that, A trigger switch (18) is fixedly connected to the inner wall of the test cylinder (11). The lifting plate (13) will press the trigger switch (18) during the downward movement. Multiple indicator lights (50) are fixedly connected to the outer wall of the test seat (4). The trigger switch (18) and the corresponding indicator lights (50) are electrically connected.

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