A detection device for a small thermal protector

Abstract

The utility model discloses a detection device for small -size thermal protector belongs to thermal protector performance detection technical field, and its technical scheme main points include frame, the top fixedly connected with support frame of frame, the top of frame is provided with thermal protector main part, the bottom of support frame is provided with clamping component, can solve the detection device for small -size thermal protector of current usually adopts the clamping of fixed size's clamp, lacks the clamping structure of flexible adjustable, and it is inconvenient to adjust the clamping range according to different model, size's thermal protector, thereby leading to the compatibility of device to a variety of specifications product is poor, and the batch detection efficiency of different model thermal protector is affected, and the sorting operation after detection is usually relied on manual to complete, and it is inconvenient according to the test result realizes the classification of qualified product and unqualified product fast, thereby leading to the problem of low sorting efficiency, and the detection progress of mass production is affected.

Description

Technical Field

[0001] This utility model relates to the field of thermal protector performance testing technology, and in particular to a testing device for small thermal protectors. Background Technology

[0002] As a key component for ensuring the safe operation of electrical equipment, the performance parameters of miniature thermal protectors, such as their operating temperature, reset temperature, overcurrent protection threshold, and contact reliability, directly determine the protection effect. Therefore, they must undergo rigorous testing before production and delivery.

[0003] As a temperature-sensitive device, thermal protectors typically require testing before leaving the factory to ensure they are qualified and usable. Currently, testing is generally done manually using resistance testing instruments. However, this method cannot simulate the heating of the equipment to observe whether the thermal protector functions. Furthermore, given the large production volume of thermal protectors, manual testing is time-consuming and leads to worker fatigue, resulting in low efficiency and reduced accuracy. This hinders efficient, rapid, and accurate testing. When using a thermal protector, it is fixed to the equipment. During use, external impacts may occur, creating external pressure on the protector. If this pressure is not met, the protector may be damaged, requiring replacement and increasing production costs and economic losses.

[0004] The existing patent (publication number: CN221056517U) discloses a device for testing thermal protectors. Through the cooperation of a mounting frame, heating rod, feed inlet, heat-resistant conveyor belt, discharge inlet, air supply plate, mounting shell, air inlet slot, and fan, the testing device is equipped with functions that facilitate automatic testing, eliminating the need for manual testing of each device individually. This reduces testing time, improves work efficiency, reduces the workload of staff, and improves the accuracy of test results. It facilitates efficient, fast, and accurate testing of thermal protectors. Through the cooperation of a slide, slider, hydraulic cylinder, pressure plate, pressure sensor, and force plate, the testing device is equipped with functions that facilitate testing the thermal protector's resistance to external pressure. This allows qualified thermal protectors to resist external pressure to a certain extent, making them less prone to damage and reducing production costs and economic losses.

[0005] To address the aforementioned issues, existing patents offer solutions. However, current testing devices for small thermal protectors typically use fixed-size clamps for holding the devices, lacking a flexible and adjustable clamping structure. This makes it difficult to adjust the clamping range according to different models and sizes of thermal protectors, resulting in poor compatibility with various product specifications. This affects the efficiency of batch testing of different models of thermal protectors. Furthermore, the sorting operation after testing usually relies on manual labor, making it difficult to quickly classify qualified and unqualified products based on the test results. This leads to low sorting efficiency and affects the testing progress of mass production.

[0006] Therefore, a detection device for small thermal protectors is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a testing device for small thermal protectors. This device addresses the problems of existing testing devices for small thermal protectors that typically use fixed-size clamps, lacking a flexible and adjustable clamping structure. This makes it difficult to adjust the clamping range according to different models and sizes of thermal protectors, resulting in poor compatibility with various product specifications and affecting the batch testing efficiency of different models of thermal protectors. Furthermore, the device usually relies on manual sorting after testing, which makes it difficult to quickly classify qualified and unqualified products based on the test results, leading to low sorting efficiency and affecting the testing progress of mass production.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a detection device for a small thermal protector, comprising a frame, a support frame fixedly connected to the top of the frame, a thermal protector body disposed on the top of the frame, a clamping assembly disposed at the bottom of the support frame, and a sorting assembly disposed at the bottom of the frame. The clamping assembly includes a lifting cylinder fixedly connected to the top of the support frame, an adjusting frame fixedly connected to the telescopic end of the lifting cylinder, a dual-axis motor fixedly connected inside the adjusting frame, adjusting screws fixedly connected to both sides of the dual-axis motor, a connecting frame threadedly connected to the outer side of the adjusting screws, the connecting frame slidingly connected to the adjusting frame, and a clamping plate fixedly connected to the bottom of the connecting frame.

[0009] Preferably, the sorting assembly includes a support base plate rotatably connected inside the frame, and the bottom of the support base plate is provided with an inclined guide rail.

[0010] Preferably, a drive motor is fixedly connected to the top of the inclined guide rail, and a transmission shaft is installed at the output end of the drive motor via a rotating shaft and a transmission belt. The transmission shaft is fixedly connected to the support base plate.

[0011] Preferably, a collection and sorting box is slidably connected to the left side of the inclined guide rail, and a waste sorting box is slidably connected to the right side of the inclined guide rail.

[0012] Preferably, a fixing plate is fixedly connected to the bottom of the frame, a servo motor is fixedly connected to the outer side of the fixing plate, a transmission screw is fixedly connected to the output end of the servo motor, and the transmission screw is rotatably connected to the fixing plate.

[0013] Preferably, a connecting block is threaded to the outer side of the transmission screw, a conveying support is fixedly connected to the top of the connecting block, a drive electric cylinder is fixedly connected to the outer side of the conveying support, and a push plate is fixedly connected to the output end of the drive electric cylinder.

[0014] Preferably, a limiting groove is provided on the top of the frame, and the limiting groove is slidably connected to the connecting block.

[0015] Preferably, a test power supply is fixedly connected to the top of the frame, a heating cylinder is provided on the outside of the test power supply, and a test head is provided on the outside of the heating cylinder.

[0016] Preferably, a protective shell is fixedly connected to the outside of the test power supply, and the protective shell is located outside the heating cylinder.

[0017] Preferably, both the collection and sorting box and the waste sorting box are fixedly connected to a movable handle rod on their outer sides.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This application achieves stable clamping of different models of small thermal protectors through the clamping component, improving clamping stability and equipment versatility during the testing process. Compared with traditional thermal protector testing devices, it can realize the functions of flexibly adjusting the clamping size by driving the adjusting screw with a dual-axis motor to drive the clamping plate and precisely controlling the clamping height with a lifting cylinder. This solves the problems of poor compatibility, easy loosening during clamping affecting the testing accuracy, and frequent clamping adjustment required when changing models in traditional devices due to fixed clamping size.

[0020] 2. This application achieves automatic and accurate sorting based on the detection results through the sorting component, thereby improving sorting efficiency and accuracy. Compared with the traditional thermal protector detection device, it can realize the function of driving the support base plate to tilt through the drive motor and guiding the products to different sorting boxes in conjunction with the tilting guide rail. This solves the problems of low efficiency, easy human error, and mixed storage of unqualified and qualified products caused by the reliance on manual sorting in traditional devices. Attached Figure Description

[0021] Figure 1 This is an overall structural diagram of a detection device for a small thermal protector according to the present invention;

[0022] Figure 2 This is a schematic diagram of the frame structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the clamping assembly of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the sorting component of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the fixing plate of this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the conveyor support of this utility model;

[0027] Figure 7 This is a schematic diagram of the test power supply of this utility model.

[0028] In the diagram, 1. Frame; 2. Support frame; 3. Thermal protector body; 4. Clamping assembly; 401. Lifting cylinder; 402. Adjusting frame; 403. Dual-axis motor; 404. Adjusting screw; 405. Connecting frame; 406. Clamping plate; 5. Sorting assembly; 501. Support base plate; 502. Inclined guide rail; 503. Drive motor; 504. Transmission shaft; 505. Collection and sorting box; 506. Waste sorting box; 6. Fixing plate; 7. Servo motor; 8. Transmission screw; 9. Connecting block; 10. Conveying support; 11. Drive cylinder; 12. Push plate; 13. Limiting slide; 14. Test power supply; 15. Heating cylinder; 16. Test head; 17. Protective shell; 18. Moving grip lever. 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 protection scope of the present utility model.

[0030] Please see Figure 1-7 The present invention provides the following technical solution:

[0031] A testing device for a small thermal protector includes a frame 1, a support frame 2 fixedly connected to the top of the frame 1, a thermal protector body 3 disposed on the top of the frame 1, a clamping assembly 4 disposed at the bottom of the support frame 2, and a sorting assembly 5 disposed at the bottom of the frame 1. The clamping assembly 4 includes a lifting cylinder 401 fixedly connected to the top of the support frame 2, an adjusting frame 402 fixedly connected to the telescopic end of the lifting cylinder 401, a dual-axis motor 403 fixedly connected inside the adjusting frame 402, adjusting screws 404 fixedly connected to both sides of the dual-axis motor 403, a connecting frame 405 threadedly connected to the outer side of the adjusting screws 404, the connecting frame 405 being slidably connected to the adjusting frame 402, and a clamping plate 406 fixedly connected to the bottom of the connecting frame 405.

[0032] In this embodiment: after the thermal protector body 3 is pushed to the detection point by the push plate 12, the lifting cylinder 401 at the top of the support frame 2 extends and retracts, driving the adjusting frame 402 to move downward, so that the bottom clamping plate 406 approaches the thermal protector body 3. Subsequently, the dual-axis motor 403 inside the adjusting frame 402 starts, driving the adjusting screws 404 on both sides to rotate. The connecting frame 405, which is threaded to the adjusting screws 404, slides along the adjusting frame 402, driving the bottom clamping plate 406 to move closer to each other, stably clamping the thermal protector body 3, avoiding the impact of shaking on the accuracy of parameters during the detection process. After the detection is completed, the dual-axis motor 403 rotates in the opposite direction, the adjusting screws 404 drive the connecting frame 405 and the clamping plate 406 to reset and release, and the lifting cylinder 401 drives the adjusting frame 402 to move upward, completing the clamping operation.

[0033] Specifically, such as Figure 4 As shown, the sorting assembly 5 includes a support base plate 501 rotatably connected inside the frame 1, and an inclined guide rail 502 is provided at the bottom of the support base plate 501.

[0034] Specifically, such as Figure 4 As shown, a drive motor 503 is fixedly connected to the top of the inclined guide rail 502. The output end of the drive motor 503 is equipped with a transmission shaft 504 through a rotating shaft and a transmission belt. The transmission shaft 504 is fixedly connected to the support base plate 501.

[0035] Specifically, such as Figure 4 As shown, a collection and sorting box 505 is slidably connected to the left side of the inclined guide rail 502, and a waste sorting box 506 is slidably connected to the right side of the inclined guide rail 502.

[0036] In this embodiment: After the test is completed, the thermal protector body 3 rests on the support base plate 501. If the test is qualified, the drive motor 503 at the top of the inclined guide rail 502 starts, and its output end drives the transmission shaft 504 to rotate through the rotating shaft and transmission belt. The transmission shaft 504 drives the support base plate 501 to tilt to the left, and the thermal protector body 3 slides along the support base plate 501 into the bottom inclined guide rail 502, and then slides along the inclined guide rail 502 into the left collection and sorting box 505. If it is unqualified, the drive motor 503 drives the transmission shaft 504 to rotate in the opposite direction, and the support base plate 501 tilts to the right. The thermal protector body 3 slides along the inclined guide rail 502 into the right waste sorting box 506. The collection and sorting box 505 and the waste sorting box 506 can slide along the inclined guide rail 502. The movable grip lever 18 on the outside makes it convenient for the operator to take out or replace them, realizing the automatic classification of qualified and unqualified products.

[0037] Specifically, such as Figure 5 , Figure 6 As shown, a fixed plate 6 is fixedly connected to the bottom of the frame 1, a servo motor 7 is fixedly connected to the outside of the fixed plate 6, and a transmission screw 8 is fixedly connected to the output end of the servo motor 7. The transmission screw 8 is rotatably connected to the fixed plate 6.

[0038] Specifically, such as Figure 5 , Figure 6 As shown, a connecting block 9 is threadedly connected to the outer side of the transmission screw 8, a conveying support 10 is fixedly connected to the top of the connecting block 9, a drive electric cylinder 11 is fixedly connected to the outer side of the conveying support 10, and a push plate 12 is fixedly connected to the output end of the drive electric cylinder 11.

[0039] In this embodiment: By setting a fixed plate 6, a servo motor 7, and a transmission screw 8, when the thermal protector body 3 needs to be transported, the servo motor 7 on the outside of the fixed plate 6 is started, and its output end drives the transmission screw 8 to rotate around the fixed plate 6. The rotation of the screw transmits power to the subsequent components, providing a stable driving force for the positional transport of the thermal protector body 3 and ensuring the orderly progress of the transport process. By setting a connecting block 9, a transport support 10, a drive cylinder 11, and a push plate 12, when the transmission screw 8 rotates, the connecting block 9 with its outer threaded connection moves linearly with the rotation of the screw, thereby driving the top transport support 10 to move synchronously, realizing the horizontal transport of the thermal protector body 3. When the transport support 10 delivers the thermal protector body 3 to the vicinity of the detection position, the drive cylinder 11 on the outside of the transport support 10 is started, and its output end pushes the push plate 12, accurately pushing the thermal protector body 3 onto the support base plate 501 of the detection point, completing the transition from transport to the detection position, and ensuring that the thermal protector body 3 is accurately aligned with the detection component.

[0040] Specifically, such as Figure 2 As shown, a limiting groove 13 is provided on the top of the frame 1, and the limiting groove 13 is slidably connected to the connecting block 9.

[0041] Specifically, such as Figure 7 As shown, a test power supply 14 is fixedly connected to the top of the frame 1, a heating cylinder 15 is arranged on the outside of the test power supply 14, and a test head 16 is arranged on the outside of the heating cylinder 15.

[0042] In this embodiment: By setting a limiting slide groove 13, during the movement of the connecting block 9 with the transmission screw 8, the limiting slide groove 13 on the top of the frame 1 slides and engages with the connecting block 9, constraining the movement trajectory of the connecting block 9, preventing the connecting block 9 from shifting laterally or rotating during movement, ensuring that the conveying support 10 always moves smoothly along the preset path, thereby ensuring the accuracy of the conveying position of the thermal protector body 3. By setting a test power supply 14, a heating cylinder 15, and a test head 16, after the thermal protector body 3 is fixed by the clamping assembly 4, the test power supply 14 on the top of the frame 1 starts to work, providing power support for the testing process. The heating cylinder 15 outside the test power supply 14 generates heat according to the testing requirements, simulating different temperature environments. The heat is transferred to the thermal protector body 3 through the test head 16 outside the heating cylinder 15. At the same time, the test power supply 14, in conjunction with the test head 16, detects the operating temperature, reset temperature, and other performance parameters of the thermal protector, realizing accurate testing of the core performance of the thermal protector.

[0043] Specifically, such as Figure 7 As shown, a protective shell 17 is fixedly connected to the outside of the test power supply 14, and the protective shell 17 is located outside the heating cylinder 15.

[0044] Specifically, such as Figure 2 As shown, movable grip rods 18 are fixedly connected to the outside of both the collection sorting box 505 and the waste sorting box 506.

[0045] In this embodiment: By setting a protective shell 17, when the test power supply 14 performs performance testing on the thermal protector body 3 through the heating cylinder 15 and the test head 16, the protective shell 17 covers the heating cylinder 15. On the one hand, it can prevent the high temperature of the heating cylinder 15 from being directly exposed, avoiding accidental contact with the operator and causing burns. On the other hand, it can reduce the interference of external airflow, dust and other environmental factors on the temperature stability of the heating cylinder 15, ensuring the accuracy of the temperature transferred from the heating cylinder 15 to the thermal protector body 3, and ensuring the accuracy of detection parameters such as action temperature and reset temperature. By setting a movable grip lever 18, when the qualified thermal protector body 3 in the collection and sorting box 505 or the unqualified thermal protector body 3 in the waste sorting box 506 accumulate to a certain amount, the operator can hold the movable grip lever 18 on the outside of the collection and sorting box 505 and the waste sorting box 506, and easily slide the sorting box along the inclined guide rail 502 to remove it from the device to empty the internal products.

[0046] Working principle: In the process of using the detection device of this small thermal protector, the thermal protector body 3 is first placed on the top of the conveyor support 10. Then, the servo motor 7 is started to drive the transmission screw 8 to rotate, and the connecting block 9 slides along the limit slide groove 13, thereby driving the conveyor support 10 to move. After the conveyor support 10 conveys the thermal protector body 3 to the detection position, the drive cylinder 11 pushes the push plate 12 to push the thermal protector body 3 onto the designated detection point support base plate 501. At this time, the lifting cylinder 401 on the support frame 2 extends and retracts, causing the adjusting frame 402 to move down. The dual-axis motor 403 in the adjusting frame 402 is started, driving the adjusting screws 404 on both sides to rotate. The connecting frame 405, which is threaded to the adjusting screws 404, slides along the adjusting frame 402, thereby driving the clamping plates 406 at the bottom to move closer to each other and stably clamp the thermal protector body 3. Subsequently, the test power supply 14 passes through the heating cylinder 15. The thermal protector body 3 is tested by the test head 16. The protective shell 17 protects the heating cylinder 15 and the test head 16. After the test is completed, the clamping plate 406 is released by the dual-axis motor 403 and the adjusting screw 404. If the thermal protector body 3 is qualified, the drive motor 503 starts and drives the transmission shaft 504 to rotate through the rotating shaft and the transmission belt. The transmission shaft 504 drives the support base plate 501 to tilt to the left. The thermal protector body 3 slides into the collection and sorting box 505 on the left along the inclined guide rail 502. If it is not qualified, the support base plate 501 tilts to the right and the thermal protector body 3 slides into the waste sorting box 506 on the right along the inclined guide rail 502. The movable gripping rod 18 on the outside of the collection and sorting box 505 and the waste sorting box 506 facilitates the operation of the operator to pick up and put down. In the whole process, the components work together to complete the conveying, clamping, testing and sorting operation of the thermal protector body 3.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A testing device for a small thermal protector, comprising a frame (1), characterized in that: A support frame (2) is fixedly connected to the top of the frame (1). A thermal protector body (3) is provided on the top of the frame (1). A clamping assembly (4) is provided at the bottom of the support frame (2). A sorting assembly (5) is provided at the bottom of the frame (1). The clamping assembly (4) includes a lifting cylinder (401) fixedly connected to the top of the support frame (2). An adjusting frame (402) is fixedly connected to the telescopic end of the lifting cylinder (401). A dual-axis motor (403) is fixedly connected inside the adjusting frame (402). Adjusting screws (404) are fixedly connected to both sides of the dual-axis motor (403). A connecting frame (405) is threadedly connected to the outer side of the adjusting screw (404). The connecting frame (405) is slidably connected to the adjusting frame (402). A clamping plate (406) is fixedly connected to the bottom of the connecting frame (405).

2. The detection device for a small thermal protector according to claim 1, characterized in that: The sorting assembly (5) includes a support base plate (501) rotatably connected inside the frame (1), and the bottom of the support base plate (501) is provided with an inclined guide rail (502).

3. The detection device for a small thermal protector according to claim 2, characterized in that: A drive motor (503) is fixedly connected to the top of the inclined guide rail (502). The output end of the drive motor (503) is equipped with a transmission shaft (504) through a rotating shaft and a transmission belt. The transmission shaft (504) is fixedly connected to the support base plate (501).

4. A detection device for a small thermal protector according to claim 2, characterized in that: A collection and sorting box (505) is slidably connected to the left side of the inclined guide rail (502), and a waste sorting box (506) is slidably connected to the right side of the inclined guide rail (502).

5. A detection device for a small thermal protector according to claim 1, characterized in that: A fixed plate (6) is fixedly connected to the bottom of the frame (1), and a servo motor (7) is fixedly connected to the outside of the fixed plate (6). A transmission screw (8) is fixedly connected to the output end of the servo motor (7), and the transmission screw (8) is rotatably connected to the fixed plate (6).

6. A detection device for a small thermal protector according to claim 5, characterized in that: The transmission screw (8) is threaded to the outer side with a connecting block (9), the top of the connecting block (9) is fixedly connected with a conveying support (10), the outer side of the conveying support (10) is fixedly connected with a drive electric cylinder (11), and the output end of the drive electric cylinder (11) is fixedly connected with a push plate (12).

7. A detection device for a small thermal protector according to claim 6, characterized in that: The top of the frame (1) is provided with a limiting slide groove (13), which is slidably connected to the connecting block (9).

8. A detection device for a small thermal protector according to claim 1, characterized in that: A test power supply (14) is fixedly connected to the top of the frame (1), a heating cylinder (15) is provided on the outside of the test power supply (14), and a test head (16) is provided on the outside of the heating cylinder (15).

9. A detection device for a small thermal protector according to claim 8, characterized in that: A protective shell (17) is fixedly connected to the outside of the test power supply (14), and the protective shell (17) is located outside the heating cylinder (15).

10. A detection device for a small thermal protector according to claim 4, characterized in that: The outer sides of both the collection and sorting box (505) and the waste sorting box (506) are fixedly connected with movable grip rods (18).

Images