Film making system

Abstract

The utility model relates to the technical field of coating, in particular to a film making system. A film making system comprises a steel belt casting device, a coating die head, a coating back roller and a first drying oven, the first drying oven is provided with a hot air roller, a circulating kidney-shaped steel belt is wound on the coating back roller and the hot air roller, slurry is sprayed to the first surface, facing the circulating kidney-shaped steel belt, of the coating die head, and the circulating kidney-shaped steel belt passes through the first drying oven; the slurry forms a slurry film after passing through a first oven; the winding device is arranged on the downstream of the first drying oven and comprises a first tensioning mechanism and a winding mechanism which are sequentially arranged, the first tensioning mechanism is provided with a swing roller and a stripping roller, the swing roller makes contact with the second surface, the swing roller is suitable for swinging to a preset position, and the swing roller enables the second surface output from the first drying oven to keep stable tensioning force; the stripping roller is used for separating the circulating waist-shaped steel belt from the slurry film, and the winding mechanism is used for winding the slurry film into a slurry film roll. The utility model solves the problem of insufficient tension after the slurry is dried in a solution tape casting method.

Description

Technical Field

[0001] The utility model relates to the technical field of coating, in particular to a film making system. Background Art

[0002] The proton exchange membrane (PEM) is one of the core components of a PEM fuel cell (PEMFC) membrane electrode system. Its performance plays a crucial role in the operation of the entire power generation system. Currently, the most commonly used PEM material is perfluorosulfonic acid resin film. This material offers excellent proton conductivity, heat resistance, mechanical properties, electrochemical performance, and chemical stability.

[0003] To date, perfluorosulfonic acid proton exchange membranes (PEMs), made from perfluorosulfonic acid resins, are the solid electrolytes with the best overall performance. Perfluorosulfonic acid proton exchange membranes are primarily produced by three methods: melt extrusion casting, solution casting, and solution casting. In the solution casting method, a slurry is applied to a steel strip, which is then transported into an oven where it dries. However, the dried slurry membrane suffers from insufficient tension, which can affect subsequent winding. Utility Model Content

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art solution casting method that the slurry is dried in an oven and the slurry film after drying has insufficient tension, thereby providing a film making system.

[0005] In order to solve the above problems, the utility model provides a film making system, comprising:

[0006] A steel strip casting device, comprising a coating die head, a coating back roller, and a first oven, wherein the first oven is provided with a hot air roller, a circulating waist-shaped steel strip is wound around the coating back roller and the hot air roller, the coating die head and the coating back roller are correspondingly arranged, the coating die head sprays slurry toward a first surface of the circulating waist-shaped steel strip, the circulating waist-shaped steel strip passes through the first oven, the slurry forms a slurry film after passing through the first oven, and the slurry film adheres to the circulating waist-shaped steel strip;

[0007] A winding device is provided downstream of the first oven, and includes a first tensioning mechanism and a winding mechanism arranged in sequence. The first tensioning mechanism is provided with a swing roller and a stripping roller. The swing roller contacts the second surface of the circulating waist-shaped steel belt. The swing roller is suitable for swinging to a preset position. The swing roller maintains a stable tension on the second surface output from the first oven. The stripping roller separates the tensioned circulating waist-shaped steel belt and the slurry film. The winding mechanism winds the slurry film into a slurry film roll.

[0008] Optionally, the steel strip casting device also includes a leveling box, which is arranged between the coating back roller and the first oven, the leveling box has a first conveying channel, the first oven has a second conveying channel, the first conveying channel and the second conveying channel are connected, and several support rollers are respectively provided in the first conveying channel and the second conveying channel, and the support rollers are used to support the second surface of the circulating waist-shaped steel strip.

[0009] Optionally, at least one second oven is provided between the leveling oven and the first oven, at least one second oven is provided between the first oven and the first tensioning mechanism, the second oven has a third conveying channel, and the leveling oven, the second oven, the first oven and the second oven are connected in sequence.

[0010] Optionally, the winding device further includes an adjustment mechanism, which is disposed downstream of the stripping roller. The adjustment mechanism is provided with a leveling roller, and the leveling roller is used to level the slurry film.

[0011] Optionally, the winding device further comprises an active traction mechanism, wherein the active traction mechanism is arranged downstream of the stripping roller, and a tension roller is provided downstream of the active traction mechanism, wherein the roller surface of the tension roller is suitable for contacting the slurry film.

[0012] Optionally, the active traction mechanism further includes an active roller and a pressure roller, the pressure roller is arranged tangentially to the active roller, and the slurry film passes through a gap between the pressure roller and the active roller.

[0013] Optionally, the winding device further includes a winding box and a winding mechanism, the winding mechanism is arranged in the winding box, the winding box is arranged downstream of the active traction mechanism, the winding mechanism is provided with a winding roller, and a slurry film roll is wound on the winding roller.

[0014] Optionally, the winding mechanism further includes a winding kiss roller and a second telescopic member, the winding kiss roller is arranged corresponding to the slurry film roll, and the second telescopic member drives the winding kiss roller to move toward or away from the winding roller.

[0015] Optionally, it also includes a cleaning mechanism, which is provided with a cleaning roller, which is arranged tangentially to the coating back roller, and the circulating waist-shaped steel belt passes through the gap between the cleaning roller and the coating back roller, and the cleaning roller cleans the first surface of the circulating waist-shaped steel belt.

[0016] The technical solution of this utility model has the following advantages:

[0017] 1. The film-making system provided by the present invention comprises: a steel strip casting device, provided with a coating die head, a coating back roller and a first oven, the first oven is provided with a hot air roller, a circulating waist-shaped steel strip is wound on the coating back roller and the hot air roller, the coating die head and the coating back roller are arranged correspondingly, the coating die head sprays slurry toward the first surface of the circulating waist-shaped steel strip, the circulating waist-shaped steel strip passes through the first oven, the slurry forms a slurry film after passing through the first oven, and the slurry film adheres to the circulating waist-shaped steel strip; a winding device is arranged downstream of the first oven, comprising a first tensioning mechanism and a winding mechanism arranged in sequence, the first tensioning mechanism is provided with a swing roller and a stripping roller, the swing roller contacts the second surface of the circulating waist-shaped steel strip, the swing roller is suitable for swinging to a preset position, the swing roller keeps a stable tension on the second surface output from the first oven, the stripping roller is used to separate the tensioned circulating waist-shaped steel strip (3) and the slurry film, and the winding mechanism is used to wind the slurry film into a slurry film roll.

[0018] A circulating waist-shaped steel belt is wrapped around the coating back roller and the hot air roller, causing it to circulate back and forth between the coating back roller and the hot air roller. The steel belt casting device applies slurry to the first surface of the circulating waist-shaped steel belt. After the slurry-coated circulating waist-shaped steel belt enters the first drying oven, the hot air from the first drying oven dries the slurry to form a slurry film, bonding the slurry film to the circulating waist-shaped steel belt. A swing roller is provided to contact the second surface of the circulating waist-shaped steel belt. Once the swing roller is adjusted to a preset position, it applies tension to the second surface of the circulating waist-shaped steel belt, maintaining consistent tension on the circulating waist-shaped steel belt. This, in turn, drives consistent tension on the slurry film, solving the problem of insufficient tension on the slurry film after exiting the drying oven and paving the way for subsequent winding. Furthermore, a stripping roller separates the tensioned, bonded circulating waist-shaped steel belt and slurry film, which is then wound up by the winding mechanism.

[0019] 2. The film-making system provided by the present invention includes a steel strip casting device further comprising a leveling box, which is disposed between the coating backing roller and the first oven. The leveling box comprises a first conveying channel, and the first oven comprises a second conveying channel, the first conveying channel and the second conveying channel being interconnected. A plurality of support rollers are disposed within the first conveying channel and the second conveying channel, respectively, to support the second surface of the circulating waist-shaped steel strip. The leveling box allows the slurry on the first surface of the circulating waist-shaped steel strip to be leveled within the leveling box. The circulating waist-shaped steel strip passes through the first and second conveying channels, and the support rollers support the second surface of the circulating waist-shaped steel strip.

[0020] 3. The film-forming system provided by the present invention comprises at least one second oven positioned between the leveling oven and the first oven, and at least one second oven positioned between the first oven and the first tensioning mechanism. The second oven has a third conveying channel, and the leveling oven, the second oven, the first oven, and the second oven are sequentially connected. The multiple ovens ensure that the slurry is fully dried within the ovens, ensuring that the slurry forms a slurry film within the ovens.

[0021] 4. The film-making system provided by the present invention includes a winding device further comprising an adjustment mechanism disposed downstream of the stripping roller, the adjustment mechanism including a leveling roller for leveling the slurry film. The leveling roller can adjust the flatness of the separated slurry film.

[0022] 5. The film-making system provided by the utility model, the winding device also includes an active traction mechanism, the active traction mechanism is arranged downstream of the peeling roller, and a tension roller is provided downstream of the active traction mechanism. The roller surface of the tension roller is suitable for contacting with the slurry film. The tension roller keeps the slurry film in a tensioned state before winding to ensure consistent tension of the slurry film.

[0023] 6. The film-making system provided by the present invention, the active traction mechanism also includes an active roller and a pressure roller, the pressure roller is arranged tangentially to the active roller, the slurry film passes through the gap between the pressure roller and the active roller, and the pressure roller is driven to approach or move away from the active roller to achieve tension isolation.

[0024] 7. The film-making system provided by the present invention includes a winding device further comprising a winding box, a winding mechanism disposed within the winding box, and the winding box being disposed downstream of the active traction mechanism. The winding mechanism includes a winding roller, on which a slurry film roll is wound. The winding roller is disposed so that the slurry film forms a slurry film roll.

[0025] 8. The film-making system provided by the present invention includes a rewinding mechanism that includes a kiss roller and a second telescopic member. The kiss roller is positioned in correspondence with the slurry film roll, and the second telescopic member drives the kiss roller toward or away from the rewinding roller. The kiss roller compresses the slurry film roll, ensuring a tight fit between the layers of the slurry film roll and preventing air from being trapped between the layers.

[0026] 9. The film-making system provided by the utility model also includes a cleaning mechanism, which is provided with a cleaning roller, which is arranged tangent to the coating back roller. A circulating waist-shaped steel belt passes through the gap between the cleaning roller and the coating back roller. The cleaning roller cleans the first surface of the circulating waist-shaped steel belt and removes the residual slurry on the first surface. The coating die head then sprays the slurry on the first surface of the circulating waist-shaped steel belt after cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 A schematic diagram of a film-making system provided in an embodiment of the present invention;

[0029] Figure 2 Schematic diagram of the winding device, coating back roller, coating die head and cleaning mechanism provided in the embodiment of the present utility model;

[0030] Figure 3 This is a schematic diagram of a first oven, a second oven, and a leveling oven provided in an embodiment of the present invention.

[0031] Explanation of reference numerals: 1. Steel strip casting device; 11. Coating back roller; 12. Leveling box; 121. First conveying channel; 13. First oven; 131. Second conveying channel; 132. Hot air roller; 133. Air nozzle; 14. Second oven; 141. Third conveying channel; 142. Support roller; 15. Coating die head; 16. Cleaning mechanism; 161. Cleaning roller; 162. Third telescopic member; 17. Pass roller; 2. Collector Rolling device; 21. First tensioning mechanism; 211. Swinging roller; 212. Peeling roller; 22. Active traction mechanism; 221. Active roller; 222. Pressing roller; 223. First telescopic member; 23. Winding box; 24. Winding mechanism; 241. Winding roller; 242. Winding kiss roller; 243. Second telescopic member; 25. Adjusting mechanism; 26. Second tensioning mechanism; 27. Base; 3. Circulating waist-shaped steel belt; 4. Slurry film. DETAILED DESCRIPTION

[0032] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] like Figure 1 A specific embodiment of the film-making system shown in FIG3 includes: a steel strip casting device 1 and a winding device 2 provided on the side of the steel strip casting device 1. It should be noted that the downstream in this application refers to the moving direction of the slurry film 4.

[0037] like Figure 1 、 Figure 3 As shown, the steel strip casting device 1 includes a coating back roller 11, a leveling box 12, and a first drying oven 13, wherein the coating back roller 11 is an active roller 221, and the hot air roller 132 in the first drying oven 13 is a passive roller. The roller surfaces of the coating back roller 11 and the hot air roller 132 are wound with a circulating waist-shaped steel strip 3. It should be noted that the first surface of the circulating waist-shaped steel strip 3 is sprayed with slurry, and the second surface of the circulating waist-shaped steel strip 3 is in contact with the roller surfaces of the coating back roller 11 and the hot air roller 132 respectively. Figure 1 As shown, the coating machine also includes a coating die 15 , which is arranged corresponding to the coating back roller 11 . The coating die 15 sprays slurry with a uniform flow rate toward the first surface of the circulating waist-shaped steel strip 3 .

[0038] like Figure 1 、 Figure 3 As shown, the steel strip casting device 1 also includes four second ovens 14, wherein two second ovens 14 connected in sequence are provided between the leveling box 12 and the inlet of the first oven 13, and two second ovens 14 connected in sequence are provided outside the outlet of the first oven 13. The above structure forms a "U" shape, so that the circulating waist-shaped steel strip 3 coated with slurry passes through "leveling box 12→second oven 14→second oven 14→first oven 13→second oven 14→second oven 14" in sequence. The slurry coated on the circulating waist-shaped steel strip 3 is leveled in the leveling box 12 and dried into a slurry film 4 in the oven. It should be noted that the adjacent leveling boxes 12 and second ovens 14, the adjacent second ovens 14 and second ovens 14, and the adjacent second ovens 14 and first ovens 13 are all connected end to end. As shown Figure 1 、 Figure 2 and Figure 3 As shown, after the endless waist-shaped steel strip 3 passes through the outlet of the last second drying oven 14, the second surface of the endless waist-shaped steel strip 3 contacts the surface of the roller 17 and then reaches the coating back roller 11. In this embodiment, the leveling box 12 is the same as the second drying oven 14.

[0039] like Figure 3 As shown, the leveling box 12 has a first conveying channel 121, the first oven 13 has a second conveying channel 131, and the second oven 14 has a third conveying channel 141, wherein the first conveying channel 121 is connected to the third conveying channel 141, and the third conveying channel 141 is connected to the second conveying channel 131. In order to ensure that the height of the circulating waist-shaped steel belt 3 remains consistent, a number of support rollers 142 of equal height are respectively provided in the first conveying channel 121, the second conveying channel 131 and the third conveying channel 141. The support rollers 142 support the second surface of the circulating waist-shaped steel belt 3. Figure 3 As shown, the first oven 13 and the second oven 14 are both provided with air nozzles 133 arranged toward the first surface of the circulating waist-shaped steel belt 3. The air nozzles 133 spray hot air toward the first surface of the circulating waist-shaped steel belt 3. The hot air dries the slurry to form a slurry film 4.

[0040] like Figure 1 、 Figure 2 As shown, the winding device 2 also includes a first tensioning mechanism 21, which is located downstream of the roller 17. The first tensioning mechanism 21 includes a swing roller 211 and a swing member for adjusting the swing roller 211. The surface of the swing roller 211 contacts the second surface of the circulating waist-shaped steel belt 3, and the swing roller 211 keeps the circulating waist-shaped steel belt 3 in a tensioned state. Specifically, the swing member is a reciprocating swing cylinder. Figure 2 As shown, the first tensioning mechanism 21 further includes a stripping roller 212 , which is disposed downstream of the swing roller 211 , and is used to separate the circulating waist-shaped steel belt 3 and the slurry film 4 that are bonded together.

[0041] like Figure 2 As shown, the winding device 2 further includes an adjustment mechanism 25, which is located downstream of the first tensioning mechanism 21. The adjustment mechanism 25 is provided with a leveling roller, which adjusts the flatness of the slurry film 4. Figure 2 As shown, the leveled slurry film 4 will automatically pull the mechanism 22 and the winding mechanism 24 in turn, and the peeled circulating waist-shaped steel strip 3 will return to the coating back roller 11. Figure 1 、 Figure 2As shown, the active traction mechanism 22 includes a driving roller 221, a power member, a pressure roller 222, and a first telescopic member 223. The driving roller 221 and the power member are fixedly connected, the roller surface of the driving roller 221 contacts the slurry film 4, and the power member drives the driving roller 221 to rotate. The pressure roller 222 is arranged tangentially to the driving roller 221. The slurry film 4 passes through the gap between the pressure roller 222 and the driving roller 221. The first telescopic member 223 drives the pressure roller 222 toward or away from the driving roller 221. Specifically, the first telescopic member 223 is a telescopic cylinder, and the power member is a servo motor. During operation, the pressure roller 222 will always press on the active roller 221, so that the roller surface of the active roller 221 maintains contact with the slurry film 4. The active roller 221 provides traction for the advancement of the slurry film 4. When the traction provided by the active roller 221 is too large, the swing roller 211 swings toward the active roller 221, and vice versa. Preferably, the speed of the active roller 221 is adjusted to provide appropriate traction so that the swing roller 211 maintains a balanced position and provides constant tension. At the same time, the pressure roller 222 is configured as a rubber roller, and the structure of the active roller 221 and the pressure roller 222 plays the role of tension isolation. It should be noted that the swing roller 211 in this application is suitable for swinging to a preset position, where "preset position" does not refer to a fixed position, but to a position that is swung to according to actual conditions.

[0042] like Figure 1 、 Figure 2 As shown, the winding mechanism 24 is arranged in the winding box 23, and the winding box 23 is arranged on the base 27. Figure 1 、 Figure 2 As shown, the winding box 23 is provided with an entrance, and the slurry film 4 enters the winding box 23 from the entrance. A second tensioning mechanism 26 is provided at the entrance of the winding box 23. Figure 1 、 Figure 2 As shown, the winding mechanism 24 includes a winding roller 241 and a driving member. The second tensioning mechanism 26 includes a tension roller. After the slurry film 4 contacts the leveling roller, it contacts the active roller 221 and the tension roller in turn. Finally, the driving member drives the winding roller 241 to rewind the slurry film into a roll. Specifically, the driving member is a servo motor. A tension detection mechanism is set on the tension roller. The tension detection mechanism detects the tension of the slurry film 4, and the signal is fed back to the servo motor to control the winding speed of the winding roller 241 and adjust the tension to keep consistent. Figure 2 As shown, the winding mechanism 24 further includes a winding kiss roller 242 and a second telescopic member 243, wherein the winding kiss roller 242 is arranged corresponding to the slurry film roll, and the second telescopic member 243 drives the winding kiss roller 242 to move toward or away from the winding roller 241. Specifically, the second telescopic member 243 is a telescopic cylinder.

[0043] like Figure 1 、 Figure 2As shown, the steel strip casting device 1 also includes a cleaning mechanism 16, which includes a cleaning roller 161 and a third telescopic member 162. The cleaning roller 161 and the coating back roller 11 are correspondingly arranged. The third telescopic member 162 drives the cleaning roller 161 to move toward or away from the coating back roller 11. The cleaning roller 161 is used to clean the residual slurry film 4 on the first surface of the circulating waist-shaped steel strip 3 after being peeled off by the leveling roller.

[0044] To achieve automatic control, a controller is also included, which is respectively connected to the coating die 15, the coating back roller 11, the first oven 13, the second oven 14, the first telescopic member 223, the second telescopic member 243, the third telescopic member 162, the fourth telescopic member, the power member and the driving member.

[0045] During the specific implementation process, the controller controls the coating back roller 11 to drive the circulating waist-shaped steel belt 3 to rotate at a preset speed, and the coating die head 15 sprays slurry toward the circulating waist-shaped steel belt 3. The circulating waist-shaped steel belt 3 coated with slurry passes through the "leveling box 12→second oven 14→second oven 14→first oven 13→second oven 14→second oven 14" in sequence, and then passes through the roller 17 to reach the roller surface of the swing roller 211. The swing roller 211 provides tensioning force, and the peeling roller 212 separates the bonded slurry film 4 from the circulating waist-shaped steel belt 3, and then reaches the coating back roller 11 after passing through the leveling roller for circulation. Among them, the slurry coated on the first surface of the circulating waist-shaped steel belt 3 is dried in the oven to form a slurry film 4 bonded to the first surface, and the peeling roller 212 separates the bonded slurry film 4 from the circulating waist-shaped steel belt 3. The slurry film 4 after being separated from the circulating waist-shaped steel belt 3 will pass through the active roller 221 and the tension roller in sequence, and then be rolled into a slurry film roll by the winding roller 241; when the circulating waist-shaped steel belt 3 after being separated from the slurry film 4 contacts the coating back roller 11, the cleaning roller 161 cleans the residual slurry film 4 on the first surface of the circulating waist-shaped steel belt 3.

[0046] The film-making system provided by the present invention has the following advantages: (1) the fourth telescopic member is used to adjust the swing roller 211 so that the tension of the circulating waist-shaped steel belt 3 and the slurry film 4 output from the oven is kept consistent; (2) the slurry coated on the first surface of the circulating waist-shaped steel belt 3 is first leveled in the leveling box 12 to ensure flatness, and then dried in the oven to form a slurry film 4 with uniform thickness; (3) the winding kiss roller 242 presses the slurry film roll to ensure that the layers of the slurry film roll are tightly fitted to avoid air retention between the layers; (4) a tension roller is provided to ensure that the tension of the peeled slurry film 4 before entering the winding is always consistent.

[0047] As an alternative embodiment, the first telescopic member 223, the second telescopic member 243, and the third telescopic member 162 may also be telescopic servo motors.

[0048] As an alternative embodiment, the coating back roller 11 may also be a passive roller, and the hot air roller 132 may be an active roller 221 ; or, both the coating back roller 11 and the hot air roller 132 may be active rollers 221 .

[0049] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications derived therefrom remain within the scope of protection of the present invention.

Claims

1. A film-making system, characterized in that: include: A steel strip casting device (1), wherein the steel strip casting device (1) is provided with a coating die (15), a coating back roller (11) and a first oven (13), wherein the first oven (13) is provided with a hot air roller (132), a circulating waist-shaped steel strip (3) is wound around the coating back roller (11) and the hot air roller (132), the coating die (15) and the coating back roller (11) are correspondingly arranged, the coating die (15) sprays slurry toward the first surface of the circulating waist-shaped steel strip (3), the circulating waist-shaped steel strip (3) passes through the first oven (13), the slurry forms a slurry film (4) after passing through the first oven (13), and the slurry film (4) adheres to the circulating waist-shaped steel strip (3); A winding device (2), the winding device (2) is arranged downstream of the first drying oven (13), and includes a first tensioning mechanism (21) and a winding mechanism (24) arranged in sequence, the first tensioning mechanism (21) is provided with a swing roller (211) and a stripping roller (212), the swing roller (211) contacts the second surface of the circulating waist-shaped steel belt (3), the swing roller (211) is suitable for swinging to a preset position, the swing roller (211) is used to keep a stable tension on the second surface output from the first drying oven (13), the stripping roller (212) is used to separate the tensioned circulating waist-shaped steel belt (3) and the slurry film (4), and the winding mechanism (24) is used to wind the slurry film (4) into a slurry film roll.

2. The film making system according to claim 1, characterized in that: The steel strip casting device (1) also includes a leveling box (12), which is arranged between the coating back roller (11) and the first oven (13), and the leveling box (12) has a first conveying channel (121), and the first oven (13) has a second conveying channel (131), and the first conveying channel (121) and the second conveying channel (131) are connected. A plurality of supporting rollers (142) are respectively provided in the first conveying channel (121) and the second conveying channel (131), and the supporting rollers (142) are used to support the second surface of the circulating waist-shaped steel strip (3).

3. The film making system according to claim 2, characterized in that: At least one second oven (14) is provided between the leveling box (12) and the first oven (13), at least one second oven (14) is provided between the first oven (13) and the first tensioning mechanism (21), the second oven (14) has a third conveying channel (141), and the leveling box (12), the second oven (14), the first oven (13) and the second oven (14) are connected in sequence.

4. The film making system according to claim 1, characterized in that: The winding device (2) further comprises an adjustment mechanism (25), wherein the adjustment mechanism (25) is arranged downstream of the stripping roller (212), and the adjustment mechanism (25) is provided with a leveling roller, and the leveling roller is used to level the slurry film (4).

5. The film making system according to claim 1, characterized in that: The winding device (2) further comprises an active traction mechanism (22), wherein the active traction mechanism (22) is arranged downstream of the stripping roller (212), and a tension roller is arranged downstream of the active traction mechanism (22), wherein the roller surface of the tension roller is suitable for contacting the slurry film (4).

6. The film-making system according to claim 5, characterized in that: The active traction mechanism (22) comprises an active roller (221) and a pressure roller (222), wherein the pressure roller (222) is arranged tangentially to the active roller (221), and the slurry film (4) passes through a gap between the pressure roller (222) and the active roller (221).

7. The film-making system according to claim 1, characterized in that: The winding device (2) further comprises a winding box (23), the winding mechanism (24) is arranged in the winding box (23), the winding mechanism (24) is provided with a winding roller (241), and a slurry film roll is wound on the winding roller (241).

8. The film-making system according to claim 7, characterized in that: The winding mechanism (24) also includes a winding kiss roller (242) and a second telescopic member (243), wherein the winding kiss roller (242) is arranged corresponding to the slurry film (4) roll, and the second telescopic member (243) drives the winding kiss roller (242) to move toward or away from the winding roller (241).

9. The film-making system according to claim 1, characterized in that: The invention also includes a cleaning mechanism (16), wherein the cleaning mechanism (16) is provided with a cleaning roller (161), wherein the cleaning roller (161) is arranged tangentially to the coating back roller (11), and the circulating waist-shaped steel belt (3) passes through the gap between the cleaning roller (161) and the coating back roller (11), and the cleaning roller (161) cleans the first surface of the circulating waist-shaped steel belt (3).

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