A thermistor automatic feeding device

Abstract

The present invention relates to the technical field of thermistor production, and discloses an automatic feeding device for thermistors, including a rotatable mounting shaft; a clamping mechanism disposed on the mounting shaft for clamping and flipping the thermistors; the clamping mechanism includes a clamping frame, one side of the clamping frame is fixedly connected with a first connecting plate, and a thermistor pin adjustment clamping mechanism is arranged at the bottom of the first connecting plate. For this automatic feeding device for thermistors, the driving mechanism drives the mounting shaft and the transmission plate to rotate intermittently, and then the clamping mechanism on the transmission plate cooperates to clamp the thermistors. Subsequently, the thermistor pin adjustment clamping mechanism slowly corrects the pins of the thermistors to correct some deviated pins, and then enters the welding station, realizing continuous automatic feeding for thermistor welding, greatly improving the feeding efficiency of thermistors.

Description

Technical Field

[0001] The invention relates to the technical field of thermistor production, and in particular to an automatic feeding device for thermistors. Background Art

[0002] A thermistor is a sensor resistor whose resistance value changes with temperature. It is divided into positive temperature coefficient thermistors and negative temperature coefficient thermistors according to different temperature coefficients. The resistance value of the positive temperature coefficient thermistor increases with increasing temperature, while the resistance value of the negative temperature coefficient thermistor decreases with increasing temperature. They are both semiconductor devices, and when producing thermistors, it is often necessary to solder wires to the pins of the thermistor to facilitate subsequent use of the thermistor.

[0003] When welding existing thermistors, a vibration plate is usually used to vibrate multiple thermistors, and then the thermistors are transported to a slide rail with the pins facing downward. The telescopic rod is then used to drive the clamping cylinder to clamp the thermistors and load them onto the welding station. The welding station then clamps the pins of the thermistor and welds the wires. The clamping cylinder then returns and clamps again, resulting in poor feeding continuity of the thermistors and low feeding efficiency. At the same time, some thermistor pins collide after production or in the vibration plate, causing the pins to shift in position. After loading, the shifted pins cannot be corrected, resulting in the pins after loading being unable to be aligned when welding the wires, resulting in welding failure. Summary of the Invention

[0004] The object of the present invention is to provide an automatic thermistor feeding device to solve the deficiencies in the above-mentioned background technology.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A thermistor automatic feeding device, comprising:

[0007] a rotatable mounting shaft;

[0008] A clamping mechanism, the clamping mechanism being arranged on the mounting shaft and being used for clamping and flipping the thermistor;

[0009] The clamping mechanism includes a clamping frame, one side of which is fixedly connected to a first connecting plate, and a thermistor pin adjustment clamping mechanism is provided at the bottom of the first connecting plate. The pin adjustment clamping mechanism is used to adjust the position of the thermistor pin before welding to facilitate subsequent automatic welding, and at the same time clamp the thermistor pin and the wiring harness after welding to facilitate cutting after welding.

[0010] As a further solution of the present invention: the clamping mechanism includes two mounting tubes and a venting groove provided in the clamping frame, the opposite ends of the two mounting tubes are fixedly connected to a clamping box, and one side of the clamping box is fixedly connected to a plurality of clamping airbags via a pipe;

[0011] One end of one of the mounting tubes is fixedly connected to a first hose, one end of the first hose is fixedly connected to a first air box fixedly connected to the mounting shaft, a first electric telescopic rod is fixedly connected inside the first air box, and one end of the first electric telescopic rod is fixedly connected to a first extrusion plate.

[0012] As a further solution of the present invention: the clamping mechanism also includes a transmission plate fixedly connected to the mounting shaft, the bottom of the transmission plate is fixedly connected to the second electric telescopic rod, the bottom end of the second electric telescopic rod is fixedly connected to the connecting frame, the connecting frame is rotatably connected to the flip shaft, the outer surface of the flip shaft is fixedly connected to the flip plate fixedly connected to the clamping frame, the outer surface of the flip shaft is transmission-connected to a transmission mechanism connected to the connecting frame, and the transmission mechanism is used to drive the flip shaft to rotate.

[0013] As a further solution of the present invention: the transmission mechanism includes a first transmission motor fixedly connected to the connecting frame, the output end of the first transmission motor is fixedly connected to the transmission shaft through a coupling, the outer surface of the transmission shaft is fixedly sleeved with a first gear, and the outer surface of the first gear is meshedly connected with a second gear fixedly sleeved on the flip shaft.

[0014] As a further solution of the present invention: the thermistor pin adjustment clamping mechanism includes a third electric telescopic rod fixedly connected to the first connecting plate, the bottom end of the third electric telescopic rod is fixedly connected to the second connecting plate, one side of the second connecting plate is fixedly connected to the fourth electric telescopic rod, one end of the fourth electric telescopic rod is fixedly connected to a transmission box, one side of the transmission box is fixedly connected to multiple adjustment boxes through pipes, one side of the adjustment box is fixedly connected to an adjustment airbag, and one side of the transmission box is fixedly connected to an inflation mechanism connected to the mounting shaft.

[0015] As a further solution of the present invention: the inflation mechanism includes a second hose fixedly connected to the transmission box, one end of the second hose fixedly connected to the second inflation box fixedly connected to the mounting shaft, a fifth electric telescopic rod fixedly connected in the second inflation box, and one end of the fifth electric telescopic rod fixedly connected to the second extrusion plate slidingly connected to the second inflation box.

[0016] As a further solution of the present invention: the bottom of the regulating box is fixedly connected to a connecting block, a bidirectional threaded rod is rotatably connected to the connecting block, the outer surface of the bidirectional threaded rod is threadedly fitted with a clamping plate, the clamping plate is slidably connected to a guide rod fixedly connected to the connecting block, and one end of the bidirectional threaded rod is fixedly connected to a second transmission motor fixedly connected to the connecting block through a coupling.

[0017] As a further solution of the present invention: a plurality of rubber clamping friction blocks are fixedly connected to the outer surface of the clamping airbag.

[0018] As a further solution of the present invention: the bottom end of the mounting shaft is fixedly connected to a mounting plate, a plurality of mounting holes are provided on the top of the mounting plate, and a driving mechanism is provided on the top of the mounting plate that is transmission-connected to the mounting shaft.

[0019] As a further solution of the present invention: the driving mechanism includes a driving motor fixedly connected to the mounting plate, the output end of the driving motor is fixedly connected to the driving shaft through a coupling, the outer surface of the driving shaft is fixedly sleeved with a first driving gear, and the outer surface of the first driving gear is meshedly connected with a second driving gear fixedly sleeved with the mounting shaft.

[0020] Beneficial effects of the present invention:

[0021] (1) The driving mechanism drives the mounting shaft and the transmission plate to rotate intermittently, and then the thermistor is clamped by the clamping mechanism on the transmission plate. Then, the thermistor pin is slowly corrected by the thermistor pin adjustment clamping mechanism to correct some deviated pins. Then, the thermistor enters the welding station to realize continuous automatic loading of the thermistor welding, and then the wires on the pins are welded. When the welding is completed, the thermistor pin adjustment clamping mechanism clamps and fixes the welding position to prevent the welding position from falling off during subsequent movement, thereby realizing continuous automatic loading of the thermistor. At the same time, the thermistor pin is corrected during loading to improve the welding quality. At the same time, automatic unloading after welding is realized, further improving the processing efficiency and welding effect of the thermistor in the welding process.

[0022] (2) By mechanically inflating the clamping airbags, the multiple clamping airbags inflated on the two clamping boxes drive the rubber clamping friction blocks to move, thereby flexibly clamping the thermistor, reducing damage to the thermistor surface, improving the protection of the thermistor during loading, and further improving the loading effect of the thermistor. At the same time, the second electric telescopic rod drives the connecting frame to move up and down, and the price of the wearer drives the flip shaft, flip plate and clamping frame to flip, thereby realizing the up and down movement and flipping of the clamped thermistor, which is convenient for subsequent loading and welding.

[0023] (3) By driving the adjustment box to move, the adjustment box is brought between the pins of the thermistor. Subsequently, by inflating the adjustment airbag on the adjustment box, the adjustment airbag applies force to both sides of the pins, gently and slowly pushing the pins to correct some pins that are out of position, facilitating the subsequent welding of the wires to the thermistor. At the same time, by using the adjustment airbag for gentle and slow correction, it effectively prevents excessive force suddenly applied during the correction process from causing the pins to become loose from the thermistor body and damaging the thermistor, improving the effect of thermistor correction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 is the first three-dimensional view of the external structure of the present invention;

[0026] Figure 2 is the second three-dimensional view of the external structure of the present invention;

[0027] Figure 3 is the first three-dimensional view of the external structure of the thermistor pin adjustment and clamping mechanism of the present invention;

[0028] Figure 4 is the second three-dimensional view of the external structure of the thermistor pin adjustment and clamping mechanism of the present invention;

[0029] Figure 5 is the third three-dimensional view of the external structure of the thermistor pin adjustment and clamping mechanism of the present invention;

[0030] Figure 6 is the front view of the internal structure of the clamping frame of the present invention;

[0031] Figure 7 is the front view of the internal structure of the first air inflation box and the second air inflation box of the present invention;

[0032] Figure 8 is the present invention Figure 1 The enlarged view of A in.

[0033] In the figure: 1, mounting shaft; 2, clamping frame; 3, first connecting plate; 11, mounting tube; 12, ventilation groove; 13, clamping box; 14, clamping airbag; 15, first hose; 16, first air inflation box; 17, first electric telescopic rod; 18, first pressing plate; 19, rubber clamping friction block; 21, transmission plate; 22, second electric telescopic rod; 23, connecting frame; 24, turning shaft; 25, first driving motor; 26, transmission shaft; 27, first gear; 28, second gear; 29, turning plate; 31, third electric telescopic rod; 32, second connecting plate; 33, transmission box; 34, adjusting box; 35, adjusting airbag; 36, second hose; 37, second air inflation box; 38, fifth electric telescopic rod; 39, second pressing plate; 390, fourth electric telescopic rod; 41, connecting block; 42, bidirectional threaded rod; 43, clamping plate; 44, guide rod; 45, second driving motor; 51, mounting disc; 52, mounting hole; 53, driving motor; 54, driving shaft; 55, first driving gear; 56, second driving gear. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1

[0036] Please refer to Figures 1 - 8 As shown in the figure, the present invention is a thermistor automatic feeding device, including a mounting disc 51. A mounting shaft 1 is rotatably connected to the top of the mounting disc 51. A transmission plate 21 is fixedly connected to the outer surface of the mounting shaft 1. A clamping mechanism is fixedly connected to the bottom of the transmission plate 21. The clamping mechanism is used for clamping and turning the thermistor. Mounting holes 52 are provided in the top of the mounting disc 51;

[0037] A pin adjustment clamping mechanism is arranged on the clamping mechanism. The pin adjustment clamping mechanism is used for adjusting the position of the thermistor pins before welding, facilitating subsequent automatic welding. At the same time, it clamps the thermistor pins and the wire harness after welding, facilitating the feeding after welding. The outer surface of the mounting shaft 1 is in transmission connection with a driving mechanism connected to the mounting disc 51. The driving mechanism is used for driving the mounting shaft 1 to rotate;

[0038] The drive mechanism includes a drive motor 53 fixedly connected to the mounting plate 51. The drive motor 53 is controlled by a PLC programming program to control the forward and reverse rotation and rotation angle of the drive motor 53. The output end of the drive motor 53 is fixedly connected to a drive shaft 54 through a coupling. The outer surface of the drive shaft 54 is fixedly sleeved with a first drive gear 55. The outer surface of the first drive gear 55 is meshedly connected to a second drive gear 56 fixedly sleeved with the mounting shaft 1.

[0039] The mounting shaft 1 is driven to rotate by the driving motor 53, and the mounting shaft 1 drives the transmission plate 21 and the clamping mechanism to rotate, so that the clamping mechanism is rotated to the slide rail after the vibrating disk is discharged, and then the thermistor is slowly clamped and fixed by the clamping mechanism, and then the mounting shaft 1 and the transmission plate 21 are driven by the driving mechanism to rotate 45 °, so that it is rotated to the adjustment position, and at the same time, the next clamping mechanism clamps and takes the material to the thermistor on the slide rail. At this time, the thermistor on the adjustment position is slowly corrected by the thermistor pin adjustment clamping mechanism to correct some deviated pins, and then rotated 45 ° again. At the same time, the clamping mechanism drives the clamped thermistor to flip 90 °, and now enters the welding station to realize automatic loading of the thermistor welding, and then performs welding of the wires on the pins. When welding is completed, the thermistor pin adjusts the clamping mechanism to clamp and fix the welding position to prevent the welding from falling off during subsequent movement, and then drives the transmission plate 21 to rotate 45 ° again. Then the clamping mechanism no longer clamps, and automatic unloading is realized. This enables continuous automatic loading of thermistors, correction of thermistor pins during loading, and automatic unloading after welding, further improving the processing efficiency of thermistors during the welding process.

[0040] Example 2

[0041] Based on Example 1, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8As shown, the clamping mechanism includes a second electric telescopic rod 22 fixedly connected to the transmission plate 21, the bottom end of the second electric telescopic rod 22 is fixedly connected to a connecting frame 23, a flip shaft 24 is rotatably connected in the connecting frame 23, the outer surface of the flip shaft 24 is fixedly connected to the flip plate 29, the bottom of the flip plate is fixedly connected to the clamping frame 2, the outer surface of the flip shaft 24 is transmission-connected to the transmission mechanism connected to the connecting frame 23, the transmission mechanism is used to drive the flip shaft 24 to rotate, the clamping frame 2 is fixedly connected to two mounting tubes 11, and the clamping frame 2 is provided with the same mounting tube 11 as the mounting tube 11. The ventilation groove 12, one end of one mounting tube 11 is fixedly connected to a first hose 15, one end of the first hose 15 is fixedly connected to a first air box 16 fixedly connected to the mounting shaft 1, a first electric telescopic rod 17 is fixedly connected to the first air box 16, one end of the first electric telescopic rod 17 is fixedly connected to a first extrusion plate 18, the opposite ends of the two mounting tubes 11 are fixedly connected to a clamping box 13, one side of the clamping box 13 is fixedly connected to a plurality of clamping air bags 14 through a pipe, and the outer surface of the clamping air bag 14 is fixedly connected to a plurality of rubber clamping friction blocks 19;

[0042] The transmission mechanism includes a first transmission motor 25 fixedly connected to the connection frame 23. The first transmission motor 25 is controlled by a PLC programming program to control the first transmission motor 25 to rotate forward and reverse and rotate at an angle. The output end of the first transmission motor 25 is fixedly connected to a transmission shaft 26 through a coupling. The outer surface of the transmission shaft 26 is fixedly sleeved with a first gear 27. The outer surface of the first gear 27 is meshedly connected to a second gear 28 fixedly sleeved on the flip shaft 24.

[0043] The first transmission motor 25 drives the transmission shaft 26 to rotate, and the transmission shaft 26 drives the flip shaft 24 to rotate through the first gear 27 and the second gear 28 .

[0044] By inserting the clamping frame 2 into the thermistor, the first extrusion plate 18 is driven to move by the first electric telescopic rod 17, and the first extrusion plate 18 pushes the air in the first air box 16, so that the air enters the clamping box 13 through the first hose 15, and then the clamping box 13 inflates the clamping airbag 14 through the tube. At this time, the clamping airbag 14 is inflated, and the multiple clamping airbags 14 on the two clamps are inflated to drive the rubber clamping friction block 19 to move, flexibly clamping the thermistor, reducing damage to the surface of the thermistor, improving the protection of the thermistor during loading, and further improving the loading effect of the thermistor. At the same time, the connecting frame 23 is driven up and down by the second electric telescopic rod 22, and the flip shaft 24 is driven to rotate by the transmission mechanism. The flip shaft 24 drives the flip plate 29 and the clamping frame 2 to rotate, and the clamping frame 2 drives the clamped thermistor to flip, thereby realizing the up and down movement and flipping of the clamped thermistor.

[0045] Embodiment III

[0046] On the basis of Embodiment II, please refer to Figure 2 、 Figure 4 、 Figure 5 and Figure 7 As shown, the clamping mechanism for adjusting the pins of the thermistor includes a first connecting plate 3 fixedly connected to the clamping frame 2. A third electric telescopic rod 31 is fixedly connected to the bottom of the first connecting plate 3. The bottom end of the third electric telescopic rod 31 is fixedly connected to a second connecting plate 32. A fourth electric telescopic rod 390 is fixedly connected to one side of the second connecting plate 32. One end of the fourth electric telescopic rod 390 is fixedly connected to a transmission box 33. A plurality of adjustment boxes 34 are fixedly connected to one side of the transmission box 33 through a pipeline. An adjustment airbag 35 is fixedly connected to one side of the adjustment box 34. A second hose 36 is fixedly connected to one side of the transmission box 33. One end of the second hose 36 is fixedly connected to a second air inflation box 37 fixedly connected to the mounting shaft 1. A fifth electric telescopic rod 38 is fixedly connected inside the second air inflation box 37. One end of the fifth electric telescopic rod 38 is fixedly connected to a second pressing plate 39 slidably connected to the second air inflation box 37;

[0047] After the thermistor is clamped, then the third electric telescopic rod 31 drives the second connecting plate 32 to move downward. Then the fourth electric telescopic rod 390 on the second connecting plate 32 drives the transmission box 33 to move, so that the adjustment box 34 enters between the pins of the thermistor. Then the fifth electric telescopic rod 38 drives the second pressing plate 39 to move. The second pressing plate 39 moves inside the second air inflation box 37. The second air inflation box 37 passes the gas into the adjustment box 34 through the second hose 36. Then the adjustment box 34 inflates the adjustment airbag 35. The adjustment airbag 35 applies force to both sides of the pin, and gently pushes the pin flexibly, corrects some pins that are out of position, which is convenient for subsequent soldering of the wire of the thermistor. At the same time, through the flexible and slow correction of the adjustment airbag 35, it effectively prevents the force suddenly applied during the correction process from being too large, resulting in the loosening of the pin and the thermistor body, and causing damage to the thermistor, improving the effect of thermistor correction.

[0048] Embodiment IV

[0049] On the basis of Embodiment III, please refer to Figure 1 、 Figure 4 and Figure 5As shown in the figure, a connecting block 41 is fixedly connected to the bottom of the adjustment box 34. A bidirectional threaded rod 42 is rotatably connected to the connecting block 41. A clamping plate 43 is in threaded engagement with the outer surface of the bidirectional threaded rod 42. A guide rod 44 fixedly connected to the connecting block 41 is slidably connected to the clamping plate 43. One end of the bidirectional threaded rod 42 is fixedly connected to a second drive motor 45 fixedly connected to the connecting block 41 through a coupling. The second drive motor 45 is controlled by a PLC programming program, which can control the forward and reverse rotation and the rotation angle of the second drive motor 45. At the same time, the thread directions between the two clamping plates 43 on the surface of the bidirectional threaded rod 42 are opposite. When the bidirectional threaded rod 42 rotates forward and backward, the clamping plates 43 on the bidirectional threaded rod 42 move away from or close to each other.

[0050] After the thermistor is corrected and loaded, the pins are then soldered to the wires. After the wire soldering is completed, the second drive motor 45 is driven to drive the bidirectional threaded rod 42 to rotate. The bidirectional threaded rod 42 drives the clamping plates 43 to move closer to each other, so that the clamping plates 43 clamp and fix the position where the thermistor pins are soldered to the wires, preventing the soldering joint from falling off after unloading. Then, the drive mechanism drives the mounting shaft 1 to rotate, so that the thermistor after welding the wires is automatically unloaded.

[0051] The working principle of the present invention: The drive motor 53 drives the mounting shaft 1 to rotate. The mounting shaft 1 drives the transmission plate 21 and the clamping mechanism to rotate, so that the clamping mechanism rotates to the slide rail after the vibration disk discharges the material. Then, the clamping mechanism slowly clamps and fixes the thermistor. Then, the drive mechanism drives the mounting shaft 1 and the transmission plate 21 to rotate 45°, so that it rotates to the adjustment position. At the same time, the next clamping mechanism clamps and picks up the thermistor on the slide rail. At this time, the thermistor at the adjustment position adjusts the clamping mechanism to slowly correct the pins of the thermistor, so as to correct some deviated pins. Then, it rotates 45° again. At the same time, the clamping mechanism drives the clamped thermistor to flip 90°. At this time, it enters the welding station, realizing the automatic feeding of the thermistor for welding. Then, the wires are soldered to the pins. After the soldering is completed, the thermistor pin adjustment clamping mechanism clamps and fixes the welding position to prevent the soldering joint from falling off during subsequent movement. Then, by driving the transmission plate 21 to rotate 45° again, and then the clamping mechanism stops clamping, realizing automatic unloading. Thus, the continuous automatic feeding of the thermistor is realized. At the same time, the pins of the thermistor are corrected during feeding, and the automatic unloading after welding is realized, further improving the processing efficiency of the thermistor during the welding process.

[0052] The above has described in detail an embodiment of the present invention, but the above content is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. A thermistor automatic feeding device, characterized in that, Comprising: A rotatable mounting shaft; A clamping mechanism, which is arranged on the mounting shaft and is used for clamping and flipping the thermistor; The clamping mechanism includes a clamping frame. One side of the clamping frame is fixedly connected with a first connecting plate. At the bottom of the first connecting plate, there is a thermistor pin adjustment clamping mechanism. The pin adjustment clamping mechanism is used for adjusting the position of the thermistor pins before welding, facilitating subsequent automatic welding. At the same time, it clamps the thermistor pins and the wire harness after welding, facilitating the blanking after welding; The clamping mechanism includes two mounting pipes, a ventilation groove opened in the clamping frame, and a transmission plate fixedly connected to the mounting shaft. At the opposite ends of the two mounting pipes, there are fixedly connected clamping boxes. One side of the clamping box is fixedly connected with a plurality of clamping air bags through pipes; One end of one of the mounting pipes is fixedly connected with a first hose. One end of the first hose is fixedly connected with a first air inflation box fixedly connected to the mounting shaft. Inside the first air inflation box, there is fixedly connected a first electric telescopic rod. One end of the first electric telescopic rod is fixedly connected with a first pressing plate; At the bottom of the transmission plate, there is fixedly connected a second electric telescopic rod. The bottom end of the second electric telescopic rod is fixedly connected with a connecting frame. Inside the connecting frame, there is a rotatably connected rotation shaft. On the outer surface of the rotation shaft, there is fixedly connected a flipping plate fixedly connected to the clamping frame. On the outer surface of the rotation shaft, there is a transmission connection with a transmission mechanism connected to the connecting frame. The transmission mechanism is used for driving the rotation shaft to rotate; The thermistor pin adjustment clamping mechanism includes a third electric telescopic rod fixedly connected to the first connecting plate. The bottom end of the third electric telescopic rod is fixedly connected with a second connecting plate. One side of the second connecting plate is fixedly connected with a fourth electric telescopic rod. One end of the fourth electric telescopic rod is fixedly connected with a transmission box. One side of the transmission box is fixedly connected with a plurality of adjustment boxes through pipes. One side of the adjustment box is fixedly connected with an adjustment air bag.

2. The automatic feeding device for thermistors according to claim 1, characterized in that, The transmission mechanism includes a first transmission motor fixedly connected to the connecting frame. The output end of the first transmission motor is fixedly connected with a transmission shaft through a coupling. On the outer surface of the transmission shaft, there is fixedly sleeved a first gear. On the outer surface of the first gear, there is an engaged connection with a second gear fixedly sleeved on the rotation shaft; 3. The automatic feeding device for a thermistor according to claim 1, characterized in that, One side of the transmission box is fixedly connected with a air inflation mechanism connected to the mounting shaft.

4. The automatic feeding device for thermistors according to claim 3, characterized in that, The air inflation mechanism includes a second hose fixedly connected to the transmission box. One end of the second hose is fixedly connected with a second air inflation box fixedly connected to the mounting shaft. Inside the second air inflation box, there is fixedly connected a fifth electric telescopic rod. One end of the fifth electric telescopic rod is fixedly connected with a second pressing plate slidably connected to the second air inflation box; 5. The automatic feeding device for thermistors according to claim 1, characterized in that, At the bottom of the adjustment box, there is fixedly connected a connecting block. On the connecting block, there is a rotatably connected bidirectional threaded rod. On the outer surface of the bidirectional threaded rod, there is a threaded fit with a clamping plate. On the clamping plate, there is a sliding connection with a guide rod fixedly connected to the connecting block. One end of the bidirectional threaded rod is fixedly connected with a second transmission motor fixedly connected to the connecting block through a coupling; 6. The automatic feeding device for a thermistor according to claim 1, characterized in that On the outer surface of the clamping air bag, there are fixedly connected a plurality of rubber clamping friction blocks; 7. The automatic feeding device for a thermistor according to claim 1, characterized in that At the bottom end of the mounting shaft, there is fixedly connected a mounting disc. On the top of the mounting disc, there are opened a plurality of mounting holes. On the top of the mounting disc, there is a driving mechanism in transmission connection with the mounting shaft.

8. The automatic feeding device for thermistors according to claim 7, characterized in that, The driving mechanism includes a driving motor fixedly connected to the mounting disc. The output end of the driving motor is fixedly connected with a driving shaft through a coupling. A first driving gear is fixedly sleeved on the outer surface of the driving shaft, and a second driving gear fixedly sleeved on the mounting shaft is meshed with the outer surface of the first driving gear.

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