Gas diffusion layer slitting and cutting assembly and slitting and cutting machine
By using adhesive tape and a leveling mechanism in a gas diffusion layer cutting device, the problems of low cutting accuracy and deviation are solved, and high-precision cutting and efficient production are achieved.
Patent Information
- Application Number
- CN202422582032.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-10-24
AI Technical Summary
The existing gas diffusion layer cutting device has low cutting accuracy and is prone to deviation during the cutting process.
Adhesive tape is used to bond with the gas diffusion layer. The adhesive tape moves with the diffusion layer and provides a reference for the cutting direction. Combined with the leveling mechanism and the guiding mechanism, the cutting accuracy and stability are ensured.
It improves cutting accuracy, reduces scrap breakage and dust generation, and improves production efficiency and cutting quality.
Smart Images
Figure CN223328738U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas diffusion layer processing, in particular to a gas diffusion layer strip cutting component and a strip cutting machine. Background Art
[0002] A proton exchange membrane fuel cell (PEMFC) is a power generation device that converts chemical energy directly into electrical energy. It features fast start-up, high energy density, and environmental friendliness, making it an ideal alternative for various stationary and mobile power applications. The core components of a PEMFC are the membrane electrode, which consists of the proton exchange membrane, the cathode and anode catalyst layers, the cathode and anode frame membranes, and the cathode and anode gas diffusion layers (GDLs). The GDL plays a crucial role in fuel cells, responsible for electron conduction between the catalyst layer and the bipolar plates, efficient gas transport to the catalyst layer, maintaining the wettability of the PEM membrane, and effectively managing water to prevent flooding. The GDL consists of a support layer and a microporous layer. The support layer is typically composed of hydrophobic-treated carbon paper or carbon cloth. Therefore, fuel cell MEM processing requires cutting the GDL. However, existing cutting equipment suffers from issues such as misalignment and low cutting accuracy during the GDL cutting process.
[0003] Therefore, the prior art lacks a gas diffusion layer cutting and winding machine capable of cutting with high precision. Utility Model Content
[0004] A technical problem to be solved by the utility model is that the cutting precision of the gas diffusion layer cutting and winding machine in the prior art is low.
[0005] In order to solve the above technical problems, an embodiment of the present invention provides a gas diffusion layer cutting and winding machine, in which the gas diffusion layer can move along the support surface. The gas diffusion layer cutting and winding machine also includes at least two adhesive tapes, one end of the adhesive tape is connected to the gas diffusion layer, and the other end of the adhesive tape is connected to the winding body of the adhesive tape. The winding body rotates as the gas diffusion layer moves so that the length of the adhesive tape adhered to the gas diffusion layer becomes longer.
[0006] In some embodiments, the gas diffusion layer strip cutting assembly further includes a flattening mechanism, which is arranged in the forward direction of the gas diffusion layer, above or below the adhesive tape and presses the adhesive tape against the surface of the gas diffusion layer.
[0007] In some embodiments, the leveling mechanism includes a support seat and a leveling portion. The support seat is fixedly connected to the support surface. The leveling portion passes through the support seat and can rotate relative to the support seat. The leveling portion presses the adhesive tape against the surface of the gas diffusion layer.
[0008] In some embodiments, the leveling mechanism includes two support seats, which are respectively arranged on both sides of the support surface, and the two ends of the leveling portion pass through the two support seats respectively; and / or,
[0009] The leveling mechanism also includes a rotating shaft. An arc groove is provided in the leveling portion. The rotating shaft passes through the arc groove and the support seat. The rotating shaft moves in the arc groove to change the angle between the leveling portion and the support surface.
[0010] In some embodiments, the gas diffusion layer strip cutting assembly further includes a bracket and a roller, the bracket is fixedly connected to the support surface, the roller is fixedly connected to the bracket, and the winding body can rotate relative to the roller.
[0011] In some embodiments, the gas diffusion layer strip cutting assembly further includes a guide shaft and a fixing seat, the fixing seat is fixedly connected to the support surface, the guide shaft passes through the fixing seat, and the adhesive tape slides on the outside of the guide shaft to rotate the guide shaft.
[0012] In some embodiments, the gas diffusion layer strip cutting assembly further includes a guide ring, which is sleeved on the guide shaft and arranged on both sides of the adhesive tape.
[0013] In some embodiments, the angle between the adhesive tape between the roller and the guide shaft and the support surface is 60° to 75°; and / or,
[0014] The diameter of the rollers and / or the distance between adjacent guide rings can be adjusted.
[0015] In some embodiments, the portions of the adhesive tape on the gas diffusion layer are parallel to each other; and / or,
[0016] The distance between adjacent adhesive strips can be adjusted.
[0017] The utility model also provides a strip cutting machine, which comprises a gas diffusion layer strip cutting component.
[0018] Through the above-described technical solution, the adhesive tape provided by the present invention moves along with the movement of the gas diffusion layer during its movement. Once bonded, the tape enters the next process flow, where cutting is performed along both sides of the tape. The tape provides a directional reference for cutting, improving cutting accuracy. Furthermore, the adhesive force generated by the adhesive tape after being bonded to the gas diffusion layer prevents the gas diffusion layer from shifting during processing or cutting, further improving cutting accuracy. Furthermore, the material produced during cutting is located between adjacent adhesive tapes, and the leftover material is also bonded with adhesive tape, making it easier to wind up the leftover material, preventing it from breaking during winding, and reducing the amount of dust generated, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0020] Figure 1 This is a three-dimensional structural diagram of a gas diffusion layer cutting assembly according to an embodiment of the present utility model;
[0021] Figure 2 yes Figure 1 Schematic diagram of part of the three-dimensional structure.
[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the adhesive tape according to an embodiment of the present utility model;
[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the guide ring part of an embodiment of the utility model;
[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the leveling portion of an embodiment of the utility model.
[0025] Description of Reference Numerals
[0026] 1. Gas diffusion layer strip cutting assembly; 2. Support surface; 3. Adhesive tape; 4. Gas diffusion layer; 5. Leveling mechanism; 51. Support seat; 52. Leveling portion; 53. Rotating shaft; 54. Arc groove; 6. Bracket; 7. Roller; 8. Guide shaft; 81. Guide ring; 9. Fixed seat. DETAILED DESCRIPTION
[0027] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are intended to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention. The present invention can be implemented in many different forms and is not limited to the specific embodiments of the present invention herein, but includes all technical solutions within the scope of the claims.
[0028] The present invention provides these embodiments to make the present invention thorough and complete, and to fully convey the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangements of parts and steps, material components, numerical expressions and numerical values described in these embodiments should be interpreted as merely exemplary and not as limiting.
[0029] It should be noted that, in the description of this utility model, unless otherwise specified, "plurality" means greater than or equal to two; terms such as "upper," "lower," "left," "right," "inner," and "outer" indicating directions or positional relationships are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on this utility model. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0030] In addition, the terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are simply used to distinguish different parts. "Perpendicular" does not mean perpendicular in the strict sense, but rather means that the positions are within the tolerance range. "Parallel" does not mean parallel in the strict sense, but rather means that the positions are within the tolerance range. "Include" or "comprising" and similar terms mean that the elements listed before the word include the elements listed after the word, and do not exclude the possibility that other elements may also be included.
[0031] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intervening device between the specific device and the first or second device.
[0032] All terms used in this utility model have the same meaning as those understood by ordinary technicians in the field to which this utility model belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.
[0033] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.
[0034] The present invention provides a cutting and winding machine for a gas diffusion layer 4. Figure 1-Figure 5As shown, the gas diffusion layer 4 can move along the supporting surface 2, and the gas diffusion layer 4 cutting and winding machine also includes at least two adhesive tapes 3, one end of the adhesive tape 3 is connected to the gas diffusion layer 4, and the other end of the adhesive tape 3 is connected to the winding body of the adhesive tape 3, and the winding body rotates as the gas diffusion layer 4 moves so that the length of the adhesive tape 3 bonded to the gas diffusion layer 4 becomes longer.
[0035] Specifically, such as Figure 1 As shown, four adhesive tapes 3 are used as an illustration, but the number is not limited to four. The gas diffusion layer 4 between two adjacent adhesive tapes 3 is required after cutting, and the gas diffusion layer 4 located on the two extreme sides will produce scraps after cutting. The adhesive tape 3 moves along with the movement of the gas diffusion layer 4 during the movement of the gas diffusion layer 4. When the adhesive tape 3 is bonded, it enters the next process flow, and the cutting is carried out along the two sides of the adhesive tape 3. The adhesive tape 3 can provide a reference for the cutting direction, thereby improving the cutting accuracy. On the other hand, after the adhesive tape 3 is bonded to the gas diffusion layer 4, the bonding force generated after bonding avoids the displacement of the gas diffusion layer 4 during the processing or cutting process, thereby further improving the cutting accuracy. In addition, the materials produced during the cutting process are located between adjacent adhesive tapes 3, and multiple strips are produced after cutting and rolled up. The scraps produced after cutting are also adhered with adhesive tapes 3, making it more convenient to roll up the scraps. The scraps will not break during the rolling process, and the amount of dust generated is reduced, which improves production efficiency and avoids pollution to the surrounding environment and products.
[0036] In some embodiments, the gas diffusion layer strip cutting assembly 1 further includes a flattening mechanism 5, which is positioned in the forward direction of the gas diffusion layer 4. The flattening mechanism 5 is positioned above or below the adhesive tape 3 and presses the adhesive tape 3 against the surface of the gas diffusion layer 4. The flattening mechanism 5 flattens the gas diffusion layer 4 to ensure a uniform surface and reduce the problem of low cutting accuracy caused by an uneven surface of the gas diffusion layer 4. Appropriate pressure is applied to the gas diffusion layer 4 to enhance its structural stability, ensuring that the adhesive tape 3 is evenly bonded to the gas diffusion layer 4, thereby enabling the gas diffusion layer 4 to withstand various mechanical stresses during fuel cell operation. Furthermore, the flattening mechanism 5 can eliminate stress concentration within the material, thereby reducing deformation or damage caused by internal stress during use.
[0037] In some embodiments, the flattening mechanism 5 includes a support base 51 and a flattening portion 52. The support base 51 is fixedly connected to the support surface 2. The flattening portion 52 passes through the support base 51 and is rotatable relative to the support base 51. The flattening portion 52 presses the adhesive tape 3 against the surface of the gas diffusion layer 4. The flattening portion 52 can rotate relative to the support base 51, allowing adjustment based on different cutting requirements and the width of the gas diffusion layer 4, increasing the adaptability and flexibility of the flattening mechanism 5. The rotation of the flattening portion 52 effectively presses the adhesive tape 3 against the gas diffusion layer 4, ensuring the flatness of the material and further improving cutting accuracy.
[0038] In some embodiments, the leveling mechanism 5 includes two support seats 51, which are respectively arranged on both sides of the support surface 2, and the two ends of the leveling portion 52 pass through the two support seats 51 respectively; the two support seats 51 provide a stable support basis for the leveling portion 52, ensuring stability and reliability during the leveling process, so that the gas diffusion layer 4 can be more uniformly and stably leveled.
[0039] In some embodiments, the leveling mechanism further includes a rotating shaft 53, and an arc-shaped groove 54 is provided in the leveling portion 52. Figure 5 As shown, the rotating shaft 53 passes through the arcuate slot 54 and the support seat 51. The rotating shaft 53 moves within the arcuate slot 54 to adjust the angle between the flattening portion 52 and the support surface 2. The movement of the rotating shaft 53 within the arcuate slot 54 allows the angle between the flattening portion 52 and the support surface 2 to vary, thereby accommodating gas diffusion layers 4 of varying thicknesses and widths, thereby improving the adaptability and flexibility of the leveling mechanism 5. By adjusting the angle of the flattening portion 52, the adhesive tape 3 can be more tightly pressed, ensuring the flatness of the gas diffusion layer 4 during the leveling process. Furthermore, precise leveling reduces material waste caused by improper leveling, reduces scrap rates, and lowers production costs. The design of the rotating shaft 53 and the arcuate slot 54 is simple and reliable, making it easy to maintain and operate.
[0040] In some embodiments, the gas diffusion layer strip cutting assembly 1 further includes a bracket 6 and a roller 7. The bracket 6 is fixedly connected to the support surface 2, and the roller 7 is fixedly connected to the bracket 6. The winding body can rotate relative to the roller 7. This allows the position and tension of the winding body to be adjusted according to cutting requirements, making the cutting process more flexible and controllable. Figure 1 As shown, two sets of brackets 6 and rollers 7 are provided to facilitate adjustment of the tension of each adhesive tape 3 and the width between adjacent adhesive tapes 3. The brackets 6 and rollers 7 have a simple structural design, facilitating maintenance and adjustment, helping to reduce maintenance costs and improve equipment stability. They can accommodate gas diffusion layer 4 materials of varying widths and properties, increasing the versatility and applicability of the cutting assembly.
[0041] In some embodiments, the gas diffusion layer strip cutting assembly 1 also includes a guide shaft 8 and a fixed seat 9, the fixed seat 9 is fixedly connected to the support surface 2, the guide shaft 8 passes through the fixed seat 9, and the adhesive tape 3 slides on the outside of the guide shaft 8 to rotate the guide shaft 8. The setting of the guide shaft 8 and the fixed seat 9 provides a stable guide for the adhesive tape 3 during the cutting process, ensuring the accuracy of the cutting operation and avoiding material waste; the winding body can rotate relative to the guide shaft 8, and the position and tension of the winding body can be adjusted according to the cutting requirements, making the cutting process more flexible and controllable. The guide shaft 8 allows continuous or rapid cutting, reduces the downtime during the cutting process, and improves production efficiency.
[0042] In some embodiments, as Figure 4 As shown, the gas diffusion layer strip cutting assembly 1 also includes guide rings 81, which are mounted on the guide shaft 8 and are located on either side of the adhesive tape 3. These guide rings 81 limit the movement of the adhesive tape 3. The adhesive tape 3 rotates about the guide shaft 8, limiting its position in three directions. This further improves the accuracy of the moving direction of the adhesive tape 3 and ensures the precise bonding of the adhesive tape 3 to the gas diffusion layer 4. After being guided by the guide rings 81 and smoothed by the smoothing mechanism, the surfaces of the gas diffusion layer 4 and the adhesive tape 3 are further smoothed. The guide rings 81 further precisely align the adhesive tape 3, preventing it from shifting during the bonding process.
[0043] In some embodiments, as Figure 1 As shown, the angle between the adhesive tape 3 located between the roller 7 and the guide shaft 8 and the support surface 2 is 60° to 75°; setting this angle can accurately control the placement and cutting of the adhesive tape 3, which helps to maintain the overall structural stability of the adhesive tape 3 during the bonding process, reduce deformation during operation, realize automated production, and improve production efficiency.
[0044] In some embodiments, the diameter of the roller 7 and / or the distance between adjacent guide rings 81 can be adjusted. This can accommodate gas diffusion layer 4 materials of different widths and properties, and can also be tailored to desired gas diffusion layers 4 of different widths or thicknesses, thereby increasing the versatility and applicability of the tailoring assembly.
[0045] In some embodiments, the portions of the adhesive tape 3 on the gas diffusion layer 4 are parallel to each other; the parallel adhesive tapes 3 ensure consistency and accuracy during the cutting process, reduce errors, and thus improve the cutting quality. Through precise parallel cutting, the gas diffusion layer 4 material can be maximized and material waste can be reduced; the design of the parallel adhesive tapes 3 is conducive to the implementation of an automated cutting system, thereby improving production efficiency and consistency.
[0046] In some embodiments, the distance between adjacent adhesive tapes 3 can be adjusted, so that the cutting assembly can adapt to gas diffusion layer 4 materials of different widths and properties, thereby increasing the versatility and applicability of the cutting assembly.
[0047] The present invention also provides a slitting machine, comprising a cutting mechanism, the aforementioned gas diffusion layer slitting assembly 1, and a winding mechanism. The adhesive tape 3 follows the movement of the gas diffusion layer 4 as it moves. After the adhesive tape 3 is bonded, it enters the next process. The cutting mechanism cuts along both sides of the adhesive tape 3. The adhesive tape 3 provides a directional reference for cutting, improving cutting accuracy. Furthermore, the adhesive force generated by the adhesive tape 3 after bonding to the gas diffusion layer 4 prevents the gas diffusion layer 4 from shifting during processing or cutting, further improving cutting accuracy. Furthermore, the material produced during the cutting process is located between adjacent adhesive tapes 3, resulting in multiple strips that are then wound up. The scraps produced after cutting are also bonded to the adhesive tape 3. The winding mechanism winds up the scraps, making it easier to wind up the scraps, preventing them from breaking during winding, and reducing the amount of dust generated, thereby improving production efficiency.
[0048] Thus far, various embodiments of the present invention have been described in detail. To avoid obscuring the concept of the present invention, some details well known in the art have not been described. Based on the above description, those skilled in the art will fully understand how to implement the technical solutions of the present invention.
[0049] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts.
Claims
1. A gas diffusion layer strip cutting assembly (1), wherein the gas diffusion layer (4) is movable along a support surface (2), characterized in that: include: At least two adhesive tapes (3), one end of each adhesive tape (3) is connected to the gas diffusion layer (4), and the other end of each adhesive tape (3) is connected to a winding body of the adhesive tape (3), wherein the winding body rotates as the gas diffusion layer (4) moves so that the length of the adhesive tape (3) bonded to the gas diffusion layer (4) becomes longer.
2. The gas diffusion layer strip cutting assembly (1) according to claim 1, characterized in that: The gas diffusion layer strip cutting assembly (1) further comprises a flattening mechanism (5), which is arranged in the forward direction of the gas diffusion layer (4), and is arranged above or below the adhesive tape (3). The flattening mechanism (5) presses the adhesive tape (3) against the surface of the gas diffusion layer (4).
3. The gas diffusion layer strip cutting assembly (1) according to claim 2, characterized in that: The leveling mechanism (5) includes a support seat (51) and a leveling portion (52), wherein the support seat (51) is fixedly connected to the support surface (2), and the leveling portion (52) passes through the support seat (51). The leveling portion (52) can rotate relative to the support seat (51), and the leveling portion (52) presses the adhesive tape (3) against the surface of the gas diffusion layer (4).
4. The gas diffusion layer strip cutting assembly (1) according to claim 3, characterized in that: The leveling mechanism (5) comprises two support seats (51), the two support seats (51) are respectively arranged on both sides of the support surface (2), and the two ends of the leveling portion (52) respectively pass through the two support seats (51); and / or, The leveling mechanism further comprises a rotating shaft (53), an arcuate groove (54) is provided in the leveling portion (52), the rotating shaft (53) passes through the arcuate groove (54) and the support seat (51), and the rotating shaft (53) moves in the arcuate groove (54) to change the angle between the leveling portion (52) and the support surface (2).
5. The gas diffusion layer strip cutting assembly (1) according to claim 1 or 2, characterized in that: The gas diffusion layer strip cutting assembly (1) further comprises a bracket (6) and a roller (7), wherein the bracket (6) is fixedly connected to the support surface (2), the roller (7) is fixedly connected to the bracket (6), and the winding body is capable of rotating relative to the roller (7).
6. The gas diffusion layer strip cutting assembly (1) according to claim 5, characterized in that: The gas diffusion layer strip cutting assembly (1) further comprises a guide shaft (8) and a fixing seat (9), wherein the fixing seat (9) is fixedly connected to the support surface (2), the guide shaft (8) passes through the fixing seat (9), and the adhesive tape (3) slides on the outside of the guide shaft (8) to enable the guide shaft (8) to rotate.
7. The gas diffusion layer strip cutting assembly (1) according to claim 6, characterized in that: The gas diffusion layer strip cutting assembly (1) further comprises a guide ring (81), wherein the guide ring (81) is sleeved on the guide shaft (8), and the guide ring (81) is arranged on both sides of the adhesive tape (3).
8. The gas diffusion layer strip cutting assembly (1) according to claim 7, characterized in that: The angle between the adhesive tape (3) located between the roller (7) and the guide shaft (8) and the support surface (2) is 60° to 75°; and / or, The diameter of the roller (7) and / or the distance between adjacent guide rings (81) can be adjusted.
9. The gas diffusion layer strip cutting assembly (1) according to claim 1 or 2, characterized in that: The portions of the adhesive tape (3) on the gas diffusion layer (4) are parallel to each other; and / or, The distance between adjacent adhesive tapes (3) can be adjusted.
10. A strip cutting machine, characterized in that: The slitting machine comprises a gas diffusion layer slitting assembly (1) according to any one of claims 1 to 9.