High-speed adhesive film casting forming machine

Abstract

The invention discloses a high-speed adhesive film tape casting forming machine which comprises an extrusion die, a first cooling roller, a second cooling roller and a third cooling roller and further comprises a conveying belt support fixed to a roller support, and a first tensioning roller and a second tensioning roller are rotationally supported on the conveying belt support. A conveying belt deviation rectifying device is further installed on the conveying belt support. A rubber film conveying belt is wound on the tensioning roller I, the tensioning roller II, the cooling roller III, the cooling roller II, the cooling roller I and the conveying belt deviation rectifying device; a glue film temperature control device is mounted on the conveying belt bracket, and the glue film conveying belt penetrates through the glue film temperature control device; the adhesive film temperature control device comprises a temperature control box body installed on the conveying belt support, two air uniformizing pore plates are fixedly installed in the temperature control box body, and the adhesive film conveying belt penetrates through the space between the two air uniformizing pore plates which are parallel to each other and spaced. The high-speed casting forming machine not only can effectively improve the production efficiency of the casting film, but also can ensure the stability of the production quality of the casting film.

Description

Technical Field

[0001] The invention relates to production equipment for making cast film, in particular to a cast forming machine for solar photovoltaic cell encapsulation film. Background Art

[0002] At present, the solar photovoltaic cell encapsulation film casting equipment mainly includes a film extrusion die and a pair of rollers composed of multiple pairs of steel rollers and rubber rollers rolling against each other. The main function of the rollers is to cool and shape the extruded film and press the film pattern. For example, the "high-precision temperature-controlled film casting machine" applied for and authorized by the applicant has a patent number of 202110783485.6; in this invention patent, the extruded film of the film extrusion die enters the pair of rollers of the rubber roller and the steel pattern roller in turn, and then passes through the grinding roller and the cooling roller to complete the film casting. Although the structure can press out the film surface pattern by rolling the rubber roller and the steel pattern roller, due to the relatively high temperature of the molten film just extruded from the extrusion die and the poor heat transfer of the rubber roller, the roller speed can only be slowed down to achieve the purpose of cooling and shaping the extruded film, which not only reduces the molding quality of the extruded film, but more importantly, restricts the rotation speed of the rubber roller and the steel roller, directly affecting the production efficiency of the casting machine.

[0003] In response to the above-mentioned shortcomings, the applicant applied for an "EVA film speed-increasing casting machine" on January 18, 2023, with application number: 202310067310.4. The film casting machine of this application is first cooled and shaped by two pairs of cooling rollers, and then the pattern is pressed and shaped. This structure improves the rotation speed of the casting roller and the operating efficiency of the casting machine to a certain extent.

[0004] The existing film casting equipment has not gotten rid of the structural form of cooling by rotating cooling rollers. Therefore, no matter whether the rollers are embossed first and then cooled and shaped, or first cooled and shaped and then embossed, there are always some obvious shortcomings: first, since the contact angle and arc length of the film and the cooling roller are always fixed, in order to achieve the ideal cooling and shaping effect, the cooling time can only be extended by reducing the speed of the cooling roller. The reduction in the speed of the cooling roller will inevitably lead to a decrease in the operating efficiency of the casting machine. Therefore, the existing structure that relies on cooling rollers to cool and shape the extruded film has become a bottleneck for improving the production efficiency of the casting machine. In addition, the film extruded from the extrusion die still has a relatively high temperature. At this time, the direct embossing contact between the molten film and the roller pair easily forms adhesion between the film and the roller pair, making the surface flatness of the film low, causing wrinkles and ribs, reducing the yield rate, and seriously wasting raw materials. What's more, the ambient temperature of the molten film extruded from the extrusion die will have a direct impact on the quality of the film. Improper temperature control will result in inadequate modification of the raw materials, insufficient coupling activation, and uneven stress in various parts of the film, which can easily cause the film to wrinkle, crack, or even have defects such as holes. Obviously, the existing film cast molding machines have not paid attention to this molding feature, which has also restricted the improvement of the quality of the finished film products. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a high-speed film casting machine, which can not only effectively improve the production efficiency of the cast film, but also ensure the stability of the production quality of the cast film.

[0006] In order to solve the above technical problems, the high-speed film casting machine of the present invention comprises an extrusion mold, and cooling roller one, cooling roller two and cooling roller three rotatably supported on a roller bracket, the film casting machine also comprises a conveyor belt bracket fixedly arranged with the roller bracket, and tensioning roller one and tensioning roller two are rotatably supported on the conveyor belt bracket; a conveyor belt deviation correction device is also installed on the conveyor belt bracket; a film conveyor belt is surrounded by tensioning roller one, tensioning roller two, cooling roller three, cooling roller two, cooling roller one and the conveyor belt deviation correction device; a film temperature control device is installed on the conveyor belt bracket, and the film conveyor belt passes through the film temperature control device; the film temperature control device comprises a temperature control box installed on the conveyor belt bracket, and two uniform air hole plates are fixedly installed in the temperature control box, and the film conveyor belt passes through the middle of the two parallel and spaced uniform air hole plates.

[0007] Furthermore, the cooling roller one and the cooling roller three are respectively located opposite to each other at the front and rear sides of the cooling roller two; the embossed pattern on the outer cylinder surface of the cooling roller two is consistent with the pattern structure on the surface of the film conveyor belt.

[0008] Furthermore, an auxiliary cooling roller 2 and an auxiliary cooling roller 1 are also arranged on the rear side of the cooling roller 1, and the auxiliary cooling roller 2 and the auxiliary roller 1 are rotatably supported on the roller bracket.

[0009] Furthermore, the air uniforming orifice plate forms a temperature control cavity with the top wall and the bottom wall of the temperature control box respectively, and each temperature control cavity is divided into a number of temperature control unit cavities by a temperature control cavity partition; an electric heater, a cold air pipe port and a hair dryer are provided in the temperature control unit cavity; and a number of through holes are distributed on the plate surface of the air uniforming orifice plate.

[0010] Furthermore, the cold air pipe outlet is connected to one end of a cold air generating pipe, the other end of the cold air generating pipe is connected to the air outlet of the blower, and the cold air generating pipe is arranged in a cold water cabinet; the circulating water inlet of the cold water cabinet is connected to the water outlet of the chiller; the circulating water outlet of the cold water cabinet is connected to the water inlet of the chiller.

[0011] Furthermore, the cold air pipe outlet is connected to the cold air generating pipe end through a cold air pipe control valve; the hair dryer is an axial flow fan, the blower is a centrifugal fan, the cold air fan is a compression chiller; the cold air pipe control valve is an electromagnetic stop valve.

[0012] Furthermore, the conveyor belt correction device includes two correction rollers parallel to each other, and the two correction rollers are rotatably supported on a correction roller bracket. The correction roller bracket is supported on a fixed base through a correction slide, and the fixed base is installed on the conveyor belt bracket; a correction drive is arranged between the correction roller bracket and the fixed base.

[0013] Furthermore, the correction roller bracket is supported on the fixed base through four correction sliders; the slide rod support of the correction slider is installed on the correction roller bracket through the slide rod base plate, and the ball joint support of the correction slider is installed on the fixed base through the ball support base plate.

[0014] Furthermore, a correction slide rod is installed on the slide rod support, and a ball joint inner ring is mounted on the correction slide rod. The ball joint inner ring is swingably supported on the ball joint outer ring, and the ball joint outer ring is installed on the ball joint support.

[0015] Furthermore, a detection sensor is installed on the fixed base, and the detection sensor is a photoelectric sensor; the deviation correction driver is an electric push rod; the ball joint outer ring and the ball joint inner ring are made of polyurethane or polymer plastic.

[0016] In the technical solution of the present invention, since a film conveyor belt is stretched around the cooling roller group, the tensioning roller group and the conveyor belt correction device, the film in a molten state extruded by the extrusion mold with a relatively high temperature does not directly enter the counter-roll cooling roller for cooling, but the extruded film in a molten state enters the film conveyor belt for temperature-controlled casting and shaping. On the one hand, the molten film can obtain sufficient film shaping time and shaping path length on the conveyor belt without being restricted by the cooling wrap angle size and wrap angle arc length of the cooling roller, so that the conveying speed of the film on the conveyor belt can be greatly improved, thereby greatly improving the casting operation efficiency of the casting machine; on the other hand, the film can form a uniform film surface pattern on the contact surface with the conveyor belt; during the film conveying process, the process parameters such as the film conveying environment temperature can be controlled to obtain a film with more stable quality.

[0017] Furthermore, since the molten extruded film passes through the film temperature control device along with the film conveyor belt, the film temperature control device can be used to adjust the cooling speed of the film and the film temperature control time by means of a heating or cooling device to create an optimal film environment temperature; and different temperature control sections can be set in the film temperature control device to achieve precise temperature control, so that the film modification is in place, the coupling activation is sufficient, and the uneven stress in all directions of the film can be effectively eliminated. By optimizing the above-mentioned film setting temperature, the film can be completely prevented from wrinkling and bursting, as well as defects such as cracks and holes, thereby effectively improving and stabilizing the quality of the film product while ensuring the efficiency of the cast film production.

[0018] Furthermore, because the film conveyor belt bypasses the conveyor belt deflection correction device, the direction of the deflection correction roller on the conveyor belt deflection correction device is slightly adjusted to generate different tension forces on both sides of the conveyor belt, thereby adjusting the running direction of the film so that the running path of the film always remains in the same straight line direction. This avoids uneven film surface retraction and wrinkling caused by the curved running of the film, and avoids the waste of film material caused by the deviation of the film edge and the increase in the cutting amount of the film edge, thereby effectively improving the film yield and avoiding the waste of film raw materials.

[0019] The structure of the present invention is more conducive to the continuous and large-scale production of film casting, improves the casting production efficiency, and ensures the mechanical properties and product quality of the cast film. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The high-speed film casting machine of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Figure 1 It is a front structural diagram of a specific embodiment of the high-speed film casting machine of the present invention;

[0022] Figure 2 yes Figure 1 A schematic diagram of the running path of the film conveyor belt and the film in the embodiment shown;

[0023] Figure 3 yes Figure 1 A schematic cross-sectional structure diagram of the film temperature control device in the embodiment shown;

[0024] Figure 4 yes Figure 1 A three-dimensional structural diagram of the conveyor belt deviation correcting device in the embodiment shown;

[0025] Figure 5 yes Figure 4 Front view of the structure;

[0026] Figure 6 yes Figure 5 A-A section structure diagram;

[0027] Figure 7 yes Figure 4 Installation structure diagram of the middle deviation-correcting slider;

[0028] Figure 8 yes Figure 4 Front structural diagram of the middle deviation-correcting slider;

[0029] Fig. 9 yes Figure 8 B-B section view;

[0030] In the figure, 1 is a mold support, 2 is an extrusion mold, 3 is a tensioning roller, 4 is a guide roller, 5 is a conveyor belt support, 6 is a support seat, 7 is a conveyor belt correction device, 701 is a correction roller, 702 is a correction driver, 703 is a correction roller support, 704 is a correction slider, 7041 is a slide bar substrate, 7042 is a slide bar support, 7043 is a ball joint substrate, 7044 is a ball joint support, 7045 is a correction slide bar, 7046 is a ball joint inner ring, 7047 is a ball joint outer ring, 705 is a fixed base, 706 is a detection sensor, 8 is a connecting rod, 9 is a guide roller, 10 is a roller support, 11 is a guide roller, 12 is a guide roller, 13 is a guide roller, 14 is a guide roller, 15 is a guide roller, 16 is a guide roller, 17 is a guide roller, 18 is a guide roller, 19 is a guide roller, 20 is a guide roller, 21 is a guide roller, 22 is a guide roller, 23 is a guide roller, 24 is a guide roller, 25 is a guide roller, 26 is a guide roller, 27 is a guide roller, 28 is a guide roller, 29 is a guide roller, 30 is a guide roller, 31 is a guide roller, 32 is a guide roller, 33 is a guide roller, 34 is a guide roller, 35 is a guide roller, 36 is a guide roller, 37 is a guide roller, 38 is a guide roller, 39 is a guide roller, 40 is a guide roller, 41 is a guide roller, 42 is a guide roller, 43 is a guide roller, 44 is a guide roller, 45 is a guide roller, 46 is a guide roller, 47 is a guide Roller three, 12—sliding rail, 13—rubber film, 14—auxiliary cooling roller one, 15—auxiliary cooling roller two, 16—cooling roller one, 17—cooling roller two, 18—cooling roller three, 19—tensioning roller two, 20—rubber film temperature control device, 201—temperature control box, 202—electric heater, 203—cold air pipe outlet, 204—blow dryer, 205—cold air pipe control valve, 206—temperature control chamber partition, 207—uniform air hole plate, 208—cold air generating pipe, 209—heat exchange cabinet, 2010—refrigerant water, 2011—chiller, 2012—blower, 21—guide roller four, 22—rubber film conveyor belt. DETAILED DESCRIPTION

[0031] like Figure 1 , Figure 2 The high-speed film casting machine shown in the figure comprises a roller support 10 and a support base 6. The roller support 10 and the support base 6 are fixedly connected to each other through a connecting rod 8, and the roller support 10 and the support base 6 fixedly connected to each other are movably supported on a sliding ground rail 12 through rollers thereon for debugging and maintenance. A conveyor belt support 5 is also fixedly installed on the support base 6. The conveyor belt support 5 mainly comprises support wall panels on both sides. Tensioning roller 13 and tensioning roller 219 are rotatably supported between the fixedly connected support wall panels. Tensioning roller 13 is rotatably supported on the wall panels on both sides of the conveyor belt support 5 through a tensioning slide seat to adjust the tension of the conveyor belt. A guide roller 421 and a guide roller 14 are also rotatably supported between the wall panels on both sides of the conveyor belt support 5. A conveyor belt deviation correction device 7 is also installed on the conveyor belt support 5. The conveyor belt deviation correction device 7 extends downward and rotatably supports two mutually parallel deviation correction rollers 701.

[0032] The roller support 10 mainly includes roller support wall panels fixedly connected to each other on both sides. The cooling roller 3 18, cooling roller 2 17 and cooling roller 1 16 are rotatably supported in sequence from front to back through corresponding support bearings on the wall panels on both sides of the roller support 10. The cooling roller 3 18 and cooling roller 1 16 are respectively located on both sides of the cooling roller 2 17 in opposite directions. The cooling roller 3 18, cooling roller 2 17 and cooling roller 1 16 are all connected with corresponding circulating cooling water circuits, that is, the cooling water enters the roller cooling cavity from one end of the roller for heat exchange and then flows out from the other end of the roller cooling cavity. The cooling roller 2 17 located in the middle position is a steel roller, and an embossed pattern is formed on the outer cylinder surface of the steel roller, and the embossed pattern corresponds to or is the same as the embossed pattern of the rubber film conveyor belt 22. The outer cylinder surfaces of the cooling roller 3 18 and the cooling roller 2 16 are coated with a rubber layer, and the material and structure of the rubber layer are the same as those in the prior art. The cooling roller three 18, the cooling roller two 17 and the cooling roller one 16 are all connected to the corresponding roller drive motors in a transmission manner, or at least one roller is connected to the corresponding roller drive motor in a transmission manner.

[0033] A guide roller 2 9 and a guide roller 3 11 are rotatably supported between the wall panels on both sides of the roller support 10. An auxiliary cooling roller 14 and an auxiliary cooling roller 2 15 are rotatably supported at a distance at the rear end of the roller support 10. The auxiliary cooling roller 14 and the auxiliary cooling roller 2 15 are driven by corresponding drive motors, and the auxiliary cooling roller 14 and the auxiliary cooling roller 2 15 are also connected to the corresponding circulating cooling water circuit.

[0034] The endless film conveyor belt 22 passes through the tensioning roller 13, the tensioning roller 219, the cooling roller 318, the cooling roller 217, the cooling roller 16, the guide roller 311, the guide roller 29, the guide roller 421, the two deviation correction rollers 701 of the conveyor belt deviation correction device 7, and the guide roller 14 in sequence and returns to the tensioning roller 13 to form a surrounding conveyor belt structure. The film conveyor belt 22 adopts a metal mesh belt, and the belt surface pattern of the metal mesh belt is consistent with the outer cylinder surface pattern of the cooling roller 217. Of course, the film conveyor belt 22 can also adopt a woven belt made of fiber weaving, and its belt surface pattern is also consistent with the cylinder surface pattern of the cooling roller 217.

[0035] A film temperature control device 20 is also horizontally fixedly installed at the upper end of the conveyor belt support 5. The film temperature control device 20 is close to the extrusion die 2, and the horizontal section of the film conveyor belt 22 just passes through the temperature control cavity of the film temperature control device 20. The extrusion die 2 is located above the front end of the horizontal section of the film conveyor belt 22. The extrusion die 2 is movably hoisted on the die support 1, and the extrusion port of the extrusion die 2 is tilted toward the upper belt surface of the film conveyor belt 22.

[0036] The molten film extruded from the extrusion port of the extrusion die 2 enters the belt surface of the horizontal section of the film conveyor belt 22, and passes through the temperature control cavity of the film temperature control device 20 along with the film conveyor belt 22, and then passes through the opposing rolling points of the cooling roller 2 17 and the cooling roller 3 18, and then successively bypasses the lower cylinder surface of the cooling roller 2 17 and the upper cylinder surface of the cooling roller 1 16, and then successively bypasses the lower cylinder surface of the auxiliary cooling roller 2 15 and the upper cylinder surface of the auxiliary cooling roller 1 14, and becomes a molded film with embossed texture.

[0037] like Figure 3 The film temperature control device shown in the figure comprises a temperature control box 20, which has a rectangular tube structure. Narrow input ports and output ports for the film conveyor belt 22 and the film 13 thereon to pass through and output are respectively arranged on the end plates at both ends of the temperature control box 201 with the rectangular tube structure.

[0038] Two uniform air holes 207 are arranged horizontally and spaced apart in the chamber of the temperature control chamber 201, and a horizontal passage for passing the film conveyor belt 22 and the film 13 is formed between the two uniform air holes 207. The uniform air holes 207 located on the upper side and the top chamber wall of the temperature control chamber 201 form an upper temperature control chamber, and the uniform air holes 207 located on the lower side and the bottom chamber wall of the temperature control chamber 201 form a lower temperature control chamber. A number of circular through holes of the same aperture are evenly distributed on the uniform air holes 207.

[0039] The upper temperature control cavity and the lower temperature control cavity are divided into three temperature control unit cavities by the temperature control cavity partition 206. A blower 204 for blowing air into the unit cavity is installed in each temperature control unit cavity, and a cold air pipe port 203 and an electric heater 202 are installed on both sides of the blower 204. The blower 204, the cold air pipe port 203 and the electric heater 202 in the upper temperature control unit cavity are installed on the top wall of the temperature control box 201, and similarly, the blower 204, the cold air pipe port 203 and the electric heater 202 in the lower temperature control unit cavity are installed on the bottom wall of the temperature control box 201.

[0040] The heat exchange cabinet 209 is a closed cabinet body, in which refrigerant water 2010 is contained. The refrigerant water 2010 uses purified water or pure water. The circulating water outlet of the heat exchange cabinet 209 is connected with the water inlet of the chiller 2011, and the circulating water inlet of the heat exchange cabinet 209 is connected with the water outlet of the chiller 2011. A cold air generating pipe 208 is immersed in the refrigerant water 2010 of the heat exchange cabinet 209. Both ends of the cold air generating pipe 208 extend out of the cabinet wall of the heat exchange cabinet 209. The lower end of the cold air generating pipe 208 is connected with the air outlet of the blower 2012. The upper end of the cold air generating pipe 208 leads to the corresponding cold air pipe port 203 through the cold air pipe control valve 205. The cold air pipe control valve 205 is an electromagnetic stop valve. The water chiller 2011 is a common compression air cooler; the hair dryer 204 is an axial flow fan, and the blower 2012 is a centrifugal fan.

[0041] In the above structure, since the upper temperature control chamber and the lower temperature control chamber are divided into a number of temperature control unit chambers, the film 13 on the film conveyor belt 22 can be temperature-controlled in sections, so that different heating and heating temperature parameter values ​​are implemented for different film material components to achieve ideal modification and activation effects. Accordingly, the number of temperature control unit chambers separated by the upper and lower temperature control chambers is not limited to three, and the number of separations should be determined according to specific design conditions. The temperature control unit chambers can be set to form a homogenized temperature control airflow through the homogenization effect of the chamber, and the temperature control airflow in the chamber is then blown to the film conveyor belt 22 and the film 13 thereon through the uniform air hole plate 207, so that the temperature control airflow acts evenly on the upper and lower surfaces of the film.

[0042] like Figure 4 , Figure 5 and Figure 6The conveyor belt deflection correction device shown in the figure comprises two deflection correction rollers 701 which are parallel to each other. The roller length of the deflection correction rollers 701 is slightly larger than the belt width of the film conveyor belt 22. The two deflection correction rollers 701 are rotatably supported on the deflection correction roller bracket 703. When installed, the film conveyor belt 22 passes around the two deflection correction rollers 701. The deflection correction roller bracket 703 is a rectangular frame. The deflection correction roller bracket 703 is movably supported on a fixed base 705 through a deflection correction slider 704. The fixed base 705 is a rectangular frame structure. The fixed base 705 is fixedly installed on the conveyor bracket 5.

[0043] A deflection correction driver 702 is provided between the deflection correction roller bracket 703 and the corresponding frame beam of the fixed base 705. The deflection correction driver 702 is an electric push rod, one end of which is hinged on the deflection correction roller bracket 703, and the other end of which is hinged on the cabinet frame beam of the fixed base 705. A detection sensor 706 is fixedly installed on the fixed base 705. The detection sensor 706 is a photoelectric sensor for detecting the running edge position of the film 13 on the film conveyor belt 22.

[0044] like Figure 7 , 8 and Fig. 9 The deflection correction slider 704 shown includes two slide bar supports 7042, on which deflection correction slide bars 7045 are fixedly mounted, and the two slide bar supports 7042 are respectively located at the two ends of the deflection correction slide bar 7045, and the slide bar supports 7042 are fixedly mounted on the deflection correction roller bracket 703 through the slide bar base plate 7041. A ball joint inner ring 7046 is mounted on the deflection correction slide bar 7045, and the ball joint inner ring 7046 is swingably supported on the ball joint outer ring 7047, and the ball joint outer ring 7047 is fixedly mounted on the ball joint support 7044. The ball joint support 7044 is fixedly mounted on the fixed base 705 through the ball joint base plate 7043, and the fixed base 705 and the conveying bracket 5 are fixedly connected to each other. The ball joint inner ring 7046 is a nylon ring with a convex spherical surface, and the ball joint outer ring 7047 is provided with a concave spherical surface. The ball joint outer ring 7047 is also made of nylon material, and the convex spherical surface of the ball joint inner ring 7046 and the concave spherical surface of the ball joint outer ring 7047 are on the same spherical surface.

[0045] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can understand and use the present invention well. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

Claims

1. A high-speed film casting machine, comprising an extrusion die (2), and a cooling roller 1 (16), a cooling roller 2 (17) and a cooling roller 3 (18) rotatably supported on a roller support (10), characterized in that: The tape casting machine also includes a conveyor belt support (5) fixedly arranged with the roller support (10), and the conveyor belt support (5) rotatably supports a tensioning roller 1 (3) and a tensioning roller 2 (19); a conveyor belt deviation correction device (7) is also installed on the conveyor belt support (5); a conveyor belt deviation correction device (7) is wound around the tensioning roller 1 (3), the tensioning roller 2 (19), the cooling roller 3 (18), the cooling roller 2 (17), the cooling roller 1 (16) and the conveyor belt deviation correction device (7) There is a film conveyor belt (22); a film temperature control device (20) is installed on the conveyor belt support (5), and the film conveyor belt (22) passes through the film temperature control device (20); the film temperature control device (20) includes a temperature control box (201) installed on the conveyor belt support (5), two uniform air holes (207) are fixedly installed in the temperature control box (201), and the film conveyor belt (22) passes through the middle of the two parallel and spaced uniform air holes (207).

2. The high-speed film casting machine according to claim 1, characterized in that: The cooling roller one (16) and the cooling roller three (18) are respectively located opposite to each other on the front and rear sides of the cooling roller two (17); the embossed pattern on the outer surface of the cooling roller two (17) is consistent with the pattern structure on the surface of the film conveyor belt (22).

3. The high-speed film casting machine according to claim 1, characterized in that: The rear side of the cooling roller one (16) is also provided with an auxiliary cooling roller two (15) and an auxiliary cooling roller one (14), and the auxiliary cooling roller two (15) and the auxiliary roller one (14) are rotatably supported on the roller support (10).

4. The high-speed film casting machine according to claim 1, 2 or 3, characterized in that: The air uniforming orifice plate (207) forms a temperature control cavity with the top wall and the bottom wall of the temperature control box (201), respectively, and each temperature control cavity is divided into a plurality of temperature control unit cavities by a temperature control cavity partition plate (206); an electric heater (202), a cold air pipe port (203) and a hair dryer (204) are provided in each of the temperature control unit cavities; and a plurality of through holes are evenly distributed on the plate surface of the air uniforming orifice plate (207).

5. The high-speed film casting machine according to claim 4, characterized in that: The cold air pipe outlet (203) is connected to one end of a cold air generating pipe (208), the other end of the cold air generating pipe (208) is connected to the air outlet of a blower (2012), and the cold air generating pipe (208) is arranged in a cold water cabinet (209); the circulating water inlet of the cold water cabinet (209) is connected to the water outlet of a cold water machine (2011); and the circulating water outlet of the cold water cabinet (209) is connected to the water inlet of a cold water machine (2011).

6. The high-speed film casting machine according to claim 4 or 5, characterized in that: The cold air pipe opening (203) is connected to the end of the cold air generating pipe (208) via a cold air pipe control valve (205); the hair dryer (204) is an axial flow fan, the blower (2012) is a centrifugal fan, and the cold air fan (2011) is a compression chiller; the cold air pipe control valve (205) is an electromagnetic stop valve.

7. The high-speed film casting machine according to claim 1, 2 or 3, characterized in that: The conveyor belt correction device (7) comprises two correction rollers (701) parallel to each other, wherein the two correction rollers (701) are rotatably supported on a correction roller bracket (703), wherein the correction roller bracket (703) is supported on a fixed base (705) via a correction slider (704), and the fixed base (705) is installed on the conveyor belt bracket (5); a correction driver (702) is provided between the correction roller bracket (703) and the fixed base (705).

8. The high-speed film casting machine according to claim 7, characterized in that: The deflection correction roller bracket (703) is supported on a fixed base (705) via four deflection correction sliders (704); a slide bar support (7042) of the deflection correction slider (704) is installed on the deflection correction roller bracket (703) via a slide bar base plate (7041); and a ball joint support (7044) of the deflection correction slider (704) is installed on the fixed base (705) via a ball joint base plate (7043).

9. The high-speed film casting machine according to claim 7 or 8, characterized in that: The slide bar support (7042) is provided with a deflection-correcting slide bar (7045), and the deflection-correcting slide bar (7045) is provided with a ball joint inner ring (7046), and the ball joint inner ring (7046) is swingably supported on a ball joint outer ring (7047), and the ball joint outer ring (7047) is installed on the ball joint support (7044).

10. The high-speed film casting machine according to claim 7 or 8, characterized in that: A detection sensor (706) is installed on the fixed base (705), and the detection sensor (706) is a photoelectric sensor; the deviation correction driver (702) is an electric push rod; the ball joint outer ring (7047) and the ball joint inner ring (7046) are made of polyurethane or polymer plastic.

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