A pre-stress testing device

Abstract

The utility model discloses a kind of pre-pressure testing devices, including PLC control unit, positioning mobile mechanism, power-on test mechanism and pressure testing mechanism;Positioning mobile mechanism includes first servo motor and screw motion module, and its micrometer platform top multi-station test table is used to place the product to be measured;Power-on test mechanism includes second servo motor and test needle, and second servo motor drives test needle and the product to be measured contact power-on and feedback power-off signal;Pressure testing mechanism includes third servo motor, speed reducer and pressure tester, and third servo motor drives pressure tester to carry out multi-section type movement by speed reducer, until with the product to be measured trigger power-off;PLC control unit synchronously collects power-off instant pressure value and judges eligibility.The utility model designs a kind of pre-pressure testing device, by reasonable structure cooperation, adaptation multiple types of products, realizes that the product to be measured can be continuously automatically tested, operation is convenient and safe, improves product testing efficiency and precision.

Description

Technical Field

[0001] This utility model relates to the field of automated testing equipment technology, and in particular to a pre-pressure testing device. Background Technology

[0002] In the production and factory inspection of connectors, PCB sockets, and other products awaiting testing, it is necessary to simultaneously test the internal trigger pressure and power-off action to determine the product's pressure value and passability. Existing testing methods mostly employ manual assembly and operation, visually observing the power-off signal light, recording the pressure value, and then manually placing the next product on the line for testing. This method suffers from insufficient positioning accuracy, large data recording errors, low operational efficiency, poor product compatibility, and the inability to perform continuous testing of multiple products, making it difficult to meet the needs of automated production inspection. Therefore, there is an urgent need for a pre-stress testing device that offers precise positioning, convenient operation, and continuous automated testing capabilities. Utility Model Content

[0003] The purpose of this invention is to design a pre-pressure testing device to solve the problems of the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A pre-pressure testing device is provided, comprising a PLC control unit, a positioning and moving mechanism, a power-on testing mechanism, and a pressure testing mechanism. The positioning and moving mechanism includes a first servo motor and a lead screw motion module. A micrometer platform is positioned above the lead screw motion module, and a multi-station testing platform is positioned on top of the micrometer platform for placing the product to be tested. The first servo motor drives the lead screw motion module to move horizontally, thereby moving the micrometer platform horizontally to achieve positioning of the product to be tested. The power-on testing mechanism includes a second servo motor and a test probe. A servo motor drives the test probe to move up and down, making contact with the product under test and energizing it. It also provides real-time feedback of a power-off signal when the product under test is de-energized due to pressure. The pressure testing mechanism includes a third servo motor, a reducer, and a pressure tester. The third servo motor drives the pressure tester through the reducer to perform multi-stage movements up and down, first rapidly moving downwards to a safe distance, then slowly applying pressure to the product under test until the product triggers a power-off. The PLC control unit synchronously collects the pressure value of the pressure tester based on the power-off signal, compares it with a preset standard value, and automatically determines the pass / fail status of the product under test.

[0006] Furthermore, the pressure tester has a built-in pressure sensor for real-time acquisition of pressure values ​​during the pressure application process and for transmitting the pressure signal to the PLC control unit.

[0007] Furthermore, the micrometer platform is used for adjusting the multi-station test bench in the horizontal direction, and works in conjunction with the positioning and moving mechanism to achieve a positioning accuracy of ±0.012mm.

[0008] Furthermore, the multi-stage motion is a two-stage motion: the first stage involves a rapid downward movement to a safe distance, which is the distance between the pressure tester and the product under test without contact or impact; the second stage involves applying pressure to the product under test at a low speed, the speed of which is less than the speed of the rapid downward movement in the first stage, and the pressure application process is precisely controlled by the PLC control unit.

[0009] Furthermore, the pressure tester is equipped with a quick-change structure and a ejector pin. The ejector pin is detachably connected to the pressure tester through the quick-change structure to adapt to the testing requirements of different types of products under test.

[0010] Furthermore, it also includes a frame for placing the pre-pressure testing device, the frame being equipped with an indicator light, a start button, and an emergency stop button; when the test probe contacts the product under test and is energized, the indicator light illuminates; when the probe contacts the product under test and triggers a power-off, the indicator light goes out.

[0011] Furthermore, the multi-station test bench is equipped with a positioning structure adapted to the product under test to prevent the product under test from shifting during the test.

[0012] Furthermore, the power-on testing mechanism also includes an eccentric cam and a slider assembly. The motor shaft of the second servo motor is installed inside the center of the eccentric cam. During operation, the eccentric cam drives the slider assembly and the test probe to move in the up-down direction under the drive of the second servo motor, so as to realize that the test probe contacts the product under test and energizes it, and provides real-time feedback of the power-off signal of the product under test.

[0013] Furthermore, it also includes a display screen for displaying pressure values ​​and allowing for one-click switching of test parameters based on the type of product under test.

[0014] Compared with the prior art, the beneficial effects of the pre-pressure testing device provided by this utility model are as follows:

[0015] 1. Precise positioning: The positioning and moving mechanism works in conjunction with the micrometer platform to achieve a positioning accuracy of ±0.012mm, ensuring accurate pressure application and improving testing accuracy;

[0016] 2. Easy to operate: Test parameters can be switched with one click via the display screen, and the PLC control unit automatically completes pressure value data acquisition and pass / fail determination, simplifying the operation process;

[0017] 3. High adaptability: The ejector pin can be quickly replaced through a quick-change structure to adapt to the needs of different types of products under test;

[0018] 4. Operational safety: Equipped with a speed reducer to prevent the pressure tester from sliding down after a power outage, and equipped with an emergency stop button and indicator light to improve the operation and safety of the testing device;

[0019] 5. Continuous testing: The positioning and moving mechanism drives the multi-station test bench to move at equal distances, enabling continuous automatic testing of the product under test and improving testing efficiency. Attached Figure Description

[0020] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0021] Figure 1 A front view of a pre-pressure testing device provided in an embodiment of this utility model;

[0022] Figure 2 This is an embodiment of the present utility model. Figure 1 Enlarged structural diagram at point A;

[0023] Figure 3 A schematic diagram of the overall structure of a pre-pressure testing device provided in an embodiment of this utility model;

[0024] Figure 4 This is an embodiment of the present utility model. Figure 3 Enlarged structural diagram at point B;

[0025] Figure 5 A partial structural schematic diagram of a pre-stress testing device provided in an embodiment of this utility model;

[0026] Figure 6 A cross-sectional view of a pre-pressure testing device provided in an embodiment of this utility model.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] Positioning and moving mechanism-1, first servo motor-11, lead screw motion module-12, power-on testing mechanism-2, second servo motor-21, test stylus-22, eccentric cam-23, slider assembly-24, pressure testing mechanism-3, third servo motor-31, reducer-32, pressure tester-33, quick-change structure-331, ejector pin-332, micrometer platform-4, multi-station testing table-5, positioning structure-51, indicator light-6, start button-7, emergency stop button-8, display screen-9. Detailed Implementation

[0029] 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 scope of protection of the present utility model.

[0030] like Figures 1 to 6 The following is an embodiment of this application:

[0031] This utility model embodiment provides a pre-pressure testing device, including a PLC control unit, a positioning and moving mechanism 1, a power-on testing mechanism 2, and a pressure testing mechanism 3. Specifically:

[0032] The positioning and moving mechanism 1 includes a first servo motor 11 and a lead screw motion module 12. A micrometer platform 4 is disposed above the lead screw motion module 12. A multi-station test bench 5 is disposed on the top of the micrometer platform 4, and a positioning structure 51 for fixing the product under test is disposed on the multi-station test bench 5. The positioning structure 51 is adapted to the product under test and can realize the rapid fixing of the product under test, preventing the product under test from shifting during the test. The first servo motor 11 drives the lead screw motion module 12 along the horizontal direction (i.e., Figure 3 The micrometer platform 4 moves horizontally (in the X direction) to achieve equidistant movement of the multi-station test bench 5, which is suitable for continuous automatic testing of the product under test. It eliminates the need for manual repositioning and improves testing efficiency. The micrometer platform 4 can be used for high-precision micro-adjustment of the multi-station test bench 5 in the horizontal direction. It works in conjunction with the positioning and moving mechanism 1 to achieve a positioning accuracy of ±0.012mm.

[0033] The power-on testing mechanism 2 includes a second servo motor 21, a test probe 22, an eccentric cam 23, and a slider assembly 24. The second servo motor 21 drives the test probe 22 to move in the up-down direction, making contact with the product under test and providing power-on, and providing feedback on the power-off signal of the product under test. Specifically, the second servo motor 21 is a rotary servo motor, and the motor shaft of the second servo motor 21 is installed in the center of the eccentric cam 23. During operation, the eccentric cam 23, driven by the second servo motor 21, drives the slider assembly 24 and the test probe 22 to move in the up-down direction, so as to realize that the test probe 22 makes contact with the product under test and provides power-on, and provides feedback on the power-off signal of the product under test in real time. The structure is simple and the operation is stable.

[0034] The pressure testing mechanism 3 includes a third servo motor 31, a reducer 32, and a pressure testing instrument 33. The third servo motor 31 is fixedly connected to the reducer 32, and the output end of the reducer 32 is connected to the pressure testing instrument 33 via a transmission connection. The third servo motor 31 drives the pressure testing instrument 33 to perform a two-stage movement in the vertical direction through the reducer 32: the first stage involves a rapid downward movement to a safe distance, which is the distance between the pressure testing instrument 33 and the product under test without contact or impact; the second stage involves applying pressure to the product under test at a low speed, which is less than the speed of the rapid downward movement in the first stage. The pressure application process is precisely controlled by a PLC control unit to ensure accurate pressure application while avoiding impact damage to the product under test. The reducer 32 is also used to prevent the pressure testing instrument 33 from sliding down after a power outage, thereby improving the safety of equipment operation. In addition, the pressure tester 33 is provided with a quick-change structure 331 and a ejector pin 332. The ejector pin 332 is detachably connected to the pressure tester 33 through the quick-change structure 331. The ejector pin 332 can be quickly replaced through the quick-change structure 331 to adapt to the testing requirements of different types of products under test. In this embodiment, a pin is provided on the quick-change structure 331 to realize the quick replacement of the ejector pin 332. That is, the pin is pulled out, the ejector pin is removed, and the ejector pin can be replaced. After the replacement is completed, the pin is inserted to fix the ejector pin.

[0035] Furthermore, the device also includes a frame for housing the pre-pressure testing apparatus. The frame is equipped with an indicator light 6, a start button 7, and an emergency stop button 8. When the test probe 22 contacts and is energized with the product under test, the indicator light 6 illuminates, indicating to the operator that the equipment is in testing mode. When the push pin 332 applies pressure and triggers power-off with the product under test, the indicator light 6 goes out, indicating that the test is complete. The start button 7 is used to start the equipment testing process, and the emergency stop button 8 is used to cut off the power supply to the equipment and stop its operation in an emergency (such as equipment failure), ensuring the safety of the operator.

[0036] In addition, the pre-pressure testing device also includes a display screen 9, which is used to display pressure values ​​and switch test parameters with one click according to the type of product under test. The PLC control unit is connected to the first servo motor 11, the second servo motor 21, the third servo motor 31, the pressure tester 33, the indicator light 6, the start button 7, the emergency stop button 8, and the display screen 9, respectively, and is used to receive signals from each component and control the coordinated operation of each component; the PLC control unit has built-in storage of pressure standards and test parameters for different types of products under test, and the operator can select the type of product under test through the display screen 9 to achieve one-click switching of test parameters; according to the power-off signal fed back by the power-on testing mechanism 2, the PLC control unit synchronously collects the pressure value of the pressure tester 33, compares the collected pressure value with the preset standard value, and automatically determines the qualification of the product under test, and presents the test results (qualified or unqualified, pressure value) on the display screen 9, with good products showing green (qualified) and defective products showing red (unqualified); at the same time, it automatically records test data, which is convenient for subsequent traceability and statistics and simplifies the operation process.

[0037] The workflow of this embodiment is as follows:

[0038] 1. Equipment initialization: In this embodiment, the pressure value of eight consecutive connectors on the PCB is tested. The product to be tested is clamped on the positioning structure of the multi-station test bench. The operator selects the type of product to be tested through the display screen, the PLC control unit calls the corresponding parameters, and the equipment completes self-calibration.

[0039] 2. Positioning and feeding: The PLC control unit controls the first servo motor to start, and the first servo motor drives the lead screw motion module to move in the horizontal direction, which in turn drives the micrometer platform and the multi-station test bench to move in the horizontal direction, accurately delivering the product to be tested to the test station;

[0040] 3. Power-on preparation: The PLC control unit controls the second servo motor to start, which drives the eccentric cam to rotate, driving the slider assembly and test probe to move up and down, so that the test probe contacts the product under test and is powered on. At this time, the indicator light will light up.

[0041] 4. Precise pressure application and data acquisition: The PLC control unit controls the third servo motor to start. The third servo motor drives the pressure tester to move quickly to a safe distance through the reducer, and then slowly applies pressure to the product under test. The pressure tester collects the pressure value in real time and transmits it to the PLC control unit.

[0042] 5. Pass / Fail Judgment: When the product under test is powered off, the indicator light goes out, the test probe sends a power-off signal, and the PLC control unit simultaneously collects the pressure value at the moment of power-off, compares it with the preset standard, automatically judges the pass / fail status, and displays it on the display screen.

[0043] 6. Continuous testing: The PLC control unit controls the positioning and moving mechanism to drive the multi-station test bench to move, sending the next product to be tested to the test station. Repeat steps 3-5 above to realize continuous automatic testing of the product to be tested.

[0044] 7. Test Completion: After all products under test have been tested, the operator will view the test data statistics and results on the display screen to complete the test process.

[0045] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pre-stress testing device, characterized in that, include: PLC control unit, positioning and moving mechanism, power-on testing mechanism and pressure testing mechanism; The positioning and moving mechanism includes a first servo motor and a lead screw motion module. A micrometer platform is provided above the lead screw motion module, and a multi-station test stand is provided on the top of the micrometer platform. The multi-station test stand is used to place the product to be tested. The first servo motor drives the lead screw motion module to move in the horizontal direction, thereby driving the micrometer platform to move in the horizontal direction to realize the positioning of the product to be tested. The power-on testing mechanism includes a second servo motor and a test probe. The second servo motor drives the test probe to move in the up and down direction, contact the product under test to make power on it, and provides real-time feedback of the power-off signal when the product under test is de-energized due to pressure. The pressure testing mechanism includes a third servo motor, a reducer, and a pressure tester. The third servo motor drives the pressure tester to perform multi-stage movements in the up-down direction through the reducer. First, it moves quickly down to a safe distance, and then slowly applies pressure to the product under test until the product under test triggers a power outage. The PLC control unit synchronously collects the pressure value of the pressure tester according to the power failure signal, compares it with the preset standard value, and automatically determines the qualification of the product under test.

2. The pre-pressure testing device according to claim 1, characterized in that, The pressure tester has a built-in pressure sensor for real-time acquisition of pressure values ​​during the pressure application process and for transmitting the pressure signal to the PLC control unit.

3. The pre-pressure testing device according to claim 1, characterized in that, The micrometer platform is used to adjust the multi-station test bench in the horizontal direction, and works in conjunction with the positioning and moving mechanism to achieve a positioning accuracy of ±0.012mm.

4. The pre-pressure testing device according to claim 1, characterized in that, The multi-stage motion is a two-stage motion: the first stage is a rapid downward movement to a safe distance, which is the distance at which the pressure tester does not contact the product under test and does not generate impact; the second stage applies pressure to the product under test at a low speed, which is less than the speed of the rapid downward movement in the first stage, and the pressure application process is precisely controlled by the PLC control unit.

5. The pre-pressure testing device according to claim 1, characterized in that, The pressure tester is equipped with a quick-change structure and a ejector pin. The ejector pin is detachably connected to the pressure tester through the quick-change structure to adapt to the testing requirements of different types of products under test.

6. The pre-pressure testing device according to claim 5, characterized in that, It also includes a frame for placing the pre-pressure testing device, the frame being equipped with an indicator light, a start button and an emergency stop button; when the test probe contacts the product under test and is energized, the indicator light illuminates; when the probe contacts the product under test and triggers a power-off, the indicator light goes out.

7. The pre-pressure testing device according to claim 1, characterized in that, The multi-station test bench is equipped with a positioning structure adapted to the product under test to prevent the product under test from shifting during the test.

8. The pre-pressure testing device according to claim 1, characterized in that, The power-on testing mechanism also includes an eccentric cam and a slider assembly. The motor shaft of the second servo motor is installed inside the center of the eccentric cam. During operation, the eccentric cam drives the slider assembly and the test probe to move in the up-down direction under the drive of the second servo motor, so as to realize that the test probe contacts the product under test and energizes it, and provides real-time feedback of the power-off signal of the product under test.

9. The pre-pressure testing device according to claim 1, characterized in that, It also includes a display screen for displaying pressure values ​​and allowing for one-click switching of test parameters based on the type of product being tested.

Images