Automatic detection and automatic aging loading and unloading device for surface-mounted resistor-capacitor devices

Abstract

The automatic detection and automatic aging assembling and disassembling device of surface-mounted resistor capacitor device relates to an aging test device. The device comprises a platform frame, parallel guide rails, vertical guide rails, a suction head device, a resistance-capacitance test board, an LCR capacitor tester, an electric fly and an aging tooling plate. The two parallel guide rails are installed on both sides of the platform frame, and the vertical guide rails are installed on the two parallel guide rails and are perpendicular to the parallel guide rails. The suction head device is installed on the vertical guide rails. The resistance-capacitance test board is installed at the front end of the platform frame, and the LCR capacitor tester is connected with the resistance-capacitance test board through wires. The electric fly is arranged at the front end of the platform frame. The aging tooling plate is placed at the middle and rear positions of the platform frame. The CCD camera of the device can realize accurate identification of the positions of the device and the aging test electrode, the electromagnetic valve controls the on-off of the airflow, realizes the adsorption and separation of the device by the suction nozzle, and places the device on the resistance-capacitance test board to test the performance parameters. The operation process does not require personnel participation, reduces the working strength of the personnel, and improves the efficiency.

Description

Technical Field

[0001] This invention relates to aging test equipment, and more particularly to an automatic detection and aging loading and unloading device for surface-mount resistors and capacitors that requires no human intervention during operation, reduces the workload of personnel, and improves efficiency. Background Technology

[0002] Aging tests are an important method for evaluating the reliability and lifespan of electronic devices. By applying conditions such as temperature and electrical stress, devices that are prone to early failure are screened out. The performance parameters of resistors / capacitors need to be tested before and after the aging test. Resistors / capacitors that pass the performance parameter tests are then installed in the test sockets of an aging test panel, which is then inserted into the aging test chamber for the aging test.

[0003] The aforementioned performance parameter testing process requires manual handling using tools such as tweezers to pick up resistors / capacitors and place them on the pins of an LCR meter for testing. Then, tweezers are used to pick up the qualified devices and insert them into the test sockets on the old-fashioned circuit board, resulting in low testing efficiency. Furthermore, with the increasing integration of electronic devices and their shrinking size, traditional methods are becoming increasingly difficult to implement. Summary of the Invention

[0004] The present invention aims to solve the problem that the existing aging test process relies on manual operation, which is difficult. It provides an automatic detection and automatic aging loading and unloading device for surface-mount resistors and capacitors that does not require human intervention, reduces the workload of personnel, and improves efficiency.

[0005] The automatic testing and aging loading / unloading device for surface-mount resistors and capacitors of the present invention is characterized in that the loading / unloading device includes a platform frame, parallel guide rails, vertical guide rails, a suction head device, a resistance-capacitance test plate, an LCR capacitance tester, an electric feeder, and an aging loading plate. Two parallel guide rails are installed parallel to each other on both sides of the platform frame, and a vertical guide rail is installed on the two parallel guide rails and perpendicular to them. The suction head device is installed on the vertical guide rails. The resistance-capacitance test plate is installed at the front end of the platform frame, and the LCR capacitance tester is connected to the resistance-capacitance test plate via a wire. The electric feeder is located at the front end of the platform frame. The aging loading plate is placed in the middle to rear position of the platform frame. Wherein:

[0006] The suction head assembly includes a stepper motor, a slide rail, a solenoid valve, a suction nozzle, an air tube, a CCD camera, an LED light, a worm gear, and a worm. The stepper motor is fixed on the vertical guide rail and slides along it. The slide rail is located in front of the stepper motor and perpendicular to the platform frame. The worm gear is fixed on the stepper motor shaft, and the upper section of the worm has teeth that mesh with the worm gear, allowing the stepper motor to drive the worm to move up and down via the worm gear. The solenoid valve is installed on the lower section of the worm and moves up and down with it. An air nozzle is installed at the bottom of the solenoid valve, and the top of the solenoid valve is connected to the air tube. The CCD camera is installed on the right side of the solenoid valve and has an LED light.

[0007] Several aging test sockets are set on the old chemical equipment plate.

[0008] The aging test fixture is provided with a groove, and a pressure strip is provided along the edge of the groove. Test electrodes are provided on the inner wall of the groove. A spring is provided at the bottom of the solenoid valve. The spring is located around the air nozzle, and the length of the spring is greater than the length of the air nozzle. The diameter of the spring is not less than the width of the groove.

[0009] When the solenoid valve places the device into the aging test socket, it first uses air pressure to attract the device to the air nozzle, then the spring at the bottom squeezes the pressure strip along the edge of the groove, and then the solenoid valve closes the air tube, and the device falls onto the test electrode, and the test can begin.

[0010] The platform frame is also equipped with a qualified product area and a non-qualified product area, which are located at the front end of the platform frame and above the resistance and capacitance test board.

[0011] Both the parallel guide rail and the vertical guide rail are equipped with drive motors. The drive motors drive the parallel guide rail and the vertical guide rail to slide, adjusting the position of the vertical guide rail on the parallel guide rail and the position of the suction head device on the vertical guide rail.

[0012] The testing method for this device is as follows:

[0013] a) Establish a coordinate system with the parallel guide rail as the X-axis, the vertical guide rail as the Y-axis, and the worm gear as the Z-axis. Establish spatial position coordinate systems (X, Y, Z) for the electric feeder, qualified product area, unqualified product area, resistance and capacitance test board, and aging test socket respectively.

[0014] b) Coordinate deviation correction: First, calibrate the position of the nozzle and the coordinate deviation of the center of the CCD camera image; then sharpen the image of the aging test seat and the device image captured by the CCD camera to obtain the relative position of the test electrode and the device in the CCD camera. By comparing the coordinate deviation between the nozzle position and the CCD camera, the final coordinate position of the test electrode and the device can be obtained.

[0015] c) Testing: The parallel and vertical guide rails drive the suction head device to the electric feeder position. The CCD camera identifies the precise position of the resistance component on the electric feeder. The position of the vertical guide rail and suction head device is finely adjusted. The stepper motor on the suction head device drives the solenoid valve and nozzle to move downward. After reaching the position, the solenoid valve opens, and the negative pressure in the air tube causes the nozzle to suck up the resistance component. Then the suction head device moves to the resistance-capacitance test plate position to test the performance parameters of the resistance component.

[0016] d) Devices that fail the performance parameter test are placed in the defective product area, while devices that pass the test are transferred to the aging test holder on the aging test plate and the test electrode. The position coordinates of the test electrode are accurately measured again by a CCD camera. The stepper motor on the suction head device drives the solenoid valve and the suction nozzle to move downward. The spring outside the suction nozzle squeezes the pressure bar on the aging test holder, and the suction nozzle inserts the device into the test electrode. Then the solenoid valve closes.

[0017] e) Repeat steps c) and d) above until the test electrodes on the aging test holders on the old chemical substrate are filled with the devices under test. The device is now working. After that, remove the old chemical substrate and proceed to the next step.

[0018] The automatic detection and aging loading / unloading device for surface-mount resistors and capacitors of this invention is scientifically designed, easy to use, and rationally structured. The CCD camera in the suction head device enables precise identification of the device and aging test electrodes. A solenoid valve controls the airflow, allowing the suction nozzle to pick up and detach the device. Finally, under the control of the parallel guide rail and the suction head device, movement in the X, Y, and Z directions is achieved, placing the device onto the resistance-capacitance test plate for performance parameter testing. Devices that pass the test are automatically inserted into the test electrodes of the aging test holder. This entire operation requires no human intervention, reducing workload and improving efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the system structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the suction head device.

[0021] Figure 3 This is a schematic diagram of the aging test fixture.

[0022] Figure 4 A schematic diagram illustrating the loading and unloading of container components.

[0023] The components include: platform frame 1, parallel guide rail 2, vertical guide rail 3, suction head device 4, resistance-capacitance test board 5, LCR capacitance tester 6, electric feeder 7, aging chemical loading plate 8, stepper motor 9, slide rail 10, solenoid valve 11, suction nozzle 12, air tube 13, CCD camera 14, LED light 15, worm gear 16, worm 17, aging test seat 18, pressure bar 19, test electrode 20, qualified product area 21, unqualified product area 22, and spring 23. Detailed Implementation

[0024] Example 1: An automatic testing and aging loading / unloading device for surface-mount resistors and capacitors includes a platform frame, parallel guide rails, a vertical guide rail, a suction head device, a resistance-capacitance test board, an LCR capacitance tester, an electric feeder, and an aging loading plate. Two parallel guide rails are installed parallel to each other on both sides of the platform frame, and a vertical guide rail is installed on the two parallel guide rails and perpendicular to them. The suction head device is installed on the vertical guide rail. The resistance-capacitance test board is installed at the front end of the platform frame, and the LCR capacitance tester is connected to the resistance-capacitance test board via wires. The electric feeder is located at the front end of the platform frame. The aging loading plate is placed in the middle to rear position of the platform frame. Wherein:

[0025] The suction head assembly includes a stepper motor, a slide rail, a solenoid valve, a suction nozzle, an air tube, a CCD camera, an LED light, a worm gear, and a worm. The stepper motor is fixed on the vertical guide rail and slides along it. The slide rail is located in front of the stepper motor and perpendicular to the platform frame. The worm gear is fixed on the stepper motor shaft, and the upper section of the worm has teeth that mesh with the worm gear, allowing the stepper motor to drive the worm to move up and down via the worm gear. The solenoid valve is installed on the lower section of the worm and moves up and down with it. An air nozzle is installed at the bottom of the solenoid valve, and the top of the solenoid valve is connected to the air tube. The CCD camera is installed on the right side of the solenoid valve and has an LED light.

[0026] Several aging test sockets are set on the old chemical equipment plate.

[0027] The aging test fixture has a groove with a pressure strip along the edge and test electrodes on the inner wall of the groove. A spring is located at the bottom of the solenoid valve, around the air nozzle. The spring length is greater than the air nozzle length, and the spring diameter is not less than the groove width.

[0028] When the solenoid valve places the device into the aging test socket, it first uses air pressure to attract the device to the air nozzle, then the spring at the bottom squeezes the pressure strip along the edge of the groove, and then the solenoid valve closes the air tube, and the device falls onto the test electrode, and the test can begin.

[0029] The platform frame is also equipped with a qualified product area and a non-qualified product area. The qualified product area and the non-qualified product area are located at the front of the platform frame and above the resistance and capacitance test board.

[0030] Both the parallel guide rail and the vertical guide rail are equipped with drive motors. The drive motors drive the parallel guide rail and the vertical guide rail to slide, adjusting the position of the vertical guide rail on the parallel guide rail and the position of the suction head device on the vertical guide rail.

[0031] The testing method for this device is as follows:

[0032] a) Establish a coordinate system with the parallel guide rail as the X-axis, the vertical guide rail as the Y-axis, and the worm gear as the Z-axis. Establish spatial position coordinate systems (X, Y, Z) for the electric feeder, qualified product area, unqualified product area, resistance and capacitance test board, and aging test socket respectively.

[0033] b) Coordinate deviation correction: First, calibrate the coordinate deviation between the nozzle position and the center of the CCD camera image; then, sharpen the images of the aging test stand and the device captured by the CCD camera. Because the aging test stand is made of plastic except for the test electrodes which are made of metal, and the electrodes of the device are distributed at both ends of the device and are made of metal, the reflectivity of the LED light is high when it shines on the metal material. In the image captured by the CCD camera, the brightness of the metal material is high. After image sharpening, the relative positions of the test electrodes and the device in the CCD camera can be obtained. By comparing the coordinate deviation between the nozzle position and the CCD camera, the final coordinate positions of the test electrodes and the device can be obtained.

[0034] c) Testing: The parallel and vertical guide rails drive the suction head device to the electric feeder position. The CCD camera identifies the precise position of the resistance component on the electric feeder. The position of the vertical guide rail and suction head device is finely adjusted. The stepper motor on the suction head device drives the solenoid valve and nozzle to move downward. After reaching the position, the solenoid valve opens, and the negative pressure in the air tube causes the nozzle to suck up the resistance component. Then the suction head device moves to the resistance-capacitance test plate position to test the performance parameters of the resistance component.

[0035] d) Devices that fail the performance parameter test are placed in the defective product area, while devices that pass the test are transferred to the aging test holder on the aging test plate and the test electrode. The position coordinates of the test electrode are accurately measured again by a CCD camera. The stepper motor on the suction head device drives the solenoid valve and the suction nozzle to move downward. The spring outside the suction nozzle squeezes the pressure bar on the aging test holder, and the suction nozzle inserts the device into the test electrode. Then the solenoid valve closes.

[0036] e) Repeat steps c) and d) above until the test electrodes on the aging test holders on the old chemical substrate are filled with the devices under test. The device is now working. After that, remove the old chemical substrate and proceed to the next step.

Claims

1. An automatic detection and automatic aging loading and unloading device for surface-mount resistors and capacitors, characterized in that... The loading and unloading device includes a platform frame, parallel guide rails, vertical guide rails, a suction head device, a resistance-capacitance test plate, an LCR capacitance tester, an electric feeder, and an old chemical loading plate. Two parallel guide rails are installed parallel to each other on both sides of the platform frame, and the vertical guide rails are installed on the two parallel guide rails and perpendicular to them. The suction head device is installed on the vertical guide rails. The resistance-capacitance test plate is installed at the front end of the platform frame, and the LCR capacitance tester is connected to the resistance-capacitance test plate via wires. The electric feeder is located at the front end of the platform frame. The old chemical loading plate is placed in the middle to rear position of the platform frame. Among these components: The suction head assembly includes a stepper motor, a slide rail, a solenoid valve, a suction nozzle, an air tube, a CCD camera, an LED light, a worm gear, and a worm. The stepper motor is fixed on the vertical guide rail and slides along it. The slide rail is located in front of the stepper motor and perpendicular to the platform frame. The worm gear is fixed on the stepper motor shaft, and the upper section of the worm has teeth that mesh with the worm gear, allowing the stepper motor to drive the worm to move up and down via the worm gear. The solenoid valve is installed on the lower section of the worm and moves up and down with it. A suction nozzle is installed at the bottom of the solenoid valve, and the top of the solenoid valve is connected to the air tube. The CCD camera is installed on the right side of the solenoid valve and has an LED light. Several aging test sockets are set on the old chemical equipment plate.

2. The automatic detection and automatic aging loading and unloading device for surface-mount resistors and capacitors as described in claim 1, characterized in that... The aging test fixture is provided with a groove, and a pressure strip is provided along the edge of the groove. Test electrodes are provided on the inner wall of the groove. A spring is provided at the bottom of the solenoid valve. The spring is located around the suction nozzle. The length of the spring is greater than the length of the suction nozzle, and the diameter of the spring is not less than the width of the groove.

3. The automatic detection and automatic aging loading and unloading device for surface-mount resistors and capacitors as described in claim 1, characterized in that... The platform frame is also equipped with a qualified product area and a non-qualified product area, which are located at the front end of the platform frame and above the resistance and capacitance test board.

4. The automatic detection and automatic aging loading and unloading device for surface-mount resistors and capacitors as described in claim 1, characterized in that... Both the parallel guide rail and the vertical guide rail are equipped with drive motors. The drive motors drive the parallel guide rail and the vertical guide rail to slide, adjusting the position of the vertical guide rail on the parallel guide rail and the position of the suction head device on the vertical guide rail.

5. The automatic detection and automatic aging loading and unloading device for surface-mount resistors and capacitors as described in claim 1, characterized in that... The testing method for this device is as follows: a) Establish a coordinate system with the parallel guide rail as the X-axis, the vertical guide rail as the Y-axis, and the worm gear as the Z-axis. Establish spatial position coordinate systems (X, Y, Z) for the electric feeder, qualified product area, unqualified product area, resistance and capacitance test board, and aging test socket respectively. b) Coordinate deviation correction: First, calibrate the position of the nozzle and the coordinate deviation of the center of the CCD camera image; then sharpen the image of the aging test seat and the device image captured by the CCD camera to obtain the relative position of the test electrode and the device in the CCD camera. By comparing the coordinate deviation between the nozzle position and the CCD camera, the final coordinate position of the test electrode and the device can be obtained. c) Testing: The parallel and vertical guide rails drive the suction head device to the electric feeder position. The CCD camera identifies the precise position of the resistance component on the electric feeder. The position of the vertical guide rail and suction head device is finely adjusted. The stepper motor on the suction head device drives the solenoid valve and the nozzle to move downward. After reaching the position, the solenoid valve opens, and the negative pressure in the air tube causes the nozzle to suck up the resistance component. Then the suction head device moves to the resistance-capacitance test plate position to test the performance parameters of the resistance component. d) Devices that fail the performance parameter test are placed in the defective product area, while devices that pass the test are transferred to the aging test holder on the aging test plate and the test electrode. The position coordinates of the test electrode are accurately measured again by a CCD camera. The stepper motor on the suction head device drives the solenoid valve and the suction nozzle to move downward. The spring outside the suction nozzle squeezes the pressure bar on the aging test holder, and the suction nozzle inserts the device into the test electrode. Then the solenoid valve closes. e) Repeat steps c) and d) above until the test electrodes on the aging test holders on the old chemical substrate are filled with the devices under test. The device is now working. After that, remove the old chemical substrate and proceed to the next step.

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