Thermistor testing device convenient for clamping plurality of thermistors

Abstract

The utility model discloses a thermistor testing device convenient for clamping a plurality of thermistors, which comprises a cabinet, a PLC (programmable logic controller) is mounted on the outer side wall of the cabinet, and telescopic cylinders are fixed on two sides of the cabinet. When the device is in operation, a thermistor product on the test main body is firstly subjected to resistance test in a low-temperature environment in the low-temperature test cavity, test results are sent and summarized to the PLC controller, and then the PLC controller starts the two telescopic cylinders to drive the heat insulation breaking plate to lift; the electric push rod is started to push the test main body to slide into the high-temperature test cavity along the guide slide rail, then the two telescopic cylinders drive the heat insulation breaking plate to descend to partition and block the joint of the low-temperature test cavity and the high-temperature test cavity, the product is subjected to resistance test in a high-temperature environment in the high-temperature test cavity, and after the low-temperature test and the high-temperature test are completed, the test time is shortened. Therefore, the device can automatically switch high and low temperature test environments, and the continuous and efficient test function can be realized.

Description

Technical Field

[0001] This utility model relates to the technical field of thermistor testing devices, specifically a thermistor testing device that is convenient for multiple clamps. Background Technology

[0002] A thermistor is an electronic component whose resistance changes significantly with temperature. It is mainly used for temperature detection and control. During the production and processing of thermistors, testing equipment is often required to test the change of the thermistor's resistance at different temperatures.

[0003] As disclosed in application number 202122207518.0, the resistance value testing device for thermistor production has two sets of connecting plates on its upper surface, with a baffle plate slidably installed between the two sets of connecting plates. Handles are symmetrically arranged on the upper surface of the baffle plate. A door is provided on the front surface of the resistance tester, and a second fixing plate is symmetrically arranged on the front surface of the resistance tester. A first fixing plate is symmetrically arranged on one side of the second fixing plate on the front surface of the door. Slide plates connected to the baffle plate via connectors slide in grooves opened on the inner side of the connecting plates, thereby allowing for... When not in use, a shield is used to cover the upper surface of the resistance tester to prevent dust from falling in and affecting subsequent tests. Handles are symmetrically arranged on the upper surface of the shield for easy carrying and use. However, it still has limitations in batch testing of thermistors of different specifications and continuous testing in low and high temperature environments, affecting testing efficiency. Therefore, we propose a novel, convenient, multi-clamp thermistor testing device that can efficiently handle batch testing of different thermistors. Utility Model Content

[0004] The purpose of this invention is to provide a convenient multiple-clamp thermistor testing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A convenient multi-clamp thermistor testing device, comprising a cabinet, a PLC controller mounted on the outer wall of the cabinet, telescopic cylinders fixed on both sides of the cabinet, the output end of the telescopic cylinders connected to a heat-insulating partition plate matching the cabinet, a low-temperature testing chamber and a high-temperature testing chamber respectively arranged inside the cabinet at both ends of the heat-insulating partition plate, a refrigeration housing fixed on the cabinet at one end of the low-temperature testing chamber, an evaporator, a condenser and a compressor sequentially installed inside the refrigeration housing, and a heating housing fixed on the cabinet at one end of the high-temperature testing chamber. The interior of the casing is lined with heating wires. Temperature sensors are installed inside both the cooling and heating casings. Guide rails are evenly embedded at the bottom of the low-temperature and high-temperature test chambers. A drive plate is slidably connected to the top of the guide rails. Electric push rods matching the drive plate are evenly fixed to the inner wall of the low-temperature test chamber. A test body is installed on the top of the drive plate. Individual units are evenly spaced and snapped onto the top of the test body. A resistance tester body is installed on the individual units by screws. Current clamps are connected to both ends of the resistance tester body by wires. A storage battery is installed inside the test body.

[0006] Preferably, a sealing cover matching the low-temperature test chamber is movably connected to one side of the cabinet.

[0007] Preferably, both sides of the heat-insulating partition plate are provided with reserved inserts for interlocking with the cabinet.

[0008] Preferably, the outer walls of the cabinet, the cooling housing, and the heating housing are all provided with a high-temperature resistant rubber insulation layer.

[0009] Preferably, the bottom of the test body is uniformly provided with fixing posts that engage with the drive plate.

[0010] Preferably, one side of the drive plate is uniformly provided with positioning push blocks that match the output end of the electric push rod.

[0011] Preferably, there are two telescopic cylinders, and adjacent telescopic cylinders are symmetrically distributed about the vertical center line of the heat insulation partition plate.

[0012] Preferably, an opening matching the heat insulation partition is provided at the middle position of the top of the cabinet.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This convenient multi-clamp thermistor testing device optimizes its performance by installing a condenser, etc. On the one hand, a cooling housing and a low-temperature testing chamber are set at one end of the cabinet. The temperature sensor, evaporator, condenser and compressor installed inside the cooling housing absorb the refrigerant through the evaporator and then send the compressed refrigerant into the condenser. The condenser sends the liquefied refrigerant into the evaporator through capillary tubes to evaporate and absorb heat to achieve the purpose of cooling. After the refrigerant in the evaporator reaches a certain energy, it will enter the compressor to liquefy and release heat. Furthermore, with the temperature monitoring function of the corresponding temperature sensor, the low temperature state of the test environment inside the low temperature test chamber can be intelligently controlled. On the other hand, by setting up a heating housing and a high temperature test chamber at the other end of the cabinet, the high temperature state of the test environment inside the high temperature test chamber can be intelligently controlled by the heating wire and temperature sensor inside the heating housing. In addition, by integrating two separable, independent and temperature-controllable cooling and heating structures into the device, it is beneficial to meet the resistance change state of the thermistor under different low temperature and high temperature environments, improve the thermistor testing efficiency and expand the testing range.

[0015] (2) This convenient multi-clamp thermistor testing device optimizes its structure by installing individual unit seats, etc. After the test body and PLC controller are wirelessly connected, it is installed in the cabinet. Subsequently, the thermistor products installed on each individual unit seat on the test body will first be tested in the low temperature environment in the low temperature test chamber. After the test results are sent to the PLC controller, the PLC controller will start two telescopic cylinders to lift the heat insulation partition plate and start the electric push rod to push the test body to slide along the guide rail into the high temperature test chamber. Then, the two telescopic cylinders will drive the heat insulation partition plate to descend to the connection between the low temperature test chamber and the high temperature test chamber. The product will be tested in the high temperature environment in the high temperature test chamber. After the low and high temperature tests are completed, the device can automatically switch between high and low temperature test environments, which is conducive to realizing continuous and efficient testing functions.

[0016] (3) This convenient multiple clamping thermistor testing device is equipped with current clamps, etc., so that when the device is actually operated, the user can use the two current clamps on each resistance tester body to clamp the two terminals of the thermistor product. This is convenient for dealing with different specifications of thermistor testing. In addition, by evenly clamping the individual seats at equal intervals on the top of the test body, and installing the resistance tester body on the individual seats with screws, batch clamping and testing of multiple resistance products can be realized. The resistance tester body can calculate and measure the resistance change by the current flowing through the thermistor product. Attached Figure Description

[0017] Figure 1This is a front view structural diagram of the present invention;

[0018] Figure 2 This is a top view of a partial cross-sectional structure of the present invention;

[0019] Figure 3 This is a side view sectional structural diagram of the heating housing of this utility model;

[0020] Figure 4 This is a side view sectional structural diagram of the refrigeration housing of this utility model;

[0021] Figure 5 This is a front view structural diagram of the test subject of this utility model.

[0022] In the diagram: 1. Sealing cover; 2. Test body; 3. Drive board; 4. Cabinet; 5. Heating housing; 6. PLC controller; 7. Telescopic cylinder; 8. Thermal insulation partition plate; 9. Low temperature test chamber; 10. Individual unit seat; 11. Electric push rod; 12. Positioning push block; 13. Reserved insert strip; 14. Guide slide rail; 15. High temperature test chamber; 16. Refrigeration housing; 17. Heating wire; 18. Temperature sensor; 19. Evaporator; 20. Condenser; 21. Compressor; 22. Resistance tester body; 23. Current clamp; 24. Battery; 25. Fixing pin. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figure 1-5 An embodiment of this utility model is provided: a thermistor testing device that is convenient for multiple clamping, including a cabinet 4, a PLC controller 6 installed on the outer wall of the cabinet 4, telescopic cylinders 7 fixed on both sides of the cabinet 4, and a heat insulation partition plate 8 that matches the cabinet 4 connected to the output end of the telescopic cylinder 7.

[0025] The cabinets 4 at both ends of the heat insulation partition plate 8 are respectively equipped with a low temperature test chamber 9 and a high temperature test chamber 15. A refrigeration housing 16 is fixed on the cabinet 4 at one end of the low temperature test chamber 9. An evaporator 19, a condenser 20 and a compressor 21 are installed inside the refrigeration housing 16 in sequence.

[0026] A heating housing 5 is fixed on the cabinet 4 at one end of the high temperature test chamber 15. The heating housing 5 is filled with heating wires 17. Temperature sensors 18 are installed inside both the cooling housing 16 and the heating housing 5.

[0027] In use, a refrigeration housing 16 and a low-temperature testing chamber 9 are installed at one end of the cabinet 4. The refrigeration housing 16 contains a temperature sensor 18, an evaporator 19, a condenser 20, and a compressor 21. The evaporator 19 absorbs refrigerant and then sends the compressed refrigerant to the condenser 20. The condenser 20 then sends the liquefied refrigerant to the evaporator 19 through capillary tubes for evaporation and heat absorption to achieve refrigeration. Once the refrigerant in the evaporator 19 reaches a certain energy level, it enters the compressor 21 for liquefaction and heat release. Furthermore, a corresponding temperature sensor... The temperature monitoring function of 18 can intelligently regulate the low temperature state of the test environment inside the low temperature test chamber 9. On the other hand, by setting a heating housing 5 and a high temperature test chamber 15 at the other end of the cabinet 4, the heating wire 17 and temperature sensor 18 inside the heating housing 5 can intelligently regulate the high temperature state of the test environment inside the high temperature test chamber 15. Furthermore, by integrating two separable, independent and temperature-controllable cooling and heating structures into the device, it is beneficial to meet the resistance change state of the thermistor under different low temperature and high temperature environments, improve the thermistor testing efficiency and expand the testing range.

[0028] The bottom of the low temperature test chamber 9 and the high temperature test chamber 15 are uniformly embedded with guide rails 14, and the top of the guide rails 14 is slidably connected to the drive plate 3. The inner sidewall of the low temperature test chamber 9 is uniformly fixed with electric push rods 11 that match the drive plate 3.

[0029] The test body 2 is mounted on the top of the drive board 3, and the test body 2 is evenly snapped with individual unit seats 10 arranged at equal intervals on the top of the test body 2.

[0030] In use, after the test body 2 and PLC controller 6 are wirelessly connected, they are installed inside the cabinet 4. Subsequently, the thermistors installed on each individual unit 10 on the test body 2 will first undergo resistance testing in a low-temperature environment inside the low-temperature test chamber 9. After the test results are sent and summarized to the PLC controller 6, the PLC controller 6 will then activate two telescopic cylinders 7 to lift the heat insulation partition plate 8 and activate the electric push rod 11 to push the test body 2 to slide along the guide rail 14 into the high-temperature test chamber 15. Then, the two telescopic cylinders 7 will drive the heat insulation partition plate 8 to descend to block the connection between the low-temperature test chamber 9 and the high-temperature test chamber 15. The products will then undergo resistance testing in a high-temperature environment inside the high-temperature test chamber 15. After completing the low and high temperature tests, this allows the device to automatically switch between high and low temperature test environments, which is conducive to achieving continuous and efficient testing functions.

[0031] The resistance tester body 22 is mounted on the single unit 10 by screws. Both ends of the resistance tester body 22 are connected to current clamps 23 by wires. A storage battery 24 is installed inside the test body 2.

[0032] In use, the user can use the two current clamps 23 on each resistance tester body 22 to clamp the two terminals of the thermistor product. This is convenient for dealing with the testing of thermistors of different specifications. In addition, by evenly clamping the individual unit seats 10 at equal intervals on the top of the test body 2, and mounting the resistance tester body 22 on the individual unit seats 10 with screws, batch clamping and testing of multiple resistance products can be realized. The resistance tester body 22 can calculate and measure the resistance change by the current flowing through the thermistor product.

[0033] A sealing cover 1 that matches the low-temperature test chamber 9 is movably connected to one side of the cabinet 4;

[0034] Both sides of the heat insulation partition plate 8 are provided with reserved insertion strips 13 that can be plugged into the cabinet 4;

[0035] The outer walls of the cabinet 4, the cooling housing 16 and the heating housing 5 are all provided with a high-temperature resistant rubber insulation layer.

[0036] The bottom of the test body 2 is evenly provided with fixing posts 25 that are engaged with the drive board 3;

[0037] Positioning push blocks 12 that match the output end of the electric push rod 11 are evenly arranged on one side of the drive plate 3;

[0038] Two telescopic cylinders 7 are provided, and adjacent telescopic cylinders 7 are symmetrically distributed about the vertical center line of the heat insulation partition plate 8.

[0039] An opening matching the thermal insulation partition plate 8 is provided at the middle position of the top of the cabinet 4.

[0040] In this embodiment, the user first opens the sealing cover 1, removes the test body 2 clipped onto the drive board 3, and then installs the resistor products onto the resistance tester body 22 in sequence. Next, the two current clamps 23 on each resistance tester body 22 can be used to clamp the two terminals of the thermistor product. This facilitates testing different specifications of thermistors. Furthermore, by evenly spaced individual unit seats 10 are clipped onto the top of the test body 2, and the resistance tester body 22 is mounted on the individual unit seats 10 with screws, batch clamping and testing of multiple resistor products can be achieved. The resistance tester body 22 can calculate and measure the current flowing through the thermistor product. Its resistance changes. Simultaneously, by setting a refrigeration housing 16 and a low-temperature testing chamber 9 at one end of the cabinet 4, and utilizing the temperature sensor 18, evaporator 19, condenser 20, and compressor 21 installed inside the refrigeration housing 16, the evaporator 19 absorbs refrigerant and then sends the compressed refrigerant into the condenser 20. The condenser 20 sends the liquefied refrigerant into the evaporator 19 through capillaries for evaporation and heat absorption to achieve the purpose of refrigeration. Furthermore, once the refrigerant in the evaporator 19 reaches a certain energy level, it enters the compressor 21 for liquefaction and heat release. Additionally, with the temperature monitoring function of the corresponding temperature sensor 18, the internal temperature measurement of the low-temperature testing chamber 9 can be intelligently controlled. On the one hand, the test environment is kept at a low temperature. On the other hand, a heating housing 5 and a high-temperature test chamber 15 are set at the other end of the cabinet 4. The heating wire 17 and temperature sensor 18 inside the heating housing 5 can intelligently control the high temperature of the test environment inside the high-temperature test chamber 15. Furthermore, by integrating two separable, independent and temperature-controllable cooling and heating structures into the device, it is beneficial to meet the resistance change state of the thermistor under different low temperature and high temperature environments, improve the thermistor testing efficiency and expand the testing range. Secondly, after the test body 2 and PLC controller 6 are wirelessly connected, they are installed inside the cabinet 4. Subsequently, the heating elements are installed on each individual unit seat 10 on the test body 2. The resistor product first undergoes a low-temperature resistance test inside the low-temperature test chamber 9. After the test results are sent and summarized to the PLC controller 6, the PLC controller 6 then activates two telescopic cylinders 7 to lift the heat insulation partition plate 8 and activates the electric push rod 11 to push the test body 2 along the guide rail 14 to the inside of the high-temperature test chamber 15. Then, the two telescopic cylinders 7 lower the heat insulation partition plate 8 to the junction of the low-temperature test chamber 9 and the high-temperature test chamber 15. The product then undergoes a high-temperature resistance test inside the high-temperature test chamber 15. After completing the low-temperature and high-temperature tests, the device can automatically switch between high and low temperature test environments, which is conducive to achieving continuous and efficient testing functions.

Claims

1. A device for facilitating testing of a plurality of clamped thermistors, comprising: The system includes a cabinet (4), on which a PLC controller (6) is installed on the outer wall. Telescopic cylinders (7) are fixed on both sides of the cabinet (4). The output end of the telescopic cylinders (7) is connected to a heat insulation partition plate (8) that matches the cabinet (4). Low-temperature test chamber (9) and high-temperature test chamber (15) are respectively provided inside the cabinet (4) at both ends of the heat insulation partition plate (8). A refrigeration housing (16) is fixed on the cabinet (4) at one end of the low-temperature test chamber (9). An evaporator (19), a condenser (20), and a compressor (21) are installed in sequence inside the refrigeration housing (16). A heating housing (5) is fixed on the cabinet (4) at one end of the high-temperature test chamber (15). Heating wires (17) are laid inside the heating housing (5). Temperature sensors (18) are installed inside the shell (16) and the heating shell (5). Guide rails (14) are evenly embedded at the bottom of the low temperature test chamber (9) and the high temperature test chamber (15). A drive plate (3) is slidably connected to the top of the guide rails (14). Electric push rods (11) matching the drive plate (3) are evenly fixed on the inner side wall of the low temperature test chamber (9). A test body (2) is installed on the top of the drive plate (3). Individual seats (10) are evenly snapped onto the top of the test body (2). A resistance tester body (22) is installed on the individual seat (10) by screws. Current clamps (23) are connected to both ends of the resistance tester body (22) by wires. A storage battery (24) is installed inside the test body (2).

2. The thermistor testing device of claim 1, wherein: The cabinet (4) is movably connected to a sealing cover (1) that matches the low-temperature test chamber (9).

3. The thermistor testing device for convenient multiple clamping as described in claim 1, characterized in that: Both sides of the heat insulation partition plate (8) are provided with reserved inserts (13) that can be plugged into the cabinet (4).

4. The thermistor testing device for convenient multiple clamping as described in claim 1, characterized in that: The outer walls of the cabinet (4), the cooling housing (16) and the heating housing (5) are all provided with a high-temperature resistant rubber insulation layer.

5. The thermistor testing device for convenient multiple clamping as described in claim 1, characterized in that: The bottom of the test body (2) is uniformly provided with fixing posts (25) that are engaged with the drive plate (3).

6. The thermistor testing device for convenient multiple clamping as described in claim 1, characterized in that: The drive plate (3) is uniformly provided with positioning push blocks (12) that match the output end of the electric push rod (11) on one side.

7. The thermistor testing device for convenient multiple clamping as described in claim 1, characterized in that: Two telescopic cylinders (7) are provided, and adjacent telescopic cylinders (7) are symmetrically distributed about the vertical center line of the heat insulation partition plate (8).

8. The thermistor testing device for convenient multiple clamping as described in claim 1, characterized in that: The top of the cabinet (4) is provided with an opening that matches the heat insulation partition (8).

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