Bottom membrane 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 conveying system for a base film for a membrane electrode and a conveying method thereof. The device includes: a material roll, a driving mechanism, a cutting platform, and a splicing mechanism. The splicing mechanism includes a partition bracket and a floating plate slidably arranged on the partition bracket. There is a first station between the partition bracket and the cutting platform to insert new film materials. There is a second station between the partition bracket and the floating plate to insert old film materials. There is a flattening component between the first station and the second station. There is a slitting knife on the side of the floating plate facing the first station. The present invention sets a splicing mechanism to simultaneously dock new film materials and old film materials, and flattens the new film materials and the old film materials at the same time, and then cuts them with a slitting knife, so that the flattened new film materials and the old film materials form a consistent incision after cutting, so as to facilitate the subsequent splicing of the front end of the new film material and the end of the old film material.

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 bottom film conveying system for a membrane electrode and a conveying method thereof. Background Art

[0002] During membrane electrode production, the top membrane, the electrode sheet and the bottom membrane need to be bonded together in sequence to form a complete product. The bottom membrane is used as the installation reference, which runs through the entire device in a straight line and maintains continuous transportation.

[0003] In the related art, after the roll of the base film is unrolled, it is necessary to replace the roll, and then connect the front end of the new roll to the end of the previous film material for subsequent transportation.

[0004] However, since the membrane material is rolled up on a reel, the end of the membrane material has the greatest degree of bending. When the new and old membrane materials are connected, the end of the old membrane material will warp up, and the front end of the new membrane material is usually not smooth due to glue or tape, so it cannot be directly connected to the old membrane material. If the warped part of the old membrane material is not repaired, it will also affect the stability of transportation after connection.

[0005] Therefore, it is urgent to design a base film conveying system and a conveying method for electrodes to solve the technical problem of uneven butt surfaces when connecting new and old film materials. Summary of the invention

[0006] The embodiments of the present disclosure at least provide a bottom membrane conveying system for a membrane electrode and a conveying method thereof.

[0007] In a first aspect, an embodiment of the present disclosure provides a bottom film conveying system for a membrane electrode, comprising: a material roll, which is suitable for rolling up a film material;

[0008] A driving mechanism, which is suitable for driving the film material on the roll to be transported;

[0009] The cutting platform is located between the material roll and the driving mechanism, and has a splicing mechanism on the cutting platform;

[0010] The splicing mechanism includes a partition bracket and a floating plate slidably arranged on the partition bracket, and the partition bracket is spaced apart from the cutting platform;

[0011] A first station is provided between the partition support and the cutting platform to insert new film material;

[0012] A second station is provided between the partition bracket and the floating plate to insert the old membrane material;

[0013] A flattening assembly is provided between the first station and the second station;

[0014] The floating plate has a slitting knife on one side facing the first station; and

[0015] When new membrane material and old membrane material are spliced, the splicing mechanism is inserted along the width direction of the cutting platform so that the first station inserts the new membrane material and the second station inserts the old membrane material. Then, the floating plate descends to push the flattening component to unfold along the width direction of the membrane material and flatten the new membrane material and the old membrane material respectively. Then the slitting knife cuts the old membrane material and the new membrane material in turn.

[0016] Furthermore, the flattening assembly comprises two flattening rods arranged in a mirror image, the top ends of the two flattening rods are hinged, and the bottom ends are integrally provided with a flattening block;

[0017] The bottom of the partition bracket is provided with a guide groove, and the flattening block is slidably arranged in the guide groove;

[0018] A movable protrusion is provided on one side of the floating plate that slides toward the flattening rod; and

[0019] When the floating plate descends, the movable protrusion abuts against the flattening rod and pushes the flattening rod to drive the flattening blocks to expand to both sides respectively to flatten the new film material. Then the floating plate descends until the flattening block pushes the old film material and abuts against the movable protrusion. Then the movable protrusion continues to push the flattening rod to descend so that the flattening block flattens the old film material.

[0020] Furthermore, the width of the flattening block is greater than the width of the flattening rod.

[0021] Furthermore, a slide groove is provided at the bottom of the floating plate, and the movable protrusion is slidably arranged in the slide groove;

[0022] A linear motion pair is installed inside the floating plate, and a movable end of the linear motion pair is connected to a movable protrusion.

[0023] Furthermore, the splicing mechanism further comprises a splicing bracket, on which an adjusting cylinder is mounted, and a movable end of the adjusting cylinder is connected to the partition bracket;

[0024] The movable end of the regulating cylinder is parallel to the width direction of the film material.

[0025] Furthermore, the driving mechanism comprises a driving bracket, on which a driving roller and a flattening roller are rotatably arranged, and the driving roller is drivingly connected with the flattening roller;

[0026] A driving motor is installed on one side of the driving bracket, and the driving motor is drivingly connected to the driving roller;

[0027] The driving roller and the flattening roller are arranged with an interval therebetween.

[0028] Furthermore, the driving bracket is provided with a recovery roller, and a recovery motor is installed on one side of the recovery roller.

[0029] Furthermore, the cutting platform also has a cutting assembly, which includes a crossbeam and a knife seat slidably arranged on the crossbeam.

[0030] Furthermore, the driving mechanism has a bonding platform on one side away from the cutting platform, and the bonding platform includes two support rollers arranged at intervals;

[0031] A heating roller is slidably arranged between the two supporting rollers;

[0032] The heating roller has a heating ring on one side.

[0033] In a second aspect, the embodiment of the present disclosure further provides a splicing mechanism for a bottom film conveying system, comprising: a partition bracket; a floating plate, slidably arranged on the partition bracket, wherein the partition bracket and the cutting platform are spaced apart, a first station is provided between the partition bracket and the cutting platform, and a second station is provided between the partition bracket and the floating plate; and a slitting knife is provided on a side of the floating plate facing the first station;

[0034] A flattening assembly, located between the first station and the second station;

[0035] When splicing new membrane materials with old membrane materials;

[0036] The splicing mechanism is suitable for being inserted along the width direction of the cutting platform so that the new film material is inserted in the first station and the old film material is inserted in the second station;

[0037] The floating plate is suitable for descending to push the flattening assembly to unfold along the width direction of the membrane material, and flatten the new membrane material and the old membrane material respectively; and

[0038] The slitting knife is suitable for slitting old film materials and new film materials in sequence.

[0039] Furthermore, the flattening assembly comprises two flattening rods arranged in a mirror image, the top ends of the two flattening rods are hinged, and the bottom ends are integrally provided with a flattening block;

[0040] The bottom of the partition bracket is provided with a guide groove, and the flattening block is slidably arranged in the guide groove;

[0041] A movable protrusion is elastically provided on one side of the floating plate facing the flattening rod; and

[0042] When the floating plate descends, the movable protrusion contacts the flattening rod and pushes the flattening rod to drive the flattening blocks to expand to both sides to flatten the new film material. Then the floating plate descends until the flattening block pushes the old film material and contacts the movable protrusion to flatten the old film material.

[0043] In a third aspect, the present disclosure also provides a method for conveying a bottom film, which is performed using the top film conveying system for a membrane electrode as described above, and the method comprises:

[0044] Step S1, when the old film material is conveyed, the driving mechanism pulls the film material on the material roll to convey the film material so that the film material passes through the cutting platform;

[0045] Step S2, when the new film material and the old film material are spliced, the splicing mechanism is inserted along the width direction of the cutting platform so that the first station inserts the new film material and the second station inserts the old film material. Then, the floating plate descends to push the flattening assembly to unfold along the width direction of the film material and flatten the new film material and the old film material respectively, and then the slitting knife cuts the old film material and the new film material in sequence;

[0046] Step S3, butting the cuts of the new membrane material and the old membrane material, and connecting the cuts of the new membrane material and the old membrane material by double-sided adhesive at the waste of the old membrane material.

[0047] The beneficial effect of the present invention is that the present invention arranges a splicing mechanism to simultaneously connect the new membrane material and the old membrane material, and flattens the new membrane material and the old membrane material at the same time, and then cuts them with a slitting knife, so that the flattened new membrane material and the old membrane material form consistent incisions after cutting, so as to facilitate the subsequent splicing of the front end of the new membrane material and the end of the old membrane material.

[0048] 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.

[0049] 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

[0050] 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.

[0051] Figure 1 A three-dimensional diagram of a bottom membrane conveying system for a membrane electrode provided in an embodiment of the present disclosure;

[0052] Figure 2 A schematic diagram of the structure of a cutting platform provided in an embodiment of the present disclosure;

[0053] Figure 3 A structural block diagram of a splicing mechanism provided in an embodiment of the present disclosure;

[0054] Figure 4A schematic diagram of a folded state of a flattening assembly provided in an embodiment of the present disclosure;

[0055] Figure 5 A schematic diagram of an unfolded state of a flattening assembly provided in an embodiment of the present disclosure;

[0056] Figure 6 A schematic diagram of the structure of a driving mechanism provided in an embodiment of the present disclosure;

[0057] Figure 7 A schematic structural diagram of a bonding platform provided in an embodiment of the present disclosure.

[0058] In the figure:

[0059] 1. Material roll;

[0060] 2. Driving mechanism; 21. Driving bracket; 22. Driving roller; 23. Flattening roller; 24. Driving motor; 25. Recycling roller; 26. Recycling motor;

[0061] 3. Cutting platform; 31. Cutting assembly; 32. Crossbeam; 33. Knife holder;

[0062] 4. Splicing mechanism; 41. Separating bracket; 411. Guide groove; 42. Floating plate; 421. Movable protrusion; 43. First station; 44. Second station; 45. Flattening assembly; 451. Flattening rod; 452. Flattening block; 46. Slitting knife; 47. Splicing bracket; 48. Adjusting cylinder;

[0063] 5. Laminating platform; 51. Support roller; 52. Heating roller; 53. Heating ring. DETAILED DESCRIPTION

[0064] 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.

[0065] During membrane electrode production, the top membrane, the electrode sheet and the bottom membrane need to be bonded together in sequence to form a complete product. The bottom membrane is used as the installation reference, which runs through the entire device in a straight line and maintains continuous transportation.

[0066] Through research, it is found that in the related technology, after the base film roll is unrolled, it is necessary to replace the roll, and then connect the front end of the new roll with the end of the previous film material for subsequent transportation.

[0067] However, since the membrane material is rolled up on a reel, the end of the membrane material has the greatest degree of bending. When the new and old membrane materials are connected, the end of the old membrane material will warp up, and the front end of the new membrane material is usually not smooth due to glue or tape, so it cannot be directly connected to the old membrane material. If the warped part of the old membrane material is not repaired, it will also affect the stability of transportation after connection.

[0068] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0069] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0070] Based on the above research, Figure 1 , the embodiment of the present disclosure provides a bottom film conveying system for membrane electrode, including: a material roll 1, a driving mechanism 2, a cutting platform 3, a splicing mechanism 4 and a bonding platform 5. The material roll 1 is suitable for winding film materials. In at least one embodiment, the film material refers to the bottom film of the membrane electrode, and the bottom film is a multi-layer structure, and the bottom film includes a membrane body and a protective layer attached to both sides of the membrane body. The driving mechanism 2 has a power source to drive the film material on the material roll 1 to be conveyed in the direction of the driving mechanism 2. The cutting platform 3 is arranged between the material roll 1 and the driving mechanism 2, and the driving mechanism 2 can pull the film material through the cutting platform 3. After the film material passes through the driving mechanism 2, the protective layer on the upper surface of the film material is separated from the film material, while the main body of the film material and the protective layer on the lower surface continue to be conveyed backwards and reach the bonding platform 5, waiting for the pole piece and the top film of the membrane electrode to be attached to the film material in turn, and then continue to be conveyed backwards. The driving mechanism 2 mentioned above only realizes pulling the film material from the material roll 1 to the driving mechanism 2 and separation, and the main body of the film material and the protective layer part on the lower surface are driven by the power source located on one side of the bonding platform 5 to realize transportation.

[0071] On the other hand, after the film material on the roll 1 is used up, it is necessary to change the roll. During the change of rolls, in order to ensure that the old film material is reliably connected to the new film material, the end of the old film material and the front end of the new film material need to be stacked together, and the old film material and the new film material need to be cut while keeping them flat, ensuring that the shapes of the cut portions of the old film material and the new film material are consistent after cutting. Therefore, in at least one embodiment, reference Figure 2, the splicing mechanism 4 is installed on the cutting platform 3. The splicing mechanism 4 includes a partition bracket 41 and a floating plate 42 slidably arranged on the partition bracket 41. The partition bracket 41 includes a side plate and two bottom plates. The two bottom plates are located at the bottom of the side plates, and the two bottom plates are spaced apart in the horizontal direction. The partition bracket 41 and the cutting platform 3 are spaced apart, and the spacing distance is consistent with the thickness of the film material. There is a first station 43 between the partition bracket 41 and the cutting platform 3 to insert new film materials. There is a second station 44 between the partition bracket 41 and the floating plate 42 to insert old film materials. That is, the new film material can be inserted under the bottom plate of the partition bracket 41, and the old film material can be inserted above the bottom plate of the partition bracket 41. In addition, referring to Figure 3 A flattening assembly 45 is provided between the first station 43 and the second station 44. When the first station 43 inserts a new film material and the second station 44 inserts an old film material, the flattening assembly 45 is located between the new film material and the old film material. At the same time, a slitting knife 46 is provided on the side of the floating plate 42 facing the first station 43. Through the above arrangement, when the new film material and the old film material are spliced, the splicing mechanism 4 is inserted along the width direction of the cutting platform 3 so that the first station 43 inserts the new film material and the second station 44 inserts the old film material. Then, the floating plate 42 descends to push the flattening component 45 to unfold along the width direction of the film material and flatten the new film material and the old film material respectively. Then, the slitting knife 46 cuts the old film material and the new film material in turn. Both the new film material and the old film material remain in a flattened state. After being cut under the action of the slitting knife 46, the incisions at the cutting positions of the new film material and the old film material will be consistent with the cutting edge of the slitting knife 46. Therefore, the new film material and the old film material can fit together completely at this time. At the same time, the flattening component 45 can also straighten the curved part at the end of the old film material by flattening to avoid the problem of being unable to normally dock with the new film material after warping.

[0072] Reference Figure 4The flattening assembly 45 includes two flattening rods 451 arranged in mirror image, the top ends of the two flattening rods 451 are hinged, and the bottom ends are integrally provided with a flattening block 452. Meanwhile, the bottom of the partition bracket 41 has a guide groove 411, and the flattening block 452 is slidably arranged in the guide groove 411. When the hinge of the two flattening rods 451 slides downward, the two flattening blocks 452 are respectively expanded to both sides along the guide groove 411, and conversely, when the hinge of the two flattening rods 451 slides upward, the two flattening blocks 452 are respectively closed inwardly along the guide groove 411. In some embodiments, the hinge of the two flattening rods 451 has a torsion spring to drive the two flattening rods 451 to maintain the inwardly closed state in a natural state. On the other hand, the floating plate 42 is provided with a movable protrusion 421 slidingly arranged on one side of the flattening rod 451, and the movable protrusion 421 corresponds to the hinge of the flattening rod 451. Through the above arrangement, when the floating plate 42 descends, the movable protrusion 421 abuts against the flattening rod 451, and pushes the flattening rod 451 to drive the flattening block 452 to expand to both sides respectively to flatten the new film material, and then the floating plate 42 descends until the flattening block 452 pushes the old film material and abuts against the movable protrusion 421, and then the movable protrusion 421 continues to push the flattening rod 451 to descend, so that the flattening block 452 flattens the old film material.

[0073] Reference Figure 4 In some embodiments, the width of the flattening block 452 is greater than the width of the flattening rod 451. When the movable protrusion 421 descends, the flattening block 452 can be supported between the floating plate 42 and the cutting platform 3, so that the flattening rod 451 has sufficient space to rise and fall, and drives the two flattening blocks 452 to slide along the guide groove 411, thereby flattening the new film material and the old film material respectively.

[0074] Reference Figure 5 In some embodiments, in order to further realize the function that the movable protrusion 421 can continue to descend after the floating plate 42 descends to fit the flattening rod 451, a slide groove is provided at the bottom of the floating plate 42, and the movable protrusion 421 is slidably arranged in the slide groove. A linear moving pair is installed inside the floating plate 42, and the movable end of the linear moving pair is connected to the movable protrusion 421. Optionally, the linear moving pair is a cylinder, and the movable end of the cylinder is connected to the movable protrusion 421 to drive the movable protrusion 421 to rise and fall.

[0075] Reference Figure 2In some embodiments, in order not to interfere with the film material during normal conveying, the new film material and the old film material are inserted only when the roll is changed. The splicing mechanism 4 also includes a splicing bracket 47, on which an adjusting cylinder 48 is installed, and the movable end of the adjusting cylinder 48 is connected to the partition bracket 41. The movable end of the adjusting cylinder 48 is parallel to the width direction of the film material. Through the above arrangement, when the film material is normally conveyed, the adjusting cylinder 48 moves the partition bracket 41 together with the floating plate 42 and the flattening component 45 out of the upper surface of the cutting platform 3, and when the roll needs to be changed, the partition bracket 41 is moved to the top of the cutting platform 3, and the new film material and the old film material are manually inserted to the first station 43 and the second station 44 respectively, and then the floating plate 42 is manually pressed to control the descending time and speed of the floating plate 42. As an option, the linear moving pair inside the floating plate 42 can be controlled by remote control.

[0076] Reference Figure 6 In some embodiments, in order to drive the film material to be transported, the driving mechanism 2 includes a driving bracket 21, on which a driving roller 22 and a flattening roller 23 are rotatably arranged, and the driving roller 22 is connected to the flattening roller 23 by transmission. Specifically, a gear is arranged on one side of the driving roller 22 and the flattening roller 23, and the two gears are meshed, so that when the driving roller 22 rotates, the flattening roller 23 is driven by the gear transmission and driven to rotate in the opposite direction. A driving motor 24 is installed on one side of the driving bracket 21, and the driving motor 24 is connected to the driving roller 22 by transmission, thereby driving the flattening roller 23 and the driving roller 22 to rotate synchronously. The driving roller 22 and the flattening roller 23 are arranged at an interval. The interval distance is consistent with the thickness of the film material, so that the film material can pass between the driving roller 22 and the flattening roller 23 and be flattened.

[0077] Reference Figure 6 The driving bracket 21 also has a recovery roller 25, and a recovery motor 26 is installed on one side of the recovery roller 25. The protective layer on the upper surface of the film material is connected to the recovery roller 25, so that after the film material passes through the driving roller 22 and the flattening roller 23, the protective layer on the upper surface of the film material is separated from the main body and rolled onto the recovery roller 25, and the remaining part of the film material continues to be transported toward the bonding platform 5 under the drive of the subsequent power source.

[0078] Reference Figure 2 The cutting platform 3 also has a cutting assembly 31, which includes a crossbeam 32 and a knife seat 33 slidably arranged on the crossbeam 32. When the film material is normally transported, when the film material passes through the cutting platform 3, the cutting assembly 31 cuts a rectangular frame on the film material through the knife seat 33. It should be noted that the rectangular frame cut by the knife seat 33 does not penetrate the film material, and the subsequent pole piece and the top film are attached to the rectangular frame position.

[0079] Reference Figure 7The driving mechanism 2 has a bonding platform 5 on one side away from the cutting platform 3, and the bonding platform 5 includes two support rollers 51 arranged at intervals. When the film moves between the two support rollers 51, the two support rollers 51 flatten the film, and a heating roller 52 is slidably arranged between the two support rollers 51. A heating ring 53 is provided on one side of the heating roller 52, and the heating ring 53 is energized to heat the heating roller 52. After the pole piece and the top film are attached to the rectangular frame of the film material, the heating roller 52 heats the bottom film so that the pole piece and the top film are connected to the bottom film respectively.

[0080] In addition, at least one embodiment provides a bottom film conveying system for membrane electrode, including: a material roll 1, a driving mechanism 2, a cutting platform 3, a splicing mechanism 4 and a bonding platform 5. The material roll 1 is suitable for winding film materials. In at least one embodiment, the film material refers to the bottom film of the membrane electrode, and the bottom film is a multi-layer structure, and the bottom film includes a membrane body and a protective layer attached to both sides of the membrane body. The driving mechanism 2 has a power source to drive the film material on the material roll 1 to be conveyed in the direction of the driving mechanism 2. The cutting platform 3 is arranged between the material roll 1 and the driving mechanism 2, and the driving mechanism 2 can pull the film material through the cutting platform 3. After the film material passes through the driving mechanism 2, the protective layer on the upper surface of the film material is separated from the film material, and the main body of the film material and the protective layer on the lower surface continue to be conveyed backwards to reach the bonding platform 5, waiting for the pole piece and the top film of the membrane electrode to be attached to the film material in turn, and then continue to be conveyed backwards. The driving mechanism 2 mentioned above only realizes pulling the film material from the material roll 1 to the driving mechanism 2 and separation, and the main body of the film material and the protective layer part on the lower surface are driven by the power source located on one side of the bonding platform 5 to realize transportation.

[0081] On the other hand, after the film material on the roll 1 is used up, it is necessary to change the roll. During the change of rolls, in order to ensure that the old film material is reliably connected to the new film material, the end of the old film material and the front end of the new film material need to be stacked together, and the old film material and the new film material need to be cut while keeping them flat, ensuring that the shapes of the cut portions of the old film material and the new film material are consistent after cutting. Therefore, in at least one embodiment, reference Figure 2 , the splicing mechanism 4 is installed on the cutting platform 3. The splicing mechanism 4 includes a partition bracket 41 and a floating plate 42 slidably arranged on the partition bracket 41. The partition bracket 41 includes a side plate and two bottom plates. The two bottom plates are located at the bottom of the side plates, and the two bottom plates are spaced apart in the horizontal direction. The partition bracket 41 and the cutting platform 3 are spaced apart, and the spacing distance is consistent with the thickness of the film material. There is a first station 43 between the partition bracket 41 and the cutting platform 3 to insert new film materials. There is a second station 44 between the partition bracket 41 and the floating plate 42 to insert old film materials. That is, the new film material can be inserted under the bottom plate of the partition bracket 41, and the old film material can be inserted above the bottom plate of the partition bracket 41. In addition, referring to Figure 3A flattening assembly 45 is provided between the first station 43 and the second station 44. When the first station 43 inserts a new film material and the second station 44 inserts an old film material, the flattening assembly 45 is located between the new film material and the old film material. At the same time, a slitting knife 46 is provided on the side of the floating plate 42 facing the first station 43. Through the above arrangement, when the new film material and the old film material are spliced, the splicing mechanism 4 is inserted along the width direction of the cutting platform 3 so that the first station 43 inserts the new film material and the second station 44 inserts the old film material. Then, the floating plate 42 descends to push the flattening component 45 to unfold along the width direction of the film material and flatten the new film material and the old film material respectively. Then, the slitting knife 46 cuts the old film material and the new film material in turn. Both the new film material and the old film material remain in a flattened state. After being cut under the action of the slitting knife 46, the incisions at the cutting positions of the new film material and the old film material will be consistent with the cutting edge of the slitting knife 46. Therefore, the new film material and the old film material can fit together completely at this time. At the same time, the flattening component 45 can also straighten the curved part at the end of the old film material by flattening to avoid the problem of being unable to normally dock with the new film material after warping.

[0082] Reference Figure 4 The flattening assembly 45 includes two flattening rods 451 arranged in mirror image, the top ends of the two flattening rods 451 are hinged, and the bottom ends are integrally provided with a flattening block 452. Meanwhile, the bottom of the partition bracket 41 has a guide groove 411, and the flattening block 452 is slidably arranged in the guide groove 411. When the hinge of the two flattening rods 451 slides downward, the two flattening blocks 452 are respectively expanded to both sides along the guide groove 411, and conversely, when the hinge of the two flattening rods 451 slides upward, the two flattening blocks 452 are respectively closed inwardly along the guide groove 411. In some embodiments, the hinge of the two flattening rods 451 has a torsion spring to drive the two flattening rods 451 to maintain the inwardly closed state in a natural state. On the other hand, the floating plate 42 is provided with a movable protrusion 421 slidingly arranged on one side of the flattening rod 451, and the movable protrusion 421 corresponds to the hinge of the flattening rod 451. Through the above arrangement, when the floating plate 42 descends, the movable protrusion 421 abuts against the flattening rod 451, and pushes the flattening rod 451 to drive the flattening block 452 to expand to both sides respectively to flatten the new film material, and then the floating plate 42 descends until the flattening block 452 pushes the old film material and abuts against the movable protrusion 421, and then the movable protrusion 421 continues to push the flattening rod 451 to descend, so that the flattening block 452 flattens the old film material.

[0083] Reference Figure 4 In some embodiments, the width of the flattening block 452 is greater than the width of the flattening rod 451. When the movable protrusion 421 descends, the flattening block 452 can be supported between the floating plate 42 and the cutting platform 3, so that the flattening rod 451 has sufficient space to rise and fall, and drives the two flattening blocks 452 to slide along the guide groove 411, thereby flattening the new film material and the old film material respectively.

[0084] In addition, at least one embodiment further provides a bottom film conveying method, which is performed using the top film conveying system for membrane electrode as described above, and the conveying method comprises: step S1, when conveying old film material, the driving mechanism 2 pulls the film material on the material roll 1 to convey the film material so that the film material passes through the cutting platform 3;

[0085] Step S2, when the new film material and the old film material are spliced, the splicing mechanism 4 is inserted along the width direction of the cutting platform 3, so that the first station 43 inserts the new film material, and the second station 44 inserts the old film material, then the floating plate 42 descends to push the flattening assembly 45 to unfold along the width direction of the film material, and flatten the new film material and the old film material respectively, and then the slitting knife 46 cuts the old film material and the new film material in sequence;

[0086] Step S3, butting the cuts of the new membrane material and the old membrane material, and connecting the cuts of the new membrane material and the old membrane material by double-sided adhesive at the waste of the old membrane material.

[0087] 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 membrane electrode bottom membrane transport system, characterized in that: include: A material roll (1) suitable for winding up film material; A driving mechanism (2) adapted to drive the film material on the material roll (1) to be transported; A cutting platform (3) is located between the material roll (1) and the driving mechanism (2), and a splicing mechanism (4) is provided on the cutting platform (3); wherein The splicing mechanism (4) comprises a partition bracket (41) and a floating plate (42) slidably arranged on the partition bracket (41), and the partition bracket (41) is spaced apart from the cutting platform (3); A first workstation (43) is provided between the partition support (41) and the cutting platform (3) for inserting new film material; A second workstation (44) is provided between the partition support (41) and the floating plate (42) for inserting old membrane materials; A flattening component (45) is provided between the first workstation (43) and the second workstation (44); The floating plate (42) has a slitting knife (46) on one side facing the first work station (43); and When the new membrane material and the old membrane material are spliced, the splicing mechanism (4) is inserted along the width direction of the cutting platform (3) so that the first station (43) inserts the new membrane material and the second station (44) inserts the old membrane material, and then the floating plate (42) descends to push the flattening component (45) to unfold along the width direction of the membrane material and flatten the new membrane material and the old membrane material respectively, and then the slitting knife (46) cuts the old membrane material and the new membrane material in sequence; The flattening assembly (45) comprises two flattening rods (451) arranged in a mirror image, the top ends of the two flattening rods (451) are hinged, and the bottom ends are integrally provided with a flattening block (452); The bottom of the partition bracket (41) is provided with a guide groove (411), and the flattening block (452) is slidably arranged in the guide groove (411); A movable protrusion (421) is provided on one side of the floating plate (42) that slides toward the flattening rod (451); and When the floating plate (42) descends, the movable protrusion (421) contacts the flattening rod (451) and pushes the flattening rod (451) to drive the flattening block (452) to expand to both sides respectively to flatten the new film material. Then the floating plate (42) descends until the flattening block (452) pushes the old film material to contact the movable protrusion (421). Then the movable protrusion (421) continues to push the flattening rod (451) downward so that the flattening block (452) flattens the old film material.

2. The membrane electrode bottom membrane transport system according to claim 1, characterized in that: The width of the flattening block (452) is greater than the width of the flattening rod (451).

3. The membrane electrode bottom membrane transport system according to claim 1, characterized in that: A sliding groove is provided at the bottom of the floating plate (42), and the movable protrusion (421) is slidably arranged in the sliding groove; A linear motion pair is installed inside the floating plate (42), and a movable end of the linear motion pair is connected to a movable protrusion (421).

4. The membrane electrode bottom membrane transport system according to claim 1, characterized in that: The splicing mechanism (4) further comprises a splicing bracket (47), an adjusting cylinder (48) being mounted on the splicing bracket (47), and a movable end of the adjusting cylinder (48) being connected to the partition bracket (41); The movable end of the regulating cylinder (48) is parallel to the width direction of the film material.

5. The membrane electrode bottom membrane transport system according to claim 1, characterized in that: The driving mechanism (2) comprises a driving bracket (21), on which a driving roller (22) and a flattening roller (23) are rotatably arranged, and the driving roller (22) is drivingly connected to the flattening roller (23); A driving motor (24) is installed on one side of the driving bracket (21), and the driving motor (24) is drivingly connected to the driving roller (22); in The driving roller (22) and the flattening roller (23) are arranged at intervals.

6. The membrane electrode bottom membrane transport system according to claim 5, characterized in that: The driving bracket (21) is also provided with a recovery roller (25), and a recovery motor (26) is mounted on one side of the recovery roller (25).

7. The membrane electrode bottom membrane transport system according to claim 1, characterized in that: The cutting platform (3) also has a cutting assembly (31), which comprises a crossbeam (32) and a knife seat (33) slidably arranged on the crossbeam (32).

8. The membrane electrode bottom membrane transport system according to claim 1, characterized in that: The driving mechanism (2) has a bonding platform (5) on one side away from the cutting platform (3), and the bonding platform (5) comprises two support rollers (51) arranged at an interval; A heating roller (52) is slidably arranged between the two supporting rollers (51); One side of the heating roller (52) is provided with a heating ring (53).

9. A splicing mechanism for a bottom film conveying system, characterized in that: include: A spacer bracket (41); a floating plate (42) slidably arranged on the partition bracket (41), wherein the partition bracket (41) and the cutting platform (3) are spaced apart, a first workstation (43) is provided between the partition bracket (41) and the cutting platform (3), and a second workstation (44) is provided between the partition bracket (41) and the floating plate (42); and a slitting knife (46) is provided on a side of the floating plate (42) facing the first workstation (43); A flattening assembly (45) located between the first workstation (43) and the second workstation (44); When splicing new membrane materials with old membrane materials; The splicing mechanism (4) is suitable for being inserted along the width direction of the cutting platform (3) so that the first station (43) inserts the new film material and the second station (44) inserts the old film material; The floating plate (42) is suitable for descending to push the flattening assembly (45) to unfold along the width direction of the membrane material, and flatten the new membrane material and the old membrane material respectively; and The slitting knife (46) is suitable for slitting the old film material and the new film material in sequence; The flattening assembly (45) comprises two flattening rods (451) arranged in a mirror image, the top ends of the two flattening rods (451) are hinged, and the bottom ends are integrally provided with a flattening block (452); The bottom of the partition bracket (41) is provided with a guide groove (411), and the flattening block (452) is slidably arranged in the guide groove (411); A movable protrusion (421) is elastically provided on one side of the floating plate (42) facing the flattening rod (451); and When the floating plate (42) descends, the movable protrusion (421) contacts the flattening rod (451) and pushes the flattening rod (451) to drive the flattening block (452) to expand to both sides respectively to flatten the new film material. Then the floating plate (42) descends until the flattening block (452) pushes the old film material to contact the movable protrusion (421) to flatten the old film material.

10. A method for conveying a base film, characterized in that: The transport method is performed using the bottom membrane transport system for membrane electrode according to any one of claims 1 to 8, and the transport method comprises: Step S1, when the old film material is being transported, the driving mechanism (2) pulls the film material on the material roll (1) to transport the film material so that the film material passes through the cutting platform (3); Step S2, when the new film material and the old film material are spliced, the splicing mechanism (4) is inserted along the width direction of the cutting platform (3) so that the first station (43) inserts the new film material and the second station (44) inserts the old film material. Then, the floating plate (42) descends to push the flattening component (45) to unfold along the width direction of the film material and flatten the new film material and the old film material respectively. Then, the slitting knife (46) cuts the old film material and the new film material in sequence. Step S3, butting the cuts of the new membrane material and the old membrane material, and connecting the cuts of the new membrane material and the old membrane material by double-sided adhesive at the waste of the old membrane material.

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