An online FCT-ICT precision alignment testing device

Abstract

This utility model discloses an online FCT-I CT precision alignment testing device, relating to the field of test plate testing equipment. It includes a fixed frame installed inside a housing, with a liftable clamping mechanism fixed to the top of the fixed frame and multiple clamps distributed at the bottom of the clamping mechanism; a plate carrier mechanism fixed to the fixed frame for supporting the test plate, the plate carrier mechanism including a pressure bar for calibrating the test plate; a belt conveyor fixed to the top of a lifting mechanism, which is fixed to the bottom of the fixed frame; multiple pressing mechanisms, provided and fixed to both sides of the belt conveyor for cooperating with the belt conveyor to clamp the test plate; and a stop assembly fixed to the belt conveyor for limiting the displacement of the test plate, solving the problem of poor probe contact due to misalignment affecting the accuracy of test results.

Description

Technical Field

[0001] This utility model relates to the field of test equipment for boards under test, and in particular to an online FCT-ICT precision alignment test equipment. Background Technology

[0002] FCT testing equipment is an automated functional testing device, mainly used for electrical performance testing of semi-finished or finished products, covering parameters such as voltage, current, power, and frequency. It features fully automatic control, high efficiency, and high precision.

[0003] In FCT testing, accurate alignment of the test board (DUT) is crucial. Inaccurate alignment can lead to poor probe contact, thus affecting the accuracy of test results. For high-density, miniaturized circuit boards, even higher alignment accuracy is required. Utility Model Content

[0004] The purpose of this invention is to provide an online FCT-ICT precision alignment testing device to solve the problem of poor probe contact caused by misalignment affecting the accuracy of test results.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: including a fixed frame installed inside the housing, a liftable clamping mechanism fixed to the top of the fixed frame, and multiple clamps distributed at the bottom of the clamping mechanism;

[0006] A plate carrier mechanism fixed on a mounting frame for supporting a test plate, the plate carrier mechanism including a pressure bar for calibrating the test plate;

[0007] A belt conveyor, wherein the belt conveyor is fixed to the top of a lifting mechanism, and the lifting mechanism is fixed to the bottom of a fixed frame;

[0008] Multiple pressing mechanisms are provided and fixed on both sides of the belt conveyor to cooperate with the belt conveyor to clamp the test plate;

[0009] The baffle assembly, fixed on the belt conveyor, is used to limit the displacement of the test plate.

[0010] As a further description of the above technical solution: the clamp includes an electric cylinder and a clamp, the electric cylinder is fixed on the base plate, and the piston rod of the electric cylinder is rotatably connected to the clamp;

[0011] The clamp is movably connected to the base plate via a connecting arm;

[0012] The mounting bracket is fixed with a top plate positioned above the base plate;

[0013] A linear module for driving the base plate to rise and fall is fixedly installed on the top plate.

[0014] As a further description of the above technical solution: the linear module includes multiple lead screws fixed on the base plate, each lead screw being helically driven by a nut, and the nut being rotatably connected to the base plate;

[0015] Multiple nuts are driven synchronously by a motor.

[0016] As a further description of the above technical solution: the lifting mechanism includes two sets of brackets, the bottom of the brackets is fixed with a nut two, the nut two is screwed with a lead screw two, the two lead screw two are driven by a motor two fixed on a support plate two, the support plate two is fixed on a fixed frame and placed below the base plate.

[0017] As a further description of the above technical solution: a guide rail with a slider is fixed on the bracket, and a shaft seat is fixed at one end of the guide rail.

[0018] The belt conveyor includes two frames, which are respectively fixed on two sliders and two shaft seats;

[0019] A conveyor belt is installed on the frame, and a motor is fixed on the frame to drive the conveyor belt to rotate.

[0020] As a further description of the above technical solution: the pressing mechanism includes a fixed seat and a pressing plate fixed on the frame;

[0021] A limit switch is fixed inside the mounting base;

[0022] A pressure arm is rotatably connected to the fixed base via a shaft. One end of the pressure arm is rotatably connected to the pressure plate, and the other end is close to the contact rod of the limit switch.

[0023] A spring is fixed to the side of the upper surface of the pressure arm near the pressure plate, which abuts against the fixed seat.

[0024] As a further description of the above technical solution: the material blocking assembly includes a guide rail with a slider, the slider is fixedly connected to a baffle plate, an electric cylinder is fixed on the guide rail, and the piston rod of the electric cylinder is fixed to the baffle plate;

[0025] The second guide rail is vertically fixed on the frame.

[0026] As a further description of the above technical solution: the carrier plate mechanism includes a support plate one fixed to the bottom of the fixing frame and L-shaped pads symmetrically fixed on the support plate one. An electric cylinder two is fixed to the bottom of the support plate one, and the piston rod of the electric cylinder two is fixedly connected to the pressure rod.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0028] This application achieves full automation of the test board process, from conveying and precise alignment to test connection, through integrated automation design. The position detection and initial limiting of the test board are achieved through the pressing mechanism and the stop assembly. With the synergistic action of the lifting mechanism, L-shaped pads and pressure bars, the board is calibrated with high precision perpendicular to the conveying direction. Finally, the fixture with the connector plate is precisely lowered and docked by the linear module, which greatly improves the automation, accuracy and efficiency of the test, reduces labor costs and the test error rate caused by misalignment, thereby improving product quality and the overall efficiency of the production line. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the internal equipment structure of the casing of this utility model;

[0031] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model;

[0032] Figure 4 This is a schematic diagram of the bottom structure of the clamping plate mechanism of this utility model;

[0033] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0034] Figure 6 This is a schematic diagram of the belt conveyor structure of this utility model;

[0035] Figure 7 This is a schematic diagram of the pressing mechanism of this utility model;

[0036] Figure 8 This is a schematic diagram of the material blocking component structure of this utility model;

[0037] Figure 9 This is a schematic diagram of the lifting mechanism of this utility model;

[0038] Figure 10 This is a schematic diagram of the carrier plate mechanism of this utility model.

[0039] Legend:

[0040] 10. Fixture;

[0041] 20. Clamping mechanism; 21. Fixture; 211. Electric cylinder 1; 212. Connecting arm; 213. Clamp; 22. Linear module; 221. Nut 1; 222. Lead screw 1; 223. Motor 1; 23. Top plate; 24. Base plate;

[0042] 30. Carrier plate mechanism; 31. Support plate one; 32. Pad rod; 33. Pressure rod; 34. Electric cylinder two;

[0043] 40. Lifting mechanism; 41. Bracket; 411. Guide rail one; 412. Slider one; 42. Nut two; 43. Lead screw two; 44. Motor two; 45. Support plate two;

[0044] 50. Belt conveyor; 51. Frame; 52. Conveyor belt; 53. Motor; 54. Shaft mount;

[0045] 60. Pressing mechanism; 61. Fixed base; 62. Pressing arm; 621. Shaft; 63. Limit switch; 64. Spring; 65. Pressing plate;

[0046] 70. Material stop assembly; 71. Guide rail II; 72. Slider II; 73. Material stop plate; 74. Electric cylinder III. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] like Figure 1 - Figure 10 As shown, the present invention provides an online FCT-ICT precision alignment test device, including a fixed frame 10 installed in the housing, and the housing has reserved entrances and exits for the test plate on both sides. The top of the fixed frame 10 is fixed with a liftable clamping mechanism 20, and the bottom of the clamping mechanism 20 is distributed with multiple clamps 21, which clamp the connector plate for connecting with the test plate through the multiple clamps 21.

[0049] A plate carrier mechanism 30 is fixed on the mounting frame 10 for supporting the test plate. The plate carrier mechanism 30 includes a pressure bar 33 for calibrating the test plate.

[0050] The belt conveyor 50 is fixed to the top of the lifting mechanism 40, and the lifting mechanism 40 is fixed to the bottom of the fixed frame 10.

[0051] Multiple pressing mechanisms 60 are provided and fixed on both sides of the belt conveyor 50 for cooperating with the belt conveyor 50 to clamp the plate to be tested;

[0052] The material stop assembly 70 is fixed on the belt conveyor 50 and is used to limit the displacement of the plate to be tested;

[0053] The board to be tested is placed on the belt conveyor 50 and conveyed to the bottom of the pressing mechanism 60 to prevent displacement. The pressing mechanism 60 alarms to prevent misalignment of the board to be tested, thus preventing misalignment during the PCB board testing process and resulting in scrap due to pressure. At the same time, the baffle assembly 70 blocks the board to be tested and limits its lateral displacement. Then, the lifting mechanism 40 lifts the carrier mechanism 30 upward and abuts it against the board to be tested. The pressure rod 33 moves perpendicular to the conveying direction of the belt conveyor 50 and performs compression calibration on the board to be tested perpendicular to the conveying direction. Finally, the liftable clamping mechanism 20 drives the clamp holding the connector plate clamp 21 to descend and align it with the belt side plate, thus achieving precise alignment.

[0054] like Figure 3 , Figure 4 , Figure 5 As shown, the clamp 21 includes an electric cylinder 211 and a clamp 213. The electric cylinder 211 is vertically fixed on the base plate 24, and the piston rod of the electric cylinder 211 is rotatably connected to the clamp 213 shaft.

[0055] The clamp 213 is rotatably connected to the base plate 24 via the connecting arm 212. When the piston rod of the electric cylinder 211 retracts, the piston rod pulls the outer end of the clamp 213 upward, and the inner end moves downward with the shaft connection of the connecting arm 212 as the fulcrum. At this time, the connector plate can be placed between the clamp 213 and the top plate 23. Then, by extending the piston rod of the electric cylinder 211, the inner end moves upward to clamp the connector plate.

[0056] The mounting bracket 10 is fixed with a top plate 23 placed above the base plate 24;

[0057] A linear module 22 for driving the base plate 24 to rise and fall is fixedly installed on the top plate 23.

[0058] like Figure 3 , Figure 4 As shown, the linear module 22 includes multiple vertically arranged lead screws 222 fixed on the base plate 24. The lead screws 222 are screw-driven with nuts 221. The nuts 221 are rotatably connected to the base plate 24 through bearings.

[0059] Multiple nuts 221 are synchronously driven by motor 223. Motor 223 is fixed on top plate 23. The output shaft 223 of motor 223 and nuts 221 are coaxially fixed with synchronous pulleys. Multiple synchronous pulleys are driven by synchronous belts, and a tensioning pulley is set between adjacent synchronous pulleys to ensure normal synchronous transmission.

[0060] Furthermore, when the output shaft of motor 223 rotates clockwise, it drives multiple nuts 221 to rotate clockwise. At this time, under the action of screw transmission, multiple lead screws 222 move downward synchronously. Conversely, when the output shaft of motor 223 rotates counterclockwise, multiple nuts 221 rotate counterclockwise, driving multiple lead screws 222 to move upward synchronously, ultimately realizing the lifting and adjustment of the base plate 24 and the clamp 21 fixed above it.

[0061] like Figure 6 , Figure 9 As shown, the lifting mechanism 40 includes two sets of brackets 41. Nut 42 is fixed at the bottom of the bracket 41. Nut 42 is screwed to drive screw 43. The two screws 43 are driven by motor 44 fixed on support plate 45. Screw 43 is rotatably connected to support plate 45 through bearings. The output shaft of motor 44 and the top of screw 43 are coaxially fixed with synchronous pulleys. Multiple synchronous pulleys are driven by synchronous belts, and multiple tensioning pulleys ensure their wrap angle. Support plate 45 is fixed on the fixed frame 10 and placed below the base plate 24. The synchronous lifting of the two sets of brackets 41 is achieved by the synchronous pulleys and synchronous belts driven by motor 44 and the screw drive of screw 43 and nut 42.

[0062] like Figure 6 , Figure 9 As shown, a guide rail 411 with a slider 412 is fixed on the bracket 41, and a bearing 54 is fixed at one end of the guide rail 411.

[0063] The belt conveyor 50 includes two frames 51, which are respectively fixed on two sliders 412 and two bearings 54. A motor is fixed on the bearing 54, and a lead screw is rotatably connected to the bearing 54 via bearings. A nut that is screwed to the lead screw is fixed on the slider 412. The motor drives the lead screw to rotate through the transmission of the synchronous pulley and the synchronous belt. The lead screw pushes and pulls the frame 51 fixed on the slider 412 through the screw drive with the nut, thereby adjusting the distance between the two frames 51. In this application, the transmission and installation methods of the lead screw and nut are well known to those skilled in the art. Furthermore, the lead screw, nut and motor, which are not shown in the figure, can also be easily obtained by those skilled in the art.

[0064] A conveyor belt 52 is installed on the frame 51. Strips are fixed on opposite sides of the two frames 51 and are placed inside the conveyor belt 52 to support it. Multiple synchronous pulleys are rotatably connected to the frame 51 through bearings and are driven by a synchronous belt. A motor 53 for driving the conveyor belt 52 is fixed on the frame 51. The output shaft of the motor 53 is coaxially fixed with a synchronous pulley that drives the synchronous belt.

[0065] As shown in the figure, the pressing mechanism 60 includes a fixed seat 61 and a pressing plate 65 fixed on the frame 51. The pressing plate 65 is rotatably connected to the fixed seat 61 through a bearing and rolls along the conveying direction of the conveyor belt 52.

[0066] A limit switch 63 is fixed inside the fixed base 61. The limit switch 63 is connected to a programmable switch through a time delay unit. The programmable switch is used to control the equipment.

[0067] A pressure arm 62 is rotatably connected to the fixed base 61 via a shaft 621. One end of the pressure arm 62 is rotatably connected to the pressure plate 65, and the other end is close to the contact rod of the limit switch 63.

[0068] A spring 64 is fixed on the upper surface of the pressure arm 62 near the pressure plate 65, which abuts against the fixed seat 61. Under the elastic support of the spring 64, the time delay is normally in an open circuit state. When the test plate moves to the bottom of the pressure plate 65 by the conveyor belt 52, the test plate presses the pressure plate 65 upward, which compresses the spring 64. The pressure arm 62 is lowered at one end of the fixed seat 61, triggering the limit switch 63. The limit switch 63 controls the equipment through the time delay and the program control switch.

[0069] like Figure 6 , Figure 7 As shown, the material blocking assembly 70 includes a guide rail 71 with a slider 72, a baffle plate 73 fixedly connected to the slider 72, and an electric cylinder 74 fixed on the guide rail 71. The piston rod of the electric cylinder 74 is fixed to the baffle plate 73.

[0070] Guide rail 2 71 is vertically fixed on frame 51. The piston rod of electric cylinder 3 74 extends and retracts, thereby driving the baffle plate 73 to rise and fall. When the baffle plate 73 falls, it blocks the front end of the conveyor belt 52 to prevent the test plate on the conveyor belt 52 from shifting laterally. When electric cylinder 3 74 drives the baffle plate 73 to rise, the tested plate can be sent out of the machine housing through the conveyor belt 52.

[0071] like Figure 10 As shown, the plate carrier mechanism 30 includes a support plate 31 fixed to the bottom of the fixed frame 10 and L-shaped pads 32 symmetrically fixed on the support plate 31. An electric cylinder 34 is fixed to the bottom of the support plate 31. The piston rod of the electric cylinder 34 is fixedly connected to the pressure rod 33. The plate to be tested on the belt conveyor 50 is driven down by the lifting mechanism 40 and placed on the two L-shaped pads 32. Then, the retraction of the electric cylinder 34 pulls the pressure rod 33 to press it towards the plate to be tested, so that the plate to be tested is pressed between the protruding ends of the pressure rod 33 and the pads 32, thus completing the calibration of the plate to be tested.

[0072] Working principle: Test board conveying and coarse positioning:

[0073] The test board enters from the side entrance of the housing and is carried and conveyed inward by the belt conveyor 50. During the conveying process, when the test board reaches below the pressing mechanism 60, it will lift the pressing plate 65 upward, and the pressing arm 62 will then trigger the limit switch 63 downward. The limit switch 63 is linked with the programmable switch through a time delay to send a signal to the control system to prevent misalignment during the PCB board testing process, which would result in the board being crushed and scrapped. It also indicates that the test board has arrived in place and initiates the subsequent steps. At the same time, the electric cylinder 74 of the baffle assembly 70 drives the baffle plate 73 to descend. The baffle plate 73 is perpendicular to the direction of the conveyor belt 52 and blocks the front end of the test board on the conveyor belt 52 to prevent it from continuing to move along the conveying direction and to provide initial lateral limit.

[0074] Carrier plate mechanism 30 lift and fine calibration:

[0075] After the coarse positioning of the test plate is completed, the lifting mechanism 40 starts to work; the motor 44 drives the lead screw 43 through the synchronous belt, and the lead screw 43 and the nut 42 drive the two sets of brackets 41 connected to the nut to move upward synchronously; since the belt conveyor 50 is fixed on the slider 412 and the bearing 54 of the bracket 41, the entire belt conveyor 50 and the test plate on it also rise synchronously; the test plate rises to abut against the L-shaped pad 32 of the plate carrier mechanism 30 and rests on the pad 32. At this time, the electric cylinder 34 on the plate carrier mechanism 30 starts, its piston rod retracts, and drives the pressure rod 33 to press towards the test plate, accurately pressing the test plate between the pressure rod 33 and the protruding end of the L-shaped pad 32, completing the final pressing calibration perpendicular to the conveying direction during the alignment process;

[0076] Connector plate descent and test connection:

[0077] After the test board is precisely calibrated, the linear module 22 located below the top plate 23 starts to work. The motor 223 drives the synchronous pulley and synchronous belt, which drives multiple nuts 221 to rotate synchronously. The nuts 221 and the lead screw 222 provide helical transmission, causing the base plate 24 and multiple clamps 21 fixed on it to descend synchronously. The electric cylinder 211 inside each clamp 21 extends and retracts the piston rod according to the preset program, driving the clamp 213 to open or close, so that the connector plate (the interface plate connecting the FCT-ICT test probe) clamped between the clamp 213 and the top plate 23 descends and is precisely aligned with and connected to the corresponding test point on the test board, completing the final precise alignment and electrical connection.

[0078] Test execution and completion:

[0079] After the connector board is securely connected to the board under test, the system initiates the FCT-ICT joint test. Test data is collected, analyzed, and recorded.

[0080] Test board sent out:

[0081] After the test is completed, the clamping mechanism 20 rises and resets. Then, the electric cylinder 74 drives the baffle plate 73 to rise, releasing the restriction on the tested plate. Finally, the lifting mechanism 40 rises, causing the belt conveyor 50 to rise along with the test plate to the discharge height. The conveyor belt 52 then sends the tested plate out of the machine casing from the inlet and outlet, ready for the next test cycle.

[0082] It is worth noting that all the motors in this application are servo motors with brakes.

[0083] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An online FCT-ICT precision alignment testing device, comprising a mounting bracket (10) installed inside a housing, characterized in that, The top of the fixed frame (10) is fixed with a liftable clamping mechanism (20), and the bottom of the clamping mechanism (20) is provided with multiple clamps (21). A plate carrier mechanism (30) fixed on a mounting frame (10) for supporting a test plate, the plate carrier mechanism (30) including a pressure bar (33) for calibrating the test plate; A belt conveyor (50) is fixed to the top of a lifting mechanism (40), which is fixed to the bottom of a fixed frame (10). Multiple pressing mechanisms (60) are provided and fixed on both sides of the belt conveyor (50) for cooperating with the belt conveyor (50) to clamp the plate to be tested; A baffle assembly (70) is fixed on a belt conveyor (50) to limit the displacement of the test plate.

2. The online FCT-ICT precision alignment testing device according to claim 1, characterized in that, The clamp (21) includes an electric cylinder (211) and a clamp (213). The electric cylinder (211) is fixed on the base plate (24), and the piston rod of the electric cylinder (211) is rotatably connected to the clamp (213). The clamp (213) is movably connected to the base plate (24) via the connecting arm (212); The fixing frame (10) is fixed with a top plate (23) placed above the bottom plate (24); A linear module (22) for driving the bottom plate (24) to rise and fall is fixedly installed on the top plate (23).

3. The online FCT-ICT precision alignment testing device according to claim 2, characterized in that, The linear module (22) includes multiple lead screws (222) fixed on the base plate (24), each lead screw (222) is screw-driven with a nut (221), and the nut (221) is rotatably connected to the base plate (24). Multiple nuts (221) are driven synchronously by motor (223).

4. The online FCT-ICT precision alignment testing device according to claim 1, characterized in that, The lifting mechanism (40) includes two sets of brackets (41). The bottom of the brackets (41) is fixed with a nut (42). The nut (42) is screwed with a lead screw (43). The two lead screws (43) are driven by a motor (44) fixed on a support plate (45). The support plate (45) is fixed on a fixed frame (10) and placed below the base plate (24).

5. The online FCT-ICT precision alignment testing device according to claim 4, characterized in that, The bracket (41) is fixed with a guide rail (411) with a slider (412), and a bearing (54) is fixed at one end of the guide rail (411). The belt conveyor (50) includes two frames (51), which are respectively fixed on two sliders (412) and two bearings (54); A conveyor belt (52) is driven on the frame (51), and a motor (53) for driving the conveyor belt (52) to rotate is fixed on the frame (51).

6. The online FCT-ICT precision alignment testing device according to claim 5, characterized in that, The pressing mechanism (60) includes a fixed seat (61) and a pressing plate (65) fixed on the frame (51); A limit switch (63) is fixed inside the fixed base (61); A pressure arm (62) is rotatably connected to the fixed base (61) via a shaft (621). One end of the pressure arm (62) is rotatably connected to the pressure plate (65), and the other end is close to the contact rod of the limit switch (63). A spring (64) is fixed on the upper surface of the pressure arm (62) near the pressure plate (65) and abuts against the fixed seat (61).

7. The online FCT-ICT precision alignment testing device according to claim 5, characterized in that, The baffle assembly (70) includes a guide rail (71) with a slider (72), the slider (72) is fixedly connected to a baffle plate (73), and an electric cylinder (74) is fixed on the guide rail (71). The piston rod of the electric cylinder (74) is fixed to the baffle plate (73). The second guide rail (71) is vertically fixed on the frame (51).

8. The online FCT-ICT precision alignment testing device according to claim 1, characterized in that, The carrier plate mechanism (30) includes a support plate (31) fixed to the bottom of the fixed frame (10) and L-shaped pads (32) symmetrically fixed on the support plate (31). An electric cylinder (34) is fixed to the bottom of the support plate (31), and the piston rod of the electric cylinder (34) is fixedly connected to the pressure rod (33).

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