Multipath circulating compatible testing device

Abstract

The utility model discloses a multipath circulation compatible testing device, and relates to the pressure sensitive element testing technology field, the multipath circulation compatible testing device comprises a base plate and a cylinder, the middle part of one side of the upper surface of the base plate is fixedly provided with a mounting seat, and the upper surface of the base plate is slidingly provided with a movable plate on one side far away from the mounting seat; the two air cylinders are fixedly arranged at the two ends of the side, close to the movable plate, of the mounting base, piston rod faces of the two air cylinders are connected with a first common contact and a second common contact respectively, a testing machine is arranged on one side of the bottom plate, and the testing machine is electrically connected with two output lines. According to the utility model, most products with pins can be tested, a set of jig does not need to be replaced when one kind of product is replaced, and multiple groups of products can be installed at one time, so that the labor time is greatly reduced and the efficiency is improved when the products are tested.

Description

Technical Field

[0001] This utility model relates to the field of pressure-sensitive element testing technology, specifically to a multi-loop compatible testing device. Background Technology

[0002] Varistors (MOVs) are important circuit protection components. There are many types of MOVs on the market, the most common being circular varistors with pins. These have two 1mm diameter pins and are typically used for voltage testing, leakage current testing, current carrying capacity testing, and residual voltage testing. The conventional method for testing MOVs is to use a single fixture. After testing one MOV, it is removed from the fixture and the next MOV is installed. This method is relatively slow and requires a tester to be on-site continuously, repeatedly performing disassembly and reassembly. Constantly stopping and changing products takes a significant amount of time, is inefficient, and poses a safety risk if the power is forgotten when changing products. Another method on the market is to manufacture multiple fixtures, each with... The setup is fixed, with each device having two leads connected to a common point on the testing equipment. However, this approach has several drawbacks. First, it results in numerous leads that can interfere with each other. Second, with multiple setups, the lengths of the leads to the common point are inconsistent, leading to significant data errors during residual voltage testing. (The residual voltage probe has two output lines; the closer these lines are to the two pins of the product, the more accurate the residual voltage test data. The length of the connecting line between the product pins and the probe's output line directly affects the residual voltage data. The longer the connecting line, the larger the residual voltage value will be, because the lines have resistance and inductance. The probe's output line can only be connected to the common point to meet the requirements of multi-product residual voltage testing.) Therefore, with multiple setups, the wiring becomes cluttered and the residual voltage test becomes inaccurate. Utility Model Content

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

[0004] Therefore, the purpose of this invention is to provide a multi-loop compatible testing device that solves the problems mentioned in the background art.

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

[0006] A multi-loop compatible testing device includes a base plate and cylinders. A mounting base is fixedly mounted on the middle of one side of the upper surface of the base plate. A movable plate is slidably mounted on the upper surface of the base plate on the side away from the mounting base. Two cylinders are fixedly mounted at both ends of the mounting base near the movable plate. The piston rods of the two cylinders are respectively connected to a first common contact and a second common contact. A testing machine is mounted on one side of the base plate. The testing machine is electrically connected to two output lines, which are respectively electrically connected to the first common contact and the second common contact. Multiple mounting blocks are arranged sequentially from left to right on the upper surface of the movable plate. High-voltage probes are mounted on both sides of the interior of each mounting block. A slot is opened on the upper surface of the mounting block on the side of the high-voltage probe. A product under test is placed above the slot. Two pins of the product under test are respectively inserted into the corresponding slots and abut against the corresponding high-voltage probes. A mounting plate is fixedly mounted on the lower side of the base plate. A high-speed module for moving the movable plate is arranged on the front side of the mounting plate.

[0007] Preferably, the high-speed module includes a lead screw slide rail and a slider. The lead screw slide rail is fixedly disposed on the front side of the mounting plate, and the slider is slidably sleeved on the front side of the lead screw slide rail. The slider is threadedly connected to the lead screw in the lead screw slide rail. A motor is fixedly disposed on the front side of the mounting plate and on one side of the lead screw slide rail. The output end of the motor is fixedly connected to the input end of the lead screw slide rail. A strip-shaped opening is provided in the middle of the movable plate, and the upper side of the slider passes through the strip-shaped opening and is fixedly connected to the movable plate.

[0008] Preferably, a stop bar is fixedly installed on the upper surface of the base plate on the side of the movable plate away from the mounting seat, and the stop bar abuts against the side wall of the movable plate.

[0009] Preferably, the upper surface of the base plate has multiple mounting holes.

[0010] Preferably, a manual quick-release shaft clamp assembly for restricting the movement of the mounting blocks is provided on the upper surface of the movable plate at a position corresponding to the plurality of mounting blocks.

[0011] Preferably, the high-voltage probe is internally electrically connected to an oscilloscope cable.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0013] This invention is compatible with most two-pin output products on the market, including leaded discharge tubes. It allows for the rapid installation of multiple products at once, with automatic cyclic testing. The probe's acquisition line is very close to the pins of the tested product, ensuring accurate residual voltage values. This invention can meet the testing needs of most leaded products with greater accuracy. Attached Figure Description

[0014] 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.

[0015] Figure 1 This is a schematic diagram of the structure of a multi-loop compatible testing device proposed in this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the front view structure.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Base plate; 2. Mounting base; 3. First common contact; 4. Second common contact; 5. Movable plate; 6. Product under test; 7. Manual quick shaft clamp assembly; 8. High-pressure probe; 9. Testing machine; 10. Stop bar; 11. Mounting hole; 12. Slider; 13. Lead screw slide rail; 14. Motor; 15. Mounting plate; 16. Cylinder; 17. Output line; 18. Mounting block. Detailed Implementation

[0019] 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.

[0020] This utility model discloses a multi-loop compatible testing device.

[0021] Reference Figure 1-2A multi-loop compatible testing device includes a base plate 1 and cylinders 16. A mounting base 2 is fixedly installed at the center of one side of the upper surface of the base plate 1. Multiple mounting holes 11 are provided on the upper surface of the base plate 1 for easy installation and fixation. A movable plate 5 is slidably installed on the upper surface of the base plate 1, on the side away from the mounting base 2. Two cylinders 16 are fixedly installed at both ends of the mounting base 2 near the movable plate 5. The piston rods of the two cylinders 16 are respectively connected to a first common contact 3 and a second common contact 4. A testing machine 9 is installed on one side of the base plate 1. The testing machine 9 is electrically connected to two output lines 17, which are respectively electrically connected to the first common contact 3 and the second common contact 4. The upper surface of the movable plate 5, from left to right... Multiple mounting blocks 18 are arranged sequentially on the right. High voltage probes 8 are installed on both sides of the interior of the multiple mounting blocks 18. A slot is opened on the upper surface of the mounting block 18 and on one side of the high voltage probe 8. The product under test 6 is placed above the slot. The two pins of the product under test 6 are respectively inserted into the corresponding slot and abut against the corresponding high voltage probe 8. The high voltage probe 8 is electrically connected to an oscilloscope connection cable for easy connection to an oscilloscope. A manual quick shaft clamp assembly 7 is set on the upper surface of the movable plate 5 and at the position corresponding to the multiple mounting blocks 18 to restrict the movement of the mounting blocks 18, so as to maintain the stability of the test operation. A mounting plate 15 is fixedly installed on the lower side of the base plate 1. A high-speed module that drives the movable plate 5 to move is set on the front side of the mounting plate 15.

[0022] Reference Figure 1-2 The high-speed module includes a lead screw slide rail 13 and a slider 12. The lead screw slide rail 13 is fixedly installed on the front side of the mounting plate 15, and the slider 12 is slidably sleeved on the front side of the lead screw slide rail 13. The slider 12 is threadedly connected to the lead screw in the lead screw slide rail 13. A motor 14 is fixedly installed on the front side of the mounting plate 15 and on one side of the lead screw slide rail 13. The output end of the motor 14 is fixedly connected to the input end of the lead screw slide rail 13. A strip-shaped opening is opened in the middle of the movable plate 5, and the upper side of the slider 12 passes through the strip-shaped opening and is fixedly connected to the movable plate 5.

[0023] Reference Figure 1-2 A stop bar 10 is fixedly installed on the upper surface of the base plate 1 and on the side of the movable plate 5 away from the mounting base 2. The stop bar 10 abuts against the side wall of the movable plate 5, so that the movable plate 5 can slide stably.

[0024] In this utility model, during use, the product under test 6 with pins is mounted on the mounting block 18 on the movable plate 5 using the manual quick shaft clamp assembly 7. The pins of the product under test 6 are inserted into the slots of the mounting block 18 and abut against the high voltage probes 8 on both sides inside the mounting block 18 to ensure a tight connection. At the same time, the two output lines 17 of the test machine 9 are electrically connected to the first common contact 3 and the second common contact 4 on the mounting base 2, respectively. The oscilloscope connection line inside the high voltage probe 8 is connected to the oscilloscope to complete the electrical connection preparation work.

[0025] The testing machine 9 starts working, outputting the electrical signals required for testing. These signals are transmitted via output line 17 to the first common contact 3 and the second common contact 4. The two lines LN output by the testing machine 9 transmit the test signals to the common point L3-N3 of the test fixture (the first common contact 3 and the second common contact 4 correspond to common point L3-N3). The cylinder 16 actuates, its piston rod extending so that the copper electrode corresponding to each group of cylinders touches the copper electrode of the multi-channel fixture, achieving circuit continuity. At this time, the test signal is transmitted to the product under test 6 via common point L3-N3, performing voltage testing, leakage current testing, current flow testing, and other related tests. During residual voltage testing, the high-voltage probe 8 plays a crucial role. The two acquisition lines L1-N1 output by the high-voltage probe 8 are connected to the common point L3-N3 of the fixture. Because the acquisition lines are far from the product under test... The pins of product 6 are very close together, effectively reducing the influence of the resistance and inductance of the connecting wires and ensuring the accuracy of the residual voltage test data. The collected test data is transmitted to the oscilloscope through another input line of the high-voltage probe 8 so that the operator can observe and analyze it. In order to realize multi-channel cyclic testing, the high-speed module on the front side of the mounting plate 15 starts to work. The motor 14 in the high-speed module starts and drives the lead screw in the lead screw slide rail 13 to rotate. Because the slider 12 is threadedly connected to the lead screw, and the upper side of the slider 12 passes through the strip in the middle of the movable plate 5 and is fixedly connected to the movable plate 5, when the lead screw rotates, the slider 12 will slide along the lead screw slide rail 13, thereby driving the movable plate 5 to move. The movement of the movable plate 5 causes the products under test 6 in different positions to move to the test position in sequence, realizing automatic cyclic testing of multiple products and improving testing efficiency.

[0026] 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. A multi-loop compatible testing device, comprising a base plate (1) and a cylinder (16), characterized in that: A mounting base (2) is fixedly installed in the middle of one side of the upper surface of the base plate (1). A movable plate (5) is slidably installed on the upper surface of the base plate (1) on the side away from the mounting base (2). Two cylinders (16) are fixedly installed at both ends of the mounting base (2) near the movable plate (5). The piston rods of the two cylinders (16) are respectively connected to a first common contact (3) and a second common contact (4). A testing machine (9) is installed on one side of the base plate (1). The testing machine (9) is electrically connected to two output lines (17). The two output lines (17) are respectively connected to the first common contact (3) and the second common contact (4). Point (4) is electrically connected. Multiple mounting blocks (18) are arranged sequentially from left to right on the upper surface of the movable plate (5). High voltage probes (8) are installed on both sides of the interior of the multiple mounting blocks (18). A slot is opened on the upper surface of the mounting block (18) and on one side of the high voltage probe (8). The product to be tested (6) is arranged above the slot. The two pins of the product to be tested (6) are respectively inserted into the corresponding slot and abut against the corresponding high voltage probe (8). A mounting plate (15) is fixedly arranged on the lower side of the base plate (1). A high-speed module that drives the movable plate (5) to move is arranged on the front side of the mounting plate (15).

2. The multi-loop compatibility testing device according to claim 1, characterized in that: The high-speed module includes a lead screw slide rail (13) and a slider (12). The lead screw slide rail (13) is fixedly installed on the front side of the mounting plate (15). The slider (12) is slidably sleeved on the front side of the lead screw slide rail (13). The slider (12) is threadedly connected to the lead screw in the lead screw slide rail (13). A motor (14) is fixedly installed on the front side of the mounting plate (15) and on one side of the lead screw slide rail (13). The output end of the motor (14) is fixedly connected to the input end of the lead screw slide rail (13). A strip-shaped opening is provided in the middle of the movable plate (5). The upper side of the slider (12) passes through the strip-shaped opening and is fixedly connected to the movable plate (5).

3. The multi-loop compatibility testing device according to claim 1, characterized in that: A baffle (10) is fixedly installed on the upper surface of the base plate (1) and on the side of the movable plate (5) away from the mounting base (2), and the baffle (10) abuts against the side wall of the movable plate (5).

4. The multi-loop compatibility testing device according to claim 1, characterized in that: The upper surface of the base plate (1) is provided with a plurality of mounting holes (11).

5. The multi-loop compatibility testing device according to claim 1, characterized in that: A manual quick shaft clamp assembly (7) is provided on the upper surface of the movable plate (5) at a position corresponding to the plurality of mounting blocks (18) to restrict the movement of the mounting blocks (18).

6. The multi-loop compatibility testing device according to claim 1, characterized in that: The high-voltage probe (8) is internally electrically connected to an oscilloscope cable.

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