CN214842303U

CN214842303U - Air-dry device of rubber thermal film

Info

Publication number: CN214842303U
Application number: CN202121301487.9U
Authority: CN
Inventors: 蔡会朝; 苏康康
Original assignee: Hebei Huichao Machinery Fitting Co ltd
Current assignee: Hebei Huichao Machinery Fitting Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-11-23
Anticipated expiration: 2031-06-10

Abstract

The utility model discloses an air drying device for rubber thermal films, which comprises a supporting seat, wherein the supporting seat is connected with a first cooling unit and a second cooling unit, the first cooling unit and the second cooling unit are respectively communicated with a cold air source, the first cooling unit is connected with a driving motor in a transmission way, the driving motor is electrically connected with a PLC controller, and the thermal films are movably connected between the first cooling unit and the second cooling unit; the first cooling unit comprises a support, a plurality of hollow rotating rollers, a plurality of rotary joints and a cold air pipe, the support is vertically connected with a supporting seat, each rotating roller rotates to connect the support, each rotating roller is arranged at intervals along the length direction of the support, a thermal film is arranged on the upper surface of each rotating roller, each rotating roller is connected with a driving motor in a transmission mode, one end of each rotating roller is connected with the rotary joint, each rotary joint is connected with the cold air pipe, and the cold air pipe is communicated with a cold air source. The utility model discloses a PLC controller adjusts the conveying speed of hot film, through the extension cooling passageway, makes hot film reach and air-dries the cooling completely, is applicable to rubber processing.

Description

Air-dry device of rubber thermal film

Technical Field

The utility model belongs to the technical field of the rubber processing equipment, concretely relates to air-dry device of rubber heat film.

Background

The tire is generally mounted on a metal hub, and can support a vehicle body, buffer external impact, realize contact with a road surface and ensure the driving performance of a vehicle. The tire bears various deformations, loads, forces and high and low temperature effects during running, and therefore, the tire must have high bearing performance, traction performance and buffering performance. At the same time, high abrasion resistance and flexibility resistance, and low rolling resistance and heat build-up are also required. In the production of rubber tires, after the banburying process of raw rubber is finished, the air drying and cooling of the hot rubber sheet are indispensable links.

Like chinese utility model patent grant publication No. CN210820374U, a bassinet rubber tire hot film air-dries compression roller device, which comprises a housin, the casing is close to one side fixedly connected with top air-cooler at top, the equal fixedly connected with compression roller mechanism in both sides of casing, the casing is close to one side fixedly connected with deflector roll of compression roller mechanism, the casing is close to one side fixedly connected with bottom air-cooler of deflector roll. This bassinet rubber tire hot film air-dries compression roller device, through setting up the dancer rools body, start the water-cooling box of dancer rools body one side during the use, can carry out the water-cooling when the hot film passes through from the surface of dancer rools body, two air outlets of top air-cooler can be to having the better air-dry work of carrying on of inclination's hot film, two bottom air-coolers also can carry out the forced air cooling to a hot film bottom side, the air-drying efficiency that can effectual improvement the device of the water-cooling of cooperation dancer rools body self.

For example, the Chinese patent publication No. CN109648735B discloses a rubber tire hot film air drying compression roller device, which comprises a base, a feeding gold hook, an adjusting structure, a guiding structure, an air inlet structure, an unloading structure and a hanging structure; be connected with the hollow peg in three inside that is the triangle-shaped structure through the second bearing rotation in the inside of fixed cover, and three peg is and is continuity S-shaped structure, can effectively reduce the area of contact of peg and rubber tire heat film, reach better weather effect, be equipped with a plurality ofly on the peg and be 45 gas pockets of contained angle with fixed cover, when can making rubber tire heat film and peg contact, can not influence the gas pocket and blow to rubber tire heat film, be a plurality of blades of annular array distribution in the outside of peg, the blade can take place slight rotation when the air current gets into the air flue, it rotates to drive the peg, can make the rubber tire heat film on the peg take place vibrations, thereby reach better weather effect.

Because the rubber has poor thermal conductivity and different thicknesses, when the rubber thermal film is thinner, the thermal film can achieve the air drying and cooling effects; however, when the rubber thermo-film is thick, the effect of air-drying and cooling cannot be achieved due to the conduction of heat inside the rubber thermo-film.

SUMMERY OF THE UTILITY MODEL

The utility model provides an above technique is not enough, provides a conveying speed is adjustable, prolongs the air-dry device of the hot film of rubber of cooling passageway.

In order to achieve the above object, the utility model adopts the following technical scheme:

the air drying device for the rubber thermal films comprises a supporting seat, wherein the supporting seat is connected with a first cooling unit and a second cooling unit, the first cooling unit and the second cooling unit are respectively communicated with a cold air source, the first cooling unit is in transmission connection with a driving motor, the driving motor is electrically connected with a PLC (programmable logic controller), and the thermal films are movably connected between the first cooling unit and the second cooling unit; the first cooling unit comprises a support, a plurality of hollow rotating rollers, a plurality of rotary joints and a cold air pipe, the support is vertically connected with the supporting seat, each rotating roller is rotatably connected with the support and arranged at intervals along the length direction of the support, the upper surface of each rotating roller is provided with the thermal film, each rotating roller is in transmission connection with the driving motor, one end of each rotating roller is respectively connected with the rotary joint through a hose, each rotary joint is connected with the cold air pipe through a hose, and the cold air pipe is communicated with the cold air source; the second cooling unit comprises a connecting pipe, an air conditioning branch pipe and a plurality of sprayers, the connecting pipe is communicated with the air conditioning branch pipe, the air conditioning branch pipe is connected with the supporting seat, the air conditioning branch pipe is communicated with the sprayers, the sprayers are arranged along the length direction of the air conditioning branch pipe at intervals, and the air spraying directions of the sprayers face towards the first cooling unit.

And a spiral blocking sheet is arranged inside each rotating roller as a limitation, and the spiral blocking sheet extends from one end of the rotating roller to the other end of the rotating roller.

As another limitation, each rotating roller is connected with a first electric regulating valve near the end of the cold air pipe, the first electric regulating valve is positioned between the cold air pipe and the rotary joint, and each first electric regulating valve is electrically connected with a PLC controller.

As another limitation, each rotating roller is far away from the end of the cold air pipe and is respectively connected with the rotating joint through a hose, each rotating joint is connected with a corresponding temperature sensor through a hose, each temperature sensor is connected with the supporting seat, and each temperature sensor is respectively and electrically connected with a PLC controller.

As another limitation, the number of the connecting pipes is several, each connecting pipe is arranged at intervals along the length direction of the cold air pipe, each connecting pipe is respectively connected with the corresponding cold air branch pipe, and the cold air branch pipes extend from one end of the rotating roller to the other end.

As another limitation, each of the connecting pipes is connected to a second electric control valve, and each of the second electric control valves is electrically connected to the PLC controller.

As another definition, each of the cold gas manifolds communicates with a gas pressure sensor remote from the connecting tube end, the gas pressure sensor being electrically connected to the PIC controller.

As another limitation, each spray head is provided with a plurality of air injection holes, and the diameter of each air injection hole is 0.1-0.5 mm.

As another definition, each of the gas injection holes has a diameter of 0.2 to 0.3 mm.

Compared with the prior art, the utility model, the technological progress who gains lies in:

the utility model discloses a first cooling unit and second cooling unit of supporting seat connection, first cooling unit and second cooling unit communicate the cold air source respectively, first cooling unit transmission is connected driving motor, driving motor electricity is connected the PLC controller, swing joint heat film between first cooling unit and the second cooling unit, this kind of setting can be according to the thickness of heat film, adjust the speed of carrying the heat film through the rotational speed that the PLC controller adjusted driving motor, so that the heat film reaches the air-dry cooling; the first cooling unit comprises a support, a plurality of hollow rotating rollers, a plurality of rotary joints and a cold air pipe, the support is vertically connected with a supporting seat, each rotating roller is rotatably connected with the support, each rotating roller is arranged at intervals along the length direction of the support, a thermal film is arranged on the upper surface of each rotating roller, each rotating roller is in transmission connection with a driving motor, one end of each rotating roller is connected with the rotary joint through a hose, each rotary joint is connected with the cold air pipe through a hose, and the cold air pipe is communicated with a cold air source; the second cooling unit comprises a connecting pipe, a cold air branch pipe and a plurality of spray heads, the connecting pipe is communicated with the cold air pipe, the connecting pipe is communicated with the cold air branch pipe, the cold air branch pipe is connected with the supporting seat, the cold air branch pipe is communicated with the spray heads, the spray heads are arranged at intervals along the length direction of the cold air branch pipe, the air injection direction of each spray head faces the first cooling unit, the cooling time of the hot film is prolonged, and the hot film is completely air-dried and cooled; to sum up, the utility model discloses a PLC controller adjusts the conveying speed of hot film, through extension cooling channel, makes hot film reach and air-dries the cooling completely, is applicable to rubber processing.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of an air drying device according to an embodiment of the present invention;

FIG. 3 is a frame diagram of an embodiment of the present invention;

FIG. 4 is a schematic structural view of a rotating roller according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a spiral barrier sheet according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a nozzle according to an embodiment of the present invention;

fig. 7 is another schematic structural diagram of the second cooling unit according to the embodiment of the present invention.

Labeling components: 1-a supporting seat, 2-a first cooling unit, 201-a support, 202-a rotating roller, 203-a rotating joint, 204-a cold air pipe, 205-a spiral separation sheet, 3-a second cooling unit, 301-a connecting pipe, 302-a cold air branch pipe, 303-a spray head, 304-an air jet hole, 4-a cold air source, 5-a driving motor, 6-a PLC (programmable logic controller), 7-a hot film, 8-a first electric regulating valve, 9-a temperature sensor, 10-a gas pressure sensor and 11-a second electric regulating valve.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the invention.

Embodiment a device for air-drying rubber thermal film

The embodiment discloses an air drying device for rubber hot films, as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the air drying device comprises a supporting seat 1, the supporting seat 1 is made of metal through welding, the supporting seat 1 is fixedly connected with a first cooling unit 2 through a welding mode, the supporting seat 1 can be further connected with the first cooling unit 2 through a bolt, the first cooling unit 2 comprises a support 201, a plurality of hollow rotating rollers 202, a plurality of rotary joints 203 and a cold air pipe 204, the support 201 is fixedly connected with the supporting seat 1 through a welding mode, the support 201 is vertically connected with the supporting seat 1, the upper end of the support 201 is rotatably connected with the rotating rollers 202 through a bearing and a bearing seat, one end of the rotating rollers 202 is connected with a driven gear through a key, the inner side of the rotating rollers 202 is fixedly connected with a spiral blocking piece 205 through a welding mode, the spiral blocking piece 205 extends from one end of the rotating rollers 202 to the other end, a spiral channel is formed inside the rotating rollers 202, the arrangement can prolong the flowing time of the cold source in the rotating roller 202, so as to achieve the full utilization of the cold source, save resources and improve the utilization rate; the plurality of rotating rollers 202 are arranged at intervals along the length direction of the support 201, preferably, driven gears connected with the rotating rollers 202 are located on the same side of the support 201, each driven gear is connected with a driving gear through chain transmission, the driving gears are connected with an output shaft of a driving motor 5 through keys, the driving motor 2 is connected with the support 201 through bolts, preferably, the driving motor 5 is located below the rotating rollers 202, the driving motors 5 are electrically connected with the PLC 6 through electric wires, the PLC 6 is electrically connected with a power supply, and the rotating speed of the driving motors 5, namely the rotating speed of the rotating rollers 202, can be adjusted through the PLC 6; the upper surface of the rotating roller 202 is paved with a hot film 7 to be cooled, the rotating roller 202 rotates to convey the hot film 7 from one end of the supporting base 1 to the other end, the next process is carried out, each rotating roller 202 is far away from the driven gear end and is respectively connected with a corresponding rotating joint 203 through a hose, the other end of each rotating joint 203 is connected with a cold air pipe 204 through a hose, preferably, the mounting joint 203 is connected with the supporting base 1 through a connecting frame, the air inlet end of the cold air pipe 204 is communicated with a cold air source 4, the arrangement prolongs a cooling channel, and the hot film 7 can be fully cooled; the second cooling unit 3 comprises a connecting pipe 301, a cold air branch pipe 302 and a plurality of spray heads 303, wherein one end of the connecting pipe 301 is communicated with the cold air pipe 204, the other end of the connecting pipe 301 is connected with the cold air branch pipe 302, preferably, the cold air branch pipe 302 is arranged along the length direction of the support 201, namely, the cold air branch pipe 302 extends from one end to the other end of the support 201, the end of the cold air branch pipe 302 far away from the connecting pipe 301 is connected with the support base 1 through bolts, and the arrangement increases the stability of the cold air branch pipe 302; the cold air branch pipe 302 is communicated with the spray heads 303, the spray heads 303 can be connected with the cold air branch pipe 302 through threads, the spray heads 303 can be connected with the cold air branch pipe 302 through a hot melting mode, the spray heads 303 are arranged at intervals along the length direction of the cold air branch pipe 302, the air injection direction of each spray head 303 faces the first cooling unit 2, the arrangement enables the upper surface of the thermal film 7 to achieve the air drying and cooling effects under the cold air sprayed by the spray heads 303, and the arrangement of the spray heads 303 also prolongs the cooling channel, so that the thicker thermal film 7 can be fully dried and cooled; when the hot film drying machine works, firstly, the rotating speed of the driving motor 5 is set through the PLC 6 according to the thickness of the hot film 7 to be dried and cooled and the length of the bracket 201, namely, when the hot film 7 is thinner, the rotating speed of the driving motor 5 can be faster, when the hot film 7 is thicker, the rotating speed of the driving motor 5 can be slower, then, the driving motor 5 is started, the driving motor 5 drives the rotating roller 202 to rotate, the rotating roller 202 rotates to enable the hot film 7 to move towards the other end at one end of the bracket 201, meanwhile, the cold air source 4 is started, cold air in the cold air source 4 respectively enters the rotating roller 202 and the cold air branch pipe 302 through the cold air pipe 204 to enter the rotating roller 202 to reduce the temperature of the rotating roller 202, a temperature difference is formed between the rotating roller 202 and the hot film 7, heat in the hot film 7 is transferred to the cold air through the rotating roller 202, and the cold air absorbed by heat is discharged out of the rotating roller 202 from the other end of the rotating roller 202, the temperature of the lower surface of the hot film 7 is reduced, meanwhile, the cold air entering the cold air branch pipe 302 is sprayed out through the spray head 303, the sprayed cold air covers the upper surface of the hot film 7, the temperature of the upper surface of the hot film 7 is reduced, when the hot film 7 is thicker, after the temperature of the surface of the hot film 7 is reduced, the heat in the hot film 7 is transferred to the surface of the hot film 7, the temperature of the hot film 7 is reduced again through the cold air sprayed out by the rotating roller 202 and the spray head 303 after the heat in the hot film 7 is transferred to the surface of the hot film 7, so that the hot film 7 is fully air-dried and cooled; the advantage of this embodiment lies in that, adopts above-mentioned setting, can be applicable to the thermal film 7 air-dry air conditioning of different thickness, has improved application scope, has improved equipment utilization.

A preferred structure of the turning rollers 202 of this embodiment is, as shown in fig. 1, fig. 2, and fig. 3, each turning roller 202 is connected to a regulating valve near the cold air pipe 204, the regulating valve may be a manual regulating valve, and preferably is an electric regulating valve, each turning roller 202 is connected to a first electric regulating valve 8 near the cold air pipe 204, the first electric regulating valve 8 is located between the cold air pipe 204 and a rotary joint 203, each first electric regulating valve 8 is electrically connected to the PLC controller 6 through an electric wire, each turning roller 202 is connected to the rotary joint 203 through a hose, each rotary joint 203 is connected to a corresponding temperature sensor 9 through a hose, each temperature sensor 9 is used for measuring the temperature of cold air after passing through the corresponding turning roller 202, each temperature sensor 9 is connected to the supporting base 1 through a connecting bracket, such an arrangement increases the stability of the temperature sensor 9, the service life of the rotary joint 203 is prolonged, each temperature sensor 9 is electrically connected with the PLC controller 6, the arrangement can enable the PLC controller 6 to receive signals transmitted back by the temperature sensors 9, the PLC controller 6 sends corresponding signals to the corresponding first electric regulating valves 8 by analyzing the received temperature signals, so that the cold air flow of the first electric regulating valves 8 is increased or decreased, that is, when the temperature sensors 9 measure that the temperature is low, the PLC controller 6 sends cold air flow decreasing signals to the first electric regulating valves 8, so that the cold air flow of the first electric regulating valves 8 is decreased; when the temperature sensor 9 measures that the temperature is high, the PLC 6 sends a cold air flow increasing signal to the first electric regulating valve 8, so that the cold air flow of the first electric regulating valve 8 is increased; this kind of setting both can make thermal film 7 reach complete cooling, can not cause the waste of air conditioning again, has improved resource utilization, and the advantage of this embodiment lies in from this embodiment adopts above-mentioned setting, has improved resource utilization.

A preferable structure of the second cooling unit 3 of this embodiment is, as shown in fig. 1, 6, and 7, that a plurality of connection pipes 301 are provided at intervals along the length direction of the cold air pipe 204, each connection pipe 301 is connected to a corresponding cold air branch pipe 302, each cold air branch pipe 302 extends from one end of the rotating roller 202 to the other end, and this arrangement increases the air drying effect of the thermal film 7, reduces the time, and improves the working efficiency; each connecting pipe 301 is connected with a corresponding regulating valve, the regulating valves can be manually regulated, preferably the regulating valves are electric regulating valves, each connecting pipe 301 is respectively connected with a corresponding second electric regulating valve 11, each second electric regulating valve 11 is respectively and electrically connected with a PLC (programmable logic controller) 6 through an electric wire, the end, far away from the connecting pipe 301, of each cold air branch pipe 302 is communicated with a gas pressure sensor 10, each gas pressure sensor 10 is respectively and electrically connected with the PLC 6, and the arrangement can monitor the pressure in the cold air branch pipes 302 at any time; each spray head 303 is provided with a plurality of gas injection holes 304, the diameter of each gas injection hole 304 is 0.1-0.5mm, preferably the diameter of each gas injection hole 304 is 0.2-0.3mm, the arrangement is that the gas pressure sensor 10 can monitor the pressure in the cold air branch pipe 302 at any time, cold air is sprayed out from the spray head 303, when the gas pressure sensor 10 monitors that the pressure in the cold air branch pipe 302 is reduced, the gas pressure sensor 10 transmits a signal to the PLC controller 6, the PLC controller 6 sends a signal to the second electric regulating valve 11, the cold air flow rate is increased by the second electric regulating valve 11 to keep the pressure in the cold air branch pipe 302, when the pressure in the cold air branch pipe 302 is increased, the gas pressure sensor 10 transmits a signal to the PLC controller 6, the PLC controller 6 sends a signal to the second electric regulating valve 10 to reduce the flow rate by the second electric regulating valve 10, the arrangement can keep the cold air branch pipe 302 in a balance range, the cold air is completely covered on the upper surface of the thermal film 7, so that the complete air drying and cooling of the thermal film 7 are achieved, and the air drying efficiency is improved; the advantage of this embodiment is that with the above arrangement, the air drying cooling efficiency is improved.

The embodiment of the utility model provides a theory of operation as follows:

when the cooling device works, firstly, according to the thickness of a hot film 7 to be air-dried and cooled and the length of a cooling channel, the rotating speed of the driving motor 5 is set through the PLC 6, the temperature threshold value transmitted back by the temperature sensor 9 and the pressure threshold value of the gas pressure sensor 10 are set through the PLC 6, then, the driving motor 5 is started, the driving motor 5 drives the rotating roller 202 to rotate, the rotating roller 202 rotates to enable the hot film 7 to move from one end of the bracket 201 to the other end, meanwhile, the cold gas source 4 is started, cold gas in the cold gas source 4 respectively enters the rotating roller 202 and the cold gas branch pipe 302 through the cold gas pipe 204, the cold gas enters the rotating roller 202 to reduce the temperature of the rotating roller 202, a temperature difference is formed between the rotating roller 202 and the hot film 7, heat in the hot film 7 is transmitted to the cold gas through the rotating roller 202, and the cold gas absorbing the heat is discharged out of the rotating roller 202 from the other end of the rotating roller 202, meanwhile, the cold air entering the cold air branch pipe 302 is sprayed out through the spray nozzle 303, the sprayed cold air covers the upper surface of the hot film 7, the cold air absorbs heat on the upper surface of the hot film 7 to achieve air-drying cooling of the hot film 7, when the hot film 7 is thicker, the temperature on the surface of the hot film 7 is reduced, the heat inside the hot film 7 is transferred to the surface of the hot film 7, and then the cold air sprayed out through the rotating roller 202 and the spray nozzle 303 reduces the temperature of the hot film 7 again to enable the thicker hot film 7 to achieve complete air-drying cooling.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the protection of the claims of the present invention.

Claims

1. The utility model provides an air-dry device of rubber heat film which characterized in that: the cooling device comprises a supporting seat (1), wherein the supporting seat (1) is connected with a first cooling unit (2) and a second cooling unit (3), the first cooling unit (2) and the second cooling unit (3) are respectively communicated with a cold air source (4), the first cooling unit (2) is in transmission connection with a driving motor (5), the driving motor (5) is electrically connected with a PLC (programmable logic controller) (6), and a hot rubber sheet (7) is movably connected between the first cooling unit (2) and the second cooling unit (3);

the first cooling unit (2) comprises a support (201), a plurality of hollow rotating rollers (202), a plurality of rotary joints (203) and a cold air pipe (204), the support (201) is vertically connected with the support base (1), each rotating roller (202) is rotatably connected with the support (201), each rotating roller (202) is arranged at intervals along the length direction of the support (201), the upper surface of each rotating roller (202) is provided with the thermal film (7), each rotating roller (202) is in transmission connection with the driving motor (5), one end of each rotating roller (202) is respectively connected with the rotary joints (203) through hoses, each rotary joint (203) is connected with the cold air pipe (204) through a hose, and the cold air pipe (204) is communicated with the cold air source (4);

second cooling unit (3) are including connecting pipe (301), air conditioning branch pipe (302) and a plurality of shower nozzle (303), connecting pipe (301) intercommunication air conditioning pipe (204), connecting pipe (301) intercommunication air conditioning branch pipe (302), air conditioning branch pipe (302) are connected supporting seat (1), air conditioning branch pipe (302) intercommunication shower nozzle (303), each shower nozzle (303) are followed the length direction interval of air conditioning branch pipe (302) sets up, each the jet-propelled direction orientation of shower nozzle (303) first cooling unit (2).

2. The air drying device for rubber thermo-chromatic sheets according to claim 1, characterized in that: spiral blocking pieces (205) are arranged inside the rotating rollers (202), and the spiral blocking pieces (205) extend from one end of each rotating roller (202) to the other end.

3. The air drying device for rubber thermo-chromatic sheets according to claim 1, characterized in that: the ends, close to the cold air pipe (204), of the rotating rollers (202) are respectively connected with a first electric regulating valve (8), the first electric regulating valve (8) is located between the cold air pipe (204) and the rotary joint (203), and the first electric regulating valves (8) are respectively and electrically connected with a PLC (programmable logic controller) (6).

4. The air drying device for rubber thermal film according to claim 3, wherein: the ends, far away from the cold air pipe (204), of the rotating rollers (202) are respectively connected with the rotating joints (203) through hoses, the rotating joints (203) are connected with corresponding temperature sensors (9) through hoses, the temperature sensors (9) are connected with the supporting seat (1), and the temperature sensors (9) are respectively and electrically connected with a PLC (programmable logic controller) (6).

5. The air drying device for rubber thermo-chromatic sheets according to claim 1, characterized in that: the number of the connecting pipes (301) is multiple, each connecting pipe (301) is arranged at intervals along the length direction of the cold air pipe (204), each connecting pipe (301) is connected with the corresponding cold air branch pipe (302), and the cold air branch pipes (302) extend from one end of the rotating roller (202) to the other end.

6. The air drying device for rubber thermal film according to claim 5, wherein: each connecting pipe (301) is respectively connected with a second electric regulating valve (11), and each second electric regulating valve (11) is respectively and electrically connected with the PLC (6).

7. The air drying device for rubber thermal film according to claim 6, wherein: each cold air branch pipe (302) is far away from the end of the connecting pipe (301) and is communicated with a gas pressure sensor (10), and the gas pressure sensor (10) is electrically connected with a PLC (6).

8. The air drying device for rubber thermal film according to claim 7, wherein: each spray head (303) is provided with a plurality of air injection holes (304), and the diameter of each air injection hole (304) is 0.1-0.5 mm.

9. The air drying device for rubber thermo-chromatic sheets according to claim 8, characterized in that: the diameter of each air injection hole (304) is 0.2-0.3 mm.