An automatic testing and sorting device for varistors

Abstract

This utility model discloses an automatic testing and sorting device for varistors, relating to the field of automatic varistor testing technology. It includes a frame and a controller. The controller is fixedly installed at the bottom of the frame. A varistor tester is installed at the top of the frame. A computer is installed at the top of the frame, next to the varistor tester. Conveyor belts are installed on both sides of the middle section of the frame. Multiple fixing fixtures are installed on the upper surface of the conveyor belts. Fixture sensing plates are installed on the upper side of each fixing fixture. A testing station is located in the middle of the frame, above the conveyor belts. A test pressing cylinder is installed on the lower surface of the testing station. A test station arrival sensor is installed below the testing station. This utility model can automatically sort varistors according to different measured voltage levels, greatly saving manpower and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automatic testing technology for varistors, and specifically to an automatic testing and sorting device for varistors. Background Technology

[0002] A varistor is a resistive device with nonlinear current-voltage characteristics, primarily used for voltage clamping when a circuit experiences overvoltage, absorbing excess current to protect sensitive components. During the manufacturing process, factors such as manufacturing processes and the environment can cause the actual starting operating voltage (a key parameter of the varistor, abbreviated as U1mA) of the varistor to be discretely distributed around the designed U1mA. For industries with strict protection voltage requirements, it is necessary to ensure good consistency of the U1mA of the varistors used. Therefore, varistor sorting is required. Currently, the commonly used sorting method is manual testing and sorting, which is not only labor-intensive but also very inefficient. Utility Model Content

[0003] In view of the problems existing in the above-mentioned varistor testing and sorting devices, this utility model is proposed.

[0004] Therefore, the purpose of this utility model is to provide an automatic testing and sorting device for varistors, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An automatic testing and sorting device for varistors includes a frame and a controller. The controller is fixedly installed at the bottom of the frame. A varistor tester is installed at the top of the frame. A computer is installed at the top of the frame, next to the varistor tester. Conveyor belts are installed on both sides of the middle section of the frame. Multiple fixing fixtures are installed on the upper surface of the conveyor belts. Fixture sensing plates are installed on the upper side of each fixing fixture. A testing station is installed inside the frame, above the middle of the conveyor belts. A testing cylinder is installed on the lower surface of the testing station. A test station arrival sensor is installed below the test station. A material-picking and pressing cylinder is installed in front of the test station. A material-picking cylinder is installed below the material-picking and pressing cylinder. A sorting and transporting cylinder is installed between the conveyor belts on both sides. Sorting stations are installed on both sides behind the test station. A sorting station arrival sensor is installed on the side of the sorting station closest to the test station. Multiple voltage level material frames are installed on the lower side inside the sorting station. A sorting level cylinder is installed above the voltage level material frames. A material-picking and transporting cylinder is installed above the sorting stations on both sides.

[0007] Preferably, the computer and the varistor tester are connected via a first serial port.

[0008] Preferably, the computer and the controller are connected via a second serial port.

[0009] Preferably, both conveyor belts on both sides are driven by motors.

[0010] Preferably, the controller is a PLC controller.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0012] 1. This utility model, through automated process design, eliminates the need for manual intervention throughout the entire process from varistor feeding and testing to sorting. The controller controls the conveyor belt, cylinders and other components to work together, replacing the traditional manual testing and sorting method, greatly reducing labor intensity and saving labor costs.

[0013] 2. This utility model, through a precise testing and sorting mechanism, uses a varistor tester to accurately measure the voltage data of the varistor. After the computer analyzes the data, the controller controls the precise actions of the sorting cylinder and the material handling cylinder according to different voltage levels, realizing automatic sorting. Compared with manual operation, the efficiency is greatly improved, and a large number of varistors can be processed quickly to meet production needs.

[0014] 3. This utility model, through the cooperation of sensors and fixtures, with the fixture sensing plate cooperating with the arrival sensors at the testing station and the sorting station, can accurately position and fix the fixture, ensuring the accurate position of the varistor during testing and sorting, guaranteeing the accuracy and stability of testing and sorting, and reducing errors caused by positional deviations. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the structure of an automatic testing and sorting device for varistors proposed in this utility model;

[0017] Figure 2 for Figure 1 Internal structure diagram;

[0018] Figure 3 This is a flowchart illustrating the usage of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Controller; 2. Varistor tester; 200. Fixture; 201. Test station arrival sensor; 202. Sorting station arrival sensor; 203. Fixture sensing plate; 204. Frame; 3. Conveyor belt; 300. Voltage range material box; 4. Test pressing cylinder; 5. Computer; 6. Test pressing cylinder; 7. Picking cylinder; 8. Sorting and handling cylinder; 9. Picking and handling cylinder; 10. Sorting range cylinder. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] This utility model discloses an automatic testing and sorting device for varistors.

[0023] Reference Figure 1-3 An automatic testing and sorting device for varistors includes a frame 204 and a controller 1. The controller 1 is fixedly installed at the bottom of the frame 204 and is a PLC controller. A varistor tester 2 is installed at the top of the frame 204. A computer 5 is installed at the top of the frame 204, next to the varistor tester 2. The computer 5 is connected to the varistor tester 2 via a first serial port to read the test data of the varistor measured by the varistor tester 2. The computer 5 is connected to the controller 1 via a second serial port to write the sorting level data into the controller. Conveyor belts 3 are installed on both sides of the middle of the frame 204. Both conveyor belts 3 are driven by motors. Multiple fixing fixtures 200 are installed on the upper surface of the conveyor belts 3, and fixtures are installed on the upper side of the fixing fixtures 200. A test station is located inside the sensor 203 and above the middle of the frame 204, above the conveyor belt 3. A test pressing cylinder 4 is installed on the lower surface of the test station. A test station arrival sensor 201 is installed in the middle of the frame 204 and below the test station. A material picking pressing cylinder 6 is installed in front of the test station. A material picking cylinder 7 is installed below the material picking pressing cylinder 6. A sorting and conveying cylinder 8 is installed between the two conveyor belts 3. Sorting stations are installed on both sides behind the test station. A sorting station arrival sensor 202 is installed on the side of the sorting station closest to the test station. Multiple voltage level material boxes 300 are installed on the lower side of the interior of the sorting station. A sorting level cylinder 10 is installed above the voltage level material boxes 300. Material picking and conveying cylinders 9 are installed above the sorting stations on both sides.

[0024] In this invention, during use, computer 5 is first connected to varistor tester 2 via the first serial port, and then computer 5 is connected to controller 1 via the second serial port. Computer 5 is used to set the parameters required for testing the varistor, record and analyze the test data, and then place the varistor under test on the fixed fixture 200. Controller 1 controls the conveyor belt 3 to run. The fixed fixture 200 moves to the testing position, and the fixture sensing plate 203 blocks the sensor 201 at the testing position. Controller 1 then stops the conveyor belt 3 and controls the test pressing cylinder 4 to press down. After pressing down to the correct position, varistor tester 2 begins testing. After the test is completed, test pressing cylinder 4 rises, computer 5 reads and analyzes the test data, and then writes the sorting signal into controller 1. Controller 1 then controls the conveyor belt 3... In operation, the fixed fixture 200 moves to the sorting station and the fixture sensing plate 203 blocks the sorting station to reach the sensor 202. The corresponding sorting gear cylinder 10 presses down. After the controller 1 controls the material-picking pressing cylinder 6 to press down to the position, the material-picking cylinder 7 grabs the tested varistor. Then the material-picking pressing cylinder 6 rises. After the material-picking pressing cylinder 6 rises to the position, the material-picking transport cylinder 9 moves forward to the limit position. The material-picking cylinder 7 places the varistor at the sorting transport station. The material-picking transport cylinder 9 returns to the origin. At the same time, the sorting transport cylinder 8 transports the varistor forward to the limit position. During this period, the sorting gear cylinder 10 will block the varistor, causing the varistor to fall into the corresponding voltage gear material box 300. Then the sorting transport cylinder 8 returns to the origin, and the gear sorting cylinder 10 returns to the origin, completing one automatic varistor testing and sorting process.

[0025] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic testing and sorting device for varistors, comprising a frame (204) and a controller (1), characterized in that: The controller (1) is fixedly installed at the bottom of the inside of the frame (204). A varistor tester (2) is installed at the top of the inside of the frame (204). A computer (5) is installed at the top of the inside of the frame (204) and on one side of the varistor tester (2). Conveyor belts (3) are installed on both sides of the middle of the frame (204). Multiple fixing fixtures (200) are installed on the upper surface of the conveyor belts (3). Fixture sensing plates (203) are installed on the upper side of the fixing fixtures (200). A test station is installed in the middle of the inside of the frame (204) above the conveyor belts (3). A test pressing cylinder (4) is installed on the lower surface of the test station. A test station arrival sensor (201) is set in the middle and below the test station. A material picking and pressing cylinder (6) is set in front of the test station. A material picking cylinder (7) is set below the material picking and pressing cylinder (6). A sorting and transporting cylinder (8) is set between the two conveyor belts (3). Sorting stations are set on both sides behind the test station. A sorting station arrival sensor (202) is set on the side of the sorting station close to the test station. Multiple voltage level material boxes (300) are set on the lower side inside the sorting station. A sorting level cylinder (10) is set above the voltage level material box (300). A material picking and transporting cylinder (9) is set above the sorting stations on both sides.

2. The apparatus according to claim 1, characterized in that: The computer (5) is connected to the varistor tester (2) via the first serial port.

3. The apparatus according to claim 1, characterized in that: The computer (5) and the controller (1) are connected via a second serial port.

4. The apparatus according to claim 1, characterized in that: Both conveyor belts (3) on both sides are driven by motors.

5. The apparatus according to claim 1, characterized in that: The controller (1) is a PLC controller.

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