EVA adhesive film extrusion production line and control method thereof

Abstract

The invention relates to the technical field of EVA adhesive film production, and discloses an EVA adhesive film extrusion production line and a control method thereof.The EVA adhesive film extrusion production line comprises an extrusion unit used for extruding a film, a tape casting unit, a crawler-type shaping unit and a winding unit which are arranged in sequence, the crawler-type shaping unit comprises a shell, an extrusion unit, a tape casting unit, a crawler-type shaping unit and a winding unit, the inlet and the outlet are located at the side end of the shell in a non-adjacent manner; the chain belt assembly is mounted in the shell; the cooling plate assemblies are installed on the chain belt assembly in a transmission mode, the membranes walk on the cooling plate assemblies, each cooling plate assembly comprises a main plate piece and an auxiliary plate piece which are matched in a telescopic mode in the width direction of the cooling plate assembly, and the membranes walk on the main plate pieces and the auxiliary plate pieces. The diaphragm is attached to the cooling plate assembly, after heat on the diaphragm is transferred, when the diaphragm is shrunk, the main plate piece and the auxiliary plate piece stretch in the width direction of the main plate piece and the auxiliary plate piece, the micro-opening effect is achieved, the shrinking speed of the diaphragm is controlled, and the diaphragm cannot shrink too fast.

Description

Technical Field

[0001] The invention relates to the technical field of EVA film production, in particular to an EVA film extrusion production line and a control method thereof. Background Art

[0002] Plastic products have the advantages of light weight, good electrical insulation performance, wide range of mechanical lightness, good thermal insulation performance, excellent processing performance and excellent chemical corrosion resistance. Since the beginning of the 20th century, they have been used in the fields of automobiles, household appliances, agriculture, medicine, various packaging, national defense, aerospace, etc. Among them, with the continuous development of solar power generation technology, solar panels are widely used in production, and solar cell encapsulation film (EVA film) is used to be placed between laminated glass and is an important material in the processing of solar panels.

[0003] Chinese patent CN116476416A discloses an EVA film extrusion production line and a control method thereof. The EVA film extrusion production line comprises an extruder, a cast molding machine and a winder arranged in sequence, the extruder is provided with a die head for extruding a film, the cast molding machine comprises a cast molding roller group and a cooling shaping roller group; the EVA film extrusion production line also comprises a tempering heating device and a crawler shaping machine; the tempering heating device comprises a mounting bracket, a heating box assembly and a mesh belt conveying assembly; the crawler shaping machine comprises a plurality of circulating heat-conducting components, the outer surface of the heat-conducting components forms a heat-conducting surface for supporting the film, and the crawler shaping machine is arranged between the shaping roller and the winder. Realizing the EVA film extrusion production line can reduce the influence of stress on the film to improve production quality. In paragraph

[0078] of the specification, it is disclosed that "while the diaphragm follows the movement of the heat-conducting component, on the one hand, the heat-conducting component can effectively support the diaphragm, and the diaphragm is supported at the bottom by the heat-conducting component without being stretched and deformed due to gravity. On the other hand, the heat-conducting component is generally made of a material with good thermal conductivity (such as aluminum, steel and other metal materials), so that the diaphragm can quickly conduct heat to the heat-conducting component. In the process of the diaphragm following the movement of the heat-conducting component, the diaphragm itself can release heat into the air and quickly conduct heat to the heat-conducting component to assist in rapid heat dissipation." In the process of the diaphragm being close to the heat-conducting component for heat conduction, the diaphragm will shrink slightly during the cooling process. If the diaphragm shrinks too quickly, the stress inside it will change too quickly, and the diaphragm will still deform. Summary of the invention

[0004] To achieve the above object, the present invention discloses an EVA film extrusion production line, comprising an extrusion unit, a casting unit, a crawler type shaping unit and a winding unit for extruding a film sheet arranged in sequence, wherein the crawler type shaping unit comprises:

[0005] a housing, wherein the inlet and the outlet are non-adjacently located at a side end of the housing;

[0006] A chain belt assembly, wherein the chain belt assembly is installed in the shell;

[0007] A cooling plate assembly, wherein several groups of cooling plate assemblies are installed on the chain belt assembly, and the diaphragm moves on the cooling plate assembly. The cooling plate assembly comprises a main plate component and a sub-plate component which can be telescopically matched along its width direction, and the diaphragm moves on the main plate component and the sub-plate component.

[0008] Preferably, the chain belt assembly comprises:

[0009] A rotating sprocket set, wherein two sets of rotating sprocket sets arranged in parallel are installed in the housing;

[0010] A rotating motor is installed in the housing and is drivingly connected to the rotating sprocket set;

[0011] The transmission chain belt is installed on two sets of rotating sprocket groups, and the bottom end of the main board component is connected to the transmission chain belt through a mounting frame.

[0012] Preferably, the cooling plate assembly comprises:

[0013] A driving motor, which is fixedly installed at the bottom of the main board;

[0014] A central shaft, one end of the central shaft is connected to the output shaft of the driving motor, the other end of the central shaft extends into the sub-plate and is installed with a sleeve, the sleeve is fixedly installed on the inner wall of the sub-plate, two sets of driving inclined grooves are oppositely opened on the inner wall of the sleeve, a driving slider is slidably installed in the driving inclined groove, and the driving slider is fixedly connected to the other end of the central shaft.

[0015] Preferably, the cooling plate assembly further comprises:

[0016] The main coolant jacket and the auxiliary coolant jacket are arranged in a telescopic nested manner, the main coolant jacket is fixedly installed on the top of the main plate, and the auxiliary coolant jacket is fixedly installed on the top of the auxiliary plate. One end of the main plate in the width direction is arranged in an open manner, and the surface of the auxiliary plate is slidably connected to the inner wall of the main plate from the open end.

[0017] A transverse partition, the transverse partition is fixedly installed on the inner wall of the auxiliary coolant jacket, the transverse partition extends into the main coolant jacket away from the end of the auxiliary coolant jacket, the transverse partition divides the main coolant jacket and the auxiliary coolant jacket into an upper chamber and a lower chamber that are connected one above and one below, and the transverse partition leaves a side opening in the auxiliary coolant jacket for facilitating the communication between the upper chamber and the lower chamber, and conductive ion liquid is stored in the upper chamber and the lower chamber;

[0018] The pressing block is fixedly mounted on the inner wall of the main coolant jacket and blocks the lower chamber away from the side opening end.

[0019] Preferably, the cooling plate assembly further comprises:

[0020] A temperature control component is installed in the main board and is used to detect the temperature in the upper chamber;

[0021] The controller is installed at the bottom of the main board, and the temperature control component and the drive motor are electrically connected to the controller;

[0022] A reflux cylinder is fixedly installed at the bottom end of the main coolant jacket, one end of the reflux cylinder is connected to the lower chamber through a pipe 1, and the other end of the reflux cylinder is passed through a pressure block through a pipe 2 and connected to the upper chamber;

[0023] The air cooling pipe assembly comprises an air cooling pipe wound around the reflux cylinder and a micro pump communicated with the air cooling pipe, and the micro pump is electrically connected to the controller.

[0024] Preferably, the volume of the upper chamber is smaller than the volume of the lower chamber.

[0025] Preferably, the temperature control component comprises:

[0026] Conductive rods, two conductive rods are buried in the upper chamber, the two conductive rods are respectively connected to the resistance sensor on the controller through wires to form a return circuit, and the resistance sensor is electrically connected to the controller.

[0027] The invention further discloses a method for using an EVA film extrusion production line, which is applied to the above EVA film extrusion production line.

[0028] Compared with the prior art, the advantages of the present invention are:

[0029] 1. The present invention discloses an EVA film extrusion production line, wherein an extrusion unit extrude a film, and after the film is tape-cast and cooled in a tape-cast unit, the film is naturally cooled on a crawler-type shaping unit, and a chain belt assembly works to drive a cooling plate assembly to convey in sequence, and the film is fed into a shell from an inlet and moves under the drive of the cooling plate assembly, and the cooling plate assembly transfers heat to the film, thereby improving the natural cooling efficiency of the film, and a winding unit completes the winding of the film, and when the film is attached to the cooling plate assembly, as the heat on the film is transferred to the cooling plate assembly, the main plate component and the auxiliary plate component stretch along the width direction thereof. When the diaphragm is attached to the cooling plate assembly, as the heat on the diaphragm is transferred to the cooling plate assembly, the main plate and the sub-plate stretch along the width direction. After the heat on the diaphragm is transferred, when it shrinks by itself, the main plate and the sub-plate stretch along the width direction, which acts as a slight expansion, thereby controlling the shrinkage speed of the diaphragm and preventing it from shrinking too fast. In this way, the stress inside the diaphragm will not change too quickly, thereby reducing the possibility of diaphragm deformation.

[0030] 2. The present invention discloses an EVA film extrusion production line, in which a diaphragm is attached to a main plate and a sub-plate, and the heat on the diaphragm is transferred to a conductive ion liquid in an upper chamber. When the conductive ion liquid is heated, the conductive ions therein will accelerate their movement, thereby increasing its conductivity, and reducing the resistance between the two conductive rods, thereby sending a signal to a resistance sensor. The resistance sensor transmits the signal to a controller, and the controller sends a working instruction to a drive motor, which drives the motor to work and causes the sub-plate to move away from the main plate. In this way, after the heat on the diaphragm is transferred, when it shrinks by itself, the main plate and the sub-plate stretch along their width direction, thereby playing a role of slightly stretching the diaphragm, thereby controlling the shrinkage speed of the diaphragm and preventing it from shrinking too fast. In this way, the stress inside the diaphragm will not change too fast, thereby reducing the possibility of diaphragm deformation. After the conductive ion liquid in the upper chamber is sucked into the lower chamber from the side opening, it is collected in the reflux drum, and the conductive ion liquid in the reflux drum is pressed into the upper chamber, thereby maintaining the fluidity of the conductive ion liquid in the upper chamber. The micro pump works to send wind into the air-cooling tube wound around the reflux drum, thereby accelerating the cooling of the conductive ion liquid in the reflux drum, and the conductive ion liquid in the chamber is sucked into the lower chamber from the side opening, thereby maintaining the fluidity of the conductive ion liquid in the upper chamber, so that it will not overheat and cannot transfer heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a schematic diagram of the process of the present invention;

[0033] Figure 2 It is a structural schematic diagram of the crawler type shaping unit of the present invention;

[0034] Figure 3 A disassembled diagram of a cooling plate assembly of the present invention;

[0035] Figure 4 The cooling plate assembly of the present invention is shown in FIG. Figure 1 (in contracted state);

[0036] Figure 5 The cooling plate assembly of the present invention is shown in FIG. Figure 2 (in stretched state).

[0037] In the figure: 1. extrusion unit; 2. cast molding unit; 3. crawler type shaping unit; 4. winding unit; 10. shell; 11. inlet; 12. outlet; 13. chain belt assembly; 14. cooling plate assembly; 15. main plate assembly; 16. auxiliary plate assembly; 17. rotating sprocket assembly; 18. transmission chain belt; 19. mounting frame; 20. main coolant jacket; 21. auxiliary coolant jacket; 22. partition; 23. upper chamber; 24. lower chamber; 25. side opening; 26. pressing block; 27. controller; 28. reflux cylinder; 29. ​​air cooling pipe; 30. driving motor; 31. central axis; 32. sleeve; 33. driving chute; 34. driving slider; 35. conductive rod; 36. micro pump. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example

[0040] The present invention will be further described below in conjunction with the accompanying drawings.

[0041] like Figures 1 to 5 As shown, an EVA film extrusion production line provided in this embodiment includes an extrusion unit 1 for extruding a film, a casting unit 2, a crawler type shaping unit 3 and a winding unit 4 arranged in sequence, and the crawler type shaping unit 3 includes:

[0042] The housing 10, the inlet 11 and the outlet 12 are not adjacent to each other and are located at the side end of the housing 10;

[0043] A chain belt assembly 13, wherein the chain belt assembly 13 is installed in the housing 10;

[0044] The cooling plate assembly 14, several groups of cooling plate assemblies 14 are transmission-mounted on the chain belt assembly 13, and the diaphragm runs on the cooling plate assembly 14. The cooling plate assembly 14 includes a main plate component 15 and a sub-plate component 16 that can be telescopically matched along its width direction, and the diaphragm runs on the main plate component 15 and the sub-plate component 16.

[0045] The working principle and beneficial effects of the above technical solution are:

[0046] The present invention discloses an EVA film extrusion production line, wherein an extrusion unit 1 extrude a film, which is cooled in a cast molding unit 2 and then naturally cooled on a crawler type shaping unit 3, a chain belt assembly 13 works to drive a cooling plate assembly 14 to convey in sequence, the film is fed into a shell 10 from an inlet, and moves driven by the cooling plate assembly 14, the cooling plate assembly 14 transfers heat to the film, thereby improving the natural cooling efficiency of the film, a winding unit 4 completes the winding of the film, and when the film is attached to the cooling plate assembly 14, as the heat on the film is transferred to the cooling plate assembly 14, a main plate component 15 and a sub-plate component 16 stretch along the width direction thereof. The present invention provides an EVA film extrusion production line. When the diaphragm is attached to the cooling plate assembly 14, as the heat on the diaphragm is transferred to the cooling plate assembly 14, the main plate 15 and the sub-plate 16 stretch along the width direction thereof. In this way, after the heat on the diaphragm is transferred, when it shrinks itself by cooling, the main plate 15 and the sub-plate 16 stretch along the width direction thereof, playing a role of slightly stretching, thereby controlling the shrinkage speed of the diaphragm and preventing it from shrinking too fast. In this way, the stress inside the diaphragm will not change too fast, thereby reducing the possibility of diaphragm deformation.

[0047] In one embodiment, the chain belt assembly 13 includes:

[0048] The rotating sprocket set 17, two sets of rotating sprocket sets 17 arranged in parallel are installed in the housing 10;

[0049] A rotating motor is installed in the housing 10 and is transmission-connected to the rotating sprocket set 17;

[0050] The transmission chain belt 18 is installed on two sets of rotating sprocket groups 17, and the bottom end of the main board component 15 is connected to the transmission chain belt 18 through a mounting frame 19.

[0051] The working principle and beneficial effects of the above technical solution are:

[0052] The rotating motor located in the shell 10 works, thereby driving the rotating sprocket set 17 connected to it to work, and the rotating sprocket set 17 drives the transmission chain 18 and several groups of cooling plate assemblies 14 connected to the transmission chain 18 through the mounting frame 19 to circulate, thereby driving the diaphragm attached thereto to move. Because the main plate component 15 and the sub-plate component 16 are in a contracted state along their width direction in the initial state, when the cooling plate assembly 14 flips from the bottom of the transmission chain 18 to the top, or when the cooling plate assembly 14 flips from the top of the transmission chain 18 to the bottom, it will not cause motion interference with the diaphragm, thereby not lifting the diaphragm and causing deformation of the diaphragm.

[0053] In one embodiment, the cooling plate assembly 14 includes:

[0054] A driving motor 30, the driving motor 30 is fixedly mounted on the bottom of the main board component 15;

[0055] The central shaft 31 has one end connected to the output shaft of the driving motor 30, and the other end of the central shaft 31 extends into the sub-plate 16 and is provided with a sleeve 32, which is fixedly installed on the inner wall of the sub-plate 16. Two sets of driving bevel grooves 33 are oppositely opened on the inner wall of the sleeve 32, and a driving slider 34 is slidably installed in the driving bevel groove 33, and the driving slider 34 is fixedly connected to the other end of the central shaft 31.

[0056] The working principle and beneficial effects of the above technical solution are:

[0057] The driving motor 30 installed in the main board body 15 works, thereby driving the central shaft 31 installed on its output end to rotate, and with the cooperation of the driving slider 34 and the driving inclined groove 33 installed on the central shaft 31, the sleeve 32 mounted on the central shaft 31 and the sub-plate member 16 connected to the sleeve 32 are driven to move in the direction of approaching or moving away from the main board member 15, thereby realizing the extension and contraction of the main board member 15 and the sub-plate member 16 along their width direction.

[0058] In one embodiment, the cooling plate assembly 14 further comprises:

[0059] The main coolant jacket 20 and the auxiliary coolant jacket 21 are arranged in a telescopic nested manner. The main coolant jacket 20 is fixedly installed on the top of the main plate 15, and the auxiliary coolant jacket 21 is fixedly installed on the top of the auxiliary plate 16. One end of the main plate 15 in the width direction is open, and the surface of the auxiliary plate 16 is slidably connected to the inner wall of the main plate 15 from the open end.

[0060] The diaphragm 22 is fixedly mounted on the inner wall of the auxiliary coolant jacket 21. The diaphragm 22 extends into the main coolant jacket 20 away from the end of the auxiliary coolant jacket 21. The diaphragm 22 separates the main coolant jacket 20 and the auxiliary coolant jacket 21 into an upper chamber 23 and a lower chamber 24 that are connected one above and one below. The diaphragm 22 leaves a side opening 25 in the auxiliary coolant jacket 21 for facilitating the communication between the upper chamber 23 and the lower chamber 24. Conductive ion liquid is stored in the upper chamber 23 and the lower chamber 24.

[0061] The pressing block 26 is fixedly mounted on the inner wall of the main coolant jacket 20 and blocks the end of the lower chamber 24 away from the side opening 25 .

[0062] The working principle and beneficial effects of the above technical solution are:

[0063] The diaphragm is attached to the main plate 15 and the sub-plate 16, and the heat on the diaphragm is transferred to the conductive ion liquid in the upper chamber 23. After the conductive ion liquid is heated, the conductive ions in it will accelerate, so that its conductivity will also increase, thereby triggering the drive motor 30 to work, and the sub-plate 16 moves away from the main plate 15. The conductive ion liquid in the upper chamber 23 is sucked into the lower chamber 24 from the side opening 25, thereby maintaining the fluidity of the conductive ion liquid in the upper chamber 23, so that it will not overheat and fail to transfer heat.

[0064] In one embodiment, the cooling plate assembly 14 further comprises:

[0065] A temperature control component is installed in the main board 15 and is used to detect the temperature in the upper chamber 23;

[0066] Controller 27, the controller 27 is installed at the bottom of the main board 15, and the temperature control component and the drive motor 30 are electrically connected to the controller 27;

[0067] The reflux tube 28 is fixedly mounted at the bottom end of the main coolant jacket 20, one end of the reflux tube 28 is connected to the lower chamber 24 through a pipe 1, and the other end of the reflux tube 28 is connected to the upper chamber 23 through a pipe 2 through a pressing block 26;

[0068] The air cooling pipe assembly includes an air cooling pipe 29 wound around the reflux cylinder 28 and a micro pump 36 connected to the air cooling pipe 29 , and the micro pump 36 is electrically connected to the controller 27 .

[0069] The working principle and beneficial effects of the above technical solution are:

[0070] The diaphragm is attached to the main plate 15 and the sub-plate 16, and the heat on the diaphragm is transferred to the conductive ion liquid in the upper chamber 23. After the conductive ion liquid is heated, the conductive ions in it will accelerate, thereby increasing its conductivity. The temperature control component sends a signal to the controller 27, and the controller 27 sends a working instruction to the drive motor 30. The drive motor 30 works, and the conductive ion liquid in the upper chamber 23 is sucked into the lower chamber 24 from the side opening 25 and then collected in the reflux drum 28. The conductive ion liquid in the reflux drum 28 is pressed into the upper chamber 23, thereby maintaining the fluidity of the conductive ion liquid in the upper chamber 23, and the micro pump 36 works to send wind into the air cooling pipe 29 wound around the reflux drum 28, thereby accelerating the cooling of the conductive ion liquid in the reflux drum 28.

[0071] In one example, the volume of the upper chamber 23 is smaller than the volume of the lower chamber 24 .

[0072] The beneficial effects of the above technical solution are:

[0073] The volume of the upper chamber 23 is significantly smaller than that of the lower chamber 24 . The volume of the upper chamber 23 is at least 1 / 5 of that of the lower chamber 24 . This improves the fluidity of the conductive ionic liquid in the upper chamber 23 .

[0074] In one embodiment, the temperature control assembly includes:

[0075] Conductive rods 35 , two conductive rods 35 are buried in the upper chamber 23 , and the two conductive rods 35 are respectively connected to the resistance sensor on the controller 27 through wires to form a return circuit, and the resistance sensor is electrically connected to the controller 27 .

[0076] The working principle and beneficial effects of the above technical solution are:

[0077] The diaphragm is attached to the main plate 15 and the sub-plate 16, and the heat on the diaphragm is transferred to the conductive ion liquid in the upper chamber 23. After the conductive ion liquid is heated, the conductive ions in it will accelerate their movement, thereby increasing its conductivity, and the resistance between the two conductive rods 35 will decrease, thereby sending a signal to the resistance sensor, and the resistance sensor transmits the signal to the controller 27.

[0078] This embodiment further provides a method for using an EVA film extrusion production line, which is applied to the above EVA film extrusion production line.

[0079] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An EVA film extrusion production line, comprising an extrusion unit (1) for extruding a film, a tape casting unit (2), a crawler type shaping unit (3) and a winding unit (4) arranged in sequence, characterized in that: The crawler type shaping unit (3) comprises: The housing (10), the inlet (11) and the outlet (12) are located non-adjacently at the side end of the housing (10); A chain belt assembly (13), the chain belt assembly (13) is installed in the housing (10); A cooling plate assembly (14), wherein a plurality of groups of cooling plate assemblies (14) are installed on a chain belt assembly (13) in a transmission manner, wherein a diaphragm moves on the cooling plate assembly (14), wherein the cooling plate assembly (14) comprises a main plate component (15) and a sub-plate component (16) which are telescopically matched along the width direction thereof, and wherein the diaphragm moves on the main plate component (15) and the sub-plate component (16).

2. An EVA film extrusion production line according to claim 1, characterized in that: The chain belt assembly (13) comprises: A rotating sprocket group (17), wherein two sets of rotating sprocket groups (17) arranged in parallel are installed in the housing (10); A rotating motor is installed in the housing (10) and is drivingly connected to the rotating sprocket set (17); The transmission chain belt (18) is installed on two groups of rotating sprocket wheels (17), and the bottom end of the main board component (15) is connected to the transmission chain belt (18) through a mounting frame (19).

3. An EVA film extrusion production line according to claim 1, characterized in that: The cooling plate assembly (14) comprises: A driving motor (30), the driving motor (30) is fixedly mounted on the inner bottom of the main board component (15); A central shaft (31), one end of which is connected to the output shaft of the driving motor (30), the other end of which extends into the sub-plate (16) and is provided with a sleeve (32), the sleeve (32) being fixedly installed on the inner wall of the sub-plate (16), two sets of driving inclined grooves (33) being oppositely opened on the inner wall of the sleeve (32), a driving slider (34) being slidably installed in the driving inclined groove (33), and the driving slider (34) being fixedly connected to the other end of the central shaft (31).

4. An EVA film extrusion production line according to claim 3, characterized in that: The cooling plate assembly (14) further comprises: A main coolant jacket (20) and an auxiliary coolant jacket (21), wherein the main coolant jacket (20) and the auxiliary coolant jacket (21) are arranged in a telescopic nested manner, the main coolant jacket (20) is fixedly installed on the top of the main plate component (15), and the auxiliary coolant jacket (21) is fixedly installed on the top of the auxiliary plate component (16), one end of the main plate component (15) in the width direction is arranged in an open manner, and the surface of the auxiliary plate component (16) is slidably connected to the inner wall of the main plate component (15) from the open end; A transverse partition (22), the transverse partition (22) is fixedly mounted on the inner wall of the auxiliary cooling liquid jacket (21), the transverse partition (22) extends into the main cooling liquid jacket (20) away from the end of the auxiliary cooling liquid jacket (21), the transverse partition (22) divides the main cooling liquid jacket (20) and the auxiliary cooling liquid jacket (21) into an upper chamber (23) and a lower chamber (24) which are connected one above and one below, the transverse partition (22) leaves a side opening (25) in the auxiliary cooling liquid jacket (21) for facilitating the communication between the upper chamber (23) and the lower chamber (24), and the upper chamber (23) and the lower chamber (24) store conductive ionic liquid; A pressing block (26) is fixedly mounted on the inner wall of the main cooling liquid jacket (20) and blocks the end of the lower chamber (24) away from the side opening (25).

5. An EVA film extrusion production line according to claim 4, characterized in that: The cooling plate assembly (14) further comprises: A temperature control component, which is installed in the main board component (15) and is used to detect the temperature in the upper chamber (23); A controller (27), the controller (27) is installed at the bottom of the main board (15), and the temperature control component and the drive motor (30) are both electrically connected to the controller (27); A reflux cylinder (28), the reflux cylinder (28) is fixedly installed at the bottom end of the main coolant jacket (20), one end of the reflux cylinder (28) is connected to the lower chamber (24) through a first pipeline, and the other end of the reflux cylinder (28) is passed through a second pipeline through a pressure block (26) and is connected to the upper chamber (23); The air cooling pipe assembly comprises an air cooling pipe (29) wound around a reflux cylinder (28) and a micro pump (36) connected to the air cooling pipe (29); the micro pump (36) is electrically connected to a controller (27).

6. An EVA film extrusion production line according to claim 4, characterized in that: The volume of the upper chamber (23) is smaller than the volume of the lower chamber (24).

7. An EVA film extrusion production line according to claim 5, characterized in that: The temperature control components include: Conductive rods (35), two conductive rods (35) are buried in the upper chamber (23), the two conductive rods (35) are respectively connected to the resistance sensor on the controller (27) through wires to form a return circuit, and the resistance sensor is electrically connected to the controller (27).

8. A control method for an EVA film extrusion production line, characterized in that: The EVA film extrusion production line as claimed in any one of claims 1 to 7 is used.

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