Unit type FCT test equipment

Abstract

The invention belongs to the technical field of FCT testing, and particularly relates to unit type FCT testing equipment which comprises a machine case. A control panel; the detection mechanism comprises a bottom plate which is fixedly connected with the case; the guide rail is used for placing a fixing plate of the circuit board, and the guide rail is matched with the case; a push rod of the second cylinder is fixedly connected with the guide rail, a cylinder body of the second cylinder is fixedly connected with the bottom plate, and the guide rail is slidably connected with the bottom plate through the second cylinder; the detection box is fixedly connected with the bottom plate, and the detection box is matched with the guide rail; the main rollers are rotationally connected with the guide rails; the slave rollers are rotationally connected with the guide rail, and the slave rollers and the master roller are located on the same horizontal line; a conveyor belt; a shaft of the motor is fixedly connected with the main roller; and the controller is electrically connected with the controller panel, and the motor and the detection mechanism are both electrically connected with the controller. According to the scheme, the problem of low efficiency of manual circuit board replacement is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of FCT testing, and in particular relates to a unit-type FCT testing device. Background Art

[0002] FCT (Functional Circuit Test) unit type refers to a modular, configurable test system used to verify the functional integrity of electronic products. Unit type FCT test equipment combines multiple independent test units together to form a complete test system to meet the testing requirements of different products.

[0003] At present, an automated PCB board FCT test machine and its test system with announcement number CN105510799A on the market include a frame, the frame includes a test bench and a mechanical mechanism, the mechanical mechanism is arranged on a console and an operating chamber located above the test bench, wherein the operating chamber is provided with left and right test fixtures, the test fixture includes an upper mold pressing mechanism, connected to the upper end of the frame and provided with a fixture upper mold, used to press the PCB board to be tested to contact with the fixture upper mold and electrically conduct with the internal test circuit of the test machine; a lower mold slide mechanism, arranged above the test bench and capable of sliding inside and outside, including a fixture lower mold, used to press the PCB board to be tested to contact with the fixture upper mold and mesh with the fixture upper mold; a cylinder mechanism, respectively connected to the upper mold pressing mechanism and the lower mold slide mechanism, used for the lifting and lowering of the upper mold pressing mechanism and the sliding inside and outside of the lower mold slide mechanism. This invention can improve the efficiency and accuracy of PCB testing, simplify the process and method, and significantly reduce operating costs.

[0004] But there is also a problem: since circuit board testing requires testing many groups, it is very troublesome and inefficient to manually replace the circuit board after each test. Summary of the invention

[0005] The invention provides a unit-type FCT testing device, which is used to solve the problem of low efficiency of manual replacement of circuit boards.

[0006] The present invention provides a unit-type FCT test device, including: a chassis: the chassis is provided with a hatch; a control panel: the control panel is fixedly connected to the chassis; a detection mechanism: the detection mechanism includes: a bottom plate: the bottom plate is fixedly connected to the chassis; a guide rail: the guide rail is used to place a fixed plate for a circuit board, and the guide rail is matched with the chassis; a second cylinder: the push rod of the second cylinder is fixedly connected to the guide rail, the cylinder body of the second cylinder is fixedly connected to the bottom plate, and the guide rail is slidably connected to the bottom plate through the second cylinder; a detection box: the detection box is connected to The bottom plate is fixedly connected, and the detection box is matched with the guide rail; main roller: the main rollers are rotatably connected with the guide rail; slave roller: a plurality of slave rollers are provided, and the slave rollers are rotatably connected with the guide rail, and the slave rollers and the main rollers are located on the same horizontal line; conveyor belt: the conveyor belt is matched with the roller, and the chassis is provided with a conveying window, and the conveyor belt is matched with the conveying window; motor: the shaft of the motor is fixedly connected with the main roller; controller: the controller is electrically connected with the controller panel, and the motor and the detection mechanism are electrically connected with the controller.

[0007] The principle of this scheme is that the operator places the fixed plate on the conveyor belt, the controller controls the motor to start, drives the main roller to rotate, and the main roller drives the conveyor belt to rotate, so that the fixed plate is transported from the conveying window to the inside of the chassis, and the guide rail can straighten the position of the fixed plate. When it reaches the set position, the controller controls the motor to stop, and then the second cylinder drives the guide rail and the fixed plate to move down together, so that the detection device in the detection box contacts the circuit board, and then the voltage and current test is performed. After the test is completed, the controller controls the second cylinder to move up, so that the guide rail and the fixed plate return to the initial position. At this time, the controller controls the motor to start again, and the tested fixed plate is transported out, so that the next fixed plate is transported in, and the automatic test is completed.

[0008] The beneficial effect of this solution is that: this solution realizes the replacement of circuit boards through a conveyor belt, thereby improving work efficiency.

[0009] Furthermore, it also includes a first cylinder and a recording pen, wherein the cylinder body of the first cylinder is fixedly connected to the bottom plate, the push rod of the first cylinder is fixedly connected to the recording pen, the recording pen cooperates with the fixed plate, and the first cylinder is electrically connected to the controller. During the test, if there is an unqualified circuit board, the controller will control the first cylinder to start, and the first cylinder will drive the recording pen to move downward, so that the recording pen marks the fixed plate. This mechanism can effectively distinguish qualified and unqualified products.

[0010] Furthermore, it also includes a ball screw, the guide rail includes a first baffle and a second baffle, the first baffle is fixedly connected to the push rod of the second cylinder, the ball screw is rotatably connected to the first baffle, and the second baffle cooperates with the ball screw. Since the models and sizes of circuit boards are different, in order to make the device adapt to circuit boards of various sizes, the mechanism can rotate the ball screw, the nut of the ball screw will move, and the movement of the nut will drive the second baffle to move, so as to achieve the adjustment of the spacing between the first baffle and the second baffle.

[0011] Furthermore, it also includes a temperature detector and an alarm light, wherein the temperature detector is used to detect the temperature of the circuit board, and the temperature detector is fixedly connected to the guide rail, and the alarm light is fixedly connected to the chassis, and the alarm light and the temperature detector are both electrically connected to the controller.

[0012] Circuit testing is often accompanied by short circuits and high temperatures. At this time, manual inspection and maintenance are required immediately. In this solution, when the circuit board is being tested, the temperature sensor will detect problems with the circuit board at any time. When the temperature exceeds the set value, the temperature sensor will send an electrical signal to the controller, and the controller will control the alarm light to flash. This mechanism prevents the problem of device damage caused by high temperature.

[0013] Furthermore, it also includes a positioning mechanism, which includes a blocking plate, a fixing rod, a spring and an adjusting cylinder, the adjusting cylinder is fixedly connected to the guide rail, one end of the spring is fixedly connected to the adjusting cylinder, and the other end is fixedly connected to the blocking plate, the blocking plate cooperates with the guide rail, and the blocking plate is slidably connected to the adjusting cylinder, the fixing rod is fixedly connected to the base plate, and the fixing rod cooperates with the blocking plate.

[0014] In the initial state, the blocking plate will extend out under the action of gravity, so that the blocking plate is located in the guide rail. When the motor starts to drive the conveyor belt to move, the conveyor belt makes the fixed plate come into the guide rail. After the fixed plate reaches the set position, it will be blocked by the blocking plate to ensure that the fixed plate is in the set position. At this time, the guide rail will move down for detection. When the guide rail moves down, it will move the adjusting cylinder down, so that the blocking plate moves down. The blocking plate will contact the fixed rod, and the fixed rod will move the blocking plate up, so that the blocking plate retracts. When the detection is completed, the guide rail will return to its original position. At this time, due to the characteristics of the cylinder, the return speed of the blocking plate is slow. At this time, the conveyor belt starts, allowing the detected fixed plate to pass, and the next fixed plate will be stopped. This mechanism ensures the position of the fixed plate through the positioning mechanism to prevent the test failure caused by the incorrect position of the fixed plate.

[0015] Furthermore, the detection box includes a probe, and the probe cooperates with the circuit board. The probe test can fully verify the function of the product and ensure that all key functions can work normally.

[0016] Furthermore, it also includes a clamping mechanism, which includes a push switch, an inflation and deflation mechanism and an airbag, the push switch is fixedly connected to the blocking plate, and the push switch cooperates with the fixed plate, the inflation and deflation mechanism is used to inflate the airbag, the inner side of the guide rail is fixedly connected to the airbag, and the push switch and the inflation and deflation mechanism are both electrically connected to the controller.

[0017] Since the fixed plate is slidably set on the conveyor belt, it is easy for the circuit board to shift when the probe contacts it during the probe test. In this solution, when the fixed plate reaches the set position, the fixed plate will hit the push switch on the blocking plate. The push switch sends an electrical signal, and the controller controls the inflation and deflation mechanism to inflate the airbag, which inflates the airbag. The inflation of the airbag reduces the guide rail space and achieves clamping. At this time, there will be no problem of deviation when the guide rail moves down for testing. When the test is completed, the guide rail returns to the initial position, and the controller controls the inflation and deflation mechanism to deflate, so that the fixed plate can slide, which is convenient for the conveyor belt to replace the circuit board.

[0018] Furthermore, it also includes an air blocking plate, and the air filling and discharging mechanism is an adjusting cylinder, which includes a piston, an outer shell, an air inlet pipe and an air outlet pipe. The air inlet pipe and the air outlet pipe are both provided with a one-way valve, one end of the air outlet pipe is connected to the outer shell, and the other end is connected to the airbag, the piston is fixedly connected to the blocking plate, the piston is slidingly and sealingly connected to the inside of the outer shell, the airbag is provided with an air outlet, the air blocking plate is fixedly connected to the bottom plate, and the air blocking plate cooperates with the air outlet.

[0019] When the fixed plate reaches the set position through the conveyor, the fixed plate will touch the push switch, the push switch sends an electrical signal, the controller controls the motor to stop, and then the controller controls the second cylinder to move the guide rail downward. When the guide rail moves downward, the blocking plate will contact the fixed rod, the fixed rod will move the blocking plate upward, so that the blocking plate will retract, and the retraction of the blocking plate will drive the piston to retract, so that the outlet pipe of the regulating cylinder will inflate the airbag, so that the airbag clamps the fixed plate, and at the same time the air blocking plate will block the air outlet of the airbag, so that the airbag will not leak. When the guide rail moves upward, the air blocking plate no longer blocks the air outlet, so that the airbag leaks. This mechanism inflates the airbag by moving the blocking plate up and down, which reduces the setting of the inflation and deflation mechanism and saves energy.

[0020] Furthermore, it also includes an air intake pipe, which is fixedly connected to the guide rail and aligned with the fixed plate, and the air inlet pipe is connected to the air intake pipe. When the blocking plate returns to its original position under the action of the spring and its own gravity, the regulating cylinder will inhale air, and at this time, the air intake pipe will inhale air to remove dust from the next fixed plate to prevent dust from interfering with the test.

[0021] Furthermore, a dust bag is included. A filter screen is provided at the connection point between the air intake pipe and the housing. The dust bag is connected to the air intake pipe. Dust absorbed by the air intake pipe will enter the air intake pipe, then be blocked by the filter screen, and finally fall into the dust bag. This mechanism prevents dust from entering the regulating cylinder and affecting the working performance of the regulating cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a unit-type FCT test equipment. Figure 2 A side view of a unit-type FCT test equipment. Figure 3 This is a structural diagram of a unit-type FCT test equipment detection mechanism. Figure 4 It is a cross-sectional view of a unit-type FCT test equipment detection mechanism. Figure 5 This is an enlarged view of the detection mechanism of a unit-type FCT test equipment.

[0023] The figure marks in the specification include: 1. chassis; 2. alarm light; 3. control panel; 4. hatch; 5. transfer window; 6. bottom suction cup; 7. distribution box; 8. recording pen; 9. first cylinder; 10. detection mechanism; 11. temperature sensor; 12. second cylinder; 13. conveyor belt; 14. main roller; 15. first baffle; 16. second baffle; 17. first ball screw; 18. second ball screw; 19. belt; 20. bottom plate; 21. detection box; 22. circuit board; 23. fixing plate; 24. air outlet; 25. air bag; 26. fixing rod; 27. probe; 28. blocking plate; 29. ​​spring; 30. adjusting cylinder; 31. piston; 32. air inlet pipe; 33. air outlet pipe; 34. dust bag; 35. filter; 36. connecting plate; 37. air blocking plate; 38. air intake pipe. DETAILED DESCRIPTION

[0024] Basically as attached Figure 1 , Figure 2 As shown: The present invention provides a unit-type FCT test equipment, including a chassis 1, an alarm light 2, a control panel 3, a hatch 4, a transfer window 5, a bottom suction cup 6, a distribution box 7, a recording pen 8, a first cylinder 9, a detection mechanism 10, a temperature sensor 11, a second cylinder 12, a conveyor belt 13, a main roller 14, a slave roller, a first baffle 15, a second baffle 16, a ball screw, a belt 19, a bottom plate 20, a detection box 21, a circuit board 22, a fixing plate 23, an air bag 25, a fixing rod 26, a blocking plate 28, a spring 29, an adjusting cylinder 30, a piston 31, a dust bag 34, a filter 35, a connecting plate 36, an air blocking plate 37 and an air suction pipe 38.

[0025] There are two layers of identical FTC test devices in the chassis 1, which can speed up the test. The front of the chassis 1 is provided with a control panel 3 and a hatch 4. The control panel 3 is used to manually control the test device. The hatch 4 is closed during operation and can be opened to inspect the equipment when necessary. A transfer window 5 is provided on the side of the chassis 1, which is used to externally transfer the fixed plate 23 to the conveyor belt 13 in the FTC test device. The alarm light 2 is set on the top of the chassis 1, and the alarm light is electrically connected to the controller.

[0026] The cylinder body of the first cylinder 9 is fixed inside the chassis 1. A long plate is connected to the push rod of the first cylinder 9. The long plate is located above the detection mechanism 10. A recording pen 8 is fixed on the long plate. The recording pen 8 and the long plate are detachably fixedly connected. The recording pen 8 can adjust itself according to the position of the fixed plate 23. The recording pen 8 is aligned with the fixed plate 23.

[0027] A temperature sensor 11 is disposed on the first baffle 15 of the detection mechanism 10 . The temperature sensor 11 is electrically connected to the controller, and the temperature sensor 11 is also electrically connected to the alarm.

[0028] As attached Figure 2 , Figure 3 , Figure 4 As shown: The circuit board 22 is detachably fixed on the fixing plate 23 , and the fixing plate 23 is used to protect the circuit board 22 .

[0029] The detection mechanism 10 includes a second cylinder 12, a conveyor belt 13, a motor, a main roller 14, a slave roller, a guide rail, a ball screw, a belt 19, a bottom plate 20 and a detection box 21; The second cylinder 12 is used to control the guide rail to move up and down. The cylinder body of the second cylinder 12 is fixedly connected to the chassis 1, and the push rod of the second cylinder 12 is fixedly connected to the guide rail, so that the guide rail can move up and down relative to the bottom plate 20. The guide rail includes a first baffle 15, a second baffle 16 and a connecting plate 36. The connecting plate 36 is fixedly connected to the push rod of the second cylinder 12, the first baffle 15 is fixedly connected to the connecting plate 36, and the second baffle 16 is slidably connected to the connecting plate 36.

[0030] The motor is fixed on the chassis 1, and the shaft of the motor is fixedly connected to the main roller 14. The main roller 14 and the slave roller are rotatably connected to the first baffle 15. The main roller 14 and the slave roller are located on the same horizontal line, and the main roller 14 and the slave roller are also wrapped with a conveyor belt 13.

[0031] The ball screw adopts the existing ball screw, which includes a lead screw, a ball and a nut. There are two ball screws, namely the first ball screw 17 and the second ball screw 18. The lead screws of the first ball screw 17 and the second ball screw 18 are rotatably connected to the chassis 1. At the same time, the nuts on the first ball screw 17 and the second ball screw 18 are fixed on the left and right sides of the second baffle 16, so that when the two lead screws rotate, the nuts move, so that the second baffle 16 translates to prevent deflection. The detection box 21 is fixed on the bottom plate 20, and a plurality of probes 27 are arranged in the detection box 21, and the probes 27 are aligned with the guide rail to set the position.

[0032] As attached Figure 4 , Figure 5 As shown: The regulating cylinder 30 includes a piston 31, a housing, an air inlet pipe 32 and an air outlet pipe 33. The housing of the regulating cylinder 30 is fixedly connected to the guide rail. One end of the spring 29 is fixedly connected to the piston 31, and the other end is fixedly connected to the blocking plate 28. The blocking plate 28 is L-shaped to increase the contact range with the fixed rod 26. The blocking plate 28 and the fixed rod 26 are located on the same vertical horizontal line, and the blocking plate 28 is slidably connected to the housing of the regulating cylinder 30. The fixed rod 26 is fixedly connected to the bottom plate 20. The piston 31 is fixedly connected to the blocking plate 28, and the piston 31 is slidably and sealedly connected to the inside of the housing.

[0033] A push switch is also provided at the place where the blocking plate 28 contacts the fixing plate 23 , and the push switch is electrically connected to the controller.

[0034] Both the inlet pipe 32 and the outlet pipe 33 are provided with a one-way valve. One end of the outlet pipe 33 is connected to the shell, and the other end is connected to the airbag 25. The inlet pipe 32 is connected to the suction pipe 38, and the suction pipe 38 is fixedly connected to the guide rail, and the suction pipe 38 is aligned with the fixed plate 23. The outlet port 24 of the shell and the outlet pipe 33 are larger than the inlet port and the inlet pipe 32 of the shell, so that when the regulating cylinder 30 exhausts air, the speed is fast and the piston 31 moves fast, and when the air is inhaled, the speed is slow and the piston 31 moves slowly. A limit plate is provided around the airbag 25, so that when the airbag expands, it can only expand toward the direction of the fixed plate 23, so that the airbag 25 clamps the fixed plate 23.

[0035] An air outlet plate is provided at the airbag 25 facing the fixed plate 23, the air outlet plate is connected to the airbag, the air outlet plate is provided with an air outlet 24, and an air blocking plate 37 is fixedly connected to the bottom plate 20, and the air blocking plate 37 cooperates with the air outlet 24. When the guide rail moves downward, the air blocking plate 37 blocks the air outlet 24 of the airbag 25, so that the airbag 25 does not leak. When the guide rail moves upward, the air blocking plate 37 no longer blocks the air outlet 24, so that the airbag 25 leaks.

[0036] A filter screen 35 is provided at the connection between the air inlet pipe 32 and the air inlet of the housing for filtering out dust. A dust collecting bag 34 is provided below the air inlet pipe 32 , and the dust collecting bag 34 is communicated with the air inlet pipe 32 .

[0037] As attached Figure 1-5 As shown: The principle of this solution is that the operator places the fixed plate 23 on the conveyor belt 13, the controller controls the motor to start, driving the main roller 14 to rotate, and the main roller 14 drives the conveyor belt 13 to rotate, so that the fixed plate 23 is transported from the conveying window 5 to the inside of the chassis 1, and the guide rail can straighten the position of the fixed plate 23. In the initial state, the blocking plate 28 will extend out under the action of gravity, so that the blocking plate 28 is located in the guide rail. When the fixed plate 23 hits the blocking plate 28, it will stop. At the same time, the fixed plate 23 will squeeze the press switch, and the press switch sends an electrical signal to the controller. The controller controls the motor to stop, so that the conveyor belt 13 stops.

[0038] Then the controller controls the second cylinder 12 to control the guide rail to move downward. At this time, the blocking plate 28 will move downward accordingly, and the blocking plate 28 will contact the fixing rod 26. The fixing rod 26 will move the blocking plate 28 upward, causing the blocking plate 28 to retract. The retraction of the blocking plate 28 will drive the piston 31 to retract, so that the outlet pipe 33 of the regulating cylinder 30 will inflate the air in the airbag 25, so that the airbag 25 clamps the fixing plate 23. At the same time, the air blocking plate 37 will block the air outlet 24 of the airbag 25, so that the airbag 25 will not leak.

[0039] At this time, the probe 27 will detect the circuit board 22. If it is unqualified, the controller will control the first cylinder 9 to start, so that the recording pen 8 moves down and marks the unqualified circuit board 22. After the detection is completed, the controller controls the guide rail to move up. When the guide rail moves up, the air blocking plate 37 no longer blocks the air outlet 24, causing the air bag 25 to leak. At the same time, the blocking plate 28 also returns to its position under the action of the spring 29 and gravity, but because the air inlet pipe 32 and the air inlet of the regulating cylinder 30 are small, the gas loss is slow, and the piston 31 falls slowly. At this time, the blocking plate 28 has not blocked the guide rail yet, and the controller controls the motor to start, so that the conveyor belt 13 starts, and the fixed plate 23 that has been tested is sent out, and then the new fixed plate 23 is sent in. When the new fixed plate 23 is sent in, the blocking plate 28 returns to the initial position.

[0040] Moreover, when the blocking plate 28 is in the return position, air is sucked, so that the air suction pipe 38 sucks air and removes dust from the newly-entered fixed plate 23. The dust absorbed by the air suction pipe 38 enters the air inlet pipe 32, is then blocked by the filter 35, and finally falls into the dust bag 34. This mechanism prevents dust from entering the regulating cylinder 30 and affecting the working performance of the regulating cylinder 30.

[0041] The beneficial effects of this solution are as follows: 1. This solution uses the conveyor belt 13 to replace the circuit board 22, thereby improving work efficiency. 2. This device can automatically clamp the fixed plate 23 when testing is required to prevent deviation during testing. 3. The blocking plate 28 can help the fixed plate 23 to be better positioned, preventing the conveyor belt 13 from slipping and causing the fixed plate 23 to be inaccurately positioned.

[0042] The above are only embodiments of the present invention, and the common knowledge of the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A unit type FCT test equipment, comprising: Chassis (1): the chassis (1) is provided with a door (4); Control panel (3): the control panel (3) is fixedly connected to the chassis (1); Detection mechanism (10): The detection mechanism (10) comprises: Bottom plate (20): the bottom plate (20) is fixedly connected to the chassis (1); Guide rail: the guide rail is used to place a fixing plate (23) of a circuit board (22), and the guide rail cooperates with the chassis (1); A second cylinder (12): a push rod of the second cylinder (12) is fixedly connected to the guide rail, a cylinder body of the second cylinder (12) is fixedly connected to the base plate (20), and the guide rail and the base plate (20) are slidably connected via the second cylinder (12); Detection box (21): the detection box (21) is fixedly connected to the bottom plate (20), and the detection box (21) cooperates with the guide rail; It is characterized by further comprising: Main rollers (14): the main rollers (14) are rotatably connected to the guide rails; Slave rollers: a plurality of slave rollers are provided, and the slave rollers are rotatably connected to the guide rails, and the slave rollers and the main roller (14) are located on the same horizontal line; Conveyor belt (13): the conveyor belt (13) cooperates with the roller, the chassis (1) is provided with a conveyor window (5), and the conveyor belt (13) cooperates with the conveyor window (5); Motor: the shaft of the motor is fixedly connected to the main roller (14); Controller: The controller is electrically connected to the controller panel, and the motor and the detection mechanism (10) are both electrically connected to the controller.

2. A unitized FCT test device according to claim 1, characterized in that: It also includes a first cylinder (9) and a recording pen (8), wherein the cylinder body of the first cylinder (9) is fixedly connected to the base plate (20), the push rod of the first cylinder (9) is fixedly connected to the recording pen (8), the recording pen (8) cooperates with the fixed plate (23), and the first cylinder (9) is electrically connected to the controller.

3. A unitized FCT testing device according to claim 1, characterized in that: It also includes a ball screw, the guide rail includes a first baffle (15) and a second baffle (16), the first baffle (15) is fixedly connected to the push rod of the second cylinder (12), the ball screw is rotatably connected to the first baffle (15), and the second baffle (16) cooperates with the ball screw.

4. A unitized FCT testing device according to claim 1, characterized in that: It also includes a temperature detector and an alarm light, wherein the temperature detector is used to detect the temperature of the circuit board (22), and the temperature detector is fixedly connected to the guide rail, and the alarm light is fixedly connected to the chassis (1), and the alarm light and the temperature detector are both electrically connected to the controller.

5. A unitized FCT testing device according to claim 1, characterized in that: The invention also comprises a positioning mechanism, the positioning mechanism comprising a blocking plate (28), a fixing rod (26), a spring (29) and an adjusting cylinder (30), the adjusting cylinder (30) being fixedly connected to the guide rail, one end of the spring (29) being fixedly connected to the adjusting cylinder (30) and the other end being fixedly connected to the blocking plate (28), the blocking plate (28) being matched with the guide rail, and the blocking plate (28) being slidably connected with the adjusting cylinder (30), the fixing rod (26) being fixedly connected with the bottom plate (20), and the fixing rod (26) being matched with the blocking plate (28).

6. A unitized FCT testing device according to claim 1, characterized in that: The detection box (21) comprises a probe (27), and the probe (27) cooperates with the circuit board (22).

7. A unitized FCT testing device according to claim 5, characterized in that: It also includes a clamping mechanism, the clamping mechanism including a push switch, an inflation and deflation mechanism and an airbag (25), the push switch being fixedly connected to the blocking plate (28), and the push switch being matched with the fixing plate (23), the inflation and deflation mechanism being used to inflate the airbag (25), the inner side of the guide rail being fixedly connected to the airbag (25), and the push switch and the inflation and deflation mechanism being electrically connected to a controller.

8. A unitized FCT testing device according to claim 7, characterized in that: The invention also comprises an air blocking plate (37). The air filling and discharging mechanism is an adjusting cylinder (30). The adjusting cylinder (30) comprises a piston (31), an outer shell, an air inlet pipe (32) and an air outlet pipe (33). Both the air inlet pipe (32) and the air outlet pipe (33) are provided with a one-way valve. One end of the air outlet pipe (33) is connected to the outer shell, and the other end is connected to the air bag (25). The piston (31) is fixedly connected to the blocking plate (28). The piston (31) is slidably and sealingly connected to the inside of the outer shell. The air bag (25) is provided with an air outlet (24). The air blocking plate (37) is fixedly connected to the bottom plate (20), and the air blocking plate (37) cooperates with the air outlet (24).

9. A unitized FCT testing device according to claim 8, characterized in that: It also includes an air intake pipe (38), the air intake pipe (38) being fixedly connected to the guide rail, and the air intake pipe (38) being aligned with the fixed plate (23), and the air intake pipe (32) being in communication with the air intake pipe (38).

10. A unitized FCT testing device according to claim 9, characterized in that: It also includes a dust collecting bag (34), a filter screen (35) is provided at the connection point between the air inlet pipe (32) and the housing, and the dust collecting bag (34) is in communication with the air inlet pipe (32).

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