Thermistor manufacturing device and forming process

Abstract

The invention relates to a thermistor manufacturing device and a forming process, the thermistor manufacturing device comprises a rack, two compression rollers are arranged on the rack, each compression roller comprises a heating tank and an abutting cylinder coaxially and rotatably connected to the outer wall of the heating tank, the heating tank communicates with an oil inlet pipe and an oil outlet pipe, a temperature sensing sliding cylinder is arranged on the rack, and a piston is slidably connected in the temperature sensing sliding cylinder; and temperature sensing fluid is filled between the piston and the bottom wall of the temperature sensing sliding barrel. When the room temperature is reduced, the piston drives the adjusting rack to slide in the direction close to the bottom wall of the temperature sensing sliding barrel, the adjusting rack drives the adjusting gear to rotate in the direction of increasing the opening and closing degree of the heating medium valve, the opening and closing degree of the heating medium valve is increased, the flow of the heating medium entering the heating tank is increased, and the heating capacity of the pressing and unfolding roller to materials is enhanced. The method has the effect that the heating medium supply flow is automatically adjusted along with the change of the room temperature.

Description

Technical Field

[0001] The present application relates to the field of thermistor manufacturing technology and equipment, and in particular to a thermistor manufacturing device and molding process. Background Art

[0002] A thermistor is a sensor resistor whose resistance changes with temperature. The production of thermistors requires a screw extruder to heat and thoroughly mix the raw materials. The mixed raw materials are then initially pressed into a strip. A calender further presses the strip into a uniformly thick ribbon. Finally, the ribbon is processed into a finished thermistor by stamping or cutting.

[0003] Calendering uses roller pressure to process materials such as metals and plastics into sheets, strips, or tubes of varying shapes and thicknesses. To maintain the material's ductility, reduce air bubbles, and improve the quality of the finished product, a heat medium is typically introduced into the rollers to increase their temperature and heat the material.

[0004] Regarding the above-mentioned related technologies, the thermal insulation performance of the production workshop is poor, and room temperature fluctuations are inevitable. In order to ensure product quality, staff are required to adjust the flow rate of heat medium supply in time when the room temperature changes to maintain the stability of material ductility, and the labor cost is high. Summary of the Invention

[0005] In order to achieve automatic adjustment of the heat medium supply flow rate as the room temperature changes, the present application provides a thermistor manufacturing device and a molding process.

[0006] In a first aspect, the present application provides a thermistor manufacturing device, which adopts the following technical solution: A thermistor manufacturing device includes a frame, two pressing rollers for cooperating in pressing and expanding a blank are provided on the frame, a driving mechanism for driving the pressing rollers to rotate is provided on the frame, the pressing rollers include a heating tank and an abutting cylinder coaxially connected to the outer wall of the heating tank, the heating tank is connected with an oil inlet pipe for supplying heat medium and an oil outlet pipe for discharging the heat medium, a temperature-sensitive slide is provided on the frame, a piston is slidably connected in the temperature-sensitive slide, a temperature-sensitive fluid that expands and contracts with room temperature is filled between the piston and the bottom wall of the temperature-sensitive slide, an adjustment rack is fixedly connected to the end of the piston away from the temperature-sensitive fluid, a heat medium valve for adjusting the flow of heat medium is provided on the oil inlet pipe, an adjustment gear for adjusting the opening and closing degree of the heat medium valve is provided on the heat medium valve, the adjustment gear is meshed with the adjustment rack, and when the room temperature drops, the adjustment rack drives the adjustment gear to rotate in the direction of increasing the opening and closing degree of the heat medium valve.

[0007] By adopting this technical solution, when the room temperature in the workshop changes, the temperature of the temperature-sensitive fluid changes accordingly, causing thermal expansion and contraction, driving the piston to slide. When the room temperature drops, the piston drives the adjustment rack to slide toward the bottom wall of the temperature-sensitive slide cylinder. The adjustment rack then rotates the adjustment gear in a direction that increases the opening and closing of the heat medium valve. This increases the opening and closing of the heat medium valve, increasing the flow of heat medium into the heating tank and enhancing the heating capacity of the press rollers for the material. This achieves automatic adjustment of the heat medium supply flow rate in response to changes in room temperature.

[0008] Optionally, the stretching roller is divided into a fixed roller and a movable roller arranged in parallel. The fixed roller is arranged on a frame, and an adjustment plate is slidably connected to the frame. The movable roller is arranged on the adjustment plate and the sliding direction of the adjustment plate is parallel to the length direction of the movable roller. The frame is provided with an adjustment mechanism for driving the adjustment plate to slide.

[0009] By adopting the above technical solution, different thermistor models often have different thicknesses. To accommodate the production of different thermistor models, it is necessary to be able to produce strip stock of varying thicknesses. The press rollers are divided into fixed rollers and movable rollers. The movable rollers are mounted on an adjustment plate. The adjustment mechanism slides the adjustment plate to adjust the distance between the fixed and movable rollers. This allows for the production of strip stock of varying thicknesses, thus expanding the device's applicability.

[0010] Optionally, the adjustment mechanism includes a threaded rod rotatably connected to the frame, the length direction of the threaded rod is parallel to the sliding direction of the adjustment plate, the threaded rod is threadedly connected to the adjustment plate, the threaded rod is coaxially fixedly connected to a first adjusting bevel gear, an adjusting rod is rotatably connected to the frame, and the adjusting rod is coaxially fixedly connected to a second adjusting bevel gear that meshes with the first adjusting bevel gear.

[0011] By adopting the above technical solution, rotating the adjusting rod can drive the second adjusting bevel gear to rotate, and then drive the first adjusting bevel gear to rotate. The first adjusting bevel gear drives the threaded rod to rotate. The rotating threaded rod can drive the sliding of the adjusting plate, and the threaded rod that stops rotating has a certain limiting effect, which can lock the position of the movable roller after the position adjustment is completed.

[0012] Optionally, the frame is provided with a bellows, the bellows is provided with an air outlet for blowing air into the strip-shaped blank, and the frame is provided with a fan for blowing air into the bellows.

[0013] By adopting the above technical solution, the finished strip blank needs to be quickly cooled and shaped. A bellows is set and an air outlet facing the strip blank is opened on the bellows. The fan blows air into the bellows to generate an airflow passing through the surface of the strip blank, taking away the heat from the surface of the strip blank, thereby achieving rapid cooling of the strip blank.

[0014] Optionally, a refrigeration box is provided on the frame, and the fan is installed on the refrigeration box. An air duct is connected between the air box and the refrigeration box. The air duct is provided with a blower valve for adjusting the air flow rate. The blower valve is provided with a blower gear for adjusting the opening and closing degree of the blower valve. The blower gear is engaged with the adjustment rack. When the room temperature rises, the adjustment rack drives the blower gear to rotate in the direction of increasing the opening and closing degree of the blower valve.

[0015] By adopting the above technical solution, the required cooling air volume for the strip blank varies at different room temperatures. When the room temperature changes, for example, when it rises, the piston drives the adjustment rack to slide away from the bottom wall of the temperature-sensing slide, which in turn drives the blast gear to rotate in a direction that increases the opening and closing of the blast valve. This increases the opening and closing of the blast valve, and the air volume entering the bellows increases, thus achieving automatic adjustment of the air supply flow rate in the bellows as the room temperature changes.

[0016] Optionally, a cooling water tank is provided on the rack, and the cooling water tank is connected to a cooling machine for cooling the cooling water through a pipeline. A cooling pipe is connected between the output end of the cooling machine and the cooling water tank, and the cooling pipe is installed in the refrigeration box.

[0017] By adopting the above technical solution, a cooling water tank is set up to store cooling water, and the cooling water tank supplies cooling water to the cooler through a pipeline. The cooler cools the cooling water and then passes it into the cooling pipe. The air entering the cooling box contacts the cooling pipe and performs heat exchange. The air temperature in the cooling box is reduced, thereby improving the air cooling efficiency of the strip blank.

[0018] Optionally, the rack is provided with a detection and control circuit, which includes a sensing module, a comparison module and a control module: The sensing module includes a temperature sensor, which is arranged on the rack and is used to detect the room temperature and output a sensing signal; A comparison module is electrically connected to the sensing module and is used to receive a sensing signal from the sensing module. When the comparison module receives the sensing signal, the comparison module compares a voltage value corresponding to the sensing signal with a preset voltage value. The preset voltage value corresponds to the highest room temperature during normal production of the strip blank. If the voltage value of the sensing signal is greater than the preset voltage value, the comparison module outputs a start signal. The control module is electrically connected to the comparison module. The control module is used to receive the start signal of the comparison module. When the control module receives the start signal, it outputs a control signal, and the control signal controls the cooling machine to start refrigeration.

[0019] By adopting the above technical solution, the temperature sensor of the sensing module detects the room temperature and outputs a sensing signal, the comparison module receives the sensing signal, and the comparison module compares the voltage value of the received sensing signal with a preset voltage value. The preset voltage value corresponds to the highest room temperature during normal production of the strip blank. If the voltage value corresponding to the sensing signal is greater than the preset voltage value, a start signal is output. The control module receives the start signal and outputs a control signal. The control signal controls the cooler to start refrigeration. The cooler can be automatically started for refrigeration when the room temperature is higher than the highest room temperature during normal production of the strip blank.

[0020] In a second aspect, the present application provides a thermistor manufacturing and molding process, which adopts the following technical solutions: S1: Add the raw materials for producing thermistor into the screw extruder; S2: Using a screw extruder, the raw materials are melted and mixed and initially pressed into strip-shaped blanks; S3: The strip-shaped blank is conveyed between two pressing rollers, which further press the strip-shaped blank to obtain a strip-shaped blank with uniform thickness; S4: Use a punching machine to punch out the strip blank into a finished thermistor.

[0021] In summary, the present application includes at least one of the following beneficial technical effects of the thermistor manufacturing device and molding process: 1. The temperature-sensitive fluid in the temperature-sensitive slide cylinder will expand and contract with changes in room temperature. For example, when the room temperature drops, the temperature-sensitive fluid will drop in temperature, resulting in a decrease in volume, which drives the piston to slide toward the bottom wall of the temperature-sensitive slide cylinder. The piston drives the adjustment rack to slide in the same direction. The moving adjustment rack drives the adjustment gear to rotate in the direction of increasing the opening and closing degree of the heat medium valve. The opening and closing degree of the heat medium valve increases, and the heat medium flow entering the heating tank increases, and the heating capacity of the press roller on the material is enhanced. Conversely, when the room temperature rises, the heating capacity of the press roller on the material is weakened, realizing the automatic adjustment of the heat medium supply flow with changes in room temperature; 2. Under different room temperatures, the cooling air volume required for the strip blank is also different. When the room temperature changes, such as when the room temperature rises, the temperature of the temperature-sensitive fluid rises accordingly, causing its volume to increase, driving the piston to slide away from the bottom wall of the temperature-sensitive slide cylinder, and the piston drives the adjustment rack to slide away from the bottom wall of the temperature-sensitive slide cylinder. The adjustment rack drives the blast gear to rotate in the direction of increasing the opening and closing degree of the blast valve. The opening and closing degree of the blast valve increases, and the air volume entering the bellows increases. Conversely, when the room temperature decreases, the air volume entering the bellows decreases, realizing automatic adjustment of the air supply flow in the bellows as the room temperature changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0023] Figure 2 It is a schematic structural diagram used to illustrate the cooling machine in the embodiment of the present application.

[0024] Figure 3 It is a schematic diagram for showing the internal structure of the temperature-sensing slide in the embodiment of the present application.

[0025] Figure 4 It is a schematic diagram for showing the internal structure of the spreading roller in the embodiment of the present application.

[0026] Figure 5 It is a schematic diagram for showing the internal structure of the refrigeration box in the embodiment of the present application.

[0027] Figure 6 It is a schematic diagram for illustrating the sensing module, the comparison module and the control module in the embodiment of the present application.

[0028] Explanation of reference numerals: 1. frame; 2. press roller; 21. movable roller; 22. fixed roller; 23. heating tank; 231. oil inlet pipe; 2311. heat medium valve; 2312. adjustment gear; 232. oil discharge pipe; 233. driven gear; 24. abutting cylinder; 3. driving mechanism; 31. rotating motor; 311. driving gear; 4. temperature-sensing slide; 41. piston; 42. temperature-sensing fluid; 43. adjustment rack; 51. regulating plate ; 52. Adjustment mechanism; 521. Threaded rod; 5211. First adjustment bevel gear; 522. Adjustment rod; 5221. Second adjustment bevel gear; 6. Bellows; 61. Air outlet; 62. Air duct; 621. Blower valve; 6211. Blower gear; 7. Refrigeration box; 71. Fan; 8. Cooling water tank; 81. Cooling machine; 82. Cooling pipe; 91. Sensing module; 911. Temperature sensor; 92. Comparison module; 93. Control module. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0030] The embodiment of the present application discloses a device for manufacturing a thermistor.

[0031] Reference Figure 1 、 Figure 2 and Figure 3A thermistor manufacturing device includes a frame 1, which is made of metal material and is used to position and install various equipment. The frame 1 is equipped with two pressing rollers 2 for cooperating with the pressing and spreading of the blank and a winding roller for winding the strip blank. The pressing roller 2 includes a heating tank 23 and an abutment cylinder 24 coaxially connected to the outer wall of the heating tank 23. The frame 1 is equipped with a driving mechanism 3, including a rotating motor 31, the output shaft of the rotating motor 31 is coaxially fixedly connected to the driving gear 311, and the abutment cylinder 24 is coaxially fixedly connected to the driven gear 233 meshing with the driving gear 311. The driving mechanism 3 is used to drive the abutment cylinder 24 to rotate. The two ends of the heating tank 23 are respectively connected to an oil inlet pipe 231 and an oil outlet pipe 232. The oil inlet pipe 231 is used to supply heat medium to the heating tank 23, and the oil outlet pipe 232 is used to discharge the heat medium in the heating tank 23. Mounted on the frame 1 is a temperature-sensing slide 4, a hollow cube with one end open. A piston 41 slides along its length, sealed against the inner wall of the slide. The space between the piston 41 and the bottom wall is filled with a temperature-sensing fluid 42, a liquid with a high coefficient of thermal expansion and contraction, such as mercury. When the room temperature in the workshop fluctuates, air passing through the slide 4 exchanges heat with the temperature-sensing fluid 42, causing the temperature of the fluid 42 to change, expanding and contracting, which in turn drives the piston 41 to slide. An adjustment rack 43 is fixedly connected to the end of the piston 41 away from the temperature-sensing fluid 42. The rack's length is adjusted to be parallel to the sliding direction of the piston 41. A heat medium valve 2311 is installed on the oil inlet pipe 231. Heat medium valve 2311 is used to adjust the heat medium flow rate in the oil inlet pipe 231. The handwheel on heat medium valve 2311 is replaced with an adjustment gear 2312. Rotating the adjustment gear 2312 can adjust the opening and closing degree of heat medium valve 2311. The adjustment gear 2312 meshes with the adjustment rack 43. When the room temperature drops, the temperature-sensitive fluid 42 cools down and contracts, and the piston 41 drives the adjustment rack 43 to slide toward the bottom wall of the temperature-sensitive slide 4. The adjustment rack 43 drives the adjustment gear 2312 to rotate in the direction of increasing the opening and closing degree of the heat medium valve 2311. The opening and closing degree of the heat medium valve 2311 increases, the heat medium flow entering the heating tank 23 increases, and the heating capacity of the spreading roller 2 for the material is enhanced. Conversely, when the room temperature rises, the opening and closing degree of the heat medium valve 2311 decreases, the heat medium flow entering the heating tank 23 decreases, and the heating capacity of the spreading roller 2 for the material is weakened, thereby realizing automatic adjustment of the heat medium supply flow as the room temperature changes.

[0032] Reference Figure 4Different types of thermistors often have different thicknesses. In order to adapt to the production of different types of thermistors, it is necessary to be able to match the production of strip blanks of different thicknesses. The spreading roller 2 is divided into a fixed roller 22 and a movable roller 21 arranged in parallel. The fixed roller 22 is directly mounted on the frame 1 and is fixed in position. An adjustment plate 51 is slidably connected to the frame 1. The movable roller 21 is mounted on the adjustment plate 51 and the sliding direction of the adjustment plate 51 is parallel to the length direction of the movable roller 21. The frame 1 is provided with an adjustment mechanism 52 for driving the adjustment plate 51 to slide. The adjustment mechanism 52 slides the adjustment plate 51 to adjust the distance between the fixed roller 22 and the movable roller 21, thereby adapting to the production of strip blanks of different thicknesses, which helps to expand the scope of application of the device.

[0033] Reference Figure 4 The adjustment mechanism 52 includes a threaded rod 521, which is rotatably connected to the frame 1 and whose length is parallel to the sliding direction of the adjustment plate 51. The threaded rod 521 is threadedly connected to the adjustment plate 51, and the rotating threaded rod 521 can drive the adjustment plate 51 to slide. The threaded rod 521 is coaxially fixedly connected to a first adjustment bevel gear 5211. An adjustment rod 522 is rotatably connected to the frame 1, and a second adjustment bevel gear 5221 is coaxially fixedly connected to the adjustment rod 522 and meshes with the first adjustment bevel gear 5211. Rotating the adjustment rod 522 drives the second adjustment bevel gear 5221 to rotate, thereby driving the first adjustment bevel gear 5211 to rotate. The first adjustment bevel gear 5211 drives the threaded rod 521 to rotate, and the stopped threaded rod 521 has a certain limiting effect, which can lock the position of the movable roller 21 after the position adjustment is completed. This facilitates driving and controlling the sliding of the adjustment plate 51.

[0034] Reference Figure 2 and Figure 4 To ensure the stability of the strip's shape, the finished strip needs to be quickly cooled and shaped. Two bellows 6 are mounted on the frame 1, one on each side of the strip. Each bellows 6 has a strip-shaped air outlet 61 facing the strip forming machine. A fan 71 is mounted on the frame to blow air into the bellows 6. This blows air into the bellows 6, generating an airflow that passes over the strip's surface, removing heat from the surface and rapidly cooling the strip.

[0035] Reference Figure 2 and Figure 3To control costs, production workshops generally have poor insulation measures, and the room temperature in the production workshop is prone to fluctuations. At different room temperatures, the cooling air volume required for the finished strip blank varies. A refrigeration box 7 is mounted on the frame 1, and a fan 71 is mounted on the refrigeration box 7. An air duct 62 connects the air box 6 and the refrigeration box 7. A blower valve 621 is mounted on the air duct 62, which is used to adjust the air volume within the air duct 62. A blower gear 6211 is mounted on the blower valve 621, which is used to adjust the opening and closing degree of the blower valve 621. The blower gear 6211 meshes with the adjustment rack 43. When the room temperature changes, for example, when the room temperature rises, the piston 41 drives the adjustment rack 43 to slide away from the bottom wall of the temperature-sensing slide 4, and the adjustment rack 43 drives the blower gear 6211 to rotate in the direction of increasing the opening and closing degree of the blower valve 621, the opening and closing degree of the blower valve 621 increases, and the air volume entering the bellows 6 increases. Conversely, when the room temperature drops, the adjustment rack 43 drives the blower gear 6211 to rotate in the direction of reducing the opening and closing degree of the blower valve 621, the opening and closing degree of the blower valve 621 decreases, and the air volume entering the bellows 6 decreases, thereby realizing automatic adjustment of the air supply flow in the bellows 6 as the room temperature changes.

[0036] Reference Figure 2 and Figure 5 When the room temperature is too high, relying solely on blowing room temperature air to cool the strip billet is inefficient, which restricts the production speed of the strip billet. A cooling water tank 8 is mounted on the frame 1. The cooling water tank 8 is connected to a chiller 81 via a pipeline. The cooling water tank 8 supplies cooling water to the chiller 81 via a pipeline. A cooling pipe 82 is connected between the output end of the chiller 81 and the cooling water tank 8. The cooling pipe 82 is installed in the refrigeration box 7. The cooling water is cooled by the chiller 81 and then passed into the cooling pipe 82. The air entering the cooling box contacts the cooling pipe 82 and exchanges heat, which reduces the temperature of the air in the cooling box, thereby improving the air cooling efficiency of the strip billet.

[0037] Reference Figure 2 and Figure 6 , a detection and control circuit is provided on the rack 1, and the detection and control circuit includes a sensing module 91, a comparison module 92 and a control module 93: The sensing module 91 includes: Temperature sensor 911, which is installed on rack 1 and is used to detect room temperature and output a sensing signal; The comparison module 92 includes: a comparator T, wherein a positive input terminal of the comparator T is electrically connected to an output terminal of the temperature sensor 911; A transistor Q, wherein the base of the transistor Q is electrically connected to the output terminal of the comparator T; Resistor R1, one end of the resistor R1 is electrically connected to the collector of the transistor Q, and the other end of the resistor R1 is electrically connected to the power supply VCC; The electromagnetic coil KA1 of the relay, one end of the electromagnetic coil KA1 of the relay is electrically connected to the emitter of the transistor Q; Resistor R2, one end of the resistor R2 is electrically connected to the end of the electromagnetic coil KA1 of the relay away from the transistor Q, and the other end of the resistor R2 is grounded; The control module 93 includes: A normally open switch KA1-1 of the relay, one end of which is electrically connected between the electromagnetic coil KA1 of the relay and the resistor R2; A cooler 81, one end of the cooler 81 is electrically connected to an end of the normally open switch KA1-1 of the relay away from the resistor R2; Resistor R3, one end of the resistor R3 is electrically connected to one end of the normally open switch KA1-1 of the cooler 81 away from the relay, and the other end of the resistor R3 is grounded.

[0038] Reference Figure 2 and Figure 6 The temperature sensor 911 of the sensing module 91 detects the room temperature and outputs a sensing signal. The comparison module 92 receives the sensing signal. The comparison module 92 compares the voltage value of the received sensing signal with a preset voltage value. The preset voltage value corresponds to the highest room temperature during normal production of the strip blank. If the voltage value corresponding to the sensing signal is greater than the preset voltage value, a start signal is output. The control module 93 receives the start signal and outputs a control signal. The control signal controls the cooler 81 to start cooling. The cooler 81 can be automatically started for cooling when the room temperature is higher than the highest room temperature during normal production of the strip blank.

[0039] The implementation principle of a thermistor manufacturing device and molding process in the embodiment of the present application is as follows: when the room temperature in the workshop changes, the temperature-sensitive fluid 42 exchanges heat with the air through the temperature-sensitive slide 4, and the temperature of the temperature-sensitive fluid 42 changes accordingly and expands and contracts, driving the piston 41 to slide. When the room temperature drops, the piston 41 drives the adjustment rack 43 to slide toward the bottom wall of the temperature-sensing slide 4, and the adjustment rack 43 drives the adjustment gear 2312 to rotate in the direction of increasing the opening and closing degree of the heat medium valve 2311. The opening and closing degree of the heat medium valve 2311 increases, the heat medium flow entering the heating tank 23 increases, and the heating capacity of the spreading roller 2 for the material is enhanced. Conversely, when the room temperature rises, the piston 41 drives the adjustment rack 43 to slide away from the bottom wall of the temperature-sensing slide 4, and the adjustment rack 43 drives the adjustment gear 2312 to rotate in the direction of reducing the opening and closing degree of the heat medium valve 2311. The opening and closing degree of the heat medium valve 2311 decreases, the heat medium flow entering the heating tank 23 decreases, and the heating capacity of the spreading roller 2 for the material is weakened, thereby realizing automatic adjustment of the heat medium supply flow as the room temperature changes.

[0040] The present application also discloses a thermistor manufacturing process, which adopts the following technical solution: S1: Add the raw materials for producing thermistor into the screw extruder; S2: Using a screw extruder, the raw materials are melted and mixed and initially pressed into strip-shaped blanks; S3: The strip-shaped blank is conveyed between two pressing rollers 2, and the pressing rollers 2 further press the strip-shaped blank to obtain a strip-shaped blank with uniform thickness; S4: Use a punching machine to punch out the strip blank into a finished thermistor.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A thermistor manufacturing device, comprising a frame (1), the frame (1) being provided with two pressing rollers (2) for cooperating to press and spread a blank, the frame (1) being provided with a driving mechanism (3) for driving the pressing rollers (2) to rotate, and characterized in that: The spreading roller (2) comprises a heating tank (23) and an abutting cylinder (24) coaxially connected to the outer wall of the heating tank (23); the heating tank (23) is connected to an oil inlet pipe (231) for supplying heat medium and an oil outlet pipe (232) for discharging heat medium; a temperature-sensing slide cylinder (4) is provided on the frame (1); a piston (41) is slidably connected in the temperature-sensing slide cylinder (4); a temperature-sensing fluid (42) that expands and contracts with room temperature is filled between the piston (41) and the bottom wall of the temperature-sensing slide cylinder (4); the piston (41) is remotely connected to the outer wall of the temperature-sensing slide cylinder (4); and the inner wall of the temperature-sensing slide cylinder (4) is connected to the outer wall of the temperature-sensing slide cylinder (4). An adjustment rack (43) is fixedly connected to one end of the temperature-sensing fluid (42). A heat medium valve (2311) for adjusting the heat medium flow rate is provided on the oil inlet pipe (231). An adjustment gear (2312) for adjusting the opening and closing degree of the heat medium valve (2311) is provided on the heat medium valve (2311). The adjustment gear (2312) is meshed with the adjustment rack (43). When the room temperature decreases, the adjustment rack (43) drives the adjustment gear (2312) to rotate in a direction to increase the opening and closing degree of the heat medium valve (2311).

2. A thermistor manufacturing device according to claim 1, characterized in that: The spreading roller (2) is divided into a fixed roller (22) and a movable roller (21) arranged in parallel. The fixed roller (22) is arranged on a frame (1). An adjustment plate (51) is slidably connected to the frame (1). The movable roller (21) is arranged on the adjustment plate (51) and the sliding direction of the adjustment plate (51) is parallel to the length direction of the movable roller (21). An adjustment mechanism (52) for driving the adjustment plate (51) to slide is provided on the frame (1).

3. A thermistor manufacturing device according to claim 2, characterized in that: The adjustment mechanism (52) comprises a threaded rod (521) rotatably connected to the frame (1); the length direction of the threaded rod (521) is parallel to the sliding direction of the adjustment plate (51); the threaded rod (521) is threadedly connected to the adjustment plate (51); the threaded rod (521) is coaxially fixedly connected to a first adjustment bevel gear (5211); an adjustment rod (522) is rotatably connected to the frame (1); and the adjustment rod (522) is coaxially fixedly connected to a second adjustment bevel gear (5221) meshing with the first adjustment bevel gear (5211).

4. The device for manufacturing a thermistor according to claim 1, wherein: The frame (1) is provided with a bellows (6), the bellows (6) is provided with an air outlet (61) for blowing air toward the strip-shaped blank, and the frame (1) is provided with a fan (71) for blowing air into the bellows (6).

5. The device for manufacturing a thermistor according to claim 4, wherein: A refrigeration box (7) is provided on the frame (1), a fan (71) is installed on the refrigeration box (7), an air duct (62) is connected between the air box (6) and the refrigeration box (7), an air duct (62) is provided on the air duct (62) for adjusting the air flow rate, and an air blast gear (6211) is provided on the air blast valve (621) for adjusting the opening and closing degree of the air blast valve (621), the air blast gear (6211) is meshed with the adjustment rack (43), and when the room temperature rises, the adjustment rack (43) drives the air blast gear (6211) to rotate in a direction to increase the opening and closing degree of the air blast valve (621).

6. The device for manufacturing a thermistor according to claim 5, wherein: The frame (1) is provided with a cooling water tank (8), which is connected to a cooling machine (81) for cooling the cooling water through a pipeline. A cooling pipe (82) is connected between the output end of the cooling machine (81) and the cooling water tank (8), and the cooling pipe (82) is passed through the refrigeration box (7).

7. The device for manufacturing a thermistor according to claim 6, wherein: The frame (1) is provided with a detection and control circuit, which includes a sensing module (91), a comparison module (92) and a control module (93): The sensing module (91) includes a temperature sensor (911), which is arranged on the frame (1) and is used to detect the room temperature and output a sensing signal; A comparison module (92), the comparison module (92) is electrically connected to the sensing module (91), and the comparison module (92) is used to receive the sensing signal of the sensing module (91). When the comparison module (92) receives the sensing signal, the voltage value corresponding to the sensing signal is compared with a preset voltage value. The preset voltage value corresponds to the highest room temperature during normal production of the strip blank. If the voltage value of the sensing signal is greater than the preset voltage value, the comparison module (92) outputs a start signal. The control module (93) is electrically connected to the comparison module (92). The control module (93) is used to receive a start signal from the comparison module (92). When the control module (93) receives the start signal, it outputs a control signal. The control signal controls the cooling machine (81) to start refrigeration.

8. A thermistor manufacturing process, comprising a thermistor manufacturing device according to any one of claims 1 to 7, characterized in that: The steps include: S1: Add the raw materials for producing thermistor into the screw extruder; S2: Using a screw extruder, the raw materials are melted and mixed and initially pressed into strip-shaped blanks; S3: conveying the strip blank to between two pressing rollers (2), and the pressing rollers (2) further press the strip blank to obtain a strip blank with uniform thickness; S4: Use a punching machine to punch out the strip blank into a finished thermistor.

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