Test system for microwave switch

Abstract

The invention provides a test system for a microwave switch, and relates to the technical field of microwave switches. The test system for the microwave switch comprises a microwave switch body, a bottom plate, a control device, a test circuit board and a plurality of groups of wires. When the microwave switch body is conveyed to the position below the detection box, the control device controls the lifting driving structure to drive the detection structure to move downwards, the multiple sets of testing heads abut against the multiple sets of signal pins on the side edge of the microwave switch body respectively, the control device outputs testing signals and receives testing results, and a base plate used for supporting is arranged below the detection box. When the testing head presses a signal pin of a microwave switch body, supporting force is provided from the lower portion through the base plate, the tool is in threaded connection to the inner side wall of a groove in the surface of the conveying belt through two sets of screws, and the testing substrate is detachably connected to the inner side wall of the fixing frame. Therefore, corresponding tools and test substrates can be conveniently replaced for different types of microwave switch bodies, and the application range is wide.

Description

Technical Field

[0001] The invention relates to the technical field of microwave switches, in particular to a test system for microwave switches. Background Art

[0002] The packaged microwave switch is an eight-pin device with a maximum operating frequency in the microwave band (above 4GHz). Its pins are signal output, channel one output, channel two output, working power, logic control, output enable and two ground pins. There is a large ground plane in the middle of the bottom of the device to ensure the normal operation of the device. At present, the test of packaged microwave switches is mostly to use a fixture to press the device directly on the corresponding position of the test circuit board, and then use the test equipment to test it. This test method is easy to damage the device pin plating due to the hard contact between the device pin and the circuit board, affecting the solderability of the device. At the same time, due to the difference in the pin height of the device itself, the contact between the pin and the circuit board is not very good, affecting the test effect or even burning the device; another test method is to directly weld on the circuit board for testing, which destroys the performance of the welding surface of the microwave switch pin, and it is easy to destroy the structural performance indicators of the microwave switch itself during welding, which is not suitable for parameter testing of microwave switches. Moreover, the test efficiency of these two test methods is not high, and they are not suitable for large-scale testing; In order to solve the above problems, there is an improved technology on the market that proposes a packaged microwave switch test device, including a test fixture, a test probe module for placing the microwave switch, and a test circuit board. The test fixture is placed on the test circuit board and fixedly connected to the metal base plate. The test probe module is fixed in the middle of the test fixture, and has a built-in elastic and retractable test probe with one end in contact with the test circuit board. The upper end of the test probe is connected to the signal input pin of the microwave switch. The test circuit board is mounted on the metal base plate and connected to the monitoring equipment through a wire. This technology places the packaged microwave switch in the test fixture, and connects the pins of the microwave switch with the test probe and the test circuit board to avoid contact between the chip pins and the test circuit board. The elasticity of the test probe plays a buffering role, and can maintain close contact with the test circuit board, reduce parasitic parameters, ensure the normal transmission of microwave signals, avoid hard pressing of chips, and improve test reliability and test efficiency. There is also an improved technology that proposes a single-pole double-throw radio frequency microwave switch test fixture, which relates to the field of microwave switch testing technology. A single-pole double-throw radio frequency microwave switch test fixture includes a placement table, and a placement groove is opened on the upper side of the placement table. The placement table A movable platform is arranged on the upper side, an inner frame is arranged on the inner side of the movable platform, a clamping plate is arranged on the inner side of the inner frame, and an adjustment slot is arranged inside the movable platform. The single-pole double-throw radio frequency microwave switch test fixture reduces the disadvantage that when the operator holds the single-pole double-throw radio frequency microwave switch in contact with the circuit board, the microwave switch and the circuit board are easily squeezed seriously due to the lack of a fulcrum for positioning the docking when the operator holds the microwave switch, thereby causing damage to the microwave switch and the circuit board. It also reduces the disadvantage that when the handheld microwave switch and the circuit board are directly tested, the microwave switch is easily tilted on the surface of the circuit board due to the shaking of the operator's hand during operation, resulting in intermittent testing. However, the above two improved technologies still use a purely manual method to test microwave switches, which is cumbersome and not systematic, and the test reliability and test efficiency are relatively low. Therefore, it is necessary to develop a test system for microwave switches to solve the above problems. Summary of the invention

[0003] 1. Technical issues to be resolved In view of the shortcomings of the prior art, the present invention provides a test system for a microwave switch, which solves the problems in the prior art of still using a purely manual method to test microwave switches, which results in cumbersome operation, lack of systematization, and relatively low test reliability and efficiency.

[0004] (II) Technical solution To achieve the above objectives, the present invention is realized through the following technical solutions: A test system for a microwave switch, comprising a microwave switch body, a bottom plate, a control device, a test circuit board, and multiple groups of wires. Multiple groups of signal pins are provided on both the left and right side walls of the microwave switch body. Both ends of the wires are provided with clips for clamping and fixing. The upper wall of the bottom plate is fixedly connected with a frame. Two groups of baffles distributed front and back are fixedly connected to the inner side wall of the frame near the upper end. Between the opposite sides of the two groups of baffles, a first rotating shaft and a second rotating shaft are rotatably connected in sequence from left to right. The first rotating shaft and the second rotating shaft are respectively close to the left end and the right end of the two groups of baffles. Transmission cylinders are fixedly connected to the outer walls of the first rotating shaft and the second rotating shaft. A conveyor belt is sleeved on the outer walls of the two groups of transmission cylinders. A transmission driving structure for driving the first rotating shaft to rotate is provided between the first rotating shaft and the baffle. Multiple grooves are equidistantly arranged along the length direction of the outer wall of the conveyor belt. A tooling for placing the microwave switch body is threadedly connected to the inner side wall of the groove through two groups of screws. A detection box is fixedly connected to the upper walls of the two groups of baffles. A maintenance door is rotatably connected to the left wall of the detection box through a hinge. A fixing frame is slidably connected to the inside of the detection box through a lifting driving structure. The side view projection of the fixing frame is in the shape of a "匚" with the mouth facing downwards. A partition is fixedly connected to the middle position of the inner side wall of the fixing frame. The test circuit board is detachably connected to the upper wall of the partition. A test substrate is detachably connected to the inner side wall of the fixing frame near the lower wall. A detection structure for contacting the signal pins of the microwave switch body is provided on the lower wall of the test substrate. The detection structure is electrically connected to the test circuit board and the test circuit board is electrically connected to the control device respectively through multiple groups of wires. Two groups of fixing plates are arranged in sequence from left to right on the upper walls of the two groups of baffles and on the right side of the detection box. The fixing plates are fixedly connected to the baffles through columns. A sliding seat is slidably connected to the upper wall of the fixing plate through a translation driving structure. A support plate is fixedly connected to the upper wall of the sliding seat. The support plate extends towards the left side of the sliding seat. A connecting plate is provided on the front wall of the support plate through a material grasping driving structure. A third cylinder for clamping the microwave switch body is provided on the lower wall of the connecting plate.

[0005] Preferably, the transmission driving structure includes a first motor and a speed reducer. The speed reducer and the first motor are fixedly connected to the front wall of the front side group of the two groups of baffles in sequence from left to right. The output shaft of the first motor is fixedly connected to the input shaft of the speed reducer. The front end of the first rotating shaft penetrates through the inner wall of the front side group of the two groups of baffles and extends to the front side thereof. The output shaft of the speed reducer is fixedly connected to the end of the first rotating shaft extending to the front side of the baffle through a coupling.

[0006] Preferably, multiple groups of synchronous teeth are provided on the outer walls of the two groups of transmission cylinders. The multiple groups of synchronous teeth are evenly distributed in a circular manner with the axis of the transmission cylinder as the center. The front view projection of the conveyor belt is in a ring shape and multiple groups of transmission teeth for synchronous transmission with the synchronous teeth are provided on the inner side wall of the ring.

[0007] Preferably, a placement groove is provided on the upper wall of the tooling and in the center thereof, the depth of the placement groove is half the thickness of the microwave switch body, and the inner left wall and the inner right wall of the tooling are both provided with avoidance grooves for conveniently taking and placing the microwave switch body.

[0008] Preferably, the lifting drive structure includes a first cylinder and two groups of first guide rods, the two groups of first guide rods are distributed front and back and slidably connected to the upper wall of the detection box in sequence, the ends of the two groups of first guide rods facing the detection box both penetrate the upper wall of the detection box and extend into the interior of the detection box, the upper wall of the fixed frame is fixedly connected to the ends of the two groups of first guide rods extending into the interior of the detection box, the fixed frame is slidably connected to the upper wall of the detection box through the two groups of first guide rods, the first cylinder is fixedly connected to the upper wall of the detection box and is located between the two groups of first guide rods, the end of the extended shaft of the first cylinder penetrates the upper wall of the detection box and extends into the interior of the detection box, and the end of the first cylinder extending into the interior of the detection box is fixedly connected to the upper wall of the fixed frame.

[0009] Preferably, the detection structure includes multiple groups of fixed tubes, which are fixedly connected to the lower wall of the test substrate. When the microwave switch body is located directly below the detection box, the multiple groups of fixed tubes are respectively opposite to the multiple groups of signal pins of the microwave switch body up and down, the inner wall of the fixed tube is slidably connected with an anti-slip block, and the end of the fixed tube away from the test substrate is threadedly connected with a locking ring for preventing the anti-slip block from slipping out. A spring is arranged between the inner upper wall of the fixed tube and the anti-slip block, and a sliding rod is arranged at the end of the anti-slip block away from the spring, and the end of the sliding rod away from the anti-slip block passes through the inner wall of the locking ring and extends to the bottom of the locking ring, and the end of the sliding rod extending below the locking ring is fixedly connected with a test head, and the test head is made of conductive material, and the test head is electrically connected to the test circuit board through a wire.

[0010] Preferably, a pad for supporting the detection structure during detection is fixedly connected between the two groups of baffles and directly below the detection box, and the upper wall of the pad is slidably connected to the inner upper wall of the conveyor belt.

[0011] Preferably, the translation driving structure includes a slide rail, a screw and a second motor, the slide rail is fixedly connected to the upper wall of the fixed plate and is perpendicular to the length direction of the baffle when viewed from above, the sliding seat is slidably connected to the upper wall of the slide rail, the screw is rotatably connected to the upper wall of the fixed plate through the first rotating seat and the second rotating seat and is located on the right side of the slide rail, the lower wall of the sliding seat is threadedly connected to the screw through a screw sleeve, the second rotating seat and the first rotating seat are distributed front and back, and a back plate is fixedly connected to the upper wall of the fixed plate near the rear end, the second motor is fixedly connected to the rear wall of the back plate, the second motor extending shaft passes through the inner wall of the back plate and extends to the front side of the back plate, and the end of the second motor extending shaft extending to the front side of the back plate is fixedly connected to the rear end of the screw through a coupling.

[0012] Preferably, the material grabbing driving structure includes a second cylinder and two groups of second guide rods, the two groups of second guide rods are respectively slidably connected to the front wall of the support plate through a group of guide sleeve seats, the lower ends of the two groups of second guide rods respectively penetrate the two groups of guide sleeve seats and extend to the lower side of the guide sleeve seats, the two groups of second guide rods extend to one end below the guide sleeve seats and are fixedly connected to the upper wall of the connecting plate, the second cylinder is fixedly connected to the front wall of the support plate and is located between the two groups of second guide rods, and the extended shaft end of the second cylinder is fixedly connected to the upper wall of the connecting plate.

[0013] Preferably, the third cylinder is a double-finger cylinder, and the front ends of the double fingers of the third cylinder are fixedly connected with clamping jaws arranged opposite to each other on the left and right, and the opposite sides of the two groups of clamping jaws are fixedly connected with buffer pads.

[0014] (III) Beneficial effects The present invention provides a test system for a microwave switch, which has the following beneficial effects: 1. Compared with the prior art, the microwave switch test system can manually or mechanically place the microwave switch body into the security slot. Multiple groups of microwave switch bodies are intermittently conveyed by the transmission belt driven by the first motor. When they are conveyed to the bottom of the detection box, the lifting drive structure is controlled by the control device to drive the detection structure to move downward. Multiple groups of test heads are respectively abutted against multiple groups of signal pins on the side of the microwave switch body to form a closed loop of the test circuit. The control device outputs the test signal and receives the test result. After the test is completed, the detection structure moves up, and the conveyor belt continues to convey. Qualified products and unqualified products are respectively grasped and transferred by two groups of third cylinders, which can realize systematic detection, high reliability, and greatly improve test efficiency.

[0015] 2. Compared with the prior art, the microwave switch test system is provided with a supporting pad under the detection box. When the test head is pressed against the signal pin of the microwave switch body, the pad provides supporting force from below to avoid poor contact between the test head and the signal pin caused by the downward movement of the conveyor belt, thereby improving the test reliability.

[0016] 3. Compared with the prior art, the microwave switch test system has a tooling that is threadedly connected to the inner wall of the groove on the surface of the conveyor belt by two sets of screws, and a test substrate that is detachably connected to the inner wall of the fixing frame, so that when facing different types of microwave switch bodies, the corresponding tooling and test substrate can be easily replaced, and the application range is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A partial enlarged view of the middle A; Figure 3 For the present invention Figure 1 A partial enlarged view of point B in the middle; Figure 4 It is a partial top view schematic diagram of the connection structure of the first motor, the reducer, the first rotating shaft and the transmission cylinder of the present invention; Figure 5 This is a schematic diagram of the structure of the third cylinder of the present invention; Figure 6 It is a partial sectional view of the internal structure of the detection box of the present invention; Figure 7 It is a partial cross-sectional view of the internal structure of the fixed pipe of the present invention; Figure 8 It is a schematic diagram of the top structure of the tooling of the present invention; Fig. 9 It is a partial cross-sectional view of the connection structure of the pad and baffle of the present invention.

[0018] Among them, 1, bottom plate; 2, frame; 3, baffle; 4, second rotating shaft; 5, conveyor belt; 6, first motor; 7, reducer; 8, tooling; 9, avoidance groove; 10, detection box; 11, first guide rod; 12, first cylinder; 13, column; 14, fixed plate; 15, slide rail; 16, sliding seat; 17, back plate; 18, second motor; 19, first rotating seat; 20, second rotating seat; 21, screw; 22, support plate; 23, second guide rod; 24, second cylinder; 25, connecting plate; 26, third cylinder; 27, clamping claw; 28, buffer pad; 29, fixing frame; 30, partition; 31, test circuit board; 32, test substrate; 33, fixing tube; 34, locking ring; 35, sliding rod; 36, test head; 37, anti-dropping block; 38, spring; 39, placement groove; 40, microwave switch body; 41, first rotating shaft; 42, transmission cylinder; 43, synchronous teeth; 44, pad. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example:

[0021] like Figures 1 to 9As shown, an embodiment of the present invention provides a test system for a microwave switch, including a microwave switch body 40, a bottom plate 1, a control device, a test circuit board 31, and multiple groups of wires. Multiple groups of signal pins are arranged on the left and right side walls of the microwave switch body 40, and both ends of the wires have clips for clamping and fixing. The upper wall of the bottom plate 1 is fixedly connected to a frame 2, and two groups of baffles 3 distributed front and back are fixedly connected to the inner wall of the frame 2 near the upper end. Most of the sizes of common microwave switch bodies 40 on the market do not exceed 100 mm in length and 100 mm in width. The distance between the two groups of baffles 3 is set according to the maximum size of the commonly used microwave switch bodies 40, ensuring that multiple models of microwave switch bodies 40 can be tested by the system; like Figure 1 as well as Figure 4 As shown, in order to realize the transportation of multiple groups of microwave switch bodies 40, the first rotating shaft 41 and the second rotating shaft 4 are rotatably connected in sequence between the opposite sides of the two groups of baffles 3 in a left-right distribution. The first rotating shaft 41 and the second rotating shaft 4 are respectively close to the left end and the right end of the two groups of baffles 3. The outer walls of the first rotating shaft 41 and the second rotating shaft 4 are fixedly connected with a transmission cylinder 42. The outer walls of the two groups of transmission cylinders 42 are jointly sleeved with a conveyor belt 5. A transmission driving structure for driving the first rotating shaft 41 to rotate is arranged between the first rotating shaft 41 and the baffle 3. The transmission driving structure includes a first motor 6 and a reducer 7. The reducer 7 and the first motor 6 are fixedly connected to the front wall of a group of baffles 3 on the front side of the two groups of baffles 3 in a left-right distribution. The extension shaft of the first motor 6 is fixedly connected to the input shaft of the reducer 7. The front end of the first rotating shaft 41 The output shaft of the reducer 7 is fixedly connected to the end of the first rotating shaft 41 extending to the front side of the baffle 3 through a coupling. The outer walls of the two transmission cylinders 42 are provided with multiple sets of synchronous teeth 43. The multiple sets of synchronous teeth 43 are equally distributed in a circle with the axis of the transmission cylinder 42 as the center. The front projection of the conveyor belt 5 is annular and the inner wall of the annular ring is provided with multiple sets of transmission teeth that cooperate with the synchronous teeth 43 for synchronous transmission. The first motor 6 drives the first rotating shaft 41 to rotate after being decelerated by the reducer 7, and drives the conveyor belt 5 to rotate through the transmission cylinder 42 to transmit the microwave switch body 40 placed on the surface of the conveyor belt 5. The synchronous teeth 43 prevent the conveyor belt 5 from slipping when rotating, which can effectively avoid slipping and misalignment leading to detection failure. like Figure 1 , Figure 2 as well as Fig. 9Therefore, in order to maintain the position of the microwave switch body 40, the outer wall of the conveyor belt 5 is provided with a plurality of grooves at equal intervals along its length direction. The inner wall of the groove is threadedly connected with a tooling 8 for placing the microwave switch body 40 through two sets of screws. A placement groove 39 is provided on the upper wall and in the center of the tooling 8. The depth of the placement groove 39 is half the thickness of the microwave switch body 40. The inner left wall and the inner right wall of the tooling 8 are both provided with avoidance grooves 9 for conveniently taking and placing the microwave switch body 40. The microwave switch body 40 can be placed into the placement groove 39 manually, or can be grabbed and discharged by a common grabbing structure on the market and the third cylinder 26 proposed in this embodiment. Tooling 8 with placement grooves 39 of different sizes can be prepared according to different models of microwave switch bodies 40, thereby improving the applicability of the test system. like Figure 1 , Figure 6As shown, in order to detect the microwave switch body 40 on the surface of the conveyor belt 5, a detection box 10 is fixedly connected to the upper walls of two groups of baffles 3. A maintenance door is rotatably connected to the left wall of the detection box 10 through a hinge. Inside the detection box 10, a fixing frame 29 is slidably connected through a lifting drive structure. The side view projection of the fixing frame 29 is in a U-shaped with the opening facing downwards. A partition 30 is fixedly connected to the inner side wall of the fixing frame 29 at the central position. A test circuit board 31 is detachably connected to the upper wall of the partition 30. A test substrate 32 is detachably connected to the inner side wall of the fixing frame 29 near the lower wall. A detection structure for contacting the signal pins of the microwave switch body 40 is arranged on the lower wall of the test substrate 32. The detection structure and the test circuit board 31, and the test circuit board 31 and the control device are respectively electrically connected through multiple groups of wires. The lifting drive structure includes a first cylinder 12 and two groups of first guide rods 11. The two groups of first guide rods 11 are arranged front and back and are sequentially slidably connected to the upper wall of the detection box 10. One ends of the two groups of first guide rods 11 facing the detection box 10 penetrate through the upper wall of the detection box 10 and extend into the detection box 10. The upper wall of the fixing frame 29 is fixedly connected to the ends of the two groups of first guide rods 11 extending into the detection box 10. The fixing frame 29 is slidably connected to the upper wall of the detection box 10 through the two groups of first guide rods 11. The first cylinder 12 is fixedly connected to the upper wall of the detection box 10 and is located between the two groups of first guide rods 11. The end of the extending shaft of the first cylinder 12 penetrates through the upper wall of the detection box 10 and extends into the detection box 10. The end of the first cylinder 12 extending into the detection box 10 is fixedly connected to the upper wall of the fixing frame 29. The detection structure includes multiple groups of fixing tubes 33. The multiple groups of fixing tubes 33 are all fixedly connected to the lower wall of the test substrate 32. When the microwave switch body 40 is located directly below the detection box 10, the multiple groups of fixing tubes 33 are respectively vertically opposite to the multiple groups of signal pins of the microwave switch body 40. An anti-detachment block 37 is slidably connected to the inner side wall of the fixing tube 33. A locking ring 34 for preventing the anti-detachment block 37 from detaching is threadedly connected to the end of the fixing tube 33 away from the test substrate 32. A spring 38 is arranged between the inner upper wall of the fixing tube 33 and the anti-detachment block 37. A sliding rod 35 is arranged at the end of the anti-detachment block 37 away from the spring 38. One end of the sliding rod 35 away from the anti-detachment block 37 penetrates through the inner wall of the locking ring 34 and extends below the locking ring 34. A test head 36 is fixedly connected to the end of the sliding rod 35 extending below the locking ring 34. The test head 36 is made of a conductive material. The test head 36 and the test circuit board 31 are electrically connected through a wire. When the microwave switch body 40 on the conveyor belt 5 moves below the detection box 10, the first motor 6 stops working. The first cylinder 12 drives the fixing frame 29 to move downwards until all the test heads 36 are in contact with the multiple groups of signal pins on the microwave switch body 40. At this time, the test circuit is closed. The control device outputs a test signal and receives the test result. After the test is completed, the first cylinder 12 drives the fixing frame 29 to move upwards and reset. At the same time, the first motor 6 restarts and drives the conveyor belt 5 to continue rotating. The cycle repeats, and microwave switch bodies 40 are continuously put into the tooling 8 on the left side of the detection box 10.Systematic and continuous testing can be achieved; like Fig. 9 As shown, in order to avoid poor contact caused by the downward movement of the conveyor belt 5 during detection, a pad 44 for supporting the detection structure during detection is fixedly connected between the two sets of baffles 3 and directly below the detection box 10. The upper wall of the pad 44 is slidably connected to the inner upper wall of the conveyor belt 5. During the test, the pad 44 plays a supporting role from below to avoid poor contact between the test head 36 and the signal pin; like Figure 1 , Figure 3 As shown, in order to realize the transfer of the microwave switch body 40 from the conveyor belt 5 to the outside, two groups of fixed plates 14 are arranged on the upper wall of the two groups of baffles 3 and are located on the right side of the detection box 10 and are distributed in the left and right directions. The fixed plates 14 are fixedly connected to the baffles 3 through the columns 13. The upper wall of the fixed plates 14 is slidably connected to the sliding seat 16 through a translation driving structure. The translation driving structure includes a slide rail 15, a screw rod 21 and a second motor 18. The slide rail 15 is fixedly connected to the upper wall of the fixed plate 14 and is perpendicular to the length direction of the baffle 3 in a top view. The sliding seat 16 is slidably connected to the upper wall of the slide rail 15. The screw 21 is connected to the upper wall of the slide rail 15 through a first rotating seat 19 and a second rotating seat 20. The second rotating seat 20 and the first rotating seat 19 are distributed front and back. The upper wall of the fixed plate 14 is fixedly connected to the back plate 17 near the rear end. The second motor 18 is fixedly connected to the rear wall of the back plate 17. The second motor 18 extends a shaft that passes through the inner wall of the back plate 17 and extends to the front side of the back plate 17. The end of the second motor 18 extending the shaft to the front side of the back plate 17 is fixedly connected to the rear end of the screw 21 through a coupling. When the second motor 18 rotates, it drives the screw 21 to rotate, and then drives the sliding seat 16 to translate forward and backward along the slide rail 15. like Figure 1 , Figure 3 as well as Figure 5As shown, in order to separate the microwave switch body 40 that has passed the test from the microwave switch body 40 that has failed the test, a support plate 22 is fixedly connected to the upper wall of the sliding seat 16, and the support plate 22 extends toward the left side of the sliding seat 16. The front wall of the support plate 22 is provided with a connecting plate 25 through a material grabbing drive structure, and the lower wall of the connecting plate 25 is provided with a third cylinder 26 for clamping the microwave switch body 40. The material grabbing drive structure includes a second cylinder 24 and two groups of second guide rods 23. The two groups of second guide rods 23 are respectively slidably connected to the front wall of the support plate 22 through a group of guide sleeve seats. The lower ends of the two groups of second guide rods 23 respectively penetrate the two groups of guide sleeve seats and extend to the lower side of the guide sleeve seats. The two groups of second guide rods 23 extend to the lower side of the guide sleeve seats. One end of the square is fixedly connected to the upper wall of the connecting plate 25, the second cylinder 24 is fixedly connected to the front wall of the support plate 22 and is located between the two groups of second guide rods 23, the second cylinder 24 extends out of the shaft end and is fixedly connected to the upper wall of the connecting plate 25, the third cylinder 26 is a double-finger cylinder, the front ends of the two fingers of the third cylinder 26 are fixedly connected with clamps 27 which are arranged opposite to each other on the left and right, and the two groups of clamps 27 are fixedly connected with buffer pads 28 on the opposite sides. After the test is completed, the control device controls the two groups of second cylinders 24 to act separately according to the moving speed of the conveyor belt 5 and the test results, and the qualified products and unqualified products are clamped by the two groups of third cylinders 26 respectively, and the unqualified products are removed in time to avoid the influx of qualified products, thereby improving the test reliability.

[0022] Working principle: the dimensions of the common microwave switch bodies 40 on the market are mostly no more than one hundred millimeters in length and one hundred millimeters in width. The spacing between the two sets of baffles 3 is set according to the maximum dimension of the common microwave switch bodies 40, ensuring that multiple models of microwave switch bodies 40 can be tested by the system. The first motor 6 drives the first rotating shaft 41 to rotate after being decelerated by the reducer 7, and drives the conveyor belt 5 to rotate through the transmission cylinder 42 to convey the microwave switch bodies 40 placed on the surface of the conveyor belt 5. The synchronous teeth 43 prevent the conveyor belt 5 from slipping when rotating, which can effectively avoid the failure of the detection caused by slipping and misalignment. The microwave switch body 40 can be placed into the placement groove 39 manually, or it can be grabbed and discharged by the common grabbing structure on the market and the third cylinder 26 proposed in this embodiment. Tooling 8 with placement grooves 39 of different sizes can be prepared according to different models of microwave switch bodies 40 to improve the applicability of the test system. When the microwave switch body 40 on the conveyor belt 5 moves to the bottom of the detection box 10, the first motor 6 stops working and the first gas cylinder 26 stops working. The cylinder 12 drives the fixing frame 29 to move downward until all the test heads 36 are in contact with the multiple groups of signal pins on the microwave switch body 40. At this time, the test circuit is closed, and the test signal is output through the control device, and the test result is received. After the test is completed, the first cylinder 12 drives the fixing frame 29 to move upward and reset. At the same time of resetting, the first motor 6 is restarted, driving the conveyor belt 5 to continue to rotate, reciprocating, and keeping the microwave switch body 40 continuously put into the tooling 8 on the left side of the detection box 10, so as to realize systematic continuous detection operation. During the test, the pad 44 plays a supporting role from below to avoid poor contact between the test head 36 and the signal pin. When the second motor 18 rotates, it drives the screw 21 to rotate, and then drives the sliding seat 16 to move forward and backward along the slide rail 15. After the test is completed, the control device controls the two groups of second cylinders 24 to act separately according to the moving speed of the conveyor belt 5 and the test result, and clamps the qualified products and unqualified products respectively through the two groups of third cylinders 26. The unqualified products are removed in time to avoid the flow of qualified products, thereby improving the reliability of the test.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A test system for a microwave switch, characterized in that: It includes a microwave switch body (40), a bottom plate (1), a control device, a test circuit board (31), and multiple groups of wires. Multiple groups of signal pins are provided on both the left and right side walls of the microwave switch body (40). Both ends of the wires have clips for clamping and fixing. A frame (2) is fixedly connected to the upper wall of the bottom plate (1). Two groups of baffles (3) distributed front and back are fixedly connected to the inner side wall of the frame (2) near the upper end. A first rotating shaft (41) and a second rotating shaft (4) are rotatably connected in sequence from left to right between the opposite sides of the two groups of baffles (3). The first rotating shaft (41) and the second rotating shaft (4) are respectively close to the left end and the right end of the two groups of baffles (3). Transmission cylinders (42) are fixedly connected to the outer walls of the first rotating shaft (41) and the second rotating shaft (4). A conveyor belt (5) is sleeved on the outer walls of the two groups of transmission cylinders (42). A transmission driving structure for driving the first rotating shaft (41) to rotate is provided between the first rotating shaft (41) and the baffle (3). Multiple grooves are equidistantly arranged along the length direction of the outer wall of the conveyor belt (5). A tooling (8) for placing the microwave switch body (40) is threadedly connected to the inner side wall of the groove through two groups of screws. A detection box (10) is fixedly connected to the upper walls of the two groups of baffles (3). A maintenance door is rotatably connected to the left wall of the detection box (10) through a hinge. A fixing frame (29) is slidably connected to the inside of the detection box (10) through a lifting driving structure. The side view projection of the fixing frame (29) is in a shape of a reversed C with the opening facing downwards. A partition plate (30) is fixedly connected to the middle position of the inner side wall of the fixing frame (29). The test circuit board (31) is detachably connected to the upper wall of the partition plate (30). A test substrate (32) is detachably connected to the inner side wall of the fixing frame (29) near the lower wall. A detection structure for contacting the signal pins of the microwave switch body (40) is provided on the lower wall of the test substrate (32). The detection structure is electrically connected to the test circuit board (31) and the test circuit board (31) is electrically connected to the control device through multiple groups of wires respectively. Two groups of fixing plates (14) are arranged in sequence from left to right on the upper walls of the two groups of baffles (3) on the right side of the detection box (10). The fixing plates (14) are fixedly connected to the baffles (3) through columns (13). A sliding seat (16) is slidably connected to the upper wall of the fixing plate (14) through a translation driving structure. A support plate (22) is fixedly connected to the upper wall of the sliding seat (16). The support plate (22) extends towards the left side of the sliding seat (16). A connecting plate (25) is provided on the front wall of the support plate (22) through a material grasping driving structure. A third air cylinder (26) for clamping the microwave switch body (40) is provided on the lower wall of the connecting plate (25).

2. A microwave switch test system according to claim 1, characterized in that: The transmission drive structure comprises a first motor (6) and a reducer (7); the reducer (7) and the first motor (6) are fixedly connected to the front wall of the front group of baffles (3) in the two groups of baffles (3) in a left-right distribution in sequence; the extension shaft of the first motor (6) is fixedly connected to the input shaft of the reducer (7); the front end of the first rotating shaft (41) passes through the inner wall of the front group of baffles (3) in the two groups of baffles (3) and extends to the front side thereof; the output shaft of the reducer (7) is fixedly connected to the end of the first rotating shaft (41) extending to the front side of the baffle (3) through a coupling.

3. A microwave switch test system according to claim 2, characterized in that: The outer walls of the two groups of transmission cylinders (42) are each provided with a plurality of groups of synchronous teeth (43), and the plurality of groups of synchronous teeth (43) are equally distributed in a circle with the axis of the transmission cylinder (42) as the center. The front view projection of the conveyor belt (5) is annular, and the inner side wall of the annular ring is provided with a plurality of groups of transmission teeth that cooperate with the synchronous teeth (43) for synchronous transmission.

4. A microwave switch test system according to claim 3, characterized in that: A placement groove (39) is provided on the upper wall of the tooling (8) and in the center thereof. The depth of the placement groove (39) is half the thickness of the microwave switch body (40). The inner left wall and the inner right wall of the tooling (8) are both provided with avoidance grooves (9) for conveniently taking and placing the microwave switch body (40).

5. A microwave switch test system according to claim 4, characterized in that: The lifting drive structure comprises a first cylinder (12) and two groups of first guide rods (11). The two groups of first guide rods (11) are arranged front and back and are slidably connected to the upper wall of the detection box (10) in sequence. The ends of the two groups of first guide rods (11) facing the detection box (10) penetrate the upper wall of the detection box (10) and extend into the interior of the detection box (10). The upper wall of the fixing frame (29) is fixedly connected to the ends of the two groups of first guide rods (11) extending into the interior of the detection box (10). The fixing frame (29) is slidably connected to the upper wall of the detection box (10) through the two groups of first guide rods (11). The first cylinder (12) is fixedly connected to the upper wall of the detection box (10) and is located between the two groups of first guide rods (11). The end of the shaft of the first cylinder (12) extends through the upper wall of the detection box (10) and extends into the interior of the detection box (10). The end of the first cylinder (12) extending into the interior of the detection box (10) is fixedly connected to the upper wall of the fixing frame (29).

6. A microwave switch test system according to claim 5, characterized in that: The detection structure comprises a plurality of groups of fixed tubes (33), the plurality of groups of fixed tubes (33) being fixedly connected to the lower wall of the test substrate (32); when the microwave switch body (40) is located directly below the detection box (10), the plurality of groups of fixed tubes (33) are respectively opposite to the plurality of groups of signal pins of the microwave switch body (40) in the upper and lower directions; an anti-slip block (37) is slidably connected to the inner wall of the fixed tube (33); an end of the fixed tube (33) away from the test substrate (32) is threadedly connected to a locking ring (34) for preventing the anti-slip block (37) from slipping out; and the fixed tube ( A spring (38) is provided between the inner upper wall of the anti-slip block (33) and the anti-slip block (37); a sliding rod (35) is provided at one end of the anti-slip block (37) away from the spring (38); one end of the sliding rod (35) away from the anti-slip block (37) passes through the inner wall of the locking ring (34) and extends below the locking ring (34); one end of the sliding rod (35) extending below the locking ring (34) is fixedly connected to a test head (36); the test head (36) is made of conductive material, and the test head (36) is electrically connected to the test circuit board (31) through a wire.

7. A microwave switch test system according to claim 6, characterized in that: A pad (44) for supporting the detection structure during detection is fixedly connected between the two groups of baffles (3) and located directly below the detection box (10), and the upper wall of the pad (44) is slidably connected to the inner upper wall of the conveyor belt (5).

8. A microwave switch test system according to claim 7, characterized in that: The translation drive structure comprises a slide rail (15), a screw rod (21) and a second motor (18); the slide rail (15) is fixedly connected to the upper wall of the fixed plate (14) and the slide rail (15) is perpendicular to the length direction of the baffle (3) when viewed from above; the sliding seat (16) is slidably connected to the upper wall of the slide rail (15); the screw rod (21) is rotatably connected to the upper wall of the fixed plate (14) through a first rotating seat (19) and a second rotating seat (20) and is located on the right side of the slide rail (15); the lower wall of the sliding seat (16) is connected to the upper wall of the fixed plate (14) through a screw sleeve The second rotating seat (20) and the first rotating seat (19) are arranged front and back, and the upper wall of the fixed plate (14) is fixedly connected to a back plate (17) near the rear end. The second motor (18) is fixedly connected to the rear wall of the back plate (17). The extension shaft of the second motor (18) passes through the inner wall of the back plate (17) and extends to the front side of the back plate (17). One end of the extension shaft of the second motor (18) extending to the front side of the back plate (17) is fixedly connected to the rear end of the screw (21) via a coupling.

9. A microwave switch test system according to claim 8, characterized in that: The material grabbing driving structure comprises a second cylinder (24) and two groups of second guide rods (23); the two groups of second guide rods (23) are respectively slidably connected to the front wall of the support plate (22) through a group of guide sleeve seats; the lower ends of the two groups of second guide rods (23) respectively penetrate the two groups of guide sleeve seats and extend to the lower side of the guide sleeve seats; one end of the two groups of second guide rods (23) extending below the guide sleeve seats is fixedly connected to the upper wall of the connecting plate (25); the second cylinder (24) is fixedly connected to the front wall of the support plate (22) and is located between the two groups of second guide rods (23); the second cylinder (24) extends out of the shaft end and is fixedly connected to the upper wall of the connecting plate (25).

10. A microwave switch test system according to claim 9, characterized in that: The third cylinder (26) is a double-finger cylinder, and the front ends of the two fingers of the third cylinder (26) are fixedly connected to clamping claws (27) arranged opposite to each other on the left and right sides, and the opposite sides of the two groups of clamping claws (27) are fixedly connected to buffer pads (28).

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