A cooling device for hot melt adhesive film production

Abstract

The invention discloses a cooling device for hot melt adhesive film production, which relates to the technical field of hot melt adhesive film production, and comprises a base and two guide rollers installed on the top of the base, and also comprises: a bracket; an air cooling mechanism for cooling the hot melt adhesive film; a displacement mechanism for driving the air cooling mechanism to move; an automatic switching mechanism for switching the direction in which the air cooling mechanism blows air to the hot melt adhesive film; an angle adjustment mechanism for adjusting the angle at which the air cooling mechanism blows air to the hot melt adhesive film according to the thickness of the hot melt adhesive film; the cooling device for hot melt adhesive film production drives rows of air nozzles to move in an inclined shape while cooling the hot melt adhesive film, so that hot air on the surface of the hot melt adhesive film can be blown forward to accelerate the discharge of heat, thereby avoiding the problem that hot air is easily discharged to the surrounding area when the hot melt adhesive film is blown directly from top to bottom, and the inclined wind force can stretch the hot melt adhesive film, thereby reducing the wrinkles generated by the hot melt adhesive film during the cooling process.

Description

Technical Field

[0001] The invention relates to the technical field of hot melt adhesive film production, and in particular to a cooling device for hot melt adhesive film production. Background Art

[0002] Hot melt adhesive film is a film product with or without release paper. Hot melt adhesive film needs to be cooled during production, and air cooling is a commonly used cooling method.

[0003] The patent with publication number CN220808192U discloses a hot melt adhesive film processing device that is convenient for cooling the hot melt adhesive film, including: a panel, a connecting frame and an air pump, the top surface of the panel is welded with a shell, a box body is welded inside the shell, and a roller shaft three is sleeved in the box body, and a roller shaft one is sleeved in the shell; a fixing pipe is installed on the top surface of the inner wall of the shell, and an air pump is installed on the top surface of the outer surface of the shell, and an air inlet pipe one and an air inlet pipe two are arranged on the air pump; a base is welded to the bottom surface of the panel through a support rod, and a driving motor is installed on the top surface of the base, a screw rod is welded on the output shaft of the driving motor, and a connecting frame is installed on the screw rod through a thread, a mounting frame is welded on the connecting frame through a partition, and a roller shaft two is sleeved in the mounting frame;

[0004] The above-mentioned related technology has the following defects: it adopts a method of direct blowing from top to bottom to cool the hot melt adhesive film. This method will cause the hot air on the surface of the hot melt adhesive film to collide with each other when discharged, resulting in discharge obstruction, affecting the cooling effect of the hot melt adhesive film. In addition, multiple exhaust pipes are used to blow air to cool the hot melt adhesive film, which makes the wind direction and wind force inconsistent, which can easily lead to large-scale wrinkles on the surface of the hot melt adhesive film. Summary of the invention

[0005] The object of the present invention is to provide a cooling device for hot melt adhesive film production to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solution: a cooling device for hot melt adhesive film production, comprising a base and two guide rollers installed on the top of the base, and also comprising:

[0007] a bracket mounted on the top of the base;

[0008] An air cooling mechanism, which is installed on the bracket and is used to cool the hot melt adhesive film;

[0009] A displacement mechanism, which is mounted on the bracket and is used to drive the air cooling mechanism to move;

[0010] An automatic switching mechanism, which is mounted on the bracket and is used to switch the direction in which the air cooling mechanism blows air to the hot melt adhesive film;

[0011] An angle adjustment mechanism, which is installed on the bracket and is used to adjust the blowing angle of the air cooling mechanism on the hot melt adhesive film according to the thickness of the hot melt adhesive film;

[0012] The fixed-point compensation mechanism is installed on the bracket and is used to monitor the temperature of the hot-melt adhesive film after cooling treatment and to perform fixed-point cooling treatment on the local hot-melt adhesive film that does not meet the cooling requirements.

[0013] Further, the air cooling mechanism comprises a main flow pipe installed at the top of the bracket, an air inlet pipe installed at the top of the main flow pipe and a plurality of first branch pipes installed at the bottom of the main flow pipe;

[0014] The bottom end of the first shunt pipe is equipped with an adjusting pipe, and the bottom end of the adjusting pipe is equipped with an air nozzle;

[0015] The first shunt pipe is a hose.

[0016] Further, the displacement mechanism includes a screw rod rotatably connected to the inside of the bracket, a support block arranged outside the plurality of adjustment tubes, and a motor installed on the outer wall of the bracket;

[0017] The output end of the motor is fixedly connected to one end of the screw rod;

[0018] A first guide rod is also fixedly connected to the interior of the bracket, and the first guide rod and the screw rod are arranged parallel to each other;

[0019] Two connecting blocks are fixedly connected to the top of the supporting block, one of the connecting blocks is screwed on the outside of the screw rod, and the other connecting block is slidably sleeved on the outside of the first guide rod.

[0020] Furthermore, the automatic switching mechanism is provided in plurality, and the plurality of automatic switching mechanisms are respectively connected to a plurality of regulating tubes;

[0021] The automatic switching mechanism includes a movable groove provided inside the support block, a driven shaft rotatably connected to the inner wall of the movable groove, a fixed seat fixed to the inner wall of one side of the movable groove, a transmission shaft rotatably connected inside the fixed seat, and a linkage assembly for driving the transmission shaft to rotate and self-lock;

[0022] The driven shaft and the transmission shaft are both fixedly sleeved with bevel gears on their exteriors, and the two bevel gears are meshed with each other.

[0023] Further, the linkage assembly includes a worm rotatably connected to the inside of the movable groove, a worm wheel fixedly sleeved on the outside of the transmission shaft, and two one-way gears installed on the outside of the worm;

[0024] The worm is meshed with the worm wheel;

[0025] The one-way gear is connected with the angle adjustment mechanism.

[0026] Furthermore, two angle adjustment mechanisms are provided, and the two angle adjustment mechanisms are respectively arranged on the inner walls on both sides of the bracket;

[0027] The angle adjustment mechanism includes a plurality of transmission components and a lifting component for driving the plurality of transmission components to rise and fall synchronously;

[0028] The plurality of transmission assemblies are respectively connected to the one-way gears in the plurality of automatic switching mechanisms;

[0029] The transmission assembly includes a plurality of racks arranged above the base along the height direction of the bracket, and the lengths of the plurality of racks increase sequentially from bottom to top;

[0030] The rack matches with the one-way gear.

[0031] Further, the lifting assembly includes a cylinder mounted on the top of the bracket and a connecting frame fixed to the extended end of the cylinder;

[0032] The connecting frame is fixedly connected to a plurality of racks respectively;

[0033] The bottom of the bracket is also fixedly connected with two second guide rods, and the connecting frame is also slidably sleeved on the outside of the two second guide rods.

[0034] Furthermore, the front and rear parts of the movable slot are both provided with through slots, and the through slots are used for the rack to pass through.

[0035] Further, the fixed-point compensation mechanism includes a second shunt pipe installed at one end of the main pipe and a plurality of compensation pipes installed on the second shunt pipe;

[0036] The plurality of compensation tubes are all L-shaped structures, and solenoid valves are installed on the plurality of compensation tubes.

[0037] Furthermore, a fixing frame is installed on the outer wall of one side of the bracket, and a plurality of temperature sensors are installed on the top of the fixing frame along the length direction thereof, and the temperature sensors are used to monitor the temperature of the hot melt adhesive film after the cooling treatment.

[0038] Compared with the prior art, the cooling device for hot melt adhesive film production provided by the present invention has the following beneficial effects:

[0039] 1. By driving the rows of nozzles to move in an inclined manner while cooling the hot melt adhesive film, the hot air on the surface of the hot melt adhesive film can be blown forward to accelerate the discharge of heat, avoiding the problem that the hot air is easily discharged to the surrounding area when the hot melt adhesive film is blown directly from top to bottom. In addition, the inclined wind force can stretch the hot melt adhesive film, reducing the wrinkles generated by the hot melt adhesive film during the cooling process;

[0040] 2. The temperature sensor is used to monitor the temperature of the hot melt adhesive film after cooling. When the temperature sensor of a region detects that the temperature of the region has not cooled to the set value, the hot melt adhesive film reaching the higher temperature region below it is cooled through the corresponding compensation tube, thereby achieving the effect of fully cooling the hot melt adhesive film and avoiding the problem of insufficient cooling of the hot melt adhesive film.

[0041] 3. When cooling hot-melt adhesive films of different thicknesses, the worm rotation angle is adjusted by adjusting the meshing of racks of different lengths with the one-way gear. The larger the worm rotation angle, the larger the inclination angle of the adjustment tube and the air nozzle, and the smaller the tensile force on the hot-melt adhesive film, which is suitable for cooling thinner hot-melt adhesive films. The smaller the worm rotation angle, the smaller the inclination angle of the adjustment tube and the air nozzle, and the larger the tensile force on the hot-melt adhesive film, which is suitable for cooling thicker hot-melt adhesive films. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0043] Figure 1 It is a schematic diagram of the overall structure of the present invention from a first viewing angle;

[0044] Figure 2 It is a schematic diagram of the overall structure of the present invention from a second viewing angle;

[0045] Figure 3 It is a schematic diagram of the structures of the air cooling mechanism, displacement mechanism, automatic switching mechanism and angle adjustment mechanism of the present invention;

[0046] Figure 4 It is a right view of the displacement mechanism, support block and rack structure of the present invention;

[0047] Figure 5 It is a schematic diagram of the structure of the automatic switching mechanism of the present invention.

[0048] Description of reference numerals:

[0049] 1. Base; 2. Guide roller; 3. Bracket; 4. Main flow pipe; 5. Air inlet pipe; 6. First shunt pipe; 7. Adjustment pipe; 8. Air nozzle; 9. Screw; 10. Support block; 11. First guide rod; 12. Connecting block; 13. Motor; 14. Movable groove; 15. Driven shaft; 16. Fixed seat; 17. Transmission shaft; 18. Bevel gear; 19. Worm; 20. Worm wheel; 21. One-way gear; 22. Rack; 23. Cylinder; 24. Connecting frame; 25. Second guide rod; 26. Through groove; 27. Second shunt pipe; 28. Compensation pipe; 29. ​​Solenoid valve; 30. Fixed frame; 31. Temperature sensor. DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0051] Example: See Figure 1 - Figure 5 A cooling device for hot melt adhesive film production includes a base 1 and two guide rollers 2 mounted on the top of the base 1, wherein the height of the guide rollers 2 can be manually adjusted, and the guide rollers 2 are used to determine the conveying track of the hot melt adhesive film, and further includes:

[0052] A bracket 3, which is mounted on the top of the base 1;

[0053] The air cooling mechanism is installed on the bracket 3 and is used to cool the hot melt adhesive film. The air cooling mechanism includes a main flow pipe 4 installed on the top of the bracket 3, an air inlet pipe 5 installed on the top of the main flow pipe 4, and a plurality of first branch pipes 6 installed at the bottom of the main flow pipe 4; an adjusting pipe 7 is installed at the bottom end of the first branch pipe 6, and an air nozzle 8 is installed at the bottom end of the adjusting pipe 7; the first branch pipe 6 is a hose;

[0054] Cold air is continuously provided to the air inlet pipe 5 through the cold air supply device, and then the cold air is respectively transported to each first branch pipe 6 through the main pipe 4, and finally blown out through the regulating pipe 7 and the air nozzle 8. The air nozzle 8 blows out flat cold air.

[0055] A displacement mechanism is installed on the bracket 3 and is used to drive the air cooling mechanism to move. The displacement mechanism includes a screw 9 rotatably connected to the inside of the bracket 3, a support block 10 arranged outside the plurality of adjustment tubes 7, and a motor 13 installed on the outer wall of the bracket 3; the output end of the motor 13 is fixedly connected to one end of the screw 9; a first guide rod 11 is also fixedly connected to the inside of the bracket 3, and the first guide rod 11 and the screw 9 are arranged parallel to each other; two connecting blocks 12 are fixedly connected to the top of the support block 10, one of which is screwed to the outside of the screw 9, and the other is slidably sleeved on the outside of the first guide rod 11;

[0056] When the hot melt adhesive film in the moving process is cooled, the motor 13 is controlled to drive the screw rod 9 to rotate forward, drive the connecting block 12 to move forward, and then drive the adjusting tubes 7 and the air nozzles 8 to move forward synchronously through the supporting block 10. In this process, the air nozzle 8 continuously blows cold air to cool the hot melt adhesive film moving to the left.

[0057] The motor 13 is controlled to drive the screw rod 9 to reverse, drive the connecting block 12 to move backward, and then drive each adjustment tube 7 and each air nozzle 8 to move backward synchronously through the support block 10. In this process, the air nozzle 8 continuously blows cold air to cool the hot melt adhesive film moving to the left;

[0058] In this cycle, the hot melt adhesive film is continuously cooled while moving.

[0059] The automatic switching mechanism is installed on the bracket 3 and is used to switch the direction of the air cooling mechanism blowing air to the hot melt adhesive film. The automatic switching mechanism is provided with multiple automatic switching mechanisms, and the multiple automatic switching mechanisms are respectively connected to multiple adjustment tubes 7; the automatic switching mechanism includes a movable groove 14 opened inside the support block 10, a driven shaft 15 rotatably connected to the inner wall of the movable groove 14, a fixed seat 16 fixed to the inner wall of one side of the movable groove 14, a transmission shaft 17 rotatably connected inside the fixed seat 16, and a linkage component for driving the transmission shaft 17 to rotate and self-lock; the outsides of the driven shaft 15 and the transmission shaft 17 are fixedly sleeved with bevel gears 18, and the two bevel gears 18 are meshed with each other. The linkage component includes a worm 1 rotatably connected to the inside of the movable groove 14. 9. A worm wheel 20 fixedly sleeved on the outside of the transmission shaft 17 and two one-way gears 21 installed on the outside of the worm 19, when one of the one-way gears 21 rotates clockwise, the worm 19 rotates accordingly, when one of the one-way gears 21 rotates counterclockwise, the worm 19 does not rotate accordingly, and one of the one-way gears 21 and the rack 22 at the rear are located on the same meshing transmission path; when the other one-way gear 21 rotates clockwise, the worm 19 does not rotate accordingly; when the other one-way gear 21 rotates counterclockwise, the worm 19 rotates accordingly, and the other one-way gear 21 and the rack 22 at the front are located on the same meshing transmission path; the worm 19 is meshed with the worm wheel 20; the one-way gear 21 is connected to the angle adjustment mechanism;

[0060] When the support block 10 drives the air nozzle 8 to move forward to cool the hot melt adhesive film, the regulating tube 7 is tilted forward, and then the air nozzle 8 is also tilted forward, so that when the air nozzle 8 moves forward, it can cool the hot melt adhesive film while blowing the hot air on the surface of the hot melt adhesive film forward to accelerate the discharge of heat, avoiding the problem that the hot air is easily discharged to the surrounding area when the hot melt adhesive film is blown directly from top to bottom, resulting in the inability to discharge the hot air in a directional manner, and the inclined wind force can stretch the hot melt adhesive film, reducing the wrinkles generated by the hot melt adhesive film during the cooling process;

[0061] When the support block 10 drives the one-way gear 21 to move forward, the one-way gear 21 meshing with the rack 22 at the rear rotates counterclockwise, and the worm 19 does not rotate accordingly. When the support block 10 moves forward until another one-way gear 21 meshes with the rack 22 in front, the one-way gear 21 rotates counterclockwise accordingly, driving the worm 19 to rotate, and through the meshing effect between the worm 19 and the worm wheel 20, the transmission shaft 17 is driven to rotate, and through the meshing effect between the two bevel gears 18, the driven shaft 15 is driven to rotate, and then the regulating tube 7 and the air nozzle 8 are driven to rotate to tilt backward, so that the air nozzle 8 is driven to move backward, and the hot air on the surface of the hot melt adhesive film can be removed. Blowing backwards accelerates the discharge of heat, and the inclined wind force can stretch the hot-melt adhesive film, reducing the wrinkles generated by the hot-melt adhesive film during the cooling process. When the support block 10 drives another one-way gear 21 to move backward and engage with the rack 22 at the rear, it drives the one-way gear 21 to rotate clockwise, and the worm 19 does not rotate accordingly. When the support block 10 drives one of the one-way gears 21 to move forward to engage with the rack 22 in front, it drives the one-way gear 21 to rotate clockwise, and the worm 19 rotates accordingly, thereby driving the adjusting tube 7 and the air nozzle 8 to tilt forward again, and this cycle is repeated to achieve the effect of automatically adjusting the direction of the air nozzle 8.

[0062] An angle adjustment mechanism is installed on the bracket 3 and is used to adjust the blowing angle of the air cooling mechanism on the hot melt adhesive film according to the thickness of the hot melt adhesive film. There are two angle adjustment mechanisms, which are respectively arranged on the inner walls on both sides of the bracket 3; the angle adjustment mechanism includes multiple transmission components and lifting components for driving multiple transmission components to rise and fall synchronously; the multiple transmission components are respectively connected to the one-way gears 21 in the multiple automatic switching mechanisms; the transmission component includes multiple racks 22 arranged above the base 1 along the height direction of the bracket 3, and the lengths of the multiple racks 22 increase from bottom to top; the racks 22 cooperate with the one-way gears 21, and the lifting component includes a cylinder 23 installed on the top of the bracket 3 and a connecting frame 24 fixedly connected to the extended end of the cylinder 23; the connecting frame 24 is respectively fixedly connected to the multiple racks 22; the bottom of the bracket 3 is also fixedly connected to two second guide rods 25, and the connecting frame 24 is also slidably sleeved on the outside of the two second guide rods 25, and the front and rear parts of the movable groove 14 are both provided with through grooves 26, and the through grooves 26 are used to pass the racks 22;

[0063] When cooling hot-melt adhesive films of different thicknesses, the cylinder 23 can be controlled to drive the lifting rod of the connecting frame 24, so as to adjust the meshing of racks 22 of different lengths with the one-way gear 21. When the one-way gear 21 is meshed and transmitted with the longer rack 22, the greater the angle of rotation of the worm 19 is, the greater the angle of inclination of the adjustment tube 7 and the air nozzle 8 is, the smaller the tensile force on the hot-melt adhesive film is, and it is suitable for cooling thinner hot-melt adhesive films. When the one-way gear 21 is meshed and transmitted with the shorter rack 22, the smaller the angle of rotation of the worm 19 is, the smaller the angle of inclination of the adjustment tube 7 and the air nozzle 8 is, the greater the tensile force on the hot-melt adhesive film is, and it is suitable for cooling thicker hot-melt adhesive films.

[0064] A fixed-point compensation mechanism is installed on the bracket 3, and is used to monitor the temperature of the hot-melt adhesive film after cooling treatment, and to perform fixed-point cooling treatment on the local hot-melt adhesive film that does not meet the cooling requirements. The fixed-point compensation mechanism includes a second shunt pipe 27 installed at one end of the main pipe 4 and a plurality of compensation pipes 28 installed on the second shunt pipe 27; the plurality of compensation pipes 28 are all L-shaped structures, and a solenoid valve 29 is installed on the plurality of compensation pipes 28. A fixing frame 30 is installed on the outer wall of one side of the bracket 3, and a plurality of temperature sensors 31 are installed on the top of the fixing frame 30 along its length direction;

[0065] The temperature sensor 31 is used to monitor the temperature of the hot melt adhesive film after the cooling treatment. When the temperature sensor 31 of a region detects that the temperature of the region has not cooled to the set value, a signal is sent to the controller. The controller controls the solenoid valve 29 corresponding to the temperature sensor 31 to open, thereby opening the corresponding compensation pipe 28. The cold air inside the main pipe 4 then enters the compensation pipe 28 through the second branch pipe 27. The hot melt adhesive film reaching the high temperature region below it is cooled by the compensation pipe 28, thereby achieving the effect of fully cooling the hot melt adhesive film and avoiding the problem of insufficient cooling of the hot melt adhesive film.

[0066] After the compensation pipe 28 is opened, the cold air supply device is controlled to add cold air into the main pipe 4 at a flow rate greater than the flow rate of the compensation pipe 28 .

[0067] Working principle: when the hot melt adhesive film moves to the left, cold air is continuously provided to the air inlet pipe 5 through the cold air supply device, and then the cold air is respectively transported to each first branch pipe 6 through the main pipe 4, and finally blown out through the regulating pipe 7 and the air nozzle 8. The air blown out by the air nozzle 8 is flat cold air, and the screw rod 9 is driven to rotate forward by the control motor 13, and the connecting block 12 is driven to move forward, and then the regulating pipes 7 and the air nozzles 8 are driven to move forward synchronously through the support block 10. When the support block 10 drives the air nozzle 8 to move forward to cool the hot melt adhesive film, the regulating pipe 7 is tilted forward, and then the air nozzle 8 is also tilted forward, so that when the air nozzle 8 moves forward, the hot melt adhesive film can be cooled while the hot air on the surface of the hot melt adhesive film can be blown forward, which accelerates the discharge of heat and avoids the hot air being easily discharged to its surroundings when the hot melt adhesive film is blown directly from top to bottom. The problem of the edge area causes the hot air to be unable to be discharged in a directional manner, and the inclined wind force can stretch the hot melt adhesive film, reducing the wrinkles generated by the hot melt adhesive film during the cooling process. When the support block 10 moves forward until another one-way gear 21 meshes with the front rack 22, the one-way gear 21 rotates counterclockwise, driving the worm 19 to rotate, and through the meshing effect between the worm 19 and the worm wheel 20, the transmission shaft 17 is driven to rotate, and through the meshing effect between the two bevel gears 18, the driven shaft 15 is driven to rotate, and then the regulating tube 7 and the air nozzle 8 are driven to rotate to tilt backward, so that when the air nozzle 8 is driven to move backward, the hot air on the surface of the hot melt adhesive film can be blown backward, accelerating the discharge of heat, and the inclined wind force can stretch the hot melt adhesive film, reducing the wrinkles generated by the hot melt adhesive film during the cooling process;

[0068] The temperature sensor 31 is used to monitor the temperature of the hot melt adhesive film after the cooling treatment. When the temperature sensor 31 of a region detects that the temperature of the region has not cooled to the set value, a signal is sent to the controller. The controller controls the solenoid valve 29 corresponding to the temperature sensor 31 to open, thereby opening the corresponding compensation pipe 28. The cold air inside the main pipe 4 then enters the compensation pipe 28 through the second branch pipe 27. The hot melt adhesive film reaching the high temperature region below it is cooled by the compensation pipe 28, thereby achieving the effect of fully cooling the hot melt adhesive film and avoiding the problem of insufficient cooling of the hot melt adhesive film.

[0069] When cooling hot-melt adhesive films of different thicknesses, the cylinder 23 can be controlled to drive the lifting rod of the connecting frame 24, so as to adjust the meshing of racks 22 of different lengths with the one-way gear 21. When the one-way gear 21 is meshed and transmitted with the longer rack 22, the greater the angle of rotation of the worm 19 is, the greater the angle of inclination of the adjustment tube 7 and the air nozzle 8 is, the smaller the tensile force on the hot-melt adhesive film is, and it is suitable for cooling thinner hot-melt adhesive films. When the one-way gear 21 is meshed and transmitted with the shorter rack 22, the smaller the angle of rotation of the worm 19 is, the smaller the angle of inclination of the adjustment tube 7 and the air nozzle 8 is, the greater the tensile force on the hot-melt adhesive film is, and it is suitable for cooling thicker hot-melt adhesive films.

[0070] It should be noted that the device structure and drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in the field understand the principle of the above invention, the specific details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is to automatically control by a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in the field; the above only describes some exemplary embodiments of the present invention by way of explanation. Undoubtedly, for ordinary technicians in the field, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cooling device for hot melt adhesive film production, comprising a base (1) and two guide rollers (2) mounted on the top of the base (1), characterized in that: Also includes: A bracket (3) mounted on the top of the base (1); An air cooling mechanism, which is mounted on the bracket (3) and is used to cool the hot melt adhesive film; A displacement mechanism, which is mounted on the bracket (3) and is used to drive the air cooling mechanism to move; An automatic switching mechanism, which is mounted on the bracket (3) and is used to switch the direction in which the air cooling mechanism blows air to the hot melt adhesive film; An angle adjustment mechanism, which is mounted on the bracket (3) and is used to adjust the angle at which the air cooling mechanism blows air to the hot melt adhesive film according to the thickness of the hot melt adhesive film; A fixed-point compensation mechanism, which is mounted on the bracket (3) and is used to monitor the temperature of the hot-melt adhesive film after cooling and to perform fixed-point cooling on the local hot-melt adhesive film that does not meet the cooling requirements; The automatic switching mechanism is provided in plurality, and the plurality of automatic switching mechanisms are respectively connected to a plurality of regulating tubes (7); The automatic switching mechanism comprises a movable groove (14) provided inside the support block (10), a driven shaft (15) rotatably connected to the inner wall of the movable groove (14), a fixed seat (16) fixed to the inner wall of one side of the movable groove (14), a transmission shaft (17) rotatably connected inside the fixed seat (16), and a linkage assembly for driving the transmission shaft (17) to rotate and self-lock; The driven shaft (15) and the transmission shaft (17) are both fixedly sleeved with bevel gears (18), and the two bevel gears (18) are meshed with each other; The linkage assembly comprises a worm (19) rotatably connected to the inside of the movable groove (14), a worm wheel (20) fixedly sleeved on the outside of the transmission shaft (17), and two one-way gears (21) mounted on the outside of the worm (19); The worm (19) meshes with the worm wheel (20); The one-way gear (21) is connected to the angle adjustment mechanism; Two angle adjustment mechanisms are provided, and the two angle adjustment mechanisms are respectively arranged on the inner walls on both sides of the bracket (3); The angle adjustment mechanism includes a plurality of transmission components and a lifting component for driving the plurality of transmission components to rise and fall synchronously; The plurality of transmission assemblies are respectively connected to the one-way gears (21) in the plurality of automatic switching mechanisms; The transmission assembly comprises a plurality of racks (22) arranged above the base (1) along the height direction of the bracket (3), and the lengths of the plurality of racks (22) increase sequentially from bottom to top; The rack (22) matches the one-way gear (21).

2. A cooling device for hot melt adhesive film production according to claim 1, characterized in that: The air cooling mechanism comprises a main flow pipe (4) installed on the top of the bracket (3), an air inlet pipe (5) installed on the top of the main flow pipe (4), and a plurality of first branch flow pipes (6) installed on the bottom of the main flow pipe (4); An adjusting tube (7) is installed at the bottom end of the first shunt tube (6), and an air nozzle (8) is installed at the bottom end of the adjusting tube (7); The first diversion pipe (6) is a hose.

3. A cooling device for hot melt adhesive film production according to claim 2, characterized in that: The displacement mechanism comprises a screw rod (9) rotatably connected to the inside of the bracket (3), a support block (10) arranged outside the plurality of adjustment tubes (7), and a motor (13) mounted on the outer wall of the bracket (3); The output end of the motor (13) is fixedly connected to one end of the screw rod (9); A first guide rod (11) is also fixedly connected inside the bracket (3), and the first guide rod (11) and the screw rod (9) are arranged parallel to each other; Two connection blocks (12) are fixedly connected to the top of the support block (10), wherein one of the connection blocks (12) is screwed onto the outside of the screw rod (9), and the other connection block (12) is slidably sleeved onto the outside of the first guide rod (11).

4. A cooling device for hot melt adhesive film production according to claim 3, characterized in that: The lifting assembly comprises a cylinder (23) mounted on the top of the bracket (3) and a connecting frame (24) fixedly connected to the extended end of the cylinder (23); The connecting frame (24) is fixedly connected to the plurality of racks (22) respectively; The bottom of the bracket (3) is also fixedly connected to two second guide rods (25), and the connecting frame (24) is also slidably sleeved on the outside of the two second guide rods (25).

5. A cooling device for hot melt adhesive film production according to claim 4, characterized in that: The front and rear portions of the movable slot (14) are both provided with through slots (26), and the through slots (26) are used for the rack (22) to pass through.

6. A cooling device for hot melt adhesive film production according to claim 5, characterized in that: The fixed-point compensation mechanism comprises a second shunt pipe (27) installed at one end of the main pipe (4) and a plurality of compensation pipes (28) installed on the second shunt pipe (27); The plurality of compensation tubes (28) are all L-shaped structures, and a solenoid valve (29) is installed on the plurality of compensation tubes (28).

7. A cooling device for hot melt adhesive film production according to claim 6, characterized in that: A fixing frame (30) is installed on the outer wall of one side of the bracket (3), and a plurality of temperature sensors (31) are installed on the top of the fixing frame (30) along its length direction. The temperature sensors (31) are used to monitor the temperature of the hot melt adhesive film after cooling treatment.

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