Automatic detection and automatic aging loading and unloading device for surface-mounted resistors and capacitors

Abstract

The invention discloses an automatic detection and automatic aging loading and unloading device for surface-mounted resistors and capacitors, and relates to an aging test device. The device comprises a platform frame, parallel guide rails, a vertical guide rail, a suction head device, a resistance-capacitance test plate, an LCR capacitance tester, an electric feeder and an aging tool plate, the two parallel guide rails are installed on the two sides of the platform frame in parallel, and the vertical guide rail is installed on the two parallel guide rails and is perpendicular to the parallel guide rails; the suction head device is mounted 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 with the resistance-capacitance test board through a wire. The electric feeder is arranged at the front end of the platform frame; the aging tool plate is placed at the middle rear position of the platform frame; the CCD camera can realize accurate identification of positions of the device and the aging test electrode, the electromagnetic valve controls on-off of airflow, adsorption and separation of the device by the suction nozzle are realized, and the device is placed on the resistance-capacitance test plate for performance parameter test. The operation process does not need personnel participation, the working intensity of personnel is reduced, and the efficiency is improved.

Description

Technical Field

[0001] The invention relates to an aging test device, in particular to an automatic detection and aging assembly and disassembly device for surface mounted resistor and capacitor components, which does not require personnel participation during the operation process, reduces personnel workload and improves efficiency. Background Art

[0002] Aging test is an important method for evaluating the reliability and life of electronic devices. It can screen out early failure devices by applying temperature, electrical stress and other conditions. It is necessary to test the performance parameters of resistors / capacitors before and after the aging test, install the resistors / capacitors that have passed the performance parameter test on the test socket of the aging board, and then insert the aging board into the aging test box for aging test.

[0003] The above performance parameter test process requires people to use tweezers and other tools to pick up the resistor / capacitor device and place it on the pins of the LCR test meter for testing, and then use tweezers to pick up the qualified device and insert it into the test socket of the old chemical board, which has low test efficiency. And with the development of electronic device integration, the size of the device is getting smaller and smaller, and the traditional operation method is more difficult. Summary of the invention

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

[0005] The automatic detection and automatic aging loading and unloading device for surface mounted resistor and capacitor components of the present invention is characterized in that the loading and unloading device comprises a platform frame, parallel guide rails, vertical guide rails, a suction head device, a resistance and capacitance test board, an LCR capacitance tester, an electric feeder and an aging chemical board, two parallel guide rails are parallelly installed on both sides of the platform frame, the vertical guide rail is installed on the two parallel guide rails and is perpendicular to the parallel guide rails; the suction head device is installed on the vertical guide rail; the resistance and capacitance test board is installed on the front end of the platform frame, and the LCR capacitance tester is connected to the resistance and capacitance test board through a wire; the electric feeder is arranged at the front end of the platform frame; the aging chemical board is placed at the middle and rear position of the platform frame; wherein: The suction head device includes a stepper motor, a slide rail, a solenoid valve, a suction nozzle, an air pipe, a CCD camera, an LED light, a worm wheel and a worm. The stepper motor is fixed on the vertical guide rail and slides along the vertical guide rail; the slide rail is arranged in front of the stepper motor and is perpendicular to the platform frame; the worm wheel is fixed on the rotating shaft of the stepper motor, and the upper section of the worm is provided with teeth, which mesh with the worm wheel, and the stepper motor drives the worm to move up and down through the worm wheel; the solenoid valve is installed on the lower section of the worm and moves up and down with the worm; the air nozzle is installed at the bottom of the solenoid valve, and the top of the solenoid valve is connected to the air pipe; the CCD camera is installed on the right side of the solenoid valve, and an LED light is arranged on the CCD camera; There are several aging test sockets on the old chemical panel.

[0006] The aging test seat is provided with a groove, a pressure strip is provided at the edge of the groove, and a test electrode is 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, the spring length is greater than the air nozzle length, and the spring diameter is not less than the groove width.

[0007] When the solenoid valve puts the device into the aging test seat, it first uses air pressure to adsorb the device on the air nozzle, and then squeezes the pressure strip on the edge of the groove through the spring at the bottom. After that, the solenoid valve closes the air pipe, and the device falls onto the test electrode, and the test can begin.

[0008] The platform frame is also provided with a qualified product area and a failed product area, which are arranged at the front end of the platform frame and above the resistance and capacitance test board.

[0009] The parallel guide rails and the vertical guide rails are both provided with driving motors, which drive the parallel guide rails and the vertical guide rails to slide, and adjust the position of the vertical guide rails on the parallel guide rails and the position of the suction head device on the vertical guide rails.

[0010] The test method of 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 as the Z-axis. Establish the (X, Y, Z) spatial position coordinate system for the electric feeder, qualified product area, unqualified product area, resistance and capacitance test board, and aging test seat respectively; b) Coordinate deviation correction: first calibrate the nozzle position and the coordinate deviation of the CCD camera image center; then sharpen the aging test seat image and device image taken by the CCD camera to obtain the relative position of the test electrode and the device in the CCD camera, and compare the nozzle position with the coordinate deviation of the CCD camera to obtain the final coordinate position of the test electrode and the device; c) Testing: driving the parallel rails and vertical rails to drive the suction head device to move to the electric feeder position. The CCD camera identifies the precise position of the resistor and capacitor on the electric feeder, and fine-tunes the position of the vertical rails and the suction head device. The stepper motor on the suction head device drives the solenoid valve and the suction nozzle to move downward. After reaching the position, the solenoid valve opens, and the negative pressure in the air pipe causes the air nozzle to suck the resistor and capacitor. Then the suction head device moves to the resistor and capacitor test board position to test the performance parameters of the resistor and capacitor. d) Devices that fail the performance parameter test are placed in the defective product area, and devices that pass the test flow to the test electrode of the aging test seat on the aging chemical assembly board. The CCD camera is used to accurately measure the position coordinates of the test electrode again. 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 strip on the aging test seat, and the suction nozzle inserts the device into the test electrode, and then the solenoid valve is closed; e) Repeat the above steps c) and d) until the test electrodes on the aging test socket on the old chemical board are fully inserted with the devices to be tested, and the work of this device is completed. Then remove the old chemical board and proceed to the next step.

[0011] The automatic detection and automatic aging loading and unloading device for surface mounted resistor and capacitor devices of the present invention has a scientific design, is easy to use, and has a reasonable structure. The CCD camera in the suction head device can realize accurate position identification of the device and the aging test electrode. The electromagnetic valve controls the on and off of the airflow to realize the suction nozzle to adsorb and detach the device. Finally, under the control of the parallel guide rail and the suction head device, the device is placed on the resistor and capacitor test board for performance parameter testing, and the qualified device is automatically inserted into the test electrode of the aging test seat. The operation process does not require human participation, which reduces the workload of the personnel and improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the system structure of the present invention.

[0013] Figure 2 Schematic diagram of the suction head device structure.

[0014] Figure 3 This is a schematic diagram of the aging test socket structure.

[0015] Figure 4 This is a schematic diagram of the loading and unloading of resistance container components.

[0016] Among them, platform frame 1, parallel guide rails 2, vertical guide rails 3, suction head device 4, resistance and capacitance test board 5, LCR capacitance tester 6, electric feeder 7, aging chemical board 8, stepper motor 9, slide rail 10, solenoid valve 11, suction nozzle 12, air pipe 13, CCD camera 14, LED light 15, worm gear 16, worm 17, aging test seat 18, pressure strip 19, test electrode 20, qualified product area 21, unqualified product area 22, spring 23. DETAILED DESCRIPTION

[0017] Embodiment 1: A surface mount resistor and capacitor device automatic detection and automatic aging loading and unloading device, comprising a platform frame, parallel guide rails, vertical guide rails, a suction head device, a resistor and capacitor test board, an LCR capacitor tester, an electric feeder and an aging chemical board, two parallel guide rails are parallelly installed on both sides of the platform frame, the vertical guide rail is installed on the two parallel guide rails and is perpendicular to the parallel guide rails; the suction head device is installed on the vertical guide rail; the resistor and capacitor test board is installed at the front end of the platform frame, and the LCR capacitor tester is connected to the resistor and capacitor test board through a wire; the electric feeder is set at the front end of the platform frame; the aging chemical board is placed at the middle and rear position of the platform frame; wherein: The suction head device includes a stepper motor, a slide rail, a solenoid valve, a suction nozzle, an air pipe, a CCD camera, an LED light, a worm wheel and a worm. The stepper motor is fixed on the vertical guide rail and slides along the vertical guide rail; the slide rail is arranged in front of the stepper motor and is perpendicular to the platform frame; the worm wheel is fixed on the rotating shaft of the stepper motor, and the upper section of the worm is provided with teeth, which mesh with the worm wheel, and the stepper motor drives the worm to move up and down through the worm wheel; the solenoid valve is installed on the lower section of the worm and moves up and down with the worm; the air nozzle is installed at the bottom of the solenoid valve, and the top of the solenoid valve is connected to the air pipe; the CCD camera is installed on the right side of the solenoid valve, and an LED light is arranged on the CCD camera; There are several aging test sockets on the old chemical panel.

[0018] The aging test seat is provided with a groove, a pressure strip is provided at the edge of the groove, and a test electrode is 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, the length of the spring is greater than the length of the air nozzle, and the diameter of the spring is not less than the width of the groove.

[0019] When the solenoid valve puts the device into the aging test seat, it first uses air pressure to adsorb the device on the air nozzle, and then squeezes the pressure strip on the edge of the groove through the spring at the bottom. After that, the solenoid valve closes the air pipe, and the device falls onto the test electrode, and the test can begin.

[0020] The platform frame is also provided with a qualified product area and a failed product area, which are arranged at the front end of the platform frame and above the resistance and capacitance test board.

[0021] The parallel guide rail and the vertical guide rail are both provided with a driving motor, and the driving motor drives the parallel guide rail and the vertical guide rail to slide, and adjusts 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.

[0022] The test method of 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 as the Z-axis. Establish the (X, Y, Z) spatial position coordinate system for the electric feeder, qualified product area, unqualified product area, resistance and capacitance test board, and aging test seat respectively; b) Coordinate deviation correction: First, calibrate the nozzle position and the coordinate deviation of the CCD camera image center; then sharpen the aging test seat image and the device image taken by the CCD camera, because the aging test seat is made of plastic materials except for the test electrode, which is made of metal. At the same time, the device electrodes are distributed at both ends of the device and are made of metal. When the light of the LED lamp shines on the metal material, the reflectivity is high. In the image collected by the CCD camera, the brightness of the metal material is high. After image sharpening, the relative position of the test electrode and the device in the CCD camera can be obtained. By comparing the nozzle position and the coordinate deviation of the CCD camera, the final coordinate position of the test electrode and the device can be obtained. c) Testing: driving the parallel rails and vertical rails to drive the suction head device to move to the electric feeder position. The CCD camera identifies the precise position of the resistor and capacitor on the electric feeder, and fine-tunes the position of the vertical rails and the suction head device. The stepper motor on the suction head device drives the solenoid valve and the suction nozzle to move downward. After reaching the position, the solenoid valve opens, and the negative pressure in the air pipe causes the air nozzle to suck the resistor and capacitor. Then the suction head device moves to the resistor and capacitor test board position to test the performance parameters of the resistor and capacitor. d) Devices that fail the performance parameter test are placed in the defective product area, and devices that pass the test flow to the test electrode of the aging test seat on the aging chemical assembly board. The CCD camera is used to accurately measure the position coordinates of the test electrode again. 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 strip on the aging test seat, and the suction nozzle inserts the device into the test electrode, and then the solenoid valve is closed; e) Repeat the above steps c) and d) until the test electrodes on the aging test socket on the old chemical board are fully inserted with the devices to be tested, and the work of this device is completed. Then remove the old chemical board and proceed to the next step.

Claims

1. A surface mount resistor and capacitor automatic detection and automatic aging loading and unloading device, characterized in that The loading and unloading device comprises a platform frame, parallel guide rails, vertical guide rails, a suction head device, a resistance and capacitance test board, an LCR capacitance tester, an electric feeder and an old chemical board. Two parallel guide rails are parallelly installed on both sides of the platform frame, and the vertical guide rail is installed on the two parallel guide rails and is perpendicular to the parallel guide rails; the suction head device is installed on the vertical guide rail; the resistance and capacitance test board is installed at the front end of the platform frame, and the LCR capacitance tester is connected to the resistance and capacitance test board through a wire; the electric feeder is arranged at the front end of the platform frame; the old chemical board is placed at the middle and rear position of the platform frame; wherein: The suction head device includes a stepper motor, a slide rail, a solenoid valve, a suction nozzle, an air pipe, a CCD camera, an LED light, a worm wheel and a worm. The stepper motor is fixed on the vertical guide rail and slides along the vertical guide rail; the slide rail is arranged in front of the stepper motor and is perpendicular to the platform frame; the worm wheel is fixed on the rotating shaft of the stepper motor, and the upper section of the worm is provided with teeth, which mesh with the worm wheel, and the stepper motor drives the worm to move up and down through the worm wheel; the solenoid valve is installed on the lower section of the worm and moves up and down with the worm; the air nozzle is installed at the bottom of the solenoid valve, and the top of the solenoid valve is connected to the air pipe; the CCD camera is installed on the right side of the solenoid valve, and an LED light is arranged on the CCD camera; There are several aging test sockets on the old chemical panel.

2. The automatic detection and aging assembly and disassembly device for surface mount resistors and capacitors as claimed in claim 1, characterized in that The aging test seat is provided with a groove, a pressure strip is provided at the edge of the groove, and a test electrode is 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, the spring length is greater than the air nozzle length, and the spring diameter is not less than the groove width.

3. The automatic detection and aging assembly and disassembly device for surface mount resistors and capacitors as claimed in claim 1, characterized in that The platform frame is also provided with a qualified product area and a failed product area, which are arranged at the front end of the platform frame and above the resistance and capacitance test board.

4. The automatic detection and aging assembly and disassembly device for surface mount resistors and capacitors as claimed in claim 1, characterized in that The parallel guide rails and the vertical guide rails are both provided with driving motors, which drive the parallel guide rails and the vertical guide rails to slide, and adjust the position of the vertical guide rails on the parallel guide rails and the position of the suction head device on the vertical guide rails.

5. The automatic detection and aging assembly and disassembly device for surface mount resistors and capacitors as claimed in claim 1, characterized in that The test method of 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 as the Z-axis. Establish the (X, Y, Z) spatial position coordinate system for the electric feeder, qualified product area, unqualified product area, resistance and capacitance test board, and aging test seat respectively; b) Coordinate deviation correction: first calibrate the nozzle position and the coordinate deviation of the CCD camera image center; then sharpen the aging test seat image and device image taken by the CCD camera to obtain the relative position of the test electrode and the device in the CCD camera, and compare the nozzle position with the coordinate deviation of the CCD camera to obtain the final coordinate position of the test electrode and the device; c) Testing: driving the parallel rails and vertical rails to drive the suction head device to move to the electric feeder position. The CCD camera identifies the precise position of the resistor and capacitor on the electric feeder, and fine-tunes the position of the vertical rails and the suction head device. The stepper motor on the suction head device drives the solenoid valve and the suction nozzle to move downward. After reaching the position, the solenoid valve opens, and the negative pressure in the air pipe causes the air nozzle to suck the resistor and capacitor. Then the suction head device moves to the resistor and capacitor test board position to test the performance parameters of the resistor and capacitor. d) Devices that fail the performance parameter test are placed in the defective product area, and devices that pass the test flow to the test electrode of the aging test seat on the aging chemical assembly board. The CCD camera is used to accurately measure the position coordinates of the test electrode again. 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 strip on the aging test seat, and the suction nozzle inserts the device into the test electrode, and then the solenoid valve is closed; e) Repeat the above steps c) and d) until the test electrodes on the aging test socket on the old chemical board are fully inserted with the devices to be tested, and the work of this device is completed. Then remove the old chemical board and proceed to the next step.

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