Tabletting device
By combining the gas diffusion layer strip with the base film strip and then cutting only the gas diffusion layer strip, the problems of poor cutting accuracy and dust were solved, achieving high-precision cutting and low dust.
Patent Information
- Application Number
- CN202520152926.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-01-22
AI Technical Summary
Traditional methods of cutting gas diffusion layer strips lack support, resulting in poor cutting accuracy and generating a large amount of dust.
A composite mechanism is used to combine the gas diffusion layer strip with the base film strip. The cutting mechanism only cuts half of the gas diffusion layer strip without cutting the base film strip. The base film strip is used as a support and conveyor. The adhesive layer contacts the waste material frame to reduce dust residue.
It improves cutting accuracy, reduces dust generation and residue, and lowers equipment complexity and cost.
Smart Images
Figure CN223977903U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fuel cell technology, and in particular to a fuel cell fabrication device. Background Technology
[0002] The membrane electrode assembly (MEA) is the core component of a fuel cell, also known as a seven-in-one module. A seven-in-one module includes a catalyst-coated membrane (CCM), frame sheets attached to both sides of the CCM, and a gas diffusion layer. Generally, a five-in-one module is obtained by first attaching frame sheets to both sides of the CCM, and then gas diffusion layer sheets are attached to both sides of the five-in-one module to obtain the seven-in-one module.
[0003] In traditional techniques, the gas diffusion layer strip is directly cut into gas diffusion layer sheets. However, the gas diffusion layer strip lacks support during cutting, resulting in poor cutting accuracy. In addition, traditional cutting methods generate a lot of dust during cutting, which has a significant negative impact. Utility Model Content
[0004] Therefore, it is necessary to provide a sheet-making device that can improve cutting accuracy and reduce dust in order to address the above problems.
[0005] A film-making apparatus, comprising:
[0006] The first unwinding mechanism is used to unwind the output gas diffusion layer strip;
[0007] The second unwinding mechanism is used to unwind and output the bottom support film strip, which includes a first bottom support film layer, a second bottom support film layer and an adhesive layer. The second bottom support film layer and the adhesive layer are both stacked on the same side of the first bottom support film layer, and the adhesive layer is located at both ends of the second bottom support film layer in the width direction of the bottom support film strip.
[0008] A composite mechanism is used to composite the gas diffusion layer strip with one side of the base film strip having the second base film layer, wherein both ends of the gas diffusion layer strip are respectively bonded to the adhesive layer to form a composite strip;
[0009] The composite strip is fed through a cutting mechanism and a peeling mechanism. The cutting mechanism is used to cut the gas diffusion layer strip in half to obtain a gas diffusion layer sheet attached to the second support film layer. The peeling mechanism is used to peel the gas diffusion layer sheet from the second support film layer.
[0010] In one embodiment, the gas diffusion layer tape unwound by the first unwinding mechanism has a protective film layer.
[0011] The sheet-making apparatus further includes a protective film winding mechanism, which is located between the first unwinding mechanism and the composite mechanism, and is used to wind up the protective film layer on the gas diffusion layer tape unwound by the first unwinding mechanism.
[0012] In one embodiment, the film-making apparatus further includes a first correction mechanism located between the first unwinding mechanism and the composite mechanism, for correcting the deviation of the gas diffusion layer tape before the gas diffusion layer tape is composited with the backing film tape.
[0013] and / or
[0014] The sheet-making apparatus further includes a second correction mechanism located between the second unwinding mechanism and the composite mechanism, for correcting the deviation of the base film strip before the gas diffusion layer strip is composited with the base film strip.
[0015] In one embodiment, the sheet-making apparatus further includes a first tension control mechanism located between the first unwinding mechanism and the composite mechanism for controlling the tension of the gas diffusion layer tape.
[0016] and / or
[0017] The film-making apparatus further includes a second tension control mechanism located between the second unwinding mechanism and the composite mechanism, for controlling the tension of the backing film strip.
[0018] In one embodiment, the cutting mechanism is a flat die-cutting mechanism.
[0019] In one embodiment, the sheet-making apparatus further includes a waste winding mechanism located downstream of the peeling mechanism for winding the composite strip after the gas diffusion layer sheet has been peeled off.
[0020] In one embodiment, the sheet-making apparatus further includes a finished product transfer mechanism, which is used to sequentially transfer the gas diffusion layer sheet material peeled off by the peeling mechanism to the testing station for testing and the unloading station for unloading.
[0021] In one embodiment, the sheet-making apparatus further includes a finished product inspection mechanism for inspecting the gas diffusion layer sheet material at the inspection station.
[0022] In one embodiment, the film-making apparatus further includes a qualified material box and a waste material box;
[0023] The sheet-making apparatus further includes a finished product handling mechanism, which picks up the gas diffusion layer sheet from the unloading station, and handles qualified gas diffusion layer sheets to the qualified material box and unqualified gas diffusion layer sheets to the waste material box.
[0024] In one embodiment, the sheet-making apparatus further includes a separator cassette, and the finished product transport mechanism is further configured to transport the separator paper in the separator cassette to the qualified product cassette, such that there is a separator paper between each two adjacent gas diffusion layer sheets.
[0025] The aforementioned sheet-making apparatus includes a composite mechanism that combines the gas diffusion layer strip and the support film strip to form a composite strip, and a cutting mechanism that partially cuts the composite strip to obtain gas diffusion layer sheets. During the partial cutting of the composite strip, only the gas diffusion layer strip is cut; the support film strip is not. The support film strip serves to fix, transport, and support the gas diffusion layer strip, reducing displacement during cutting and ensuring cutting accuracy. Furthermore, the adhesive layer only contacts the waste edge, preventing residual adhesive from remaining on the finished gas diffusion layer sheet. Simultaneously, some dust generated during cutting adheres to the support film strip and is output along with the waste edge. The support film strip not only removes waste but also reduces the adverse effects of dust. Attached Figure Description
[0026] Figure 1 This is a structural diagram of a film-making apparatus provided in one embodiment of this application;
[0027] Figure 2 This is a structural diagram of a composite strip formed by combining a gas diffusion layer strip and a base film strip.
[0028] Figure 3 This is a structural diagram of the bottom support film strip;
[0029] Figure 4 This is a structural diagram of the gas diffusion layer tape and the base film tape when they are about to be bonded together.
[0030] Figure 5 This is a structural diagram showing the separation of the gas diffusion layer sheet from the waste frame.
[0031] Figure 6 for Figure 1 The diagram shows the structure of the cutting mechanism of the sheet-making device when it partially cuts the composite strip.
[0032] Figure 7 A flowchart of a film preparation method provided in an embodiment of this application.
[0033] Explanation of reference numerals in the attached figures:
[0034] 100. Sheet making device; 10. First unwinding mechanism; 20. Second unwinding mechanism; 30. Composite mechanism; 31. Drive roller; 32. Matching roller; 40. Cutting mechanism; 50. Peeling mechanism; 60. Protective film winding mechanism; 70. First correction mechanism; 80. Second correction mechanism; 90. First tension control mechanism; 110. Second tension control mechanism; 120. Waste material winding mechanism; 130. Finished product transfer mechanism; 140. Finished product inspection mechanism; 150. Qualified product box; 160. Waste box; 170. Finished product handling mechanism; 180. Paper separator box; 200. Gas diffusion layer tape; 300. Base film tape; 301. First base film layer; 302. Second base film layer; 303. Adhesive layer; 400. Protective film layer; 500. Gas diffusion layer sheet; 600. Waste frame. Detailed Implementation
[0035] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0039] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0040] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0041] See Figure 1 One embodiment of this application provides a film-making apparatus 100, including a first unwinding mechanism 10 for unwinding and outputting a gas diffusion layer tape 200. Generally, the gas diffusion layer tape 200 is a carbon paper tape. It should be understood that in some other embodiments, the material of the gas diffusion layer tape 200 is not limited.
[0042] The film-making apparatus 100 also includes a second unwinding mechanism 20, which is used to unwind and output the bottom film strip 300. (See also...) Figure 2 and Figure 3 The backing film strip 300 includes a first backing film layer 301, a second backing film layer 302, and an adhesive layer 303, with the second backing film layer 302 and the adhesive layer 303 both stacked on the same side of the first backing film layer 301. In the width direction of the backing film strip 300 ( Figure 2In the left-right direction, the adhesive layer 303 is located at both ends of the second support film layer 302. That is, in the thickness direction of the support film strip 300 ( Figure 2 In the vertical direction, the second backing film layer 302 and the adhesive layer 303 both cover the same surface of the first backing film layer 301. Furthermore, in the width direction of the backing film strip 300, both ends of the second backing film layer 302 have adhesive layers 303. Specifically, the surfaces of the second backing film layer 302 and the adhesive layer 303 away from the first backing film layer 301 are flush. This ensures a good bonding effect between the backing film strip 300 and the gas diffusion layer strip 200 when they are combined. Of course, in other embodiments, the surfaces of the second backing film layer 302 and the adhesive layer 303 away from the first backing film layer 301 may not be flush; this is not limited here.
[0043] Optionally, the first support film layer 301 and the second support film layer 302 are integrally formed. Of course, the first support film layer 301 and the second support film layer 302 can also be separately provided and combined together by a composite method, which is not limited here.
[0044] The first support film layer 301 and the second support film layer 302 are made of a material with high toughness to improve the support effect; for example, they can be made of PET material with high toughness. The adhesive layer 303 is made of a material with good adhesion to improve the adhesion between the adhesive layer 303 and the first support film layer 301 and the gas diffusion layer tape 200; for example, the adhesive layer 303 can be made of UV material.
[0045] Continue reading Figure 1 The film-making apparatus 100 also includes a laminating mechanism 30, which is located downstream of the first unwinding mechanism 10 and the second unwinding mechanism 20. The laminating mechanism 30 is used to laminate the gas diffusion layer tape 200 with the side of the backing film tape 300 having the second backing film layer 302. When the gas diffusion layer tape 200 is laminated with the second backing film layer 302, the two ends of the gas diffusion layer tape 200 in the width direction are respectively bonded to the adhesive layers 303 at both ends. At this time, the gas diffusion layer tape 200 and the backing film tape 300 are laminated to form a composite tape. That is, the middle portion of the gas diffusion layer tape 200 in the width direction is laminated with the second backing film layer 302 located between the adhesive layers 303 at both ends, and the two ends of the gas diffusion layer tape 200 in the width direction are bonded to the first backing film layer 301 through the adhesive layers 303 at both ends. Generally, the width of the gas diffusion layer strip 200 is the same as the width of the backing film strip 300, so that the gas diffusion layer strip 200 is exactly aligned with the backing film strip 300 in the width direction (see...). Figure 2 and Figure 4 ).
[0046] Continue reading Figure 1The sheet-making apparatus 100 also includes a cutting mechanism 40 and a peeling mechanism 50. The cutting mechanism 40 is located between the laminating mechanism 30 and the peeling mechanism 50, and the laminating strip can flow sequentially through the cutting mechanism 40 and the peeling mechanism 50. The cutting mechanism 40 is used to partially cut the laminating strip to sever the gas diffusion layer strip 200 without cutting the backing film strip 300, so as to obtain the gas diffusion layer sheet 500 attached to the second backing film layer 302. That is, see reference. Figure 5 and Figure 6 When the cutting mechanism 40 cuts the composite strip, it only cuts the portion of the gas diffusion layer strip 200 that is bonded to the second support film layer 302, while leaving the portion bonded to the adhesive layer 303 uncut. It should be noted that as the composite strip is conveyed downstream, in the conveying direction of the composite strip, i.e., along its length, the cutting mechanism 40 can cut multiple gas diffusion layer sheets 500. (Continue reading...) Figure 5 The peeling mechanism 50 is used to peel the gas diffusion layer sheet 500 from the second support film layer 302. That is, under the action of the peeling mechanism 50, the gas diffusion layer sheet 500 formed by the cutting mechanism 40 can be separated from the waste frame 600 (the part of the gas diffusion layer strip 200 where the gas diffusion layer sheet 500 is not formed) and the second support film layer 302.
[0047] The sheet-making apparatus 100 provided in this embodiment of the application includes a composite mechanism 30 that can composite the gas diffusion layer strip 200 and the base film strip 300 to form a composite strip, and a cutting mechanism 40 that cuts the composite strip in half to obtain a gas diffusion layer sheet 500. During the half-cutting of the composite strip, only the gas diffusion layer strip 200 is cut; the base film strip 300 is not cut. The base film strip 300 serves to fix, transport, and support the gas diffusion layer strip 200, reducing displacement of the gas diffusion layer strip 200 during cutting and ensuring cutting accuracy. Furthermore, the adhesive layer 303 only contacts the waste material frame 600 to prevent residual adhesive from remaining on the finished gas diffusion layer sheet 500. Meanwhile, some of the dust generated during cutting will stick to the bottom support film belt 300 and be output, and the waste frame 600 will also be output with the bottom support film belt 300. The bottom support film belt 300 not only plays the role of carrying away waste, but also reduces the adverse effects of dust.
[0048] In some embodiments, see further reference. Figure 1The gas diffusion layer tape 200 unwound by the first unwinding mechanism 10 has a protective film layer 400. The sheet-making apparatus 100 also includes a protective film winding mechanism 60, which is located between the first unwinding mechanism 10 and the laminating mechanism 30, and is used to wind up the protective film layer 400 on the gas diffusion layer tape 200 unwound by the first unwinding mechanism 10. The protective film layer 400 can protect the gas diffusion layer of the gas diffusion layer tape 200. By winding up the protective film layer 400 before the gas diffusion layer tape 200 is laminated with the backing film tape 300, the protective film layer 400 is prevented from being attached to the gas diffusion layer sheet 500 formed by final cutting.
[0049] The film-making apparatus 100 also includes a first correction mechanism 70, which is located between the first unwinding mechanism 10 and the laminating mechanism 30. The first correction mechanism 70 corrects the deviation of the gas diffusion layer tape 200 before it is laminated with the backing film tape 300. By providing the first correction mechanism 70 to correct the deviation of the gas diffusion layer tape 200 before it enters the laminating mechanism 30, the lamination effect between the gas diffusion layer tape 200 and the backing film tape 300 can be guaranteed.
[0050] Furthermore, the film-making apparatus 100 also includes a second correction mechanism 80, which is located between the second unwinding mechanism 20 and the laminating mechanism 30. This second correction mechanism 80 corrects the deviation of the base film strip 300 before it is laminated with the gas diffusion layer strip 200. By providing the second correction mechanism 80 to correct the deviation of the base film strip 300 before it enters the laminating mechanism 300, the lamination effect between the gas diffusion layer strip 200 and the base film strip 300 can be further guaranteed.
[0051] In some embodiments, the film-making apparatus 100 further includes a first tension control mechanism 90, which is located between the first unwinding mechanism 10 and the composite mechanism 30, for controlling the tension of the gas diffusion layer tape 200 so that the gas diffusion layer tape 200 enters the composite mechanism 30 for composite with a suitable tension, thereby ensuring the composite effect of the gas diffusion layer tape 200 and the backing film tape 300.
[0052] Furthermore, the film-making apparatus 100 also includes a second tension control mechanism 110, which is located between the second unwinding mechanism 20 and the laminating mechanism 30. The second tension control mechanism 110 is used to control the tension of the backing film strip 300 so that the backing film strip 300 enters the laminating mechanism 300 for lamination with a suitable tension, thereby further ensuring the lamination effect of the gas diffusion layer strip 200 and the backing film strip 300.
[0053] Continue reading Figure 1The composite mechanism 30 includes a drive roller 31 and a mating roller 32, with a composite gap formed between them. The gas diffusion layer strip 200 and the base film strip 300 can pass through the composite gap and are composited under the extrusion action of the drive roller 31 and the mating roller 32. Simultaneously, during the composite process, the drive roller 31 provides the driving force to transport the composite strip downstream.
[0054] In some embodiments, the cutting mechanism 40 is a flatbed die-cutting mechanism, also called a plate die-cutting mechanism or a blade die-cutting mechanism. Flatbed die-cutting is a method of flat-pressing and die-cutting using a flatbed die. (Continue reading...) Figure 6 During cutting, the composite strip moves perpendicularly to the blade, and the blade presses down vertically to partially cut the composite strip, meaning only the gas diffusion layer strip 200 of the composite strip is switched without cutting the base film strip 300. The cutting mechanism 40 adopts a flat die-cutting mechanism, which reduces dust generation, lowers equipment costs, and improves the yield of subsequent packaging processes compared to laser cutting (laser cutting generates a large amount of dust, and a small amount of carbon fiber filaments are inserted into the carbon pores during the laser cutting process, which may cause defects in subsequent packaging processes; in addition, equipment using lasers is relatively expensive). Compared to metal die-cutting (metal die-cutting requires the metal die to be installed above the correction platform, which greatly increases the complexity of the mechanism and the difficulty of debugging; in addition, metal die-cutting also requires more time during shape change), it greatly reduces the complexity of the equipment and the difficulty of debugging, and also reduces the time consumed during shape change.
[0055] After the gas diffusion layer sheet 500 is formed by half-cutting, the peeling mechanism 50 removes the adhesion between the gas diffusion layer sheet 500 and the second support film layer 302 and the waste frame 600. In this application, the specific configuration of the peeling mechanism 50 is not limited, as long as it can separate the gas diffusion layer sheet 500 from the second support film layer 302 and the waste frame 600.
[0056] In some embodiments, see further reference. Figure 1 The sheet-making apparatus 100 also includes a waste winding mechanism 120, which is located downstream of the peeling mechanism 50 and is used to wind up the composite strip after peeling the gas diffusion layer sheet 500 for recycling.
[0057] In some embodiments, the sheet-making apparatus 100 further includes a finished product transfer mechanism 130, which is used to sequentially transfer the gas diffusion layer sheet material 500 peeled off by the peeling mechanism 50 to the inspection station for inspection and the unloading station for unloading, so as to determine whether the gas diffusion layer sheet material 500 is a qualified product and to unload it after inspection. Specifically, the finished product transfer mechanism 130 includes a conveyor belt and multiple conveyor rollers. The conveyor belt is sleeved on the multiple conveyor rollers, and the conveyor rollers drive the conveyor belt to move to transfer the gas diffusion layer sheet material 500.
[0058] Optionally, in some embodiments, the peeling mechanism 50 not only has the function of peeling off the gas diffusion layer sheet 500, but also can transfer the peeled gas diffusion layer sheet 500 to the finished product transfer mechanism 130. In other embodiments, the peeling mechanism 50 only has the function of peeling off the gas diffusion layer sheet 500, and a separate structure is used to transfer the gas diffusion layer sheet 500 peeled off by the peeling mechanism 500 to the finished product transfer mechanism 130.
[0059] The sheet-making apparatus 100 also includes a finished product inspection mechanism 140, which is used to inspect the gas diffusion layer sheet 500 at the inspection station to determine whether the gas diffusion layer sheet 500 is a qualified product.
[0060] The sheet-making apparatus 100 also includes a qualified material box 150 and a waste material box 160. The sheet-making apparatus 100 also includes a finished product conveying mechanism 170, which can pick up the gas diffusion layer sheet material 500 from the unloading station and convey it to the qualified material box 150 or the waste material box 160 to classify and place the gas diffusion layer sheet material 500.
[0061] Furthermore, the sheet-making apparatus 100 also includes a separator cassette 180 for holding separator sheets. The finished product transport mechanism 170 is also used to transport the separator sheets in the separator cassette 180 to the qualified product cassette 150, so that there is a separator sheet between every two adjacent gas diffusion layer sheets 500. This is to avoid retrieving two finished products in the next process.
[0062] See Figure 7 Another embodiment of this application also provides a film preparation method, including the steps of:
[0063] S110: Unwinding output gas diffusion layer strip 200;
[0064] S120: Unwind and output the support film strip 300. The support film strip 300 includes a first support film layer 301, a second support film layer 302, and an adhesive layer 303. The second support film layer 302 and the adhesive layer 303 are both stacked on the same side of the first support film layer 301, and in the width direction of the support film strip 300, the adhesive layer 303 is located at both ends of the second support film layer 302. That is, in the thickness direction of the support film strip 300, the second support film layer 302 and the adhesive layer 303 both cover the same surface of the first support film layer 301, and in the width direction of the support film strip 300, both ends of the second support film layer 302 have adhesive layers 303. Specifically, the surfaces of the second backing film layer 302 and the adhesive layer 303 that are furthest from the first backing film layer 301 are flush. This ensures a good bonding effect between the backing film strip 300 and the gas diffusion layer strip 200 when they are laminated. Of course, in other embodiments, the surfaces of the second backing film layer 302 and the adhesive layer 303 that are furthest from the first backing film layer 301 may not be flush; this is not a limitation here.
[0065] S130: The gas diffusion layer tape 200 is laminated with the side of the backing film tape 300 having the second backing film layer 302. Both ends of the gas diffusion layer tape 200 are bonded to adhesive layers 303 to form a composite tape. Specifically, the middle portion of the gas diffusion layer tape 200 in the width direction is laminated with the second backing film layer 302 located between the adhesive layers 303 at both ends, and both ends of the gas diffusion layer tape 200 in the width direction are bonded to the first backing film layer 301 through the adhesive layers 303 at both ends. Generally, the width of the gas diffusion layer tape 200 is the same as the width of the backing film tape 300, so that the gas diffusion layer tape 200 is precisely laminated with the backing film tape 300 in the width direction.
[0066] S140: The composite strip is partially cut to sever the gas diffusion layer strip 200, resulting in a gas diffusion layer sheet 500 attached to the second backing film layer 302. That is, when cutting the composite strip, only the portion of the gas diffusion layer strip 200 that is composited with the second backing film layer 302 is cut, while the portion bonded to the adhesive layer 303 is not cut. It should be noted that as the composite strip is conveyed downstream, the cutting mechanism 40 can cut multiple gas diffusion layer sheets 500 along the conveying direction of the composite strip, i.e., along its length.
[0067] S150: Peel the gas diffusion layer sheet 500 from the second backing film layer 302.
[0068] The sheet-making method provided in this application embodiment combines a gas diffusion layer strip 200 and a support film strip 300 to form a composite strip, and then cuts the composite strip in half to obtain a gas diffusion layer sheet 500. During the half-cutting of the composite strip, only the gas diffusion layer strip 200 is cut; the support film strip 300 is not cut. The support film strip 300 serves to fix, transport, and support the gas diffusion layer strip 200, reducing displacement of the gas diffusion layer strip 200 during cutting and ensuring cutting accuracy. Furthermore, the adhesive layer 303 only contacts the waste frame 600, preventing residual adhesive from remaining on the finished gas diffusion layer sheet 500. Simultaneously, some dust generated during cutting adheres to the support film strip 300 and is output along with the waste frame 600. The support film strip 300 not only carries away waste but also reduces the adverse effects of dust.
[0069] In some embodiments, step S140 includes:
[0070] The gas diffusion layer strip 200 is cut by a flat die-cutting mechanism to obtain the gas diffusion layer sheet 500 attached to the second base film layer 302.
[0071] The flatbed die-cutting mechanism, also known as the plate die-cutting mechanism or blade die-cutting mechanism, is a method of flat-press die-cutting using a flatbed die. During cutting, the composite strip moves perpendicularly to the blade, and the blade presses down vertically to partially cut the composite strip, meaning that only the gas diffusion layer strip 200 of the composite strip is switched, without cutting the base film strip 300. The cutting mechanism 40 adopts a flat die-cutting mechanism, which reduces dust generation, lowers equipment costs, and improves the yield of subsequent packaging processes compared to laser cutting (laser cutting generates a large amount of dust, and a small amount of carbon fiber filaments are inserted into the carbon pores during the cutting process, which may cause defects in subsequent packaging processes; in addition, equipment using lasers is relatively expensive). Compared to metal die-cutting (metal die-cutting requires the metal die to be installed above the correction platform, which greatly increases the complexity of the mechanism and the difficulty of debugging; at the same time, metal die-cutting also requires more time when changing shapes), it greatly reduces the complexity of the equipment and the difficulty of debugging, and also reduces the time consumed when changing shapes.
[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0073] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A tabletting apparatus, characterized in that, The application relates to a sheet manufacturing device. The device comprises: a first unwinding mechanism (10) for unwinding and outputting a gas diffusion layer tape (200); a second unwinding mechanism (20) for unwinding and outputting a supporting film tape (300), the supporting film tape (300) comprising a first supporting film layer (301), a second supporting film layer (302) and a glue layer (303), the second supporting film layer (302) and the glue layer (303) being stacked on the same side of the first supporting film layer (301), and in the width direction of the supporting film tape (300), the glue layer (303) is located at both ends of the second supporting film layer (302); a composite mechanism (30) for compositing the gas diffusion layer tape (200) with the side of the supporting film tape (300) with the second supporting film layer (302), and the two ends of the gas diffusion layer tape (200) are bonded with the glue layer (303) respectively, so as to form a composite tape; 2. The tabletting apparatus according to claim 1, characterized in that a cutting mechanism (40) and a stripping mechanism (50) through which the composite tape flows in sequence, the cutting mechanism (40) is used for half-cutting the composite tape to cut off the gas diffusion layer tape (200), so as to obtain a gas diffusion layer sheet material (500) attached to the second supporting film layer (302), and the stripping mechanism (50) is used for stripping the gas diffusion layer sheet material (500) from the second supporting film layer (302). The gas diffusion layer tape (200) unwound and output by the first unwinding mechanism (10) has a protective film layer (400); 3. The tabletting apparatus of claim 1, wherein The sheet manufacturing device further comprises a protective film winding mechanism (60) located between the first unwinding mechanism (10) and the composite mechanism (30), which is used for winding the protective film layer (400) on the gas diffusion layer tape (200) unwound and output by the first unwinding mechanism (10). The sheet manufacturing device further comprises a first deviation rectifying mechanism (70) located between the first unwinding mechanism (10) and the composite mechanism (30), which is used for rectifying the deviation of the gas diffusion layer tape (200) before the gas diffusion layer tape (200) is composited with the supporting film tape (300); and / or 4. The tabletting apparatus of claim 1, wherein The sheet manufacturing device further comprises a second deviation rectifying mechanism (80) located between the second unwinding mechanism (20) and the composite mechanism (30), which is used for rectifying the deviation of the supporting film tape (300) before the gas diffusion layer tape (200) is composited with the supporting film tape (300). The sheet manufacturing device further comprises a first tension control mechanism (90) located between the first unwinding mechanism (10) and the composite mechanism (30), which is used for controlling the tension of the gas diffusion layer tape (200); and / or The sheet manufacturing device further comprises a second tension control mechanism (90) located between the second unwinding mechanism (20) and the composite mechanism (30), which is used for controlling the tension of the supporting film tape (300). The tabletting device further comprises a second tension control mechanism (110) located between the second unwinding mechanism (20) and the laminating mechanism (30) for controlling the tension of the backing film material belt (300).
5. The tabletting apparatus of claim 1, wherein The cutting mechanism (40) is a flat knife die cutting mechanism.
6. The tabletting apparatus of claim 1, wherein The tabletting device further comprises a waste material winding mechanism (120) located downstream of the peeling mechanism (50) for winding the composite material belt after the gas diffusion layer sheet material (500) is peeled.
7. The tabletting apparatus of claim 1, wherein The tabletting device further comprises a finished product transfer mechanism (130) for sequentially transferring the gas diffusion layer sheet material (500) peeled by the peeling mechanism (50) to a detection station for detection and to a discharging station for discharging.
8. The tabletting apparatus according to claim 7, characterized in that The tabletting device further comprises a finished product detection mechanism (140) for detecting the gas diffusion layer sheet material (500) at the detection station.
9. The tabletting apparatus of claim 7, wherein, The tabletting device further comprises a qualified product material box (150) and a waste material box (160). The tabletting device further comprises a finished product carrying mechanism (170) for picking up the gas diffusion layer sheet material (500) from the discharging station and carrying the qualified gas diffusion layer sheet material (500) to the qualified product material box (150) and carrying the unqualified gas diffusion layer sheet material (500) to the waste material box (160).
10. The tabletting apparatus of claim 9, wherein, The tabletting device further comprises a separator paper material box (180), and the finished product carrying mechanism (170) is further used for carrying the separator paper in the separator paper material box (180) to the qualified product material box (150), so that each adjacent two gas diffusion layer sheet materials (500) have the separator paper therebetween.