Top film conveying system for membrane electrode and conveying method thereof

Abstract

The present invention belongs to the technical field of film conveying equipment, and specifically relates to a top film conveying system for membrane electrode and a conveying method thereof. The device includes: a winding roller, which is suitable for placing the original film roll; a power support, on which a recovery roller is rotatably arranged; a splitting table, on which a slitting assembly is arranged; an alignment mechanism, which has a centering station. A plurality of flattening assemblies are arranged circumferentially of the centering station; the flattening assembly has a flattening station and a tensioning station, and a plurality of air holes are opened on the flattening station and the tensioning station. The flattening assembly is arranged and expanded or contracted with the alignment mechanism. When the flattening assembly is expanded, air can be blown through the air holes of the flattening station to flatten the raised edges of the membrane material, and when the flattening assembly contracts, the membrane material is pressed between the tensioning station and the centering station to keep the membrane material flat.

Description

Technical Field

[0001] The present invention belongs to the technical field of film conveying equipment, and specifically relates to stacked film feeding equipment, and more particularly to a top film conveying system for a membrane electrode and a conveying method thereof. Background Art

[0002] When the top film of the membrane electrode is transported on the production line, it needs to go through a cutting process, that is, the roll film is cut in sequence to form a sheet film, and then the sheet film is attached to the electrode. When cutting, cutters are usually set on the upper and lower sides of the top film, and then the cutters are brought close to each other to cut through the cutting edge.

[0003] Since the top film is a very flexible material relative to the cutter, the top film will not be cut immediately before the two cutters are completely attached. Instead, the cut part is pushed by the cutter and bends to one side, and then returns to its original shape after being cut. However, when the cutter's edge is worn or rusted after long-term use, causing the edge to become blunt, the top film will be pushed and bent to a greater extent before the above cutters are attached, and will be continuously squeezed by the blunt edge, causing the edge of the top film to remain warped after being cut and unable to recover automatically. This defect will affect the subsequent positioning and attachment of the top film.

[0004] Therefore, it is urgent to design a top film conveying system for membrane electrode to solve the technical problem of top film positioning deviation caused by the straightening mechanism after the top film is warped at the cutting edge.

[0005] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0006] The embodiments of the present disclosure at least provide a top film conveying system for a membrane electrode, including: a winding roller, which is suitable for placing an original film roll;

[0007] A power support, on which a recovery roller is rotatably arranged, and the free end of the original film roll is connected to the recovery roller;

[0008] The splitting table is located between the winding roller and the power support, and has a slitting assembly thereon to slit the original film roll;

[0009] The alignment mechanism is located on one side of the slitting assembly and has a centering station, which is suitable for expanding or contracting along the circumferential direction;

[0010] A plurality of flattening components are arranged in the circumference of the centering station, and a gap is provided between the flattening components and the centering station;

[0011] The flattening assembly has a flattening station and a tensioning station, the tensioning station is arranged toward the gap, the flattening station is inclined toward the center direction of the centering station, and a plurality of air holes are provided on the flattening station and the tensioning station; and

[0012] After the original membrane material is cut by the slitting assembly, it falls onto the centering station, which expands outward to allow the membrane material to completely fall onto the inside of each flattening assembly. Then, the air holes of the flattening station blow air to flatten the warped membrane material. Then, the centering station contracts inward to allow the tensioning station to move to the edge of the membrane material. The air holes of the flattening station inhale air to adsorb the edge of the membrane material.

[0013] In an optional embodiment, the flattening assembly includes an adjusting block, a side of the adjusting block facing the center of the centering station has an inclined surface to form a flattening station, and a gap is provided between the bottom of the adjusting block and the centering station to form a tensioning station.

[0014] In an optional embodiment, the alignment mechanism includes a support frame and a plurality of horizontal telescopic components, and the horizontal telescopic components are evenly distributed along the circumference of the support frame;

[0015] The flattening assembly is installed on the outside of the horizontal telescopic assembly to expand or contract along with the horizontal telescopic assembly.

[0016] In an optional embodiment, the horizontal telescopic assembly includes a horizontal cylinder and a translation plate mounted on a movable end of the horizontal cylinder;

[0017] The translation plates are distributed in a rectangular shape to form the centering station.

[0018] In an optional embodiment, the alignment mechanism further includes a base plate and a plurality of lifting cylinders mounted on the base plate, the base plate is located below the support frame, and the movable ends of the lifting cylinders are connected to the support frame.

[0019] In an optional embodiment, a slitting rack is installed on the parting table, and a slitting cylinder is installed on the slitting rack;

[0020] The slitting assembly is arranged on the inner side of the slitting frame, and the slitting assembly includes an upper knife plate, a lower knife plate and a return spring which are arranged separately, the upper knife plate is provided with an upper knife, the lower knife plate is provided with a lower knife, the upper knife corresponds to the lower knife, and the movable end of the slitting cylinder faces the upper knife plate;

[0021] One end of the return spring is connected to the slitting frame, and the other end is connected to the cutting plate.

[0022] In an optional embodiment, the parting table has a parting groove, which is located on a side of the slitting assembly away from the alignment mechanism, and has guide rollers on its upper and lower sides respectively; and

[0023] The film material passes through the guide roller and the parting groove in turn, so that the main body of the film material and the lower film are separated from the parting groove. The main body of the film material passes through the slitting assembly, and the lower film of the film material is rolled up onto the recovery roller through the guide roller.

[0024] In an optional embodiment, a flattening mechanism is provided between the winding roller and the parting table, and the flattening mechanism includes an active roller and a driven roller arranged at intervals, and the active roller and the driven roller are drivingly connected;

[0025] A flattening motor is installed on one side of the active roller.

[0026] In addition, the present disclosure also provides a top membrane transport system for a membrane electrode, including:

[0027] The splitting table is located between the winding roller and the power support, and has a slitting assembly thereon to slit the original film roll;

[0028] An alignment mechanism, located on the unloading end side of the slitting assembly, having a centering station; and

[0029] The circumferential sliding of the centering station is provided with a plurality of flattening components;

[0030] There is a gap between the flattening component and the centering station. The flattening component has a flattening station and a tensioning station. The tensioning station is arranged parallel to the centering station. The flattening station is inclined toward the center direction of the centering station. A number of air holes are opened on the flattening station and the tensioning station.

[0031] In an optional embodiment, the flattening assembly includes an adjusting block, a side of the adjusting block facing the center of the centering station has an inclined surface to form a flattening station, and a gap is provided between the bottom of the adjusting block and the centering station to form a tensioning station.

[0032] In an optional embodiment, the alignment mechanism includes a support frame and a plurality of horizontal telescopic components, and the horizontal telescopic components are evenly distributed along the circumference of the support frame;

[0033] The flattening assembly is installed on the outside of the horizontal telescopic assembly to expand or contract along with the horizontal telescopic assembly.

[0034] In addition, the embodiment of the present disclosure also provides a top film conveying method for a membrane electrode, and the top film conveying system described above is used to perform the conveying method, and the conveying method includes: the recovery roller rotates to drive the film material on the winding roller to pass through the splitting table, and the original film material is cut into film materials in sequence;

[0035] After the original film is cut by the slitting assembly, it falls to the centering station, and the flattening assembly expands outwards so that the film falls completely to the inside of each flattening assembly. Then, the air holes of the flattening station blow air to flatten the warped film. Then, the flattening assembly contracts inwards so that the tensioning station moves to the edge of the film. The air holes of the flattening station suck air to absorb the edge of the film. Finally, the flattening assembly expands outwards for the second time so that the flattening assembly absorbs the film through the flattening station, and the film is flattened and tensioned.

[0036] The beneficial effect of the present invention is that the present invention is provided with a flattening component and is expanded or contracted with the alignment mechanism. When the flattening component is expanded, air can be blown through the air holes of the flattening station to flatten the raised edge of the membrane material, and when the flattening component is contracted, the membrane material is pressed between the tensioning station and the centering station to keep the membrane material flat.

[0037] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] 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.

[0040] Figure 1 A three-dimensional diagram of a top membrane transport system for a membrane electrode provided in an embodiment of the present disclosure;

[0041] Figure 2 A top view of an alignment mechanism provided in an embodiment of the present disclosure;

[0042] Figure 3 A structural schematic diagram of a flattening assembly provided in an embodiment of the present disclosure;

[0043] Figure 4 A structural stereogram of a flattening mechanism provided in an embodiment of the present disclosure;

[0044] Figure 5 A schematic diagram of the structure of a splitting table provided in an embodiment of the present disclosure;

[0045] Figure 6 A schematic structural diagram of a slitting assembly provided in an embodiment of the present disclosure.

[0046] In the figure:

[0047] 1. Roller;

[0048] 2. Power support; 21. Recovery roller;

[0049] 3. Parting table; 31. Slitting assembly; 311. Upper knife plate; 312. Lower knife plate; 313. Return spring; 32. Slitting frame; 33. Parting groove; 34. Guide roller; 35. Slitting cylinder;

[0050] 4. Alignment mechanism; 41. Centering station; 42. Support frame; 43. Horizontal telescopic assembly; 431. Horizontal cylinder; 432. Translation plate; 44. Bottom plate; 45. Lifting cylinder;

[0051] 5. Flattening assembly; 51. Flattening station; 52. Tensioning station; 53. Air hole; 54. Adjustment block;

[0052] 6. Flattening mechanism; 61. Active roller; 62. Driven roller; 63. Flattening motor;

[0053] 7. Transport mechanism; 71. Transport slide rail; 72. Manipulator. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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.

[0055] Research has found that the top film is a very flexible material relative to the cutter, so before the two cutters are completely attached, the top film will not be cut immediately, but the cut part will be pushed to one side by the cutter, and then return to its original shape after being cut. However, when the cutter's edge is worn or rusted after long-term use, causing the edge to become blunt, before the above cutters are attached, the top film will be pushed and bent to a greater extent, and will be continuously squeezed by the blunt part of the edge, causing the edge of the top film to remain warped after being cut, and unable to recover automatically. This defect will affect the subsequent positioning and attachment of the top film.

[0056] Based on the above research, Figure 1, the embodiment of the present disclosure provides a top film conveying system for membrane electrode, including: a winding roller 1, a splitting table 3, a power support 2, an alignment mechanism 4, a flattening mechanism 6 and a conveying mechanism 7. The winding roller 1 is suitable for placing the original film roll. A recovery roller 21 is installed on the power support 2, and the free end of the original film roll is connected to the recovery roller 21. In some embodiments, one end of the recovery roller 21 is connected to a motor so that the motor drives the recovery roller 21 to rotate, thereby pulling the original film roll on the winding roller 1 to be conveyed in the direction of the power support 2. The flattening mechanism 6 and the splitting table 3 are arranged in sequence along the conveying direction of the film material. In the embodiment of the present disclosure, the film material is a three-layer film structure, specifically, it can include a main body and an upper film and a lower film respectively located on both sides of the main body. The flattening mechanism 6 can flatten the film material and separate the upper film from the main body, and then the main body and the lower film of the film material continue to be conveyed backward, and on the splitting table 3, the lower film is separated from the main body. The parting table 3 also has a slitting assembly 31. After the main body passes through the slitting assembly 31, it is cut into sheets by the slitting assembly 31 and falls onto the alignment mechanism 4. The alignment mechanism 4 has a centering station 41, which is suitable for expanding or contracting along the circumferential direction. After the alignment mechanism 4 centers the film material on the centering station 41, the transport mechanism 7 then moves to the top of the alignment mechanism 4 and moves the film material away for subsequent processes.

[0057] Reference Figure 2 , because the cutting edge of the slitting component 31 is blunted, the warping degree of the cut film material increases and cannot be naturally restored. When the alignment mechanism 4 is centered, the warped side of the film material will be offset and cannot be completely centered. Therefore, in at least one embodiment, a plurality of flattening components 5 are arranged around the centering station 41. Figure 3There is a gap between the flattening assembly 5 and the centering station 41, and the flattening assembly 5 has a flattening station 51 and a tensioning station 52. The tensioning station 52 faces the gap, and the flattening station 51 is tilted toward the center of the centering station 41. Specifically, the flattening assembly 5 includes an adjustment block 54, and the adjustment block 54 has an inclined surface on one side facing the center of the centering station 41 to form the flattening station 51, and there is a gap between the bottom of the adjustment block 54 and the centering station 41 to form the tensioning station 52. A plurality of air holes 53 are provided on the flattening station 51 and the tensioning station 52. Through the above-mentioned arrangement, after the film material is cut by the slitting component 31, it falls onto the centering station 41, and the centering station 41 expands outward so that the film material completely falls onto the inner side of each flattening component 5. At this time, the flattening station 51 faces the edge of the film material, and the air holes 53 of the flattening station 51 of at least one flattening component 5 will blow air toward the raised portion of the film material to flatten the raised portion of the film material. Then, while the air holes 53 continue to blow air, the centering station 41 shrinks inward to keep the film material flat, and shrinks to the gap between the centering station 41 and the tensioning station 52, that is, the tensioning station 52 moves to the edge of the film material, and the air holes 53 of the flattening station 51 inhale air to adsorb the edge of the film material, thereby tightening the film material to prevent the film material from curling up again.

[0058] On the other hand, refer to Figure 3 Since the film material itself is a flexible material, after being centered at the centering station 41, the middle part of the film material will be concave, making the handling of the conveying mechanism 7 less precise. In order to solve the above problem, in some embodiments, after the air holes 53 of the flattening station 51 suck air to tighten the edge of the film material, the centering station 41 is expanded outward again, thereby opening and tightening the film material to form a flat surface, so as to facilitate the conveying mechanism 7 to carry the film material.

[0059] In order to realize the alignment mechanism 4 driving the centering station 41 to expand or contract and realize the centering function of the film material, refer to Figure 2The alignment mechanism 4 includes a support frame 42 and a plurality of horizontal telescopic components 43, and the horizontal telescopic components 43 are evenly distributed along the circumference of the support frame 42. The area enclosed by the outer edge of the horizontal telescopic component 43 is the centering station 41. When the horizontal telescopic component 43 slides in the horizontal direction, the size of the enclosed area can be changed, and the centering station 41 is expanded or contracted. The flattening component 5 is installed on the outer side of the horizontal telescopic component 43 to expand or contract with the horizontal telescopic component 43. Further, the horizontal telescopic component 43 includes a horizontal cylinder 431 and a translation plate 432 installed at the movable end of the horizontal cylinder 431. The translation plate 432 is distributed in a rectangular shape to form the centering station 41. The horizontal cylinder 431 can drive the flat top plate to expand or contract horizontally, so that the flat top plate can be expanded or contracted synchronously to realize the expansion or contraction of the centering station 41. The outer side of the translation plate 432 has a baffle to push the membrane material to the center of the centering station 41 when the flat top plate contracts inward. In addition, in order to facilitate the film material to be centered, the film material is lifted up to facilitate the handling by the handling mechanism 7. The alignment mechanism 4 also includes a bottom plate 44 and a plurality of lifting cylinders 45 installed on the bottom plate 44. The bottom plate 44 is located below the support frame 42. The movable ends of the lifting cylinders 45 are connected to the support frame 42. After the film material is centered on the support frame 42, the lifting cylinders 45 drive the support frame 42 to lift up.

[0060] In order to flatten the original film roll during the conveying process to facilitate cutting, in some embodiments, the flattening mechanism 6 is arranged between the winding roller 1 and the splitting table 3, and the flattening mechanism 6 includes an active roller 61 and a driven roller 62 arranged at intervals, and the active roller 61 and the driven roller 62 are arranged at intervals, and the interval distance is consistent with the thickness of the original film material. The active roller 61 and the driven roller 62 are connected by transmission. As an option, a transmission gear is installed on one side of the active roller 61 and the driven roller 62, and the two transmission gears are meshed with each other. At the same time, a flattening motor 63 is installed on one side of the active roller 61. When the flattening motor 63 drives the active roller 61 to rotate, it can drive the driven roller 62 to rotate in the opposite direction, so that the film roll passing between the active roller 61 and the driven roller 62 is flattened. At the same time, there is also a waste roller above the driven roller 62. After the original film passes through the active roller 61, the top film is separated from the main body of the original film material and rolled up on the waste roller.

[0061] In order to further separate the bottom film of the membrane material from the main body, refer to Figure 5 and Figure 6 The parting table 3 has a parting groove 33, which is located on the side of the slitting assembly 31 away from the alignment mechanism 4, and has guide rollers 34 on the upper and lower sides. The film material passes through the guide rollers 34 and the parting groove 33 in sequence, so that the main body and the lower film of the film material are separated from the parting groove 33, the main body of the film material passes through the slitting assembly 31, and the lower film of the film material is rolled onto the recovery roller 21 through the guide rollers 34.

[0062] In order to realize the function of the slitting component 31 to slit the film material, refer to Figure 5 and Figure 6 , a slitting frame 32 is installed on the splitting table 3, and a slitting cylinder 35 is installed on the slitting frame 32. The slitting assembly 31 is arranged on the inner side of the slitting frame 32, and the slitting assembly 31 includes an upper knife plate 311, a lower knife plate 312 and a reset spring 313 which are separately arranged. The upper knife plate 311 has an upper cutter, and the lower knife plate 312 has a lower cutter. The upper cutter corresponds to the lower cutter, and the movable end of the slitting cylinder 35 faces the upper knife plate 311. One end of the reset spring 313 is connected to the slitting frame 32, and the other end is connected to the cutter plate. Through the above arrangement, when cutting the film material, the movable end of the slitting cylinder 35 descends and pushes the upper knife plate 311, so that the upper knife plate 311 drives the upper cutter to descend, and cooperates with the lower cutter to cut the film material. After the slitting cylinder 35 rises, the reset spring 313 pushes the upper knife plate 311 to rise and reset.

[0063] In addition, reference Figure 1 In some embodiments, the transport mechanism 7 includes a transport rail 71 and a manipulator 72 slidably disposed on the transport rail 71. The manipulator 72 has a suction cup at the bottom. The lifting cylinder 45 drives the support frame 42 to lift up so that the manipulator 72 can slide along the transport rail 71 to transport the film material after adsorbing the film material through the suction cup.

[0064] At least one embodiment further provides a method for conveying a top film, and the top film conveying system described above is used to perform the conveying method, and the conveying method includes: the recovery roller 21 rotates to drive the film material on the winding roller 1 to pass through the splitting table 3, and the original film material is cut into films in sequence. After the original film material is cut by the slitting component 31, it falls on the centering station 41, and the flattening component 5 is expanded outward so that the film material completely falls on the inside of each flattening component 5, and then the air hole 53 of the flattening station 51 blows air to flatten the warped film material, and then the flattening component 5 shrinks inward so that the tensioning station 52 moves to the edge of the film material, and the air hole 53 of the flattening station 51 sucks air to absorb the edge of the film material. Finally, the flattening component 5 is expanded outward for a second time so that the flattening component 5 absorbs the film material through the flattening station 51, and the film material is flattened and tensioned.

[0065] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Inspired by the above-mentioned ideal embodiments of the present invention and through the above-mentioned description, relevant staff can make various changes and modifications without departing from the technical idea of ​​the present invention. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A top membrane transport system for a membrane electrode, characterized in that: include: A roll (1) suitable for placing the original film roll; A power support (2) on which a recovery roller (21) is rotatably arranged, and the free end of the original film roll is connected to the recovery roller (21); A splitting table (3) is located between the winding roller and the power support (2), and has a slitting assembly (31) thereon for slitting the original film roll; An alignment mechanism (4) is located on one side of the slitting assembly (31), and has a centering station (41), wherein the centering station (41) is suitable for expanding or contracting in a circumferential direction; in A plurality of flattening components (5) are arranged in the circumferential direction of the centering station (41), and a gap is provided between the flattening components (5) and the centering station (41); The flattening assembly (5) has a flattening station (51) and a tensioning station (52), the tensioning station (52) is arranged toward the gap, the flattening station (51) is arranged obliquely toward the center direction of the centering station (41), and a plurality of air holes (53) are provided on the flattening station (51) and the tensioning station (52); and After the original film material is cut by the slitting component (31), it falls onto the centering station (41), and the centering station (41) expands outwards so that the film material completely falls onto the inner side of each flattening component (5). Then, the air holes (53) of the flattening station (51) blow air to flatten the warped film material. Then, the centering station (41) contracts inwards so that the tensioning station (52) moves to the edge of the film material. The air holes (53) of the flattening station (51) absorb air to absorb the edge of the film material. The flattening assembly (5) comprises an adjusting block (54), wherein a side of the adjusting block (54) facing the center of the centering station (41) has an inclined surface to form the flattening station (51), and a gap is provided between the bottom of the adjusting block (54) and the centering station (41) to form a tensioning station (52); The alignment mechanism (4) comprises a support frame (42) and a plurality of horizontal telescopic components (43), wherein the horizontal telescopic components (43) are evenly distributed along the circumference of the support frame (42); The flattening component (5) is installed on the outside of the horizontal telescopic component (43) so as to expand or contract along with the horizontal telescopic component (43).

2. The top membrane transport system for membrane electrode according to claim 1, characterized in that: The horizontal telescopic assembly (43) comprises a horizontal cylinder (431) and a translation plate (432) mounted on the movable end of the horizontal cylinder (431); The translation plates (432) are distributed in a rectangular shape to form the centering station (41).

3. The top membrane transport system for membrane electrode according to claim 1, characterized in that: The alignment mechanism (4) further comprises a base plate (44) and a plurality of lifting cylinders (45) mounted on the base plate (44); the base plate (44) is located below the support frame (42); and the movable ends of the lifting cylinders (45) are connected to the support frame (42).

4. The top membrane transport system for membrane electrode according to claim 1, characterized in that: The splitting table (3) is provided with a slitting frame (32), and the slitting frame (32) is provided with a slitting cylinder (35); The slitting assembly (31) is arranged on the inner side of the slitting frame (32), and comprises an upper knife plate (311), a lower knife plate (312) and a return spring (313) which are arranged separately, the upper knife plate (311) has an upper knife, the lower knife plate (312) has a lower knife, the upper knife corresponds to the lower knife, and the movable end of the slitting cylinder (35) faces the upper knife plate (311); One end of the return spring (313) is connected to the slitting frame (32), and the other end is connected to the cutting plate.

5. The top membrane transport system for membrane electrode according to claim 1, characterized in that: The parting table (3) has a parting groove (33), the parting groove (33) is located on a side of the slitting component (31) away from the alignment mechanism (4), and has guide rollers (34) on its upper and lower sides respectively; and The film material passes through the guide roller (34) and the parting groove (33) in sequence, so that the main body of the film material and the lower film are separated from the parting groove (33), the main body of the film material passes through the slitting assembly (31), and the lower film of the film material is rolled onto the recovery roller (21) through the guide roller (34).

6. The top membrane transport system for membrane electrode according to claim 1, characterized in that: A flattening mechanism (6) is provided between the winding roller (1) and the parting table (3), the flattening mechanism (6) comprising an active roller (61) and a driven roller (62) which are arranged at intervals, the active roller (61) and the driven roller (62) being connected in a transmission manner; A flattening motor (63) is installed on one side of the active roller (61).

7. A top membrane transport system for a membrane electrode, characterized in that: include: A splitting table (3) is located between the winding roller and the power support (2), and has a slitting assembly (31) thereon for slitting the original film roll; An alignment mechanism (4) is located on one side of the unloading end of the slitting assembly (31) and has a centering station (41); and The centering station (41) is provided with a plurality of flattening components (5) for circumferential sliding. There is a gap between the flattening component (5) and the centering station (41), the flattening component (5) has a flattening station (51) and a tensioning station (52), the tensioning station (52) is arranged parallel to the centering station (41), the flattening station (51) is arranged inclined toward the center direction of the centering station (41), and a plurality of air holes (53) are provided on the flattening station (51) and the tensioning station (52); The flattening assembly (5) comprises an adjusting block (54), wherein a side of the adjusting block (54) facing the center of the centering station (41) has an inclined surface to form the flattening station (51), and a gap is provided between the bottom of the adjusting block (54) and the centering station (41) to form a tensioning station (52); The alignment mechanism (4) comprises a support frame (42) and a plurality of horizontal telescopic components (43), wherein the horizontal telescopic components (43) are evenly distributed along the circumference of the support frame (42); The flattening component (5) is installed on the outside of the horizontal telescopic component (43) so as to expand or contract along with the horizontal telescopic component (43).

8. A method for transporting a top film for a membrane electrode, characterized in that: The conveying method is performed using the top film conveying system according to any one of claims 1 to 6, and the conveying method comprises: The recovery roller (21) rotates to drive the film material on the winding roller (1) to pass through the splitting table (3), and the original film material is cut into film materials in sequence; After the original film material is cut by the slitting component (31), it falls onto the centering station (41), and the flattening component (5) is expanded outwardly so that the film material completely falls onto the inner side of each flattening component (5). Then, the air holes (53) of the flattening station (51) blow air to flatten the warped film material. Then, the flattening component (5) contracts inwardly so that the tensioning station (52) moves to the edge of the film material. The air holes (53) of the flattening station (51) suck air to absorb the edge of the film material. Finally, the flattening component (5) is expanded outwardly for a second time so that the flattening component (5) absorbs the film material through the flattening station (51), and the film material is flattened and tensioned.

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