Intelligent calibration device and method for multi-channel micro thermal protector

Abstract

This invention relates to the field of miniature thermal protector manufacturing technology, specifically disclosing an intelligent calibration device and method for a multi-channel miniature thermal protector. The device includes a calibration mechanism comprising a transfer component and a calibration component. An auxiliary component is provided on the side wall of the transfer component. The transfer component transfers the miniature thermal protector, conveyed by a vibrating conveyor plate, to the calibration component. The calibration component, in conjunction with the auxiliary component, calibrates the miniature thermal protector. This invention, by applying thermal grease at multiple points after the first contact plate is pressed against the miniature thermal protector, can effectively transfer the heat generated by the first electric heating coil to the miniature thermal protector, further reducing the probability of heat loss affecting the calibration accuracy of the miniature thermal protector. It also avoids the traditional method of first applying thermal grease and then pressing down on the miniature thermal protector, which causes excessive overflow of thermal grease outside the miniature thermal protector, thus facilitating actual calibration and use.

Description

Technical Field

[0001] This invention relates to the field of miniature thermal protector manufacturing technology, specifically to an intelligent calibration device and method for a multi-channel miniature thermal protector. Background Technology

[0002] The main production process of miniature thermal protectors includes structural composition preparation, component assembly, preliminary testing and pre-calibration, high-temperature aging treatment, precise calibration, reset performance verification, final inspection and sorting, and labeling and traceability management.

[0003] The preliminary testing and pre-calibration aim to perform continuity tests on the assembled semi-finished product to check if the contact resistance is normal. Subsequently, a preliminary temperature response test is conducted in a temperature-controlled environment to adjust the bimetallic strip preload or position. Precise calibration aims to monitor the actual temperature when the contacts disconnect, reducing the risk of malfunctions causing shutdowns during normal operation of the miniature thermal protector, or the risk of burnout due to failure to cut off the circuit in time when overheating occurs.

[0004] Patent application CN207398033U discloses a novel multi-channel thermal protector calibration device, which achieves a more balanced and efficient combination of vibratory feeder feeding efficiency and calibration mechanism thermal protector calibration efficiency through multi-channel feeding.

[0005] Existing intelligent calibration devices for multi-channel miniature thermal protectors aim to improve the contact between the miniature thermal protector and the heating platform, preventing significant heat loss due to gaps and reduced calibration accuracy. While existing calibration equipment uses thermal grease between the thermal protector and heating platform to reduce the impact of gaps on accuracy, the traditional method of applying grease before pressing down on the thermal protector leads to excessive grease overflow, hindering practical calibration. Referring to the aforementioned applications, these methods only improve calibration efficiency through multi-channel detection, not accuracy, thus having limitations. To address these issues, an intelligent calibration device and method for multi-channel miniature thermal protectors are proposed. Summary of the Invention

[0006] To achieve the above objectives, the present invention provides the following technical solution: an intelligent calibration device for a multi-channel miniature thermal protector, comprising a production platform, and further comprising calibration mechanisms disposed on the top of the production platform and symmetrically arranged with respect to the center point of the production platform, the calibration mechanisms comprising:

[0007] A vibratory conveyor, fixedly mounted on the top of the production table, is used to transport assembled miniature thermal protectors. A transfer assembly and a calibration assembly are located on the top of the production table. An auxiliary assembly is located on the side wall of the transfer assembly. The transfer assembly transfers the miniature thermal protectors conveyed by the vibratory conveyor to the calibration assembly, and the calibration assembly, in conjunction with the auxiliary assembly, calibrates the miniature thermal protectors. The calibration assembly includes:

[0008] A rotating disk is mounted on top of the production table. A ring-shaped array of heating elements is arranged on the top of the rotating disk. The heating elements include:

[0009] The first housing is fixedly mounted on the top of the rotating disk. The top of the first housing is designed to be open. The inner wall of the top of the first housing is fixedly provided with mounting rods arranged in a ring array. The top of the mounting rods is fixedly provided with a first mounting shell. The first mounting shell is eccentrically positioned relative to the first housing.

[0010] Furthermore, the heating assembly also includes:

[0011] The first fixing seat is fixedly disposed on the inner side wall of the first mounting shell, and the first electric heating coil is fixedly disposed on the top of the first fixing seat;

[0012] The first contact plate is fixedly disposed on the top of the first mounting shell, and the top of the first contact plate is in contact with the first electric heating coil.

[0013] Furthermore, the heating assembly also includes:

[0014] The first conduit is fixedly disposed at the bottom of the first mounting shell. The outer wall of the first conduit is fixedly provided with a second conduit arranged in a ring array. The tops of both the first and second conduits extend into the first contact plate. The top of the first contact plate is provided with a first through hole for fitting the first and second conduits.

[0015] Furthermore, the heating assembly also includes:

[0016] An annular groove is formed on the top of the first contact plate. A semi-annular plate is fixedly provided on the top of the first contact plate. The inner sidewall of the semi-annular plate is aligned vertically with the outer sidewall of the inner wall of the annular groove.

[0017] The third conduit is fixed at the bottom of the first mounting shell and extends into the annular groove. The bottom inner wall of the annular groove is provided with a second through hole for fitting the third conduit. A valve body is provided on the outer wall of the first conduit at the top of the horizontal section of the second conduit, the outer wall of the second conduit, and the outer wall of the third conduit.

[0018] Furthermore, the calibration component also includes:

[0019] Rotary joints are fixed inside the production table. There are two rotary joints, which are arranged vertically aligned. One end of the two rotary joints is connected to the first conduit and the third conduit, respectively, and the other end of the two rotary joints is provided with the fourth conduit and the fifth conduit, respectively.

[0020] Furthermore, the calibration component also includes:

[0021] The base is fixedly installed on the top of the production table. The top of the base has an annular groove, and an annular slider is placed inside the annular groove. A toothed disc is fixedly installed on the top of the annular slider. The toothed disc has an annular design, and the top of the toothed disc is fixedly connected to the bottom of the rotating disk.

[0022] The servo motor is fixed inside the production table. The output shaft of the servo motor is fixed to the top of the production table via a coupling. A gear is fixedly sleeved on the side wall of the top end of the shaft, and the gear meshes with the gear plate.

[0023] Furthermore, the transfer component includes:

[0024] The first rod is fixedly installed on the top of the production table. A bent rod is fixedly installed on the top of the first rod. An electric turntable is fixedly installed on the top of the bent rod. A connecting plate is fixedly installed on the bottom rotating end of the electric turntable.

[0025] The first electric push rod is fixedly mounted on the top of the connecting plate and located on both sides of the bent rod. The telescopic shafts of the two first electric push rods extend to the bottom of the connecting plate. Vacuum suction cups are fixedly mounted at the bottom of the telescopic shafts of the first electric push rods. Space is left between the vertical section of the bent rod and the first rod body for the connecting plate to rotate.

[0026] Furthermore, the auxiliary components include:

[0027] The second rod is fixedly mounted on the side wall of the first rod. A connecting plate is fixedly mounted at the bottom of the second rod, and a ring-shaped array of pressing components is fixedly mounted at the top of the connecting plate. The pressing components and the heating components are designed to be vertically aligned. The pressing components include:

[0028] The second electric push rod is fixedly mounted on the top of the connecting plate. The telescopic shaft of the second electric push rod extends to the bottom of the connecting plate. The bottom of the telescopic shaft of the second electric push rod is fixedly mounted with a first spline shaft. The bottom of the first spline shaft is fixedly mounted with a connecting seat. The top of the connecting seat is provided with a first groove. The bottom inner wall of the first groove is provided with a second groove. The inner wall diameter of the second groove is larger than the inner wall diameter of the first groove.

[0029] Furthermore, the pressing component also includes:

[0030] A first electromagnet is fixedly disposed on the top inner wall of the second groove. The second electromagnet is sleeved on the inner side wall of the second groove. A second spline shaft is fixedly disposed on the bottom of the second electromagnet. The side wall of the second spline shaft is adapted to the inner side wall of the first groove to restrict the rotation of the second spline shaft. A pressure sensor is fixedly disposed on the bottom inner wall of the second groove. The pressure sensor is sleeved on the side wall of the second spline shaft. A first spring is sleeved on the side wall of the second spline shaft located between the second electromagnet and the pressure sensor.

[0031] The second mounting shell is fixedly installed at the bottom of the second spline shaft. The bottom of the second mounting shell is designed to be open. The inner side wall of the second mounting shell is fixedly fitted with a second fixing seat. The bottom of the second fixing seat is fixedly fitted with a second electric heating coil. The bottom of the second mounting shell is fixedly fitted with a second contact plate. The bottom of the second contact plate is fixedly fitted with a heat-conducting plate. The top of the second contact plate is in contact with the second electric heating coil.

[0032] The second housing is fitted onto the side wall of the first spline shaft and has an open bottom. A retaining ring is fixedly provided at the bottom of the second electric push rod and outside the output shaft of the second electric push rod. A second spring is fitted onto the side wall of the first spline shaft and is located between the retaining ring and the second housing.

[0033] This invention also provides a method for using an intelligent calibration device for a multi-channel miniature thermal protector. The method, employing the aforementioned intelligent calibration device for a multi-channel miniature thermal protector, includes the following steps:

[0034] S1: The assembled miniature thermal protector enters the vibratory conveyor plate and is transported through multiple channels via multiple vibratory conveyor plates. During the transport process, the miniature thermal protector is transferred to the heating component by the transfer component.

[0035] S2: After the miniature thermal protector is transferred into the heating assembly, it is calibrated by the calibration assembly and auxiliary assembly. The miniature thermal protector is calibrated after assembly to complete the production of the miniature thermal protector.

[0036] This invention provides an intelligent calibration device and method for a multi-channel miniature thermal protector. Compared with the prior art, it has the following advantages:

[0037] 1. This invention, by filling multiple points with thermal grease after the first contact plate is pressed against the miniature thermal protector, can fully transfer the heat generated by the first electric heating coil to the miniature thermal protector, further reducing the probability of heat loss affecting the calibration accuracy of the miniature thermal protector, and avoiding the traditional method of first applying thermal grease and then pressing down on the miniature thermal protector, which causes the thermal grease to overflow to too many places outside the miniature thermal protector, thus facilitating actual calibration and use.

[0038] 2. The present invention uses the third and fifth conduits to connect external pipes, thereby draining excess thermal grease from the top of the first contact plate, preventing excess thermal grease from flowing around and affecting actual calibration.

[0039] By gradually moving the miniature thermal protector from the inner top of the semi-ring plate to the outer side, the thermal grease adhering to the bottom of the miniature thermal protector is scraped off, thus avoiding affecting the subsequent packaging and use of the miniature thermal protector and facilitating subsequent production.

[0040] 3. The present invention controls the force of the second mounting shell and the heat-conducting plate pressing down on the miniature thermal protector by the repulsive force between the first electromagnet and the second electromagnet. This can compress the space between the first electromagnet and the second electromagnet, which reduces the probability of damage to the miniature thermal protector during the pressing process compared to using the second electric push rod to drive the heat-conducting plate to press down on the miniature thermal protector.

[0041] 4. The present invention encases the miniature thermal protector inside the first and second housings, reducing the impact of external airflow on the heating of the miniature thermal protector, thereby avoiding a reduction in the accuracy of the miniature thermal protector calibration.

[0042] By allowing heating from both sides of the miniature thermal protector, it is easier to heat the miniature thermal protector sequentially from both sides when it is moved from the top of the rotating disk to different work positions. This allows for the determination of the temperature difference when the miniature thermal protector automatically disconnects when heated separately from both sides, thereby further improving the calibration effect of the miniature thermal protector.

[0043] 5. This invention transfers the miniature thermal protectors in the vibrating conveyor plate one by one to the heating assembly at the top of the rotating plate, thereby avoiding the need for the miniature thermal protectors to remain in the channel of the vibrating conveyor plate for a certain period of time to ensure that the heating platform transfers the specified temperature to the miniature thermal protectors. This avoids the impact of the miniature thermal protectors' retention on calibration efficiency, thereby improving the actual production efficiency of the miniature thermal protectors. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0045] Figure 2 This is a schematic diagram of the overall rear structure of the present invention;

[0046] Figure 3 This is a schematic diagram of the calibration mechanism structure of the present invention;

[0047] Figure 4 This is a schematic diagram of the transfer component and auxiliary component structure of the present invention;

[0048] Figure 5 This is a schematic diagram of the transfer component structure of the present invention;

[0049] Figure 6 This is a schematic diagram of the auxiliary component structure of the present invention;

[0050] Figure 7 This is a schematic diagram of the downward pressure component structure of the present invention;

[0051] Figure 8 This is a longitudinal sectional view of the second housing, connecting seat, and second mounting housing of the present invention.

[0052] Figure 9 This is a schematic diagram of the exploded structure of the pressing component of the present invention;

[0053] Figure 10 This is a schematic diagram of the calibration component structure of the present invention;

[0054] Figure 11 This is a schematic diagram of the longitudinal cross-sectional structure of the base of the present invention;

[0055] Figure 12 This is a schematic diagram of the heating assembly, rotary joint, fourth conduit, and fifth conduit of the present invention;

[0056] Figure 13 This is a longitudinal sectional view of the first housing of the present invention;

[0057] Figure 14 This is a longitudinal cross-sectional view of the first mounting shell, the first fixing base, and the first contact plate of the present invention.

[0058] The reference numerals in the above figures are: 1. Production station; 2. Calibration mechanism;

[0059] 21. Vibrating conveyor; 22. Transfer assembly; 23. Auxiliary assembly; 24. Calibration assembly;

[0060] 221. Bent rod; 222. Electric turntable; 223. Connecting plate; 224. Vacuum suction cup; 225. First electric push rod; 226. First rod body;

[0061] 231. Second rod; 232. Connecting plate; 233. Pressing assembly;

[0062] 2331. Second electric push rod; 2332. Retaining ring; 2333. Second housing; 2334. First splined shaft; 2335. Second mounting housing; 2336. Connecting seat; 2337. First electromagnet; 2338. Second fixed seat; 2339. Second electromagnet; 3391. Second splined shaft; 3392. Pressure sensor; 3393. Second electric heating coil; 3394. Second contact plate; 3395. Heat conducting plate;

[0063] 241. Base; 242. Gear disc; 243. Heating component; 244. Rotating disc; 245. Gear; 246. Servo motor; 247. Rotary joint; 248. Fifth conduit; 249. Fourth conduit;

[0064] 2431, First housing; 2432, Third conduit; 2433, First conduit; 2434, Semi-annular plate; 2435, Annular groove; 2436, First contact plate; 2437, First mounting shell; 2438, Mounting rod; 2439, First fixing seat; 4391, Second conduit; 4392, First electric heating coil. Detailed Implementation

[0065] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0066] Example 1, please refer to Figure 1-3 and Figure 13 A smart calibration device for a multi-channel miniature thermal protector includes a production platform 1 and a calibration mechanism 2 disposed on top of the production platform 1 and symmetrically arranged with respect to the center point of the production platform 1. The calibration mechanism 2 includes:

[0067] A vibrating conveyor 21 is fixedly mounted on the top of the production table 1 for conveying assembled miniature thermal protectors. A transfer assembly 22 and a calibration assembly 24 are mounted on the top of the production table 1. An auxiliary assembly 23 is mounted on the side wall of the transfer assembly 22. The transfer assembly 22 transfers the miniature thermal protectors conveyed by the vibrating conveyor 21 to the calibration assembly 24, and the calibration assembly 24, in cooperation with the auxiliary assembly 23, calibrates the miniature thermal protectors. The calibration assembly 24 includes:

[0068] A rotating disk 244 is rotatably mounted on top of the production table 1. A ring-shaped array of heating components 243 is arranged on the top of the rotating disk 244. The heating components 243 include:

[0069] The first housing 2431 is fixedly mounted on the top of the rotating disk 244. The top of the first housing 2431 is designed to be open. The inner wall of the top of the first housing 2431 is fixedly provided with mounting rods 2438 arranged in a ring array. The top of the mounting rods 2438 is fixedly provided with a first mounting shell 2437. The first mounting shell 2437 is eccentrically positioned relative to the first housing 2431.

[0070] In implementation, the assembled miniature thermal protectors are transported to the vibrating conveyor plate 21 via an external conveying device. The miniature thermal protectors are then transported one by one along the channel of the vibrating conveyor plate 21. During transport, one of the second electric push rods 2331 drives the vacuum suction cup 224 downwards, bringing it into contact with the top of the miniature thermal protector within the channel of the vibrating conveyor plate 21, thus adsorbing and fixing the miniature thermal protector. After the miniature thermal protector is adsorbed and fixed, the vacuum suction cup 224 is reset under the control of the first electric push rod 225. Subsequently, the connecting plate 223 is rotated by the electric turntable 222, transferring the miniature thermal protector to the top of the heating assembly 243. Subsequently, the telescopic axes of the two first electric push rods 225 are moved downwards simultaneously, thereby driving the vacuum suction cups 224 at their bottoms to move downwards. The vacuum suction cups 224 with the micro thermal protector attached place the micro thermal protector on top of the first contact plate 2436, while the vacuum suction cups 224 without the micro thermal protector attached attach and fix the micro thermal protector in the channel of the vibrating conveyor plate 21. After the miniature thermal protector is placed on top of the first contact plate 2436, the servo motor 246 drives the turntable to rotate, thereby driving the heating component 243 to rotate, so that the miniature thermal protector is transferred to the next station. During this process, the other vacuum suction cup 224 that adsorbs the miniature thermal protector rotates to the top of the new heating component 243. This cycle is repeated to transfer the miniature thermal protectors in the vibrating conveyor 21 one by one to the heating component 243 on top of the rotating disk 244. This avoids the traditional method of setting up a heating platform in the channel of the vibrating conveyor 21 to calibrate and test the miniature thermal protector. This would cause the miniature thermal protector to stay in the channel of the vibrating conveyor 21 for a certain period of time to ensure that the heating platform transfers the specified temperature to the miniature thermal protector. As a result, the calibration efficiency is affected due to the retention of the miniature thermal protector, which in turn affects the actual production efficiency of the miniature thermal protector.

[0071] When the heating assembly 243 containing the miniature thermal protector rotates to the bottom of the pressing assembly 233, the second electric push rod 2331 drives the second housing 2333 and the second electric heating coil 3393 to move downwards, thereby covering the miniature thermal protector that needs to be calibrated inside the first housing 2431 and the second housing 2333. The first electric heating coil 4392 and the second electric heating coil 3393 transfer heat to the miniature thermal protector, thereby calibrating the miniature thermal protector to determine whether it will automatically disconnect at a specified temperature, and judging its stability after actual use. After calibration, it is packaged and packaged, thus completing the production of the miniature thermal protector.

[0072] By setting up multiple heating components 243 and pressing components 233, the micro thermal protector can be calibrated multiple times when the rotating disk 244 drives the micro thermal protector to rotate, thereby determining the situation where the micro thermal protector disconnects a second time after disconnecting once and automatically resetting, thus improving the calibration effect.

[0073] The specific number of heating components 243 and pressing components 233 can be designed by those skilled in the art according to actual production conditions, and is not limited here.

[0074] Please see Figures 10-14 The heating assembly 243 also includes:

[0075] The first fixing seat 2439 is fixedly disposed on the inner side wall of the first mounting shell 2437, and the first electric heating coil 4392 is fixedly disposed on the top of the first fixing seat 2439;

[0076] The first contact plate 2436 is fixedly disposed on the top of the first mounting shell 2437, and the top of the first contact plate 2436 is in contact with the first electric heating coil 4392.

[0077] Heating component 243 also includes:

[0078] The first conduit 2433 is fixedly disposed at the bottom of the first mounting shell 2437. The outer wall of the first conduit 2433 is fixedly provided with a second conduit 4391 arranged in a ring array. The tops of the first conduit 2433 and the second conduit 4391 both extend into the first contact plate 2436. The top of the first contact plate 2436 is provided with a first through hole for fitting the first conduit 2433 and the second conduit 4391.

[0079] Heating component 243 also includes:

[0080] An annular groove 2435 is formed on the top of the first contact plate 2436. A semi-annular plate 2434 is fixedly provided on the top of the first contact plate 2436. The inner sidewall of the semi-annular plate 2434 is aligned vertically with the outer sidewall of the inner wall of the annular groove 2435.

[0081] The third conduit 2432 is fixedly disposed at the bottom of the first mounting shell 2437 and extends into the annular groove 2435. The bottom inner wall of the annular groove 2435 is provided with a second through hole for fitting the third conduit 2432. The outer wall of the first conduit 2433 located at the top of the horizontal section of the second conduit 4391, the outer wall of the second conduit 4391, and the outer wall of the third conduit 2432 are all provided with valve bodies.

[0082] Calibration component 24 also includes:

[0083] Rotary joint 247 is fixedly installed inside the production table 1. There are two rotary joints 247, which are arranged vertically aligned. One end of the two rotary joints 247 is connected to the first conduit 2433 and the third conduit 2432 respectively. The other end of the two rotary joints 247 is provided with the fourth conduit 249 and the fifth conduit 248 respectively.

[0084] In practical implementation, when the miniature thermal protector is placed on the first contact plate 2436 and heated, the pressing component 233 presses the miniature thermal protector downwards, making it adhere tightly to the first contact plate 2436. This facilitates the transfer of heat from the first electric heating coil 4392 to the miniature thermal protector, reducing the probability of heat loss affecting the calibration accuracy of the miniature thermal protector. After the miniature thermal protector is adhered tightly to the first contact plate 2436, a thermal grease pipe is connected to the fourth conduit 249, which then delivers the thermal grease along the fourth conduit 249 to the first conduit 2433, and then to the second conduit 4391. This delivers the grease to multiple locations on the top of the first contact plate 2436 to fill the gap between the miniature thermal protector and the first contact plate 2436, thus ensuring that the heat generated by the first electric heating coil 4392 is fully transferred to the miniature thermal protector, further reducing the probability of heat loss affecting the calibration accuracy of the miniature thermal protector. By applying thermal grease to multiple points after the first contact plate 2436 is pressed against the miniature thermal protector, the traditional method of first applying thermal grease and then pressing down on the miniature thermal protector causes excessive thermal grease overflow outside the miniature thermal protector, thus facilitating actual calibration and use.

[0085] When thermal grease is filled multiple times, the flow direction of the thermal grease is not easily defined, causing some thermal grease to flow along the surface of the first contact plate 2436 into the annular groove 2435. At this time, the excess thermal grease is discharged from the top of the first contact plate 2436 through the external pipes of the third conduit 2432 and the fifth conduit 248, so as to avoid the excess thermal grease flowing around and affecting the actual calibration.

[0086] When the miniature thermal protector is removed from the heating assembly 243 after calibration, it is adsorbed and fixed from the top of the miniature thermal protector by an external robotic arm and a vacuum suction cup 224. After adsorption and fixation, the external robotic arm drives the miniature thermal protector to move gradually from the inner top of the semi-ring plate 2434 to the outer side of the semi-ring plate 2434, thereby scraping off the thermal grease adhering to the bottom of the miniature thermal protector to avoid affecting the subsequent packaging and use of the miniature thermal protector and to facilitate subsequent production. The scraped thermal grease flows along the inner wall of the semi-ring body into the annular groove 2435.

[0087] The mounting rod 2438 creates a gap between the bottom of the first mounting shell 2437 and the bottom inner wall diameter of the first shell 2431, thus providing installation space for the fourth conduit 249 and the fifth conduit 248. By setting the first mounting shell 2437 off-center relative to the first shell 2431, the robotic arm and the micro thermal protector have room to move when the external robotic arm drives the micro thermal protector to scrape the thermal grease from its bottom.

[0088] The rotary joint 247 facilitates the rotation of the first conduit 2433 and the third conduit 2432 relative to the fourth conduit 249 and the fifth conduit 248, so that the fourth conduit 249 and the fifth conduit 248 can deliver stably when the first conduit 2433 and the third conduit 2432 rotate with the rotating disk 244.

[0089] Please see Figure 10 and Figure 11 The calibration component 24 also includes:

[0090] The base 241 is fixedly installed on the top of the production table 1. The top of the base 241 is provided with an annular groove. An annular slider is placed inside the annular groove. A toothed disc 242 is fixedly installed on the top of the annular slider. The toothed disc 242 is designed in an annular shape. The top of the toothed disc 242 is fixedly connected to the bottom of the rotating disk 244.

[0091] Servo motor 246 is fixedly installed inside production table 1. The output shaft of servo motor 246 is fixedly connected to a rotating shaft extending to the top of production table 1 via a coupling. A gear 245 is fixedly sleeved on the side wall of the rotating shaft at the top of production table 1. The gear 245 meshes with the gear plate 242.

[0092] When it is necessary to rotate the rotating disk 244, the servo motor 246 drives the gear 245 to rotate, the gear 245 drives the gear disk 242 to rotate, and the gear disk 242 drives the rotating disk 244 to rotate under the limit of the first slide groove and the first slider.

[0093] Please see Figure 4 and Figure 5 The transfer component 22 includes:

[0094] The first rod 226 is fixedly installed on the top of the production table 1. A bent rod 221 is fixedly installed on the top of the first rod 226. An electric turntable 222 is fixedly installed on the top of the bent rod 221. A connecting plate 223 is fixedly installed at the bottom rotating end of the electric turntable 222.

[0095] The first electric push rod 225 is fixedly mounted on the top of the connecting plate 223 and located on both sides of the bent rod 221. The telescopic shafts of the two first electric push rods 225 extend to the bottom of the connecting plate 223. Vacuum suction cups 224 are fixedly mounted at the bottom of the telescopic shafts of the first electric push rods 225. A space is left between the vertical section of the bent rod 221 and the first rod body 226 for the connecting plate 223 to rotate.

[0096] In practice, the vacuum suction cup 224 is moved vertically by the two first electric push rods 225 alternately, and the connecting plate 223 and the two first electric push rods 225 are rotated by the electric turntable 222, so as to alternately remove the miniature thermal protector from the channel of the vibrating conveyor plate 21 and place the miniature thermal protector on the top of the first contact plate 2436.

[0097] Example 2, please refer to Figures 6-9 The difference between this embodiment and Embodiment 1 lies in the fact that the auxiliary component 23 includes:

[0098] The second rod 231 is fixedly mounted on the side wall of the first rod 226. A connecting plate 232 is fixedly mounted at the bottom of the second rod 231, and a ring-shaped array of pressing components 233 is fixedly mounted at the top of the connecting plate 232. The pressing components 233 and the heating components 243 are designed to be vertically aligned. The pressing components 233 include:

[0099] The second electric push rod 2331 is fixedly mounted on the top of the connecting plate 232. The telescopic shaft of the second electric push rod 2331 extends to the bottom of the connecting plate 232. The bottom of the telescopic shaft of the second electric push rod 2331 is fixedly mounted with a first spline shaft 2334. The bottom of the first spline shaft 2334 is fixedly mounted with a connecting seat 2336. The top of the connecting seat 2336 is provided with a first groove. The bottom inner wall of the first groove is provided with a second groove. The inner wall diameter of the second groove is larger than the inner wall diameter of the first groove.

[0100] The pressure-down assembly 233 also includes:

[0101] A first electromagnet 2337 is fixedly disposed on the top inner wall of the second groove. A second electromagnet 2339 is sleeved on the inner side wall of the second groove. A second spline shaft 3391 is fixedly disposed on the bottom of the second electromagnet 2339. The side wall of the second spline shaft 3391 is adapted to the inner side wall of the first groove to restrict the rotation of the second spline shaft 3391. A pressure sensor 3392 is fixedly disposed on the bottom inner wall of the second groove. The pressure sensor 3392 is sleeved on the side wall of the second spline shaft 3391. A first spring is sleeved on the side wall of the second spline shaft 3391 located between the second electromagnet 2339 and the pressure sensor 3392.

[0102] The second mounting shell 2335 is fixedly disposed at the bottom of the second spline shaft 3391. The bottom of the second mounting shell 2335 is designed to be open. The inner side wall of the second mounting shell 2335 is fixedly fitted with a second fixing seat 2338. The bottom of the second fixing seat 2338 is fixedly fitted with a second electric heating coil 3393. The bottom of the second mounting shell 2335 is fixedly fitted with a second contact plate 3394. The bottom of the second contact plate 3394 is fixedly fitted with a heat-conducting plate 3395. The top of the second contact plate 3394 is in contact with the second electric heating coil 3393.

[0103] The second housing 2333 is sleeved on the side wall of the first spline shaft 2334 and has an open bottom. A retaining ring 2332 is fixedly provided at the bottom of the second electric push rod 2331 and outside the output shaft of the second electric push rod 2331. A second spring is sleeved on the side wall of the first spline shaft 2334 and is located between the retaining ring 2332 and the second housing 2333.

[0104] In practical implementation, the second electric push rod 2331 drives the first spline shaft 2334 downward, thereby driving the connecting seat 2336 downward. When the bottom of the heat-conducting plate 3395 contacts the top of the miniature thermal protector, it is subjected to a reverse force, causing the second spline shaft 3391 to move upward. Under the monitoring of the pressure sensor 3392, the contact status between the heat-conducting plate 3395 and the miniature thermal protector is determined. When the pressure sensor 3392 detects that the bottom of the heat-conducting plate 3395 has contacted the top of the miniature thermal protector, it stops the second electric push rod 2331 from continuing to drive the heat-conducting plate 3395 downward. Then, the first electromagnet 2337 and the second electromagnet 2339 interact... The repulsive force generated on the side closer together drives the second electromagnet 2339, the second spline shaft 3391, and the second mounting shell 2335 to move downwards, thereby driving the heat-conducting plate 3395 downwards. The repulsive force between the first electromagnet 2337 and the second electromagnet 2339 controls the force with which the second mounting shell 2335 and the heat-conducting plate 3395 press down on the miniature thermal protector. When the heat-conducting plate 3395 can no longer move downwards after pressing down on the miniature thermal protector, it is subjected to a reverse force, which can compress the space between the first electromagnet 2337 and the second electromagnet 2339. Compared with driving the heat-conducting plate 3395 to press down on the miniature thermal protector through the second electric push rod 2331, the probability of damage to the miniature thermal protector during the pressing process is reduced.

[0105] During the downward movement of the heat-conducting plate 3395, the bottom of the second housing 2333 first contacts the bottom of the inner wall of the first housing 2431. As the heat-conducting plate 3395 continues to move downward, the second housing 2333 compresses the second spring and moves downward continuously. Thus, the miniature thermal protector is encased inside the first housing 2431 and the second housing 2333, reducing the influence of external airflow on the heating of the miniature thermal protector and thus avoiding a reduction in the accuracy of the miniature thermal protector calibration.

[0106] Heating can be achieved from both sides of the miniature thermal protector via the first electric heating coil 4392 and the second electric heating coil 3393. This allows the miniature thermal protector to be heated sequentially from both sides when it is moved from the top of the rotating disk 244 to different work positions. This helps to determine the temperature difference when the miniature thermal protector automatically disconnects when heated separately from both sides, thereby further improving the calibration effect of the miniature thermal protector.

[0107] This invention also provides a method for using an intelligent calibration device for a multi-channel miniature thermal protector. The method includes the following steps:

[0108] S1: The assembled miniature thermal protector enters the vibratory conveyor plate 21 and is conveyed through multiple channels via multiple vibratory conveyor plates 21. During the conveying process, the miniature thermal protector is transferred to the heating component 243 by the transfer component 22.

[0109] S2: After the miniature thermal protector is transferred into the heating assembly 243, the miniature thermal protector is calibrated by the calibration assembly 24 and the auxiliary assembly 23. The miniature thermal protector is calibrated after assembly to complete the production of the miniature thermal protector.

[0110] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0111] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0112] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent calibration device for a multi-channel miniature thermal protector, comprising a production bench, characterized in that, It also includes a calibration mechanism located on top of the production table and arranged symmetrically with respect to the center point of the production table. The calibration mechanism includes: A vibratory conveyor, fixedly mounted on the top of the production table, is used to transport assembled miniature thermal protectors. A transfer assembly and a calibration assembly are located on the top of the production table. An auxiliary assembly is located on the side wall of the transfer assembly. The transfer assembly transfers the miniature thermal protectors conveyed by the vibratory conveyor to the calibration assembly, and the calibration assembly, in conjunction with the auxiliary assembly, calibrates the miniature thermal protectors. The calibration assembly includes: A rotating disk is mounted on top of the production table. A ring-shaped array of heating elements is arranged on the top of the rotating disk. The heating elements include: The first housing is fixedly mounted on the top of the rotating disk. The top of the first housing is designed to be open. The inner wall of the top of the first housing is fixedly provided with mounting rods arranged in a ring array. The top of the mounting rods is fixedly provided with a first mounting shell. The first mounting shell is eccentrically positioned relative to the first housing.

2. The intelligent calibration device for a multi-channel miniature thermal protector according to claim 1, characterized in that, The heating assembly also includes: The first fixing seat is fixedly disposed on the inner side wall of the first mounting shell, and the first electric heating coil is fixedly disposed on the top of the first fixing seat; The first contact plate is fixedly mounted on the top of the first mounting shell, and the top of the first contact plate is in contact with the first electric heating coil.

3. The intelligent calibration device for a multi-channel miniature thermal protector according to claim 2, characterized in that, The heating assembly also includes: The first conduit is fixedly disposed at the bottom of the first mounting shell. The outer wall of the first conduit is fixedly provided with a second conduit arranged in a ring array. The tops of both the first and second conduits extend into the first contact plate. The top of the first contact plate is provided with a first through hole for fitting the first and second conduits.

4. The intelligent calibration device for a multi-channel miniature thermal protector according to claim 3, characterized in that, The heating assembly also includes: An annular groove is formed on the top of the first contact plate. A semi-annular plate is fixedly provided on the top of the first contact plate. The inner sidewall of the semi-annular plate is aligned vertically with the outer sidewall of the inner wall of the annular groove. The third conduit is fixed at the bottom of the first mounting shell and extends into the annular groove. The bottom inner wall of the annular groove is provided with a second through hole for fitting the third conduit. A valve body is provided on the outer wall of the first conduit at the top of the horizontal section of the second conduit, the outer wall of the second conduit, and the outer wall of the third conduit.

5. The intelligent calibration device for a multi-channel miniature thermal protector according to claim 4, characterized in that, The calibration component also includes: Rotary joints are fixed inside the production table. There are two rotary joints, which are arranged vertically aligned. One end of the two rotary joints is connected to the first conduit and the third conduit, respectively, and the other end of the two rotary joints is provided with the fourth conduit and the fifth conduit, respectively.

6. The intelligent calibration device for a multi-channel miniature thermal protector according to claim 1, characterized in that, The calibration component also includes: The base is fixedly installed on the top of the production table. The top of the base has an annular groove, and an annular slider is placed inside the annular groove. A toothed disc is fixedly installed on the top of the annular slider. The toothed disc has an annular design, and the top of the toothed disc is fixedly connected to the bottom of the rotating disk. The servo motor is fixed inside the production table. The output shaft of the servo motor is fixed to the top of the production table via a coupling. A gear is fixedly sleeved on the side wall of the top end of the shaft, and the gear meshes with the gear plate.

7. The intelligent calibration device for a multi-channel miniature thermal protector according to claim 1, characterized in that, The transfer component includes: The first rod is fixedly installed on the top of the production table. A bent rod is fixedly installed on the top of the first rod. An electric turntable is fixedly installed on the top of the bent rod. A connecting plate is fixedly installed on the bottom rotating end of the electric turntable. The first electric push rod is fixedly mounted on the top of the connecting plate and located on both sides of the bent rod. The telescopic shafts of the two first electric push rods extend to the bottom of the connecting plate. Vacuum suction cups are fixedly mounted at the bottom of the telescopic shafts of the first electric push rods. Space is left between the vertical section of the bent rod and the first rod body for the connecting plate to rotate.

8. The intelligent calibration device for a multi-channel miniature thermal protector according to claim 7, characterized in that, The auxiliary components include: The second rod is fixedly mounted on the side wall of the first rod. A connecting plate is fixedly mounted at the bottom of the second rod, and a ring-shaped array of pressing components is fixedly mounted at the top of the connecting plate. The pressing components and the heating components are designed to be vertically aligned. The pressing components include: The second electric push rod is fixedly mounted on the top of the connecting plate. The telescopic shaft of the second electric push rod extends to the bottom of the connecting plate. The bottom of the telescopic shaft of the second electric push rod is fixedly mounted with a first spline shaft. The bottom of the first spline shaft is fixedly mounted with a connecting seat. The top of the connecting seat is provided with a first groove. The bottom inner wall of the first groove is provided with a second groove. The inner wall diameter of the second groove is larger than the inner wall diameter of the first groove.

9. The intelligent calibration device for a multi-channel miniature thermal protector according to claim 8, characterized in that, The pressing component also includes: A first electromagnet is fixedly disposed on the top inner wall of the second groove. The second electromagnet is sleeved on the inner side wall of the second groove. A second spline shaft is fixedly disposed on the bottom of the second electromagnet. The side wall of the second spline shaft is adapted to the inner side wall of the first groove to restrict the rotation of the second spline shaft. A pressure sensor is fixedly disposed on the bottom inner wall of the second groove. The pressure sensor is sleeved on the side wall of the second spline shaft. A first spring is sleeved on the side wall of the second spline shaft located between the second electromagnet and the pressure sensor. The second mounting shell is fixedly installed at the bottom of the second spline shaft. The bottom of the second mounting shell is designed to be open. The inner side wall of the second mounting shell is fixedly fitted with a second fixing seat. The bottom of the second fixing seat is fixedly fitted with a second electric heating coil. The bottom of the second mounting shell is fixedly fitted with a second contact plate. The bottom of the second contact plate is fixedly fitted with a heat-conducting plate. The top of the second contact plate is in contact with the second electric heating coil. The second housing is fitted onto the side wall of the first spline shaft and has an open bottom. A retaining ring is fixedly provided at the bottom of the second electric push rod and outside the output shaft of the second electric push rod. A second spring is fitted onto the side wall of the first spline shaft and is located between the retaining ring and the second housing.

10. A method of using an intelligent calibration device for a multi-channel miniature thermal protector, characterized in that, The intelligent calibration device for a multi-channel miniature thermal protector according to any one of claims 1-9 includes the following steps: S1: The assembled miniature thermal protector enters the vibratory conveyor plate and is transported through multiple channels via multiple vibratory conveyor plates. During the transport process, the miniature thermal protector is transferred to the heating component by the transfer component. S2: After the miniature thermal protector is transferred into the heating assembly, it is calibrated by the calibration assembly and auxiliary assembly. The miniature thermal protector is calibrated after assembly to complete the production of the miniature thermal protector.

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