Integrated clamp for printing and drying fuel cell diffusion layer

Abstract

The utility model discloses an integrated fixture for printing and drying a diffusion layer of a fuel cell, which comprises a high-temperature-resistant bottom plate, a high-temperature-resistant cover plate is hinged on the high-temperature-resistant bottom plate, one end of the high-temperature-resistant cover plate hinged with the high-temperature-resistant bottom plate is a hinged end, and a through notch is arranged on the high-temperature-resistant cover plate. The end, opposite to the hinged end, of the high-temperature-resistant cover plate is an open end communicated with the through groove opening, a boss allowing the carbon paper to be completely placed is arranged in the middle of the high-temperature-resistant bottom plate, and when the high-temperature-resistant cover plate and the high-temperature-resistant bottom plate are closed, the boss and the through groove opening of the high-temperature-resistant cover plate are located at the same center position. The width of the boss is smaller than that of the through notch of the high-temperature-resistant cover plate, a circle of extending thin plate for limiting the carbon paper is arranged on the inner frame plate wall of the high-temperature-resistant cover plate, and when the high-temperature-resistant cover plate and the high-temperature-resistant bottom plate are closed, the extending thin plate is located above the position, close to the edge end, of the boss; and meanwhile, the carbon paper clamp is suitable for the printing work of a screen printing machine and the drying work of a tunnel drying oven.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel cell field especially relates to a kind of integrated fixture for fuel cell diffusion layer printing and drying. BACKGROUND

[0002] Fuel cell is a kind of chemical energy existing in fuel and oxidant is directly converted into electric energy power generation device, it is mainly by proton exchange membrane, diffusion layer and catalyst layer is formed, wherein, diffusion layer is prepared by carbon paper is coated with paste after drying process, such as paste coating in diffusion layer preparation process is generally realized by silk screen printing machine, drying is realized by tunnel oven, since diffusion layer is relatively light and thin, cannot directly place a carbon paper in silk screen printing machine or tunnel oven, so need to adopt fixture form, in the existing preparation process, carbon paper is mostly pasted on fixture plate to realize its positioning by the form of adhesive tape, then place in silk screen printing machine and tunnel oven, but this kind of mode if manual operation, then it can greatly reduce work efficiency, if machine intelligent operation, then it can consume large amount of cost. SUMMARY

[0003] The utility model aims at providing a kind of integrated fixture for fuel cell diffusion layer printing and drying, its advantage lies in, carbon paper can be positioned on the fixture of staff quickly, simultaneously suitable for the printing work of silk screen printing machine and the drying of tunnel oven.

[0004] The above technical purpose of the utility model is realized by the following technical scheme: the through slot is arranged on the high-temperature resistant cover plate, one end of the high-temperature resistant cover plate parallel to the hinged end is an open end communicating with the through slot, the high-temperature resistant bottom plate is centrally provided with a boss for completely placing the carbon paper, when the high-temperature resistant cover plate is closed with the high-temperature resistant bottom plate, the boss and the through slot of the high-temperature resistant cover plate are at the same central position, and the width of the boss is less than the width of the through slot of the high-temperature resistant cover plate, the inner frame plate wall of the high-temperature resistant cover plate is provided with an extension thin plate for limiting the carbon paper, when the high-temperature resistant cover plate is closed with the high-temperature resistant bottom plate, the extension thin plate is above the side end close to the boss, and the contact width of the extension thin plate and the carbon paper is 3-5 mm.

[0005] The utility model is further provided with: the boss is uniformly arranged with exhaust holes, the diameter of the exhaust hole is 2-2.5 mm, and the distance between the two exhaust holes is 1.5-2 mm.

[0006] The utility model is further provided with: the high-temperature resistant bottom plate is centrally provided with a limiting table parallel to the hinged end thereof, the side wall close to the boss of the limiting table is provided with a limiting groove for embedding the carbon paper, both ends of the limiting groove are open, and the width of the limiting groove is equal to the width of the carbon paper.

[0007] The utility model further sets up: one end of high temperature resistance cover plate away from hinged end is equipped with extension handle end.

[0008] The utility model further sets up: both sides of high temperature resistance bottom plate on the boss are equipped with positioning magnet, the high temperature resistance cover plate is equipped with with positioning magnet adsorption's positioning piece in correspondence.

[0009] The utility model further sets up: extension sheet is covered with superfine fiber non - woven fabric layer, the upper and lower surface of superfine fiber non - woven fabric layer all are lower than the upper and lower surface of high temperature resistance cover plate.

[0010] Summarized above, the utility model has following beneficial effect:

[0011] 1, this integrated fixture adopts high temperature resistance cover plate and high temperature resistance bottom plate of mutual hinging to realize the clamping of carbon paper, and the structure of boss and extension sheet is set up to realize the further location of carbon paper in the clamp, compared with the common double clamping plate type clamp, the design of boss and extension sheet in this clamp can realize the small area location and pressing of the periphery of carbon paper, fill the problem of low surface flatness that appears in the processing of double clamping plate type clamp, which further leads to the poor clamping and location effect of carbon paper, and the problem of the certain height difference between the two clamping plates further affects the clamping and location effect of carbon paper, so this clamp can better realize the clamping of carbon paper, reduce the running phenomenon of carbon paper in the clamp, especially for the relatively light and thin single carbon paper, which can also be clamped in this clamp, and the size limit of extension sheet can determine the pressing and covering area of carbon paper, ensure the effective coating area of carbon paper;

[0012] 2, since carbon paper is a light and thin, has certain hardness and fragility flat paper style, in the process of laying on the boss, the laying action from top to bottom of carbon paper will cause certain air resistance, under the air pressure formed by air resistance, will lead to carbon paper not according to the position of technical personnel preset to lay on the boss, further lead to the large range of skew of carbon paper on the boss, need manual adjustment, at this moment will affect the work efficiency, even in the process of manual adjustment, the local stress of carbon paper will appear the damage phenomenon, for this problem, the boss of this clamp is provided with exhaust hole, convenient for the flat laying of paper style carbon paper on the boss, the air flow caused by the action of carbon paper from high to low laying can be discharged through the exhaust hole, so as to avoid the large displacement of carbon paper laying on the boss from the predicted position, convenient for the small distance adjustment of later period;

[0013] 3. During repeated printing and drying of carbon paper, carbon powder particles will roll onto the surface of the paper and roll into the fixture, where they will adhere to the fixture boss surface that is in direct contact with the carbon paper. If cleaning is not timely or thorough and other carbon paper is laid on the boss again, the areas on the bottom of the carbon paper with particles will cause the carbon paper to be damaged under printing pressure during subsequent printing, resulting in damage to the entire sheet of carbon paper. Therefore, the vent holes on the boss can further facilitate the removal of particles and reduce the occurrence of the above phenomenon.

[0014] 4. This fixture is equipped with a limiting platform with a limiting groove for embedding carbon paper. The limiting platform is centrally located on the high-temperature resistant base plate, and the limiting groove is the same width as the carbon paper. The structure of the limiting groove can not only facilitate the positioning of the carbon paper when it is placed on the boss, but also help technicians to quickly find the placement position of the carbon paper on the boss in the left and right directions, so that the carbon paper is centered on the boss, ensuring that the carbon paper printing area is in the middle area, and also improving work efficiency.

[0015] 5. An extended handle is provided on the high-temperature resistant cover plate of this clamp, which makes it easy for technicians to quickly open or close the clamp;

[0016] 6. This fixture is equipped with both positioning magnets and positioning plates to enhance the positioning between the high-temperature resistant cover plate and the high-temperature resistant base plate. This ensures that the position between the high-temperature resistant cover plate and the high-temperature resistant base plate is fixed when the carbon paper is clamped inside. It will not cause relative displacement due to shaking during printing, drying, or handling, which would affect the clamping and limiting effect of the carbon paper.

[0017] 7. The extension plate is equipped with a microfiber nonwoven fabric layer. On the one hand, it can provide flexible support for the carbon paper, effectively reducing damage to the carbon paper. On the other hand, it can also compensate for the ineffective restraint of the carbon paper caused by gaps due to material itself, surface roughness, and process issues. The microfiber nonwoven fabric layer has the advantages of being soft, delicate, and smooth, and is not easy to scratch sensitive materials. When it comes into contact with the carbon paper, the friction is low, which can reduce the risk of damage. In addition, the microfiber nonwoven fabric has the advantage of no fiber shedding. In particular, high-quality microfiber fabric does not shed lint, which can prevent the carbon paper's micropores from being blocked when in contact with it.

[0018] 8. The microfiber nonwoven fabric layer also has a good moisture absorption effect. When the carbon paper is clamped and positioned, its periphery will inevitably be blocked, resulting in poor drying effect on the periphery of the carbon paper. At this time, the microfiber nonwoven fabric layer can play a moisture absorption role on its periphery. That is, when placed in the drying machine, the microfiber nonwoven fabric layer can effectively dry the part of the carbon paper that is clamped. Moreover, when this fixture is placed in the drying oven, the microfiber nonwoven fabric layer is hollow, so it can also be dried quickly. Attached Figure Description

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the accompanying drawings needed in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0020] Figure 1 is the overall structure schematic diagram of the present integrated fixture, and is also the schematic diagram of the present integrated fixture when it is unfolded;

[0021] Figure 2 is Figure 1 is the local enlarged view of A in the figure, and is also the schematic diagram of the limit slot and the open end on the boss;

[0022] Figure 3 is the overall structure schematic diagram of the present integrated fixture, and is also the schematic diagram of the present integrated fixture when it is closed;

[0023] Figure 4 is the layer structure sectional schematic diagram of the present integrated fixture in embodiment 2, in which the extended sheet is wrapped with a superfine fiber non-woven fabric layer.

[0024] In the figure: 1, high-temperature-resistant cover plate; 1-1, through slot; 1-2, open end; 1-3, extended sheet; 1-3-1, superfine fiber non-woven fabric layer; 1-4, extended handle end; 1-5, positioning piece; 2, high-temperature-resistant bottom plate; 2-1, boss; 2-2, exhaust hole; 2-3, limit platform; 2-4, limit slot; 2-5, open end of the limit slot; 2-6, positioning magnet; 3, hinged end. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The technical solutions in the embodiments of the present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, and is by no means any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0027] It is to be understood that the terms so far as the language goes are used herein only to describe specific embodiments and not intended to limit the example embodiments according to the present application. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0028] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the actual dimensions of the parts shown in the drawings are not necessarily to scale. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the description. In all examples shown and discussed herein, any specific value should be interpreted as merely an example, and not as a limitation. Thus, other examples of the example embodiments can have different values. It is noted that like numbers and letters refer to like elements throughout the several views of the drawings and, as such, no further discussion with regard thereto is deemed necessary.

[0029] In the description of the present application, it is to be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application: the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0030] For purposes of the description hereinafter, spatial relations terms are used, such as "above", "below", "upper", "lower", and the like, relative to the device as shown in the figures. It is to be understood that the spatial terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device is inverted consistent with its being upside down as shown in one or more of the figures, then a part described as "above" other parts in one orientation would be positioned "below" the other parts in the inverted orientation. Thus, the exemplary term "above" can encompass both an "above" and "below" position depending on the particular orientation that is used. The parts can also be positioned in any of several orientations (rotated 90 degrees or viewed in other orientations), and the spatially relative terms used herein interpreted accordingly.

[0031] In addition, it should be noted that the use of "first", "second", and the like words of distinction do not connote any meaning of importance, but are merely used to distinguish one element from another, and are not intended to denote more, less or a single element. Thus, these words are not to be construed as limiting the scope of the present application.

[0032] Embodiment: A kind of fuel cell diffusion layer printing drying integrated fixture, as shown in Figure 1 Or 3, including rectangular high-temperature-resistant bottom plate 2, rectangular high-temperature-resistant cover plate 1 is hingedly arranged on high-temperature-resistant bottom plate 2, high-temperature-resistant cover plate 1 and high-temperature-resistant bottom plate 2 are made of alumina material, with good high-temperature-resistant effect;High-temperature-resistant cover plate 1 and high-temperature-resistant bottom plate 2 are connected to one end of hinged end 3, the hinge parts can be realized the hinged connection of both, to realize the closure of both, namely high-temperature-resistant cover plate 1 and high-temperature-resistant bottom plate 2 are mutually closed and constitute the clamping plate that carbon paper can be clamped in.

[0033] To cooperate with the shape of carbon paper, as Figure 1As shown, a rectangular through slot 1-1 is centrally provided on the high-temperature cover plate 1, and the end of the high-temperature cover plate 1 opposite to the hinged end 3 is an open end 1-2 communicating with the through slot 1-1. A rectangular boss 2-1 for completely placing the carbon paper is also centrally provided on the high-temperature bottom plate 2, and the area of the boss 2-1 is greater than or equal to the area of the carbon paper. When the high-temperature cover plate 1 and the high-temperature bottom plate 2 are closed, the boss 2-1 and the through slot 1-1 of the high-temperature cover plate 1 are at the same central position, and the width of the boss 2-1 is less than the width of the through slot 1-1 of the high-temperature cover plate 1 within 1 mm, so that the boss 2-1 can smoothly penetrate the through slot 1-1 when the high-temperature cover plate 1 and the high-temperature bottom plate 2 are closed. At the same time, an extension sheet 1-3 made of the same material as the high-temperature cover plate 1 is provided on the inner frame plate wall of the high-temperature cover plate 1 to limit the carbon paper. When the high-temperature cover plate 1 and the high-temperature bottom plate 2 are closed, the extension sheet 1-3 is above the boss 2-1 near the edge end. When the carbon paper is placed on the boss 2-1 and the high-temperature cover plate 1 and the high-temperature bottom plate 2 are closed, the extension sheet 1-3 contacts the periphery of the carbon paper to achieve the pressing and limiting effect on the carbon paper. The width of the extension sheet 1-3 can be set to 4 mm, and the covering and limiting width of the periphery of the carbon paper is 3 mm.

[0034] At the same time, as shown in Figure 1 and 2 , a limiting table 2-3 parallel to the end is centrally provided on the high-temperature bottom plate 2 opposite to the hinged end 3. The upper surface of the limiting table 2-3 is 1.5 mm higher than the upper surface of the boss 2-1. A limiting groove 2-4 for embedding the carbon paper is provided on the side wall of the limiting table 2-3 near the boss 2-1. Both ends of the limiting groove 2-4 are open ends 2-5. The width of the limiting groove 2-4 is equal to the width of the carbon paper. The design of the open ends 2-5 of the limiting groove 2-4 can avoid the inconvenience of embedding the carbon paper and the damage of the carbon paper caused by the contact with the inner walls of the limiting groove 2-4. On this basis, further as shown in Figure 1Or 3, as shown, the boss 2-1 on the array arranged exhaust hole 2-2, exhaust hole 2-2 diameter design is 2mm, while every two exhaust hole 2-2 up and down, left and right between the interval is 1.5mm, because carbon paper has light and thin brittle characteristics, and its surface has coating, in the process of the operator puts it into the fixture, need to keep strength and try to reduce the touch, therefore, under the structure of the fixture, the operator will generally put one side of the carbon paper inclined into the limit slot 2-4, then, after the natural fall of carbon paper on the boss 2-1, by touching the side of carbon paper to adjust the position, therefore, the laying action of carbon paper natural fall to the boss 2-1 will cause a certain airflow resistance, at this time, this airflow resistance can be discharged through the exhaust hole 2-2, which is beneficial to the flat placement of carbon paper on the boss, and will not cause carbon paper damage, and can also ensure that the carbon paper will not have a large drift phenomenon, and also facilitate the discharge of particles generated during the printing and drying process on the carbon paper, without more sticking to the surface of the boss 2-1.

[0035] At the same time, as shown in Figure 1 and 3 , the high temperature cover plate 1 is longer than the high temperature bottom plate 2, when the high temperature cover plate 1 and the high temperature bottom plate 2 are closed, the end of the high temperature cover plate 1 away from the hinge end 3 has a contact part with the high temperature bottom plate 2, which is the extension handle end 1-4 of the high temperature cover plate 1, which is convenient for technicians to open and close the fixture faster.

[0036] At the same time, as shown in Figure 1 , the high temperature bottom plate 2 is provided with positioning magnets 2-6 on both sides of the boss 2-1, and the high temperature cover plate 1 is provided with positioning pieces 1-5 corresponding to the positioning magnets 2-6 for adsorption, which is convenient for further locking and positioning between the high temperature cover plate 1 and the high temperature bottom plate 2.

[0037] Specific implementation: the fixture is unfolded by the extension handle end 1-4 and placed on a horizontal table, then the carbon paper to be printed is placed on the boss 2-1, in the process of placing, one side of the carbon paper is inclined and clamped into the limit slot 2-4, then the carbon paper is naturally dropped onto the boss 2-1, then the position is adjusted by touching the side of the carbon paper, at this time, the carbon paper is placed in the center of the high temperature bottom plate 2, then the high temperature cover plate 1 is closed with the high temperature bottom plate 2, which realizes clamping of the carbon paper in the fixture, at the same time, the through slot 1-1 of the high temperature cover plate 1 exposes the carbon paper to be coated, the fixture clamping the carbon paper is placed in the screen printing machine, the brush plate of the screen printing machine can print the exposed area of the carbon paper, after printing once, the fixture clamping the carbon paper is directly placed in the tunnel oven for drying, then the continuous process of printing-drying is carried out again, and the preparation of the fuel cell diffusion layer is completed.

[0038] Example 2: as shown in Figure 4As shown, on the basis of Embodiment 1, the above extension sheet 1-3 is covered with a superfine fiber non-woven fabric layer 1-3-1, and the upper and lower surfaces of the superfine fiber non-woven fabric layer 1-3-1 are lower than the upper and lower surfaces of the high-temperature-resistant cover plate 1; the superfine fiber non-woven fabric layer 1-3-1 plays a flexible supporting role on the carbon paper on one hand, avoiding the abrasion of the carbon paper caused by the hard convex 2-1 and the extension sheet 1-3, and on the other hand, can realize the moisture absorption effect on the part of the carbon paper clamped, when the clamp is placed in the oven, since the upper and lower surfaces of the superfine fiber non-woven fabric layer 1-3-1 are lower than the upper and lower surfaces of the high-temperature-resistant cover plate 1, the superfine fiber non-woven fabric layer 1-3-1 is in a hollow state, so it can also be quickly dried under the action of the oven airflow, so the superfine fiber non-woven fabric layer 1-3-1 plays a good repeated moisture absorption effect on the carbon paper, and in addition, the superfine fiber non-woven fabric layer 1-3-1 can be made of polyamide superfine fiber cloth.

[0039] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A kind of fuel cell diffusion layer printing drying integrated fixture, including high-temperature-resistant bottom plate (2), high-temperature-resistant cover plate (1) is hinged on the high-temperature-resistant bottom plate (2), the end of high-temperature-resistant cover plate (1) and high-temperature-resistant bottom plate (2) connection is hinged end (3), high-temperature-resistant cover plate (1) and high-temperature-resistant bottom plate (2) are closed to each other after forming the clamping plate that carbon paper can be clamped in, it is characterized by: The high-temperature-resistant cover plate (1) is provided with a through slot (1-1), and one end of the high-temperature-resistant cover plate (1) parallel to the hinged end (3) is an open end (1-2) communicating with the through slot (1-1), the high-temperature-resistant bottom plate (2) is provided with a boss (2-1) in the middle for completely placing carbon paper, when the high-temperature-resistant cover plate (1) and the high-temperature-resistant bottom plate (2) are closed, the boss (2-1) and the through slot (1-1) of the high-temperature-resistant cover plate (1) are at the same central position, and the width of the boss (2-1) is less than the width of the through slot (1-1) of the high-temperature-resistant cover plate (1), the inner frame plate wall of the high-temperature-resistant cover plate (1) is provided with an extension thin plate (1-3) for limiting the carbon paper, when the high-temperature-resistant cover plate (1) and the high-temperature-resistant bottom plate (2) are closed, the extension thin plate (1-3) is above the boss (2-1) near the edge end, and the contact width of the extension thin plate (1-3) and the carbon paper is 3-5mm.

2. The integrated fixture for printing and drying of fuel cell diffusion layers according to claim 1, characterized in that: The boss (2-1) is uniformly arrayed with exhaust holes (2-2), the diameter of the exhaust hole (2-2) is 2-2.5mm, and the distance between two exhaust holes (2-2) is 1.5-2mm.

3. The integrated fixture for printing and drying of fuel cell diffusion layers according to claim 1, wherein: The high-temperature-resistant bottom plate (2) is provided with a limiting table (2-3) in the middle parallel to the hinged end (3), the limiting table (2-3) is provided with a limiting groove (2-4) for embedding the carbon paper on the side wall close to the boss (2-1), both ends of the limiting groove (2-4) are open, and the width of the limiting groove (2-4) is equal to the width of the carbon paper.

4. The integrated fixture for printing and drying of fuel cell diffusion layers according to claim 3, wherein: The high-temperature-resistant cover plate (1) is provided with an extension handle end (1-4) away from the hinged end (3).

5. The integrated fixture for printing and drying of fuel cell diffusion layers according to claim 3, wherein: The high-temperature-resistant bottom plate (2) is provided with a positioning magnet (2-6) on both sides of the boss (2-1), and the high-temperature-resistant cover plate (1) is correspondingly provided with a positioning sheet (1-5) adsorbed with the positioning magnet (2-6).

6. The integrated fixture for printing and drying of fuel cell diffusion layers according to claim 1, wherein: The extension thin plate (1-3) is coated with a superfine fiber non-woven fabric layer (1-3-1), and the upper and lower surfaces of the superfine fiber non-woven fabric layer (1-3-1) are lower than the upper and lower surfaces of the high-temperature-resistant cover plate (1).

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